ecos: packages/fs/rom/current/src/romfs.c annotate

annotate packages/fs/rom/current/src/romfs.c @ 2980:8d5bed76c596

* cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. * support/mk_romfs.c: Fix Win32 build. * src/romfs.c: Add ability to mount a flash block device by name.

author	jld
date	Mon, 29 Nov 2010 16:29:19 +0000
parents	a2b177b28c45
children

rev	line source
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	2 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	3 // romfs.c
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	4 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	5 // ROM file system
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	6 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	7 //==========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	9 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 156 diff changeset	12 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	14 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	16 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 156 diff changeset	17 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	21 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 156 diff changeset	22 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	23 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 156 diff changeset	26 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	27 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	28 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	29 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	30 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	31 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	32 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	33 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 156 diff changeset	34 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	35 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	36 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	37 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2474 diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	39 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	40 //#####DESCRIPTIONBEGIN####
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	41 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	42 // Author(s): nickg
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	43 // Contributors: nickg, richard.panton@3glab.com
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	44 // Date: 2000-07-25
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	45 // Purpose: ROM file system
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	46 // Description: This is a ROM filesystem for eCos. It attempts to
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	47 // provide full POSIX-compatible filesystem behaviour
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	48 // while at the same time being efficient in terms of
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	49 // time and space used.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	50 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	51 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	52 //####DESCRIPTIONEND####
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	53 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	54 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	55 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	56 // General Description
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	57 // ===================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	58 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	59 // This is an implementation of a ROM filesystem for eCos. Its goal is
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	60 // to provide a working example of a filesystem that provides most of
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	61 // the required POSIX functionality. And obviously it may also be
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	62 // useful in its own right.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	63 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	64 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	65 // Header
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	66 // ------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	67 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	68 // There is a single header that describes the overall format of the ROMFS
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	69 // disk. The address of this header is used as the base for all offsets used
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	70 // in the node and directory structures. It contains the following fields:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	71 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	72 // label - A human readable label for various purposes
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	73 // fssize - The size in bytes of the entire ROMFS disk
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	74 // nodes - A count of the nodes in the disk
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	75 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	76 // Immediately following thisin memory is the node table, consisting of
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	77 // 'nodes' repetitions of the node object.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	78 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	79 // Nodes
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	80 // -----
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	81 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	82 // All files and directories are represented by node objects. Each
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	83 // romfs_node structure contains the following fields:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	84 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	85 // mode - Node type, file or directory.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	86 // nlink - Number of links to this node. Each directory entry that references
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	87 // this node is a link.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	88 // size - Size of the data in this node in bytes.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	89 // ctime - Creation time of the file (NOT the ROMFS)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	90 // data - Offset of the first data byte for this node from the header
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	91 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	92 // Directories
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	93 // -----------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	94 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	95 // A directory is a node whose data is a list of directory entries.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	96 // These contain the
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	97 // following fields:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	98 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	99 // node - Index of the node in the romfs_disk table that is referenced by
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	100 // this entry. This is present in every directory entry fragment.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	101 // next - Offset of the next name entry.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	102 // name - The filename associated with this link to the node.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	103 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	104 // Data Storage
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	105 // ------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	106 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	107 // Each file has its data stored in a single contiguous memory block
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	108 // referenced by the offset in the node.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	109 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	110 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	111
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	112 #include <pkgconf/system.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	113 #include <pkgconf/hal.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	114 #include <pkgconf/kernel.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	115 #include <pkgconf/io_fileio.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	116 #include <pkgconf/fs_rom.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	117
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	118 #include <cyg/kernel/ktypes.h> // base kernel types
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	119 #include <cyg/infra/cyg_trac.h> // tracing macros
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	120 #include <cyg/infra/cyg_ass.h> // assertion macros
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	121
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	122 #include <unistd.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	123 #include <sys/types.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	124 #include <fcntl.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	125 #include <sys/stat.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	126 #include <errno.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	127 #include <dirent.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	128
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	129 #include <stdarg.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	130 #include <stdio.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	131 #include <stdlib.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	132 #include <string.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	133
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	134 #include <cyg/fileio/fileio.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	135
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	136 #include <cyg/kernel/kapi.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	137 #include <cyg/infra/diag.h>
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	138
2980 8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	139 #if defined(CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP)
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	140 #include <cyg/io/io.h>
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	141 #include <cyg/io/config_keys.h>
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	142 #include <cyg/io/flash.h>
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	143 #endif
