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authorJoseph Myers <joseph@codesourcery.com>2012-08-01 21:27:58 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-08-01 21:27:58 +0000
commit23bddc0668391d97710f7d10c8cb04dc305112ea (patch)
tree0adaa0c734216915579c5da84dfb4fe87fc53874 /sysdeps/unix/sysv/linux/i386/lockf64.c
parenta9f1039f0a6a3b5e453107ae2e4c5deff0926ea6 (diff)
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Remove __ASSUME_FCNTL64.
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/lockf64.c')
-rw-r--r--sysdeps/unix/sysv/linux/i386/lockf64.c135
1 files changed, 5 insertions, 130 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/lockf64.c b/sysdeps/unix/sysv/linux/i386/lockf64.c
index 6e7603e529..1caf9778e8 100644
--- a/sysdeps/unix/sysv/linux/i386/lockf64.c
+++ b/sysdeps/unix/sysv/linux/i386/lockf64.c
@@ -1,5 +1,4 @@
-/* Copyright (C) 1994,1996,1997,1998,1999,2000,2003,2006
- Free Software Foundation, Inc.
+/* Copyright (C) 1994-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -23,66 +22,24 @@
#include <string.h>
#include <sysdep.h>
-#include <kernel-features.h>
-
/* lockf is a simplified interface to fcntl's locking facilities. */
-#ifdef __NR_fcntl64
-# if __ASSUME_FCNTL64 == 0
-/* This variable is shared with all files that check for fcntl64. The
- declaration is in fcntl.c. */
-extern int __have_no_fcntl64;
-# endif
-#endif
-
int
lockf64 (int fd, int cmd, off64_t len64)
{
-#if __ASSUME_FCNTL64 == 0
- struct flock fl;
- off_t len = (off_t) len64;
-#endif
-#ifdef __NR_fcntl64
struct flock64 fl64;
int cmd64;
-#endif
-
-#if __ASSUME_FCNTL64 == 0
- memset ((char *) &fl, '\0', sizeof (fl));
- /* lockf is always relative to the current file position. */
- fl.l_whence = SEEK_CUR;
- fl.l_start = 0;
- fl.l_len = len;
-#endif
-#ifdef __NR_fcntl64
-# if __ASSUME_FCNTL64 == 0
- if (!__have_no_fcntl64)
- {
-# endif
- memset ((char *) &fl64, '\0', sizeof (fl64));
- fl64.l_whence = SEEK_CUR;
- fl64.l_start = 0;
- fl64.l_len = len64;
-# if __ASSUME_FCNTL64 == 0
- }
-# endif
-#endif
+ memset ((char *) &fl64, '\0', sizeof (fl64));
+ fl64.l_whence = SEEK_CUR;
+ fl64.l_start = 0;
+ fl64.l_len = len64;
-#if __ASSUME_FCNTL64 == 0 && !defined __NR_fcntl64
- if (len64 != (off64_t) len)
- {
- /* We can't represent the length. */
- __set_errno (EOVERFLOW);
- return -1;
- }
-#endif
switch (cmd)
{
case F_TEST:
/* Test the lock: return 0 if FD is unlocked or locked by this process;
return -1, set errno to EACCES, if another process holds the lock. */
-#if __ASSUME_FCNTL64 > 0
fl64.l_type = F_RDLCK;
if (INLINE_SYSCALL (fcntl64, 3, fd, F_GETLK64, &fl64) < 0)
return -1;
@@ -90,104 +47,22 @@ lockf64 (int fd, int cmd, off64_t len64)
return 0;
__set_errno (EACCES);
return -1;
-#else
-# ifdef __NR_fcntl64
- if (!__have_no_fcntl64)
- {
- int res;
-
- fl64.l_type = F_RDLCK;
- res = INLINE_SYSCALL (fcntl64, 3, fd, F_GETLK64, &fl64);
- /* If errno == ENOSYS try the 32bit interface if len64 can
- be represented with 32 bits. */
-
- if (res == 0)
- {
- if (fl64.l_type == F_UNLCK || fl64.l_pid == __getpid ())
- return 0;
- __set_errno (EACCES);
- return -1;
- }
- else if (errno == ENOSYS)
- __have_no_fcntl64 = 1;
- else
- /* res < 0 && errno != ENOSYS. */
- return -1;
- if (len64 != (off64_t) len)
- {
- /* We can't represent the length. */
- __set_errno (EOVERFLOW);
- return -1;
- }
- }
-# endif
- fl.l_type = F_RDLCK;
- if (__fcntl (fd, F_GETLK, &fl) < 0)
- return -1;
- if (fl.l_type == F_UNLCK || fl.l_pid == __getpid ())
- return 0;
- __set_errno (EACCES);
- return -1;
-#endif
case F_ULOCK:
-#if __ASSUME_FCNTL64 == 0
- fl.l_type = F_UNLCK;
- cmd = F_SETLK;
-#endif
-#ifdef __NR_fcntl64
fl64.l_type = F_UNLCK;
cmd64 = F_SETLK64;
-#endif
break;
case F_LOCK:
-#if __ASSUME_FCNTL64 == 0
- fl.l_type = F_WRLCK;
- cmd = F_SETLKW;
-#endif
-#ifdef __NR_fcntl64
fl64.l_type = F_WRLCK;
cmd64 = F_SETLKW64;
-#endif
break;
case F_TLOCK:
-#if __ASSUME_FCNTL64 == 0
- fl.l_type = F_WRLCK;
- cmd = F_SETLK;
-#endif
-#ifdef __NR_fcntl64
fl64.l_type = F_WRLCK;
cmd64 = F_SETLK64;
-#endif
break;
default:
__set_errno (EINVAL);
return -1;
}
-#if __ASSUME_FCNTL64 > 0
return INLINE_SYSCALL (fcntl64, 3, fd, cmd64, &fl64);
-#else
-# ifdef __NR_fcntl64
-
- if (!__have_no_fcntl64)
- {
- int res = INLINE_SYSCALL (fcntl64, 3, fd, cmd64, &fl64);
-
- /* If errno == ENOSYS try the 32bit interface if len64 can
- be represented with 32 bits. */
- if (res == 0 || errno != ENOSYS)
- return res;
-
- __have_no_fcntl64 = 1;
-
- if (len64 != (off64_t) len)
- {
- /* We can't represent the length. */
- __set_errno (EOVERFLOW);
- return -1;
- }
- }
-# endif
- return __fcntl (fd, cmd, &fl);
-#endif
}