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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15140 87f5fb63-7c3d-0410-a384-fd976d0f7a62
267 lines
6.4 KiB
C
267 lines
6.4 KiB
C
/*
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* $Id: unistd_common_pathconf.c,v 1.3 2006-09-21 09:24:20 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2006 by Olaf Barthel <olsen (at) sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDLIB_NULL_POINTER_CHECK_H
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#include "stdlib_null_pointer_check.h"
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#endif /* _STDLIB_NULL_POINTER_CHECK_H */
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/****************************************************************************/
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#ifndef _UNISTD_HEADERS_H
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#include "unistd_headers.h"
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#endif /* _UNISTD_HEADERS_H */
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/****************************************************************************/
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/* The following is not part of the ISO 'C' (1994) standard. */
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/****************************************************************************/
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#ifndef ID_CON
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#define ID_CON (0x434F4E00L) /* 'CON\0' */
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#endif /*<2A>ID_CON */
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#ifndef ID_RAWCON
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#define ID_RAWCON (0x52415700L) /* 'RAW\0' */
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#endif /* ID_RAWCON */
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/****************************************************************************/
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struct fs_info
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{
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ULONG dos_type;
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int name_max,path_max;
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int link_max,symlink_max;
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int file_size_bits;
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};
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/****************************************************************************/
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static const struct fs_info fs_info[] =
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{
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{ID_NO_DISK_PRESENT, 0, 0, 0, 0, 0}, /* No disk */
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{ID_UNREADABLE_DISK, 0, 0, 0, 0, 0}, /* BAD\0 */
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{ID_BUSY_DISK, 0, 0, 0, 0, 0}, /* BUSY - Diskchange in progress? */
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{ID_CON, 0, 0, 0, 0, 0}, /* CON\0 - Not really a disk. */
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{ID_RAWCON, 0, 0, 0, 0, 0}, /* RAW\0 - Not really a disk. */
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{ID_NOT_REALLY_DOS, 0, 0, 0, 0, 0}, /* Unreadable disk. */
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{ID_KICKSTART_DISK, 0, 0, 0, 0, 0}, /* Kickstart disk. */
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{ID_MSDOS_DISK, 8, 31, 0, 0, 30}, /* MSDOS - TODO: Check what the limits really are. */
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{ID_DOS_DISK, 30, 254, -1, -1, 31}, /* DOS\0 = OFS */
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{ID_FFS_DISK, 30, 254, -1, -1, 31}, /* DOS\1 = FFS */
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{ID_INTER_DOS_DISK, 30, 254, -1, -1, 31}, /* DOS\2 = OFS INTL */
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{ID_INTER_FFS_DISK, 30, 254, -1, -1, 31}, /* DOS\3 = FFS INTL */
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{ID_FASTDIR_DOS_DISK, 30, 254, -1, -1, 31}, /* DOS\4 = OFS DC */
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{ID_FASTDIR_FFS_DISK, 30, 254, -1, -1, 31}, /* DOS\5 = FFS DC */
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{ID_LONGNAME_DOS_DISK, 107, 8192, -1, -1, 31}, /* DOS\6 = OFS LONGNAMES */
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{ID_LONGNAME_FFS_DISK, 107, 8192, -1, -1, 63}, /* DOS\7 = FFS LONGNAMES */
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{0x53465300, 107, 8192, 0, -1, 31}, /* SFS\0 = Smartfilesystem */
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{0x53465302, 107, 8192, 0, -1, 63}, /* SFS\2 = Smartfilesystem2 */
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{0x50465300, 30, 254, 0, 0, 31}, /* PFS\0 = Professional File System */
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{0x46545854, 0, 0, 0, 0, 0}, /* FTXT - Textclip device */
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};
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/****************************************************************************/
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long
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__pathconf(struct MsgPort *port,int name)
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{
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ULONG dos_type = 0;
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size_t fs_index = 0;
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long ret = -1;
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if(port != NULL)
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{
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D_S(struct InfoData,id);
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if(DoPkt(port,ACTION_IS_FILESYSTEM,0,0,0,0,0) == DOSFALSE) /* Not a filesystem. */
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{
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SHOWMSG("Not a filesystem.");
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__set_errno(ENODEV);
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goto out;
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}
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if(DoPkt(port,ACTION_DISK_INFO,MKBADDR(id),0,0,0,0)) /* Managed to obtain disk info. */
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{
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size_t i;
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switch(id->id_DiskState)
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{
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case ID_VALIDATING: /* Consider this an error condition? */
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case ID_WRITE_PROTECTED:
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case ID_VALIDATED:
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dos_type = id->id_DiskType;
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/* See if we know anything about this file-system */
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for(i = 0 ; i < NUM_ENTRIES(fs_info) ; i++)
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{
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if(dos_type == fs_info[i].dos_type)
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{
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fs_index = i;
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break;
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}
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}
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break;
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default:
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SHOWMSG("Invalid disk state.");
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break;
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}
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}
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else
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{
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/* Treat error as no disk present by having default fs_index=0 */
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SHOWMSG("Unable to query DISK_INFO");
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}
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}
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switch(name)
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{
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case _PC_FILESIZEBITS:
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ret = fs_info[fs_index].file_size_bits;
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break;
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case _PC_LINK_MAX:
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ret = fs_info[fs_index].link_max;
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break;
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case _PC_MAX_CANON:
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ret = 510; /* I could not find any documentation regarding this. */
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break;
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case _PC_MAX_INPUT:
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#if defined(__amigaos4__)
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{
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uint32 Bufsize;
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struct TagItem TagList[2]=
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{
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{DC_FHBufferR, (ULONG)&Bufsize},
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{TAG_DONE, 0}
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};
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DosControl(TagList);
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ret = Bufsize; /* Default is 2048 bytes. */
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}
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#else
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{
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ret = 204;
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}
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#endif /* __amigaos4__ */
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break;
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case _PC_NAME_MAX:
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ret = fs_info[fs_index].name_max;
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break;
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case _PC_PATH_MAX:
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ret = fs_info[fs_index].path_max;
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break;
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case _PC_PIPE_BUF:
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ret = 512; /* One buffer. The PIPE: device usually has 8 of these. */
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break;
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case _PC_XATTR_ENABLED:
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ret = 0;
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break;
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case _PC_XATTR_EXISTS:
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ret = 0;
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break;
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case _PC_CHOWN_RESTRICTED:
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ret = 0;
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break;
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case _PC_NO_TRUNC:
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ret = 0;
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break;
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case _PC_VDISABLE:
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ret = 0; /* TODO: Implement this in the termios emulation. */
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break;
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case _PC_ASYNC_IO:
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ret = 0;
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break;
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case _PC_PRIO_IO:
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ret = 0;
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break;
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case _PC_SYNC_IO:
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ret = 0;
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break;
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case _PC_SYMLINK_MAX:
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ret = fs_info[fs_index].symlink_max;
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break;
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case _PC_DOSTYPE: /* Amiga-specific extension. */
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ret = dos_type;
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break;
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default:
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SHOWMSG("Invalid option name");
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__set_errno(EINVAL);
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goto out;
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}
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out:
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return(ret);
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}
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