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	144
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	145 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	146 // Eventually we want to eXecute In Place from the ROM in a protected
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	147 // environment, so we'll need executables to be aligned to a boundary
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	148 // suitable for MMU protection. A suitable boundary would be the 4k
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	149 // boundary in all the CPU architectures I am currently aware of.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	150
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	151 // Forward definitions
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	152
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	153 // Filesystem operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	154 static int romfs_mount ( cyg_fstab_entry fste, cyg_mtab_entry mte );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	155 static int romfs_umount ( cyg_mtab_entry *mte );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	156 static int romfs_open ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	157 int mode, cyg_file *fte );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	158 static int romfs_opendir ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	159 cyg_file *fte );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	160 static int romfs_chdir ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	161 cyg_dir *dir_out );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	162 static int romfs_stat ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	163 struct stat *buf);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	164 static int romfs_getinfo ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	165 int key, void *buf, int len );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	166 static int romfs_setinfo ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	167 int key, void *buf, int len );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	168
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	169 // File operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	170 static int romfs_fo_read (struct CYG_FILE_TAG fp, struct CYG_UIO_TAG uio);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	171 static int romfs_fo_lseek (struct CYG_FILE_TAG fp, off_t pos, int whence );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	172 static int romfs_fo_ioctl (struct CYG_FILE_TAG *fp, CYG_ADDRWORD com,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	173 CYG_ADDRWORD data);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	174 static int romfs_fo_fsync (struct CYG_FILE_TAG *fp, int mode );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	175 static int romfs_fo_close (struct CYG_FILE_TAG *fp);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	176 static int romfs_fo_fstat (struct CYG_FILE_TAG fp, struct stat buf );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	177 static int romfs_fo_getinfo (struct CYG_FILE_TAG fp, int key, void buf, int len );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	178 static int romfs_fo_setinfo (struct CYG_FILE_TAG fp, int key, void buf, int len );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	179
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	180 // Directory operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	181 static int romfs_fo_dirread (struct CYG_FILE_TAG fp, struct CYG_UIO_TAG uio);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	182 static int romfs_fo_dirlseek (struct CYG_FILE_TAG fp, off_t pos, int whence );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	183
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	184
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	185 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	186 // Filesystem table entries
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	187
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	188 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	189 // Fstab entry.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	190 // This defines the entry in the filesystem table.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	191 // For simplicity we use _FILESYSTEM synchronization for all accesses since
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	192 // we should never block in any filesystem operations.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	193
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	194 FSTAB_ENTRY( romfs_fste, "romfs", 0,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	195 CYG_SYNCMODE_FILE_FILESYSTEM\|CYG_SYNCMODE_IO_FILESYSTEM,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	196 romfs_mount,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	197 romfs_umount,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	198 romfs_open,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	199 (cyg_fsop_unlink *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	200 (cyg_fsop_mkdir *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	201 (cyg_fsop_rmdir *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	202 (cyg_fsop_rename *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	203 (cyg_fsop_link *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	204 romfs_opendir,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	205 romfs_chdir,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	206 romfs_stat,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	207 romfs_getinfo,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	208 romfs_setinfo);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	209
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	210 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	211 // mtab entry.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	212 // This defines a single ROMFS loaded into ROM at the configured address
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	213 //
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	214 // MTAB_ENTRY( rom_mte, // structure name
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	215 // "/rom", // mount point
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	216 // "romfs", // FIlesystem type
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	217 // "", // hardware device
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	218 // (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS // Address in ROM
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	219 // );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	220
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	221
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	222 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	223 // File operations.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	224 // This set of file operations are used for normal open files.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	225
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	226 static cyg_fileops romfs_fileops =
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	227 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	228 romfs_fo_read,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	229 (cyg_fileop_write *)cyg_fileio_erofs,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	230 romfs_fo_lseek,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	231 romfs_fo_ioctl,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	232 cyg_fileio_seltrue,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	233 romfs_fo_fsync,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	234 romfs_fo_close,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	235 romfs_fo_fstat,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	236 romfs_fo_getinfo,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	237 romfs_fo_setinfo
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	238 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	239
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	240 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	241 // Directory file operations.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	242 // This set of operations are used for open directories. Most entries
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	243 // point to error-returning stub functions. Only the read, lseek and
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	244 // close entries are functional.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	245
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	246 static cyg_fileops romfs_dirops =
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	247 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	248 romfs_fo_dirread,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	249 (cyg_fileop_write *)cyg_fileio_enosys,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	250 romfs_fo_dirlseek,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	251 (cyg_fileop_ioctl *)cyg_fileio_enosys,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	252 cyg_fileio_seltrue,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	253 (cyg_fileop_fsync *)cyg_fileio_enosys,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	254 romfs_fo_close,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	255 (cyg_fileop_fstat *)cyg_fileio_enosys,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	256 (cyg_fileop_getinfo *)cyg_fileio_enosys,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	257 (cyg_fileop_setinfo *)cyg_fileio_enosys
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	258 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	259
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	260 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	261 // Data typedefs
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	262 // Some forward typedefs for the main data structures.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	263
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	264 struct romfs_disk;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	265 typedef struct romfs_disk romfs_disk;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	266
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	267 struct romfs_node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	268 typedef struct romfs_node romfs_node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	269
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	270 struct romfs_dirent;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	271 typedef struct romfs_dirent romfs_dirent;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	272
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	273 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	274 // File and directory node
