diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/linkat.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/linkat.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/sysdeps/unix/sysv/linux/linkat.c b/sysdeps/unix/sysv/linux/linkat.c deleted file mode 100644 index cfd0e18223..0000000000 --- a/sysdeps/unix/sysv/linux/linkat.c +++ /dev/null @@ -1,115 +0,0 @@ -/* 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 - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <errno.h> -#include <fcntl.h> -#include <string.h> -#include <stdio.h> -#include <sysdep.h> -#include <unistd.h> -#include <kernel-features.h> - - -/* Make a link to FROM named TO but relative paths in TO and FROM are - interpreted relative to FROMFD and TOFD respectively. */ -int -linkat (fromfd, from, tofd, to, flags) - int fromfd; - const char *from; - int tofd; - const char *to; - int flags; -{ - int result; - -#ifdef __NR_linkat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - result = INLINE_SYSCALL (linkat, 5, fromfd, from, tofd, to, flags); -# ifndef __ASSUME_ATFCTS - if (result == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return result; - } -#endif - -#ifndef __ASSUME_ATFCTS - /* Without kernel support we cannot handle AT_SYMLINK_FOLLOW. */ - if (flags != 0) - { - __set_errno (EINVAL); - return -1; - } - - static const char procfd[] = "/proc/self/fd/%d/%s"; - char *buffrom = NULL; - - if (fromfd != AT_FDCWD && from[0] != '/') - { - size_t filelen = strlen (from); - /* Buffer for the path name we are going to use. It consists of - - the string /proc/self/fd/ - - the file descriptor number - - the file name provided. - The final NUL is included in the sizeof. A bit of overhead - due to the format elements compensates for possible negative - numbers. */ - size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; - buffrom = alloca (buflen); - - __snprintf (buffrom, buflen, procfd, fromfd, from); - from = buffrom; - } - - char *bufto = NULL; - - if (tofd != AT_FDCWD && to[0] != '/') - { - size_t filelen = strlen (to); - /* Buffer for the path name we are going to use. It consists of - - the string /proc/self/fd/ - - the file descriptor number - - the file name provided. - The final NUL is included in the sizeof. A bit of overhead - due to the format elements compensates for possible negative - numbers. */ - size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; - bufto = alloca (buflen); - - __snprintf (bufto, buflen, procfd, tofd, to); - to = bufto; - } - - INTERNAL_SYSCALL_DECL (err); - - result = INTERNAL_SYSCALL (link, err, 2, from, to); - - if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) - { - __atfct_seterrno_2 (INTERNAL_SYSCALL_ERRNO (result, err), tofd, bufto, - fromfd, buffrom); - result = -1; - } - - return result; -#endif -} |