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Diffstat (limited to 'lib/ext2fs/llseek.c')
-rw-r--r--lib/ext2fs/llseek.c67
1 files changed, 15 insertions, 52 deletions
diff --git a/lib/ext2fs/llseek.c b/lib/ext2fs/llseek.c
index 45f21d0..9118b23 100644
--- a/lib/ext2fs/llseek.c
+++ b/lib/ext2fs/llseek.c
@@ -35,68 +35,32 @@
#ifdef __linux__
-#if defined(HAVE_LSEEK64) && defined(HAVE_LSEEK64_PROTOTYPE)
-
-#define my_llseek lseek64
-
-#else
-#if defined(HAVE_LLSEEK)
-#include <sys/syscall.h>
-
-#ifndef HAVE_LLSEEK_PROTOTYPE
-extern long long llseek (int fd, long long offset, int origin);
-#endif
-
-#define my_llseek llseek
-
-#else /* ! HAVE_LLSEEK */
-
-#if SIZEOF_LONG == SIZEOF_LONG_LONG || _FILE_OFFSET_BITS+0 == 64
-
-#define my_llseek lseek
-
-#else /* SIZEOF_LONG != SIZEOF_LONG_LONG */
-
#include <linux/unistd.h>
-#ifndef __NR__llseek
-#define __NR__llseek 140
-#endif
-
-#ifndef __i386__
-static int _llseek (unsigned int, unsigned long,
- unsigned long, ext2_loff_t *, unsigned int);
-
-static _syscall5(int,_llseek,unsigned int,fd,unsigned long,offset_high,
- unsigned long, offset_low,ext2_loff_t *,result,
- unsigned int, origin);
-#endif
-
static ext2_loff_t my_llseek (int fd, ext2_loff_t offset, int origin)
{
- ext2_loff_t result;
+#if SIZEOF_OFF_T >= 8
+ return lseek(fd, offset, origin);
+#elif HAVE_LSEEK64_PROTOTYPE
+ return lseek64(fd, offset, origin);
+#elif HAVE_LLSEEK_PROTOTYPE
+ return llseek(fd, offset, origin);
+#elif defined(__NR__llseek)
+ loff_t result;
int retval;
-
-#ifndef __i386__
- retval = _llseek(fd, ((unsigned long long) offset) >> 32,
+ retval = syscall(__NR__llseek, fd,
+ (unsigned long)(offset >> 32),
+ (unsigned long)(offset & 0xffffffff),
+ &result, origin);
+ return (retval == -1 ? retval : result);
#else
- retval = syscall(__NR__llseek, fd, (unsigned long long) (offset >> 32),
+ errno = ENOSYS;
+ return -1;
#endif
- ((unsigned long long) offset) & 0xffffffff,
- &result, origin);
- return (retval == -1 ? (ext2_loff_t) retval : result);
}
-#endif /* SIZE_LONG == SIZEOF_LONG_LONG */
-
-#endif /* HAVE_LLSEEK */
-#endif /* defined(HAVE_LSEEK64) && defined(HAVE_LSEEK64_PROTOTYPE) */
-
ext2_loff_t ext2fs_llseek (int fd, ext2_loff_t offset, int origin)
{
-#if SIZEOF_OFF_T >= SIZEOF_LONG_LONG
- return my_llseek (fd, offset, origin);
-#else
ext2_loff_t result;
static int do_compat = 0;
@@ -117,7 +81,6 @@ ext2_loff_t ext2fs_llseek (int fd, ext2_loff_t offset, int origin)
return -1;
}
return result;
-#endif
}
#else /* !linux */