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	275 // This data structure represents a file or directory.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	276
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	277 struct romfs_node
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	278 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	279 cyg_uint32 mode; // 0-3 node type
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	280 cyg_ucount32 nlink; // 4-7 number of links to this node
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	281 cyg_uint16 uid; // 8-9 Owner id
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	282 cyg_uint16 gid; // 10-11 Group id
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	283 cyg_uint32 size; // 12-15 size of file in bytes
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	284 cyg_uint32 ctime; // 16-19 creation status time
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	285 cyg_uint32 offset; // 20-23 offset of data from start of ROMFS
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	286 cyg_uint32 pad[2]; // 24-31 padding to align to 32byte boundary
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	287 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	288
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	289 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	290 // Directory entry.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	291 // Variable sized entry containing the name and node of a directory entry
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	292
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	293 struct romfs_dirent
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	294 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	295 cyg_ucount32 node; // Index of node in romfs_disk structure
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	296 cyg_uint32 next; // Offset from start of directory of
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	297 // a) the next entry, or
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	298 // b) the end of the directory data
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	299 char name[0]; // The name, NUL terminated
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	300 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	301
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	302 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	303 // ROMFS header
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	304 // This data structure contains overall information on the ROMFS
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	305
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	306 struct romfs_disk
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	307 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	308 cyg_uint32 magic; // 0-3 Marks a valid ROMFS entry
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	309 cyg_ucount32 nodecount; // 4-7 Count of nodes in this filesystem
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	310 cyg_ucount32 disksize; // 8-11 Count of bytes in this filesystem
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	311 cyg_uint32 dev_id; // 12-15 ID of disk (put into stat.st_dev)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	312 char name[16]; // 16-31 Name - pads to 32 bytes
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	313 romfs_node node[0];
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	314 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	315
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	316 #define ROMFS_MAGIC 0x526f6d2e // The magic signature word for a romfs
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	317 #define ROMFS_CIGAM 0x2e6d6f52 // The byte sex is wrong if you see this
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	318
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	319 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	320 // Directory search data
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	321 // Parameters for a directory search. The fields of this structure are
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	322 // updated as we follow a pathname through the directory tree.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	323
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	324 struct romfs_dirsearch
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	325 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	326 romfs_disk *disk; // disk structure
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	327 romfs_node *dir; // directory to search
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	328 const char *path; // path to follow
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	329 romfs_node *node; // Node found
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	330 const char *name; // last name used
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	331 int namelen; // name fragment length
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	332 cyg_bool last; // last name in path?
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	333 };
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	334
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	335 typedef struct romfs_dirsearch romfs_dirsearch;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	336
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	337 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	338 // This seems to be the only string function referenced. Define as static
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	339 // here to avoid having to load the string library
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	340
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	341 static bool match( const char a, const char b, int len )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	342 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	343 for ( ; len > 0 && a && b && a == b ; a++, b++, len-- )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	344 ;
2941 a2b177b28c45 * src/romfs.c: file name comparison was broken for two files sergeig parents: 2729 diff changeset	345 return ( len == 0 && *a == 0 );
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	346 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	347
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	348
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	349 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	350 // SIMPLE buffer management.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	351 // Each node has a data buffer pointer and a size.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	352
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	353 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	354 // findbuffer_node()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	355 // return a pointer to the data at the indicated file position.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	356
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	357 static int findbuffer_node( romfs_disk *disk, // header pointer
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	358 romfs_node *node, // node pointer
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	359 off_t pos, // data position to get
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	360 cyg_uint8 **buffer, // returned buffer pointer
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	361 size_t *size) // returned buffer size
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	362 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	363 if ( pos >= node->size \|\| node->size == 0 )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	364 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	365 // Indicate end of data.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	366 *size = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	367 } else {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	368
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	369 // Calculate the buffer position
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	370 buffer = (cyg_uint8)disk + node->offset + pos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	371 *size = node->size-pos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	372 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	373
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	374 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	375 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	376
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	377 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	378 // Directory operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	379
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	380
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	381 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	382 // find_direntry()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	383 // Find a directory entry for the name and return a pointer to the first
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	384 // entry fragment.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	385
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	386 static romfs_dirent find_direntry( romfs_disk disk, romfs_node dir, const char name, int namelen )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	387 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	388 off_t pos = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	389 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	390
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	391 // Loop over all the entries until a match is found or we run out
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	392 // of data.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	393 while( pos < dir->size )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	394 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	395 romfs_dirent *d;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	396 cyg_uint8 *buf;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	397 size_t size;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	398
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	399 err = findbuffer_node( disk, dir, pos, &buf, &size );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	400 if( err != ENOERR \|\| size == 0)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	401 return NULL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	402
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	403 d = (romfs_dirent *)buf;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	404
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	405 // Is this the directory entry we're looking for?
