1997-04-26 17:21:57 +04:00
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/*
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* fgetversion.c - Get a file version on an ext2 file system
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*
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* Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
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* Laboratoire MASI, Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* This file can be redistributed under the terms of the GNU Library General
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* Public License
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*/
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/*
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* History:
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* 93/10/30 - Creation
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*/
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2000-12-02 09:11:44 +03:00
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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1997-04-26 17:58:21 +04:00
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#if HAVE_ERRNO_H
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1997-04-26 17:21:57 +04:00
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#include <errno.h>
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1997-04-26 17:58:21 +04:00
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#endif
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#if HAVE_UNISTD_H
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1997-04-26 17:21:57 +04:00
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#include <unistd.h>
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1997-04-26 17:58:21 +04:00
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#endif
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#include <fcntl.h>
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1997-04-26 17:21:57 +04:00
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#include <sys/ioctl.h>
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#include "e2p.h"
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2000-12-02 09:11:44 +03:00
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#ifdef O_LARGEFILE
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#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE)
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#else
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#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK)
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#endif
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1997-04-26 17:21:57 +04:00
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int fgetversion (const char * name, unsigned long * version)
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{
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1997-04-26 17:58:21 +04:00
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#if HAVE_EXT2_IOCTLS
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2004-02-01 05:16:35 +03:00
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#if !APPLE_DARWIN
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2002-07-14 23:58:38 +04:00
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int fd, r, ver, save_errno = 0;
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1997-04-26 17:21:57 +04:00
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2000-12-02 09:11:44 +03:00
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fd = open (name, OPEN_FLAGS);
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1997-04-26 17:21:57 +04:00
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if (fd == -1)
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2002-07-14 23:58:38 +04:00
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return -1;
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ChangeLog, e2fsck.h, pass4.c, super.c:
super.c, e2fsck.h: Always declare e2fsck_get_device_size() as an
extern in e2fsck.h to prevent -Wall warnings.
pass4.c (e2fsck_pass4): Remove unused variable 'j'.
super.c (check_super_block): Fix broken superblock sanity check when
calculating blocks_per_group if s_log_frag_size != s_log_block_size.
Since we don't support fragments, this isn't a bug deal, but it's good
to get it fixed.
ChangeLog, Makefile.elf-lib:
Makefile.elf-lib (installdirs): Change use of DLL_INSTALL_DIR to
ELF_INSTALL_DIR. (Doesn't make a difference currently, but it's
correct this way.)
ChangeLog, fgetversion.c, getversion.c:
getversion.c (getversion): Return 0 if there's no error.
fgetversion.c (fgetversion): Pass the address of the temporary
variable instead of the unitialized variable to the
EXT2_IOC_GETVERSION ioctl.
1998-03-30 05:16:26 +04:00
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r = ioctl (fd, EXT2_IOC_GETVERSION, &ver);
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2002-07-14 23:58:38 +04:00
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if (r == -1)
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save_errno = errno;
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1998-03-09 16:07:09 +03:00
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*version = ver;
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1997-04-26 17:21:57 +04:00
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close (fd);
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2002-07-14 23:58:38 +04:00
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if (save_errno)
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errno = save_errno;
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1997-04-26 17:21:57 +04:00
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return r;
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2004-02-01 05:16:35 +03:00
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#else
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int ver=-1, err;
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err = syscall(SYS_fsctl, name, EXT2_IOC_GETVERSION, &ver, 0);
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*version = ver;
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return(err);
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#endif
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1997-04-26 17:58:21 +04:00
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#else /* ! HAVE_EXT2_IOCTLS */
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extern int errno;
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errno = EOPNOTSUPP;
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return -1;
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#endif /* ! HAVE_EXT2_IOCTLS */
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1997-04-26 17:21:57 +04:00
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}
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