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* include/fcntl.h: Declare __have_atfcts.

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* sysdeps/unix/sysv/linux/faccessat.c: Use syscall if available.
	* sysdeps/unix/sysv/linux/fchmodat.c: Likewise.
	* sysdeps/unix/sysv/linux/fchownat.c: Likewise.
	* sysdeps/unix/sysv/linux/futimesat.c: Likewise.
	* sysdeps/unix/sysv/linux/linkat.c: Likewise.
	* sysdeps/unix/sysv/linux/mkdirat.c: Likewise.
	* sysdeps/unix/sysv/linux/openat.c: Likewise.
	* sysdeps/unix/sysv/linux/readlinkat.c: Likewise.
	* sysdeps/unix/sysv/linux/renameat.c: Likewise.
	* sysdeps/unix/sysv/linux/symlinkat.c: Likewise.
	* sysdeps/unix/sysv/linux/unlinkat.c: Likewise.
	* sysdeps/unix/sysv/linux/xmknodat.c: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/kernel-features.h: Define __ASSUME_PSELECT,
	__ASSUME_PPOLL, and __ASSUME_ATFCTS if possible.

	* io/ppoll.c: New file.
	* io/Makefile (routines): Add ppoll.
	(CFLAGS-ppoll.c): Define.
	* io/Versions: Export ppoll for GLIBC_2.4.
	* io/sys/poll.h: Declare ppoll.
	* sysdeps/unix/sysv/linux/ppoll.c: New file.

	* misc/pselect.c: Make it possible to include this file to define
	the generic code as a static function.
	* sysdeps/unix/sysv/linux/pselect.c: New file.
This commit is contained in:
Ulrich Drepper
2006-01-20 07:08:05 +00:00
parent 93c04024a6
commit 7c65e9001b
25 changed files with 733 additions and 77 deletions
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24
sysdeps/unix/sysv/linux/readlinkat.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2005 Free Software Foundation, Inc.
/* Copyright (C) 2005, 2006 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
@ -24,6 +24,7 @@
#include <string.h>
#include <sysdep.h>
#include <unistd.h>
#include <kernel-features.h>
/* Read the contents of the symbolic link PATH relative to FD into no
@ -35,6 +36,24 @@ readlinkat (fd, path, buf, len)
char *buf;
size_t len;
{
int result;
#ifdef __NR_readlinkat
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INLINE_SYSCALL (readlinkat, 4, fd, path, buf, len);
# ifndef __ASSUME_ATFCTS
if (result == -1 && errno == ENOSYS)
__have_atfcts = -1;
else
# endif
return result;
}
#endif
#ifndef __ASSUME_ATFCTS
char *pathbuf = NULL;
if (fd != AT_FDCWD && path[0] != '/')
@ -57,7 +76,7 @@ readlinkat (fd, path, buf, len)
INTERNAL_SYSCALL_DECL (err);
int result = INTERNAL_SYSCALL (readlink, err, 3, path, buf, len);
result = INTERNAL_SYSCALL (readlink, err, 3, path, buf, len);
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
{
@ -66,4 +85,5 @@ readlinkat (fd, path, buf, len)
}
return result;
#endif
}