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	406 if ( match( d->name, name, namelen ) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	407 return d;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	408
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	409 // Otherwise move on to next entry in chain
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	410 pos = d->next;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	411 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	412
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	413 return NULL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	414 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	415
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	416 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	417 // Directory search
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	418
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	419 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	420 // init_dirsearch()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	421 // Initialize a dirsearch object to start a search
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	422
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	423 static void init_dirsearch( romfs_dirsearch *ds,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	424 romfs_disk *disk,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	425 romfs_node *dir,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	426 const char *name)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	427 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	428 ds->disk = disk;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	429 ds->dir = dir;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	430 ds->path = name;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	431 ds->node = dir;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	432 ds->name = name;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	433 ds->namelen = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	434 ds->last = false;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	435 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	436
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	437 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	438 // find_entry()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	439 // Search a single directory for the next name in a path and update the
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	440 // dirsearch object appropriately.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	441
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	442 static int find_entry( romfs_dirsearch *ds )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	443 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	444 romfs_node *dir = ds->dir;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	445 const char *name = ds->path;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	446 const char *n = name;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	447 int namelen = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	448 romfs_dirent *d;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	449
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	450 // check that we really have a directory
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	451 if( !S_ISDIR(dir->mode) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	452 return ENOTDIR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	453
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	454 // Isolate the next element of the path name.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	455 while( n != '\0' && n != '/' )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	456 n++, namelen++;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	457
1533 89eafd905d8d * src/fs-ecos.c : asl parents: 1440 diff changeset	458 // Check if this is the last path element.
89eafd905d8d * src/fs-ecos.c : asl parents: 1440 diff changeset	459 while( *n == '/') n++;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	460 if( *n == '\0' )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	461 ds->last = true;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	462
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	463 // update name in dirsearch object
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	464 ds->name = name;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	465 ds->namelen = namelen;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	466
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	467 // Here we have the name and its length set up.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	468 // Search the directory for a matching entry
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	469
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	470 d = find_direntry( ds->disk, dir, name, namelen );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	471
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	472 if( d == NULL )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	473 return ENOENT;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	474
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	475 // pass back the node we have found
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	476 ds->node = &ds->disk->node[d->node];
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	477
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	478 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	479
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	480 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	481
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	482 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	483 // romfs_find()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	484 // Main interface to directory search code. This is used in all file
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	485 // level operations to locate the object named by the pathname.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	486
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	487 static int romfs_find( romfs_dirsearch *d )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	488 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	489 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	490
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	491 // Short circuit empty paths
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	492 if( *(d->path) == '\0' )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	493 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	494
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	495 // iterate down directory tree until we find the object
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	496 // we want.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	497 for(;;)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	498 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	499 err = find_entry( d );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	500
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	501 if( err != ENOERR )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	502 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	503
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	504 if( d->last )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	505 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	506
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	507 // Update dirsearch object to search next directory.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	508 d->dir = d->node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	509 d->path += d->namelen;
1533 89eafd905d8d * src/fs-ecos.c : asl parents: 1440 diff changeset	510 while( *(d->path) == '/' ) d->path++; // skip dirname separators
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	511 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	512 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	513
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	514 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	515 // Pathconf support
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	516 // This function provides support for pathconf() and fpathconf().
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	517
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	518 static int romfs_pathconf( romfs_node node, struct cyg_pathconf_info info )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	519 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	520 int err = ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	521
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	522 switch( info->name )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	523 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	524 case _PC_LINK_MAX:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	525 info->value = LINK_MAX;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	526 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	527
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	528 case _PC_MAX_CANON:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	529 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	530 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	531 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	532
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	533 case _PC_MAX_INPUT:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	534 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	535 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	536 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	537
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	538 case _PC_NAME_MAX:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	539 info->value = NAME_MAX;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	540 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	541
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	542 case _PC_PATH_MAX:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	543 info->value = PATH_MAX;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	544 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	545
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	546 case _PC_PIPE_BUF:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	547 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	548 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	549 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	550
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	551
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	552 case _PC_ASYNC_IO:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	553 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	554 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	555 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	556
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	557 case _PC_CHOWN_RESTRICTED:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	558 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	559 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	560 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	561
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	562 case _PC_NO_TRUNC:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	563 info->value = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	564 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	565
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	566 case _PC_PRIO_IO:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	567 info->value = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	568 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	569
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	570 case _PC_SYNC_IO:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	571 info->value = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	572 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	573
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	574 case _PC_VDISABLE:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	575 info->value = -1; // not supported
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	576 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	577 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	578
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	579 default:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	580 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	581 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	582 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	583
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	584 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	585 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	586
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	587 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	588 // Filesystem operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	589
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	590 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	591 // romfs_mount()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	592 // Process a mount request. This mainly finds root for the
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	593 // filesystem.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	594
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	595 static int romfs_mount ( cyg_fstab_entry fste, cyg_mtab_entry mte )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	596 {
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	597 romfs_disk *disk=NULL;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	598
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	599 if ( !mte->data ) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	600 // If the image address was not in the MTE data word,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	601 if ( mte->devname && mte->devname[0] ) {
2980 8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	602 // If a device name specified, lookup flash block device.
