--- /dev/null
+/* 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 <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <kernel_stat.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+#include <bp-checks.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, CHECK_STRING (file),
+ __ptrvalue (&kst));
+ else
+ result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file),
+ __ptrvalue (&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)
#include <sys/stat.h>
#include <kernel_stat.h>
-#ifdef STAT_IS_KERNEL_STAT
-
-/* Dummy. */
-struct kernel_stat;
-
-#else
-
#include <string.h>
-
int
__xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
{
/* Convert to current kernel version of `struct stat'. */
buf->st_dev = kbuf->st_dev;
- buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
+ memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
buf->st_ino = kbuf->st_ino;
+ /* Check for overflow. */
+ if (buf->st_ino != kbuf->st_ino)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
buf->st_mode = kbuf->st_mode;
buf->st_nlink = kbuf->st_nlink;
buf->st_uid = kbuf->st_uid;
buf->st_gid = kbuf->st_gid;
buf->st_rdev = kbuf->st_rdev;
- buf->st_pad2[0] = 0; buf->st_pad2[1] = 0;
- buf->st_pad3 = 0;
+ memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
buf->st_size = kbuf->st_size;
- buf->st_blksize = kbuf->st_blksize;
- buf->st_blocks = kbuf->st_blocks;
-
+ /* Check for overflow. */
+ if (buf->st_size != kbuf->st_size)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+ buf->st_pad3 = 0;
buf->st_atim.tv_sec = kbuf->st_atime_sec;
buf->st_atim.tv_nsec = kbuf->st_atime_nsec;
buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec;
buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
-
- buf->st_pad5[0] = 0; buf->st_pad5[1] = 0;
- buf->st_pad5[2] = 0; buf->st_pad5[3] = 0;
- buf->st_pad5[4] = 0; buf->st_pad5[5] = 0;
- buf->st_pad5[6] = 0; buf->st_pad5[7] = 0;
+ buf->st_blksize = kbuf->st_blksize;
+ buf->st_blocks = kbuf->st_blocks;
+ /* Check for overflow. */
+ if (buf->st_blocks != kbuf->st_blocks)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+ memset (&buf->st_pad5, 0, sizeof (buf->st_pad5));
}
break;
struct stat64 *buf = ubuf;
buf->st_dev = kbuf->st_dev;
- buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
+ memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
buf->st_ino = kbuf->st_ino;
buf->st_mode = kbuf->st_mode;
buf->st_nlink = kbuf->st_nlink;
buf->st_uid = kbuf->st_uid;
buf->st_gid = kbuf->st_gid;
buf->st_rdev = kbuf->st_rdev;
- buf->st_pad2[0] = 0; buf->st_pad2[1] = 0; buf->st_pad2[2] = 0;
+ memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
buf->st_pad3 = 0;
buf->st_size = kbuf->st_size;
buf->st_blksize = kbuf->st_blksize;
buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
- buf->st_pad4[0] = 0; buf->st_pad4[1] = 0;
- buf->st_pad4[2] = 0; buf->st_pad4[3] = 0;
- buf->st_pad4[4] = 0; buf->st_pad4[5] = 0;
- buf->st_pad4[6] = 0; buf->st_pad4[7] = 0;
+ memset (&buf->st_pad4, 0, sizeof (buf->st_pad4));
}
break;
#endif
}
-#endif /* ! STAT_IS_KERNEL_STAT */
+#if _MIPS_SIM == _ABIO32
+int
+__xstat32_conv (int vers, struct stat64 *kbuf, struct stat *buf)
+{
+ switch (vers)
+ {
+ case _STAT_VER_LINUX:
+ /* Convert current kernel version of `struct stat64' to
+ `struct stat'. The layout of the fields in the kernel's
+ stat64 is the same as that in the user stat64; the only
+ difference is that the latter has more trailing padding. */
+ buf->st_dev = kbuf->st_dev;
+ memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
+ buf->st_ino = kbuf->st_ino;
+ /* Check for overflow. */
+ if (buf->st_ino != kbuf->st_ino)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+ buf->st_mode = kbuf->st_mode;
+ buf->st_nlink = kbuf->st_nlink;
+ buf->st_uid = kbuf->st_uid;
+ buf->st_gid = kbuf->st_gid;
+ buf->st_rdev = kbuf->st_rdev;
+ memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
+ buf->st_size = kbuf->st_size;
+ /* Check for overflow. */
+ if (buf->st_size != kbuf->st_size)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+ buf->st_pad3 = 0;
+ buf->st_atim.tv_sec = kbuf->st_atim.tv_sec;
+ buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec;
+ buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec;
+ buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec;
+ buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec;
+ buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec;
+ buf->st_blksize = kbuf->st_blksize;
+ buf->st_blocks = kbuf->st_blocks;
+ /* Check for overflow. */
+ if (buf->st_blocks != kbuf->st_blocks)
+ {
+ __set_errno (EOVERFLOW);
+ return -1;
+ }
+ memset (&buf->st_pad5, 0, sizeof (buf->st_pad5));
+ break;
+
+ /* If struct stat64 is different from struct stat then
+ _STAT_VER_KERNEL does not make sense. */
+ case _STAT_VER_KERNEL:
+ default:
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ return 0;
+}
+#endif /* _MIPS_SIM == _ABIO32 */
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