2012-08-01 Joseph Myers <joseph@codesourcery.com>
+ * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_FCNTL64):
+ Remove all definitions.
+ * sysdeps/unix/sysv/linux/i386/fcntl.c: Do not include
+ <kernel-features.h>.
+ [!__ASSUME_FCNTL64] (__have_no_fcntl64): Remove.
+ (miss_F_GETOWN_EX): Remove all definitions.
+ [NO_CANCELLATION && !__ASSUME_FCNTL64] (__fcntl_nocancel): Remove
+ macro definition.
+ [!__ASSUME_FCNTL64]: Remove conditional code.
+ [__ASSUME_FCNTL64]: Make code unconditional.
+ * sysdeps/unix/sysv/linux/i386/lockf64.c: Do not include
+ <kernel-features.h>.
+ [__NR_fcntl64 && !__ASSUME_FCNTL64] (__have_no_fcntl64): Remove.
+ (lockf64) [!__ASSUME_FCNTL64]: Remove conditional code.
+ (lockf64) [__NR_fcntl64]: Make code unconditional.
+ (lockf64) [__ASSUME_FCNTL64]: Likewise.
+
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_VFORK_SYSCALL): Remove all definitions.
* sysdeps/unix/sysv/linux/i386/vfork.S (__vfork) [__NR_vfork]:
2012-08-01 Joseph Myers <joseph@codesourcery.com>
+ * sysdeps/unix/sysv/linux/arm/kernel-features.h
+ (__ASSUME_FCNTL64): Remove.
+
* sysdeps/unix/sysv/linux/arm/kernel-features.h
(__ASSUME_VFORK_SYSCALL): Remove.
+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/hppa/kernel-features.h
+ (__ASSUME_FCNTL64): Remove.
+
2012-07-26 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/hppa/sys/epoll.h (EPOLLWAKEUP): Add new
2012-08-01 Joseph Myers <joseph@codesourcery.com>
+ * sysdeps/unix/sysv/linux/m68k/kernel-features.h
+ (__ASSUME_FCNTL64): Remove.
+
* sysdeps/unix/sysv/linux/m68k/kernel-features.h
(__ASSUME_VFORK_SYSCALL): Remove.
* sysdeps/unix/sysv/linux/m68k/vfork.S (__vfork) [__NR_vfork]:
+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/mips/kernel-features.h
+ (__ASSUME_FCNTL64): Remove.
+
2012-08-01 Steve Ellcey <sellcey@mips.com>
* sysdeps/mips/sys/asm.h [_MIPS_ISA != _MIPS_ISA_MIPS4 &&
+2012-08-01 Joseph Myers <joseph@codesourcery.com>
+
+ * sysdeps/unix/sysv/linux/tile/kernel-features.h
+ (__ASSUME_FCNTL64): Remove.
+
2012-07-26 Andreas Jaeger <aj@suse.de>
* sysdeps/unix/sysv/linux/tile/sys/ptrace.h (__ptrace_eventcodes):
#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
-/* Arm got fcntl64 in 2.4.4. */
-#define __ASSUME_FCNTL64 1
-
/* The signal frame layout changed in 2.6.18. */
#if __LINUX_KERNEL_VERSION >= 132626
# define __ASSUME_SIGFRAME_V2 1
#define __ASSUME_STAT64_SYSCALL 1
#define __ASSUME_IPC64 1
#define __ASSUME_ST_INO_64_BIT 1
-#define __ASSUME_FCNTL64 1
#define __ASSUME_GETDENTS64_SYSCALL 1
/* PA-RISC 2.6.9 kernels had the first LWS CAS support */
/* These features were surely available with 2.4.12. */
#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
-#define __ASSUME_FCNTL64 1
/* Many syscalls were added in 2.6.10 for m68k. */
#if __LINUX_KERNEL_VERSION >= 132618
/* MIPS platforms had IPC64 all along. */
#define __ASSUME_IPC64 1
-#if _MIPS_SIM == _ABIN32
-# define __ASSUME_FCNTL64 1
-#endif
-
/* Support for the eventfd2 and signalfd4 syscalls was added in 2.6.27. */
#if __LINUX_KERNEL_VERSION >= 0x02061c
# define __ASSUME_EVENTFD2 1
-/* Copyright (C) 2011 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
/* TILE glibc support starts with 2.6.36, guaranteeing many kernel features. */
#define __ASSUME_MMAP2_SYSCALL 1
#define __ASSUME_STAT64_SYSCALL 1
-#define __ASSUME_FCNTL64 1
#define __ASSUME_CLONE_THREAD_FLAGS 1
#define __ASSUME_TGKILL 1
#define __ASSUME_UTIMES 1
-/* Copyright (C) 2000,2002-2004,2006,2009,2010 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2012 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
#include <stdarg.h>
#include <sys/syscall.h>
-#include <kernel-features.h>
-#ifndef __ASSUME_FCNTL64
-/* This variable is shared with all files that check for fcntl64. */
-int __have_no_fcntl64;
-#endif
-
-#ifdef __ASSUME_F_GETOWN_EX
-# define miss_F_GETOWN_EX 0
-#elif !defined __ASSUME_FCNTL64
-static int miss_F_GETOWN_EX;