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	603 #if defined(CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP)
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	604 if ( mte->devname[0] == '/' ) {
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	605 Cyg_ErrNo err;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	606 cyg_io_handle_t t;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	607 cyg_io_flash_getconfig_devaddr_t d;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	608 int len;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	609 err = cyg_io_lookup(mte->devname, &t);
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	610 if (err != ENOERR) {
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	611 return -err;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	612 }
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	613 len = sizeof(d);
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	614 err = cyg_io_get_config(t, CYG_IO_GET_CONFIG_FLASH_DEVADDR, &d, &len);
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	615 if (err != ENOERR) {
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	616 return -err;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	617 }
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	618 disk = (romfs_disk *) d.dev_addr;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	619 } else
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	620 #endif
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	621 {
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	622 char *addr;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	623 // And there's something in the 'hardware device' field,
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	624 // then read the address from there.
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	625 sscanf( mte->devname, "%p", &addr );
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	626 disk = (romfs_disk *) addr;
8d5bed76c596 * cdl/romfs.cdl: Add CYGFUN_FS_ROM_FLASH_BLOCK_DEVICE_LOOKUP option. jld parents: 2941 diff changeset	627 }
1787 fb1561fe12e7 * src/romfs.c (romfs_mount): Avoid a compiler warning about punned asl parents: 1533 diff changeset	628 }
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	629 } else {
548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	630 disk = (romfs_disk *)mte->data;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	631 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	632
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	633 if ( !disk ) {
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	634 // If still no address, try the FSTAB entry data word
1440 4367d4c65982 * src/romfs.c (romfs_mount) : function wrongly returns ENOENT even asl parents: 1272 diff changeset	635 disk = (romfs_disk *)fste->data;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	636 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	637
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	638 if ( !disk ) {
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	639 // If still no address, give up...
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	640 return ENOENT;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	641 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	642
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	643
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	644
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	645 // Check the ROMFS magic number to ensure that there's really an fs.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	646 if ( disk->magic == ROMFS_CIGAM ) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	647 // The disk image has the wrong byte sex!!!
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	648 return EIO;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	649 } else if ( disk->magic != ROMFS_MAGIC \|\| disk->nodecount == 0 ) {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	650 // No image found
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	651 return ENOENT;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	652 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	653
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	654 mte->root = (cyg_dir)&disk->node[0];
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	655
1272 548125f9b000 + * src/romfs.c (romfs_mount): If a mount fails, make sure we leave asl parents: 210 diff changeset	656 mte->data = (CYG_ADDRWORD)disk;
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	657 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	658 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	659
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	660 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	661 // romfs_umount()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	662 // Unmount the filesystem. This will currently always succeed.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	663
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	664 static int romfs_umount ( cyg_mtab_entry *mte )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	665 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	666 // Clear root pointer
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	667 mte->root = CYG_DIR_NULL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	668
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	669 // That's all folks.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	670
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	671 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	672 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	673
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	674 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	675 // romfs_open()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	676 // Open a file for reading
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	677
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	678 static int romfs_open ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	679 int mode, cyg_file *file )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	680 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	681
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	682 romfs_dirsearch ds;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	683 romfs_node *node = NULL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	684 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	685
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	686 init_dirsearch( &ds, (romfs_disk )mte->data, (romfs_node )dir, name );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	687
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	688 err = romfs_find( &ds );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	689
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	690 if( err == ENOENT )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	691 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	692 return ENOENT;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	693 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	694 else if( err == ENOERR )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	695 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	696 // The node exists. If the O_CREAT and O_EXCL bits are set, we
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	697 // must fail the open.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	698
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	699 if( (mode & (O_CREAT\|O_EXCL)) == (O_CREAT\|O_EXCL) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	700 err = EEXIST;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	701 else node = ds.node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	702 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	703
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	704 if( err == ENOERR && (mode & O_TRUNC ) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	705 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	706 // If the O_TRUNC bit is set we must fail the open
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	707
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	708 err = EPERM;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	709 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	710
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	711 if( err != ENOERR ) return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	712
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	713 // Check that we actually have a file here
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	714 if( S_ISDIR(node->mode) ) return EISDIR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	715
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	716 // Initialize the file object
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	717
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	718 file->f_flag \|= mode & CYG_FILE_MODE_MASK;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	719 file->f_type = CYG_FILE_TYPE_FILE;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	720 file->f_ops = &romfs_fileops;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	721 file->f_offset = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	722 file->f_data = (CYG_ADDRWORD)node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	723 file->f_xops = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	724
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	725 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	726 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	727
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	728 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	729 // romfs_opendir()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	730 // Open a directory for reading.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	731
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	732 static int romfs_opendir ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	733 cyg_file *file )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	734 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	735 romfs_dirsearch ds;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	736 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	737
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	738 init_dirsearch( &ds, (romfs_disk )mte->data, (romfs_node )dir, name );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	739
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	740 err = romfs_find( &ds );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	741
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	742 if( err != ENOERR ) return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	743
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	744 // check it is really a directory.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	745 if( !S_ISDIR(ds.node->mode) ) return ENOTDIR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	746
