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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
Download Patch File Download Diff File Expand all files Collapse all files

68
sysdeps/unix/sysv/linux/openat.c
View File

@ -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
@ -23,12 +23,12 @@
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <kernel-features.h>
#include <sysdep-cancel.h>
#ifndef OPENAT
#if !defined OPENAT && !defined __ASSUME_ATFCTS
# define OPENAT openat
# define MORE_OFLAGS 0
void
@ -53,6 +53,8 @@ __atfct_seterrno (int errval, int fd, const char *buf)
__set_errno (errval);
}
int __have_atfcts;
#endif
/* Open FILE with access OFLAG. Interpret relative paths relative to
@ -64,6 +66,49 @@ OPENAT (fd, file, oflag)
const char *file;
int oflag;
{
mode_t mode = 0;
if (oflag & O_CREAT)
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);
va_end (arg);
}
/* We have to add the O_LARGEFILE flag for openat64. */
#ifdef MORE_OFLAGS
oflag |= MORE_OFLAGS;
#endif
INTERNAL_SYSCALL_DECL (err);
int res;
#ifdef __NR_openat
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
if (SINGLE_THREAD_P)
res = INLINE_SYSCALL (openat, 4, fd, file, oflag, mode);
else
{
int oldtype = LIBC_CANCEL_ASYNC ();
res = INLINE_SYSCALL (openat, 4, fd, file, oflag, mode);
LIBC_CANCEL_RESET (oldtype);
}
# ifndef __ASSUME_ATFCTS
if (res == -1 && errno == ENOSYS)
__have_atfcts = -1;
else
# endif
return res;
}
#endif
#ifndef __ASSUME_ATFCTS
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
@ -84,25 +129,13 @@ OPENAT (fd, file, oflag)
file = buf;
}
mode_t mode = 0;
if (oflag & O_CREAT)
{
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);
va_end (arg);
}
INTERNAL_SYSCALL_DECL (err);
int res;
if (SINGLE_THREAD_P)
res = INTERNAL_SYSCALL (open, err, 3, file, oflag | MORE_OFLAGS, mode);
res = INTERNAL_SYSCALL (open, err, 3, file, oflag, mode);
else
{
int oldtype = LIBC_CANCEL_ASYNC ();
res = INTERNAL_SYSCALL (open, err, 3, file, oflag | MORE_OFLAGS, mode);
res = INTERNAL_SYSCALL (open, err, 3, file, oflag, mode);
LIBC_CANCEL_RESET (oldtype);
}
@ -114,4 +147,5 @@ OPENAT (fd, file, oflag)
}
return res;
#endif
}