-#endif
-
-
-#if defined NO_CANCELLATION && !defined __ASSUME_FCNTL64
-# define __fcntl_nocancel __libc_fcntl
-#endif
-
-#if !defined NO_CANCELLATION || !defined __ASSUME_FCNTL64
+#ifndef NO_CANCELLATION
int
__fcntl_nocancel (int fd, int cmd, ...)
{
arg = va_arg (ap, void *);
va_end (ap);
-#ifndef __ASSUME_FCNTL64
-# ifdef __NR_fcntl64
- if (! __have_no_fcntl64)
- {
- int result = INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg);
- if (result >= 0 || errno != ENOSYS)
- return result;
-
- __have_no_fcntl64 = 1;
- }
-# endif
- switch (cmd)
- {
- case F_GETLK64:
- /* Convert arg from flock64 to flock and back. */
- {
- struct flock fl;
- struct flock64 *fl64 = arg;
- int res;
-
- fl.l_start = (off_t)fl64->l_start;
- /* Check if we can represent the values with the smaller type. */
- if ((off64_t) fl.l_start != fl64->l_start)
- {
- eoverflow:
- __set_errno (EOVERFLOW);
- return -1;
- }
- fl.l_len = (off_t) fl64->l_len;
- /* Check if we can represent the values with the smaller type. */
- if ((off64_t) fl.l_len != fl64->l_len)
- goto eoverflow;
-
- fl.l_type = fl64->l_type;
- fl.l_whence = fl64->l_whence;
- fl.l_pid = fl64->l_pid;
-
- res = INLINE_SYSCALL (fcntl, 3, fd, F_GETLK, &fl);
- if (res != 0)
- return res;
- /* Everything ok, convert back. */
- fl64->l_type = fl.l_type;
- fl64->l_whence = fl.l_whence;
- fl64->l_start = fl.l_start;
- fl64->l_len = fl.l_len;
- fl64->l_pid = fl.l_pid;
-
- return 0;
- }
- case F_SETLK64:
- case F_SETLKW64:
- /* Try to convert arg from flock64 to flock. */
- {
- struct flock fl;
- struct flock64 *fl64 = arg;
-
- fl.l_start = (off_t) fl64->l_start;
- /* Check if we can represent the values with the smaller type. */
- if ((off64_t) fl.l_start != fl64->l_start)
- goto eoverflow;
-
- fl.l_len = (off_t)fl64->l_len;
- /* Check if we can represent the values with the smaller type. */
- if ((off64_t) fl.l_len != fl64->l_len)
- {
- __set_errno (EOVERFLOW);
- return -1;
- }
- fl.l_type = fl64->l_type;
- fl.l_whence = fl64->l_whence;
- fl.l_pid = fl64->l_pid;
- assert (F_SETLK - F_SETLKW == F_SETLK64 - F_SETLKW64);
- return INLINE_SYSCALL (fcntl, 3, fd, cmd + F_SETLK - F_SETLK64, &fl);
- }
- case F_GETOWN:
- if (! miss_F_GETOWN_EX)
- {
- INTERNAL_SYSCALL_DECL (err);
- struct f_owner_ex fex;
- int res = INTERNAL_SYSCALL (fcntl, err, 3, fd, F_GETOWN_EX, &fex);
- if (!INTERNAL_SYSCALL_ERROR_P (res, err))
- return fex.type == F_OWNER_GID ? -fex.pid : fex.pid;
-
-# ifndef __ASSUME_F_GETOWN_EX
- if (INTERNAL_SYSCALL_ERRNO (res, err) == EINVAL)
- miss_F_GETOWN_EX = 1;
- else
-# endif
- {
- __set_errno (INTERNAL_SYSCALL_ERRNO (res, err));
- return -1;
- }
- }
- /* FALLTHROUGH */
- default:
- return INLINE_SYSCALL (fcntl, 3, fd, cmd, arg);
- }
- return -1;
-#else
return INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg);
-#endif /* !__ASSUME_FCNTL64 */
}
-#endif /* NO_CANCELLATION || !__ASSUME_FCNTL64 */
+#endif /* NO_CANCELLATION */
-#ifndef __fcntl_nocancel
int
__libc_fcntl (int fd, int cmd, ...)
{
arg = va_arg (ap, void *);
va_end (ap);
-# ifdef __ASSUME_FCNTL64
if (SINGLE_THREAD_P || (cmd != F_SETLKW && cmd != F_SETLKW64))
return INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg);
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (fcntl64, 3, fd, cmd, arg);
-# else
- if (SINGLE_THREAD_P || (cmd != F_SETLKW && cmd != F_SETLKW64))
- return __fcntl_nocancel (fd, cmd, arg);
-
- int oldtype = LIBC_CANCEL_ASYNC ();
-
- int result = __fcntl_nocancel (fd, cmd, arg);
-# endif
LIBC_CANCEL_RESET (oldtype);
return result;
}
-#endif
libc_hidden_def (__libc_fcntl)
weak_alias (__libc_fcntl, __fcntl)
-/* 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
#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;
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
}
# define __ASSUME_ST_INO_64_BIT 1
#endif
-/* To support locking of large files a new fcntl() syscall was introduced
- in 2.4.0-test7. */
-#if defined __i386__ || defined __sparc__
-# define __ASSUME_FCNTL64 1
-#endif
-
-/* Arm got fcntl64 in 2.4.4, PowerPC and SH have it also in 2.4.4 (I
- don't know when it got introduced). But PowerPC64 does not support
- separate FCNTL64 call, FCNTL is already 64-bit */
-#if (defined __powerpc__ || defined __sh__) \
- && !defined __powerpc64__
-# define __ASSUME_FCNTL64 1
-#endif
-
/* The getdents64 syscall was introduced in 2.4.0-test7 (but later for
MIPS n32). */
#define __ASSUME_GETDENTS64_SYSCALL 1
projects / thirdparty / glibc.git / commitdiff