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	747 // Initialize the file object, setting the f_ops field to a
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	748 // special set of file ops.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	749
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	750 file->f_type = CYG_FILE_TYPE_FILE;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	751 file->f_ops = &romfs_dirops;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	752 file->f_offset = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	753 file->f_data = (CYG_ADDRWORD)ds.node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	754 file->f_xops = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	755
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	756 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	757
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	758 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	759
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	760 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	761 // romfs_chdir()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	762 // Change directory support.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	763
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	764 static int romfs_chdir ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	765 cyg_dir *dir_out )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	766 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	767 if( dir_out != NULL )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	768 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	769 // This is a request to get a new directory pointer in
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	770 // *dir_out.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	771
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	772 romfs_dirsearch ds;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	773 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	774
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	775 init_dirsearch( &ds, (romfs_disk )mte->data, (romfs_node )dir, name );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	776
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	777 err = romfs_find( &ds );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	778
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	779 if( err != ENOERR ) return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	780
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	781 // check it is a directory
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	782 if( !S_ISDIR(ds.node->mode) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	783 return ENOTDIR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	784
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	785 // Pass it out
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	786 *dir_out = (cyg_dir)ds.node;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	787 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	788 // If no output dir is required, this means that the mte and
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	789 // dir arguments are the current cdir setting and we should
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	790 // forget this fact. Do nothing in ROMFS.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	791
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	792 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	793 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	794
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	795 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	796 // romfs_stat()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	797 // Get struct stat info for named object.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	798
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	799 static int romfs_stat ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	800 struct stat *buf)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	801 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	802 romfs_dirsearch ds;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	803 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	804 romfs_disk disk = (romfs_disk )mte->data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	805
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	806 init_dirsearch( &ds, disk, (romfs_node *)dir, name );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	807
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	808 err = romfs_find( &ds );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	809
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	810 if( err != ENOERR ) return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	811
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	812 // Fill in the status
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	813 buf->st_mode = ds.node->mode;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	814 buf->st_ino = (ino_t)(ds.node - &disk->node[0]);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	815 buf->st_dev = (dev_t)disk->dev_id;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	816 buf->st_nlink = ds.node->nlink;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	817 buf->st_uid = ds.node->uid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	818 buf->st_gid = ds.node->gid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	819 buf->st_size = ds.node->size;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	820 buf->st_atime = ds.node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	821 buf->st_mtime = ds.node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	822 buf->st_ctime = ds.node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	823
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	824 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	825 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	826
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	827 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	828 // romfs_getinfo()
2261 04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	829 // Getinfo. Currently only support pathconf() and file system block usage
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	830
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	831 static int romfs_getinfo ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	832 int key, void *buf, int len )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	833 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	834 romfs_dirsearch ds;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	835 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	836
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	837 init_dirsearch( &ds, (romfs_disk )mte->data, (romfs_node )dir, name );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	838
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	839 err = romfs_find( &ds );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	840
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	841 if( err != ENOERR ) return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	842
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	843 switch( key )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	844 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	845 case FS_INFO_CONF:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	846 err = romfs_pathconf( ds.node, (struct cyg_pathconf_info *)buf );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	847 break;
2261 04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	848 #if defined(CYGSEM_FILEIO_BLOCK_USAGE)
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	849 case FS_INFO_BLOCK_USAGE: {
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	850 struct cyg_fs_block_usage usage = (struct cyg_fs_block_usage ) buf;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	851 struct romfs_disk disk = (struct romfs_disk) mte->data;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	852 usage->total_blocks = disk->disksize;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	853 usage->free_blocks = 0;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	854 usage->block_size = 1;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	855 return ENOERR;
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	856 }
04c9eb8c07e9 * src/romfs.c (romfs_getinfo): Support for block usage call. asl parents: 1787 diff changeset	857 #endif
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	858 default:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	859 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	860 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	861 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	862 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	863
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	864 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	865 // romfs_setinfo()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	866 // Setinfo. Nothing to support here at present.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	867
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	868 static int romfs_setinfo ( cyg_mtab_entry mte, cyg_dir dir, const char name,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	869 int key, void *buf, int len )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	870 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	871 // No setinfo keys supported at present
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	872
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	873 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	874 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	875
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	876
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	877 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	878 // File operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	879
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	880 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	881 // romfs_fo_read()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	882 // Read data from the file.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	883
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	884 static int romfs_fo_read (struct CYG_FILE_TAG fp, struct CYG_UIO_TAG uio)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	885 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	886 romfs_node node = (romfs_node )fp->f_data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	887 int i;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	888 off_t pos = fp->f_offset;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	889 ssize_t resid = uio->uio_resid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	890
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	891 // Loop over the io vectors until there are none left
