diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c b/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c new file mode 100644 index 0000000000..4003b6e63f --- /dev/null +++ b/sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c @@ -0,0 +1,109 @@ +/* Copyright (C) 2005-2014 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, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <string.h> +#include <sys/stat.h> +#include <kernel_stat.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include <kernel-features.h> + +#include <xstatconv.h> + +/* Get information about the file NAME in BUF. */ + +int +__fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag) +{ + if (__builtin_expect (vers != _STAT_VER_LINUX, 0)) + { + __set_errno (EINVAL); + return -1; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + struct kernel_stat kst; + +#ifdef __NR_newfstatat +# ifndef __ASSUME_ATFCTS + if (__have_atfcts >= 0) +# endif + { + result = INTERNAL_SYSCALL (newfstatat, err, 4, fd, file, &kst, flag); +# ifndef __ASSUME_ATFCTS + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1) + && INTERNAL_SYSCALL_ERRNO (result, err) == ENOSYS) + __have_atfcts = -1; + else +# endif + if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat64_conv (vers, &kst, st); + else + { + __set_errno (INTERNAL_SYSCALL_ERRNO (result, err)); + return -1; + } + } +#endif + +#ifndef __ASSUME_ATFCTS + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* 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; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, file, &kst); + else + result = INTERNAL_SYSCALL (stat, err, 2, file, &kst); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat64_conv (vers, &kst, st); + + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + return -1; +#endif +} +libc_hidden_def (__fxstatat64) |