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	892 for( i = 0; i < uio->uio_iovcnt; i++ )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	893 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	894 cyg_iovec *iov = &uio->uio_iov[i];
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	895 char buf = (char )iov->iov_base;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	896 off_t len = iov->iov_len;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	897
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	898 // Loop over each vector filling it with data from the file.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	899 while( len > 0 && pos < node->size )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	900 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	901 cyg_uint8 *fbuf;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	902 size_t bsize;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	903 off_t l = len;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	904 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	905
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	906 // Get a pointer to the data at offset _pos_.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	907 err = findbuffer_node( (romfs_disk *)fp->f_mte->data, node, pos, &fbuf, &bsize );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	908
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	909 if( err != ENOERR )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	910 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	911
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	912 // adjust size to end of file if necessary
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	913 if( l > node->size-pos )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	914 l = node->size-pos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	915
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	916 // adjust size to the amount of contiguous data we can see
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	917 // at present.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	918 if( l > bsize )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	919 l = bsize;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	920
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	921 // copy data out
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	922 memcpy( buf, fbuf, l );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	923
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	924 // Update working vars
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	925 len -= l;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	926 buf += l;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	927 pos += l;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	928 resid -= l;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	929 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	930 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	931
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	932 // We successfully read some data
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	933 // Update the file offset and transfer residue.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	934
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	935 uio->uio_resid = resid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	936 fp->f_offset = pos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	937
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	938 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	939 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	940
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	941 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	942 // romfs_fo_lseek()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	943 // Seek to a new file position.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	944
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	945 static int romfs_fo_lseek (struct CYG_FILE_TAG fp, off_t apos, int whence )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	946 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	947 romfs_node node = (romfs_node )fp->f_data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	948 off_t pos = *apos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	949
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	950 switch( whence )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	951 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	952 case SEEK_SET:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	953 // Pos is already where we want to be.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	954 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	955
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	956 case SEEK_CUR:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	957 // Add pos to current offset.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	958 pos += fp->f_offset;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	959 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	960
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	961 case SEEK_END:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	962 // Add pos to file size.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	963 pos += node->size;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	964 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	965
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	966 default:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	967 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	968 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	969
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	970 // Check that pos is still within current file size, or at the
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	971 // very end.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	972 if( pos < 0 \|\| pos > node->size )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	973 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	974
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	975 // All OK, set fp offset and return new position.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	976 *apos = fp->f_offset = pos;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	977
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	978 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	979 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	980
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	981 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	982 // romfs_fo_ioctl()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	983 // Handle ioctls. Currently none are defined.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	984
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	985 static int romfs_fo_ioctl (struct CYG_FILE_TAG *fp, CYG_ADDRWORD com,
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	986 CYG_ADDRWORD data)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	987 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	988 // No Ioctls currenly defined.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	989
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	990 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	991 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	992
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	993 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	994 // romfs_fo_fsync().
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	995 // Force the file out to data storage.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	996
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	997 static int romfs_fo_fsync (struct CYG_FILE_TAG *fp, int mode )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	998 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	999 // Data is always permanently where it belongs, nothing to do
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1000 // here.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1001
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1002 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1003 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1004
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1005 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1006 // romfs_fo_close()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1007 // Close a file. We just clear out the data pointer.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1008
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1009 static int romfs_fo_close (struct CYG_FILE_TAG *fp)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1010 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1011 fp->f_data = 0; // zero data pointer
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1012
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1013 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1014 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1015
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1016 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1017 //romfs_fo_fstat()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1018 // Get file status.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1019
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1020 static int romfs_fo_fstat (struct CYG_FILE_TAG fp, struct stat buf )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1021 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1022 romfs_node node = (romfs_node )fp->f_data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1023 romfs_disk disk = (romfs_disk)(fp->f_mte->data);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1024
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1025 // Fill in the status
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1026 buf->st_mode = node->mode;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1027 buf->st_ino = (ino_t)(node - &disk->node[0]);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1028 buf->st_dev = disk->dev_id;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1029 buf->st_nlink = node->nlink;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1030 buf->st_uid = node->uid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1031 buf->st_gid = node->gid;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1032 buf->st_size = node->size;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1033 buf->st_atime = node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1034 buf->st_mtime = node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1035 buf->st_ctime = node->ctime;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1036
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1037 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1038 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1039
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1040 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1041 // romfs_fo_getinfo()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1042 // Get info. Currently only supports fpathconf().
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1043
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1044 static int romfs_fo_getinfo (struct CYG_FILE_TAG fp, int key, void buf, int len )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1045 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1046 romfs_node node = (romfs_node )fp->f_data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1047 int err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1048
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1049 switch( key )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1050 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1051 case FS_INFO_CONF:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1052 err = romfs_pathconf( node, (struct cyg_pathconf_info *)buf );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1053 break;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1054
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1055 default:
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1056 err = EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1057 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1058 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1059 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1060
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1061 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1062 // romfs_fo_setinfo()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1063 // Set info. Nothing supported here.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1064
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1065 static int romfs_fo_setinfo (struct CYG_FILE_TAG fp, int key, void buf, int len )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1066 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1067 // No setinfo key supported at present
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1068
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1069 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1070 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1071
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1072
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1073 //==========================================================================
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1074 // Directory operations
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1075
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1076 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1077 // romfs_fo_dirread()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1078 // Read a single directory entry from a file.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1079
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1080 static int romfs_fo_dirread (struct CYG_FILE_TAG fp, struct CYG_UIO_TAG uio)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1081 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1082 romfs_node dir = (romfs_node )fp->f_data;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1083 off_t pos = fp->f_offset;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1084 int err = ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1085 struct dirent ent = (struct dirent )uio->uio_iov[0].iov_base;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1086 char *nbuf = ent->d_name;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1087 int nlen = sizeof(ent->d_name)-1;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1088 off_t len = uio->uio_iov[0].iov_len;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1089 romfs_dirent *d = NULL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1090 cyg_uint8 *buf;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1091 size_t size;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1092 int i;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1093
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1094 if( len < sizeof(struct dirent) )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1095 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1096
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1097 // Get the next entry
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1098 err = findbuffer_node( (romfs_disk *)fp->f_mte->data, dir, pos, &buf, &size );
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1099 if( err != ENOERR \|\| size == 0 \|\| pos >= dir->size )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1100 return err;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1101
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1102 d = (romfs_dirent *)buf;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1103
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1104 for ( i = 0 ; i < nlen && d->name[i] ; i++, nbuf++ )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1105 *nbuf = d->name[i];
2474 82f8f3f7c561 * cdl/romfs.cdl: Use CYGPKG_FS_ROM_RET_DIRENT_DTYPE to control asl parents: 2261 diff changeset	1106 #ifdef CYGPKG_FS_ROM_RET_DIRENT_DTYPE
82f8f3f7c561 * cdl/romfs.cdl: Use CYGPKG_FS_ROM_RET_DIRENT_DTYPE to control asl parents: 2261 diff changeset	1107 ent->d_type = (((romfs_disk *)fp->f_mte->data)->node[d->node]).mode;
82f8f3f7c561 * cdl/romfs.cdl: Use CYGPKG_FS_ROM_RET_DIRENT_DTYPE to control asl parents: 2261 diff changeset	1108 #endif
156 b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1109
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1110 // A successful read. Terminate the entry name with a NUL, set the
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1111 // residue and set the file offset to restart at the next
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1112 // directory entry.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1113
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1114 *nbuf = '\0';
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1115 uio->uio_resid -= sizeof(struct dirent);
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1116 fp->f_offset = d->next;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1117
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1118 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1119 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1120
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1121 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1122 // romfs_fo_dirlseek()
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1123 // Seek directory to start.
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1124
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1125 static int romfs_fo_dirlseek (struct CYG_FILE_TAG fp, off_t pos, int whence )
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1126 {
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1127 // Only allow SEEK_SET to zero
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1128
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1129 if( whence != SEEK_SET \|\| *pos != 0)
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1130 return EINVAL;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1131
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1132 *pos = fp->f_offset = 0;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1133
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1134 return ENOERR;
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1135 }
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1136
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1137 // -------------------------------------------------------------------------
b939e9cada46 Merge from eCos master repository on 2001-03-29-21:44:39-BST jlarmour parents: diff changeset	1138 // EOF romfs.c

Mercurial > ecos

annotate packages/fs/rom/current/src/romfs.c @ 2980:8d5bed76c596