/* Get information about the file FD in BUF. */
int
__fxstat (int vers, int fd, struct stat *buf)
{
#if __ASSUME_STAT64_SYSCALL == 0
struct kernel_stat kbuf;
#endif
int result;
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstat, 2, fd, CHECK_1 ((struct kernel_stat *) buf));
#if __ASSUME_STAT64_SYSCALL > 0
{
struct stat64 buf64;
result = INLINE_SYSCALL (fstat64, 2, fd, __ptrvalue (&buf64));
if (result == 0)
result = __xstat32_conv (vers, &buf64, buf);
return result;
}
#else
# if defined __NR_stat64
/* To support 32 bit UIDs, we have to use stat64. The normal stat call only returns
16 bit UIDs. */
if (! __have_no_stat64)
{
struct stat64 buf64;
result = INLINE_SYSCALL (fstat64, 2, fd, __ptrvalue (&buf64));
if (result == 0)
result = __xstat32_conv (vers, &buf64, buf);
if (result != -1 || errno != ENOSYS)
return result;
__have_no_stat64 = 1;
}
# endif
result = INLINE_SYSCALL (fstat, 2, fd, __ptrvalue (&kbuf));
if (result == 0)
result = __xstat_conv (vers, &kbuf, buf);
return result;
#endif /* __ASSUME_STAT64_SYSCALL */
}
int lstat(const char *file_name, struct stat *buf)
{
int result;
#if defined __NR_lstat64 || defined __NR_fstatat64
/* normal stat call has limited values for various stat elements
* e.g. uid device major/minor etc.
* so we use 64 variant if available
* in order to get newer versions of stat elements
*/
struct kernel_stat64 kbuf;
# ifdef __NR_lstat64
result = INLINE_SYSCALL(lstat64, 2, file_name, &kbuf);
# else
result = INLINE_SYSCALL(fstatat64, 4, AT_FDCWD, file_name, &kbuf, AT_SYMLINK_NOFOLLOW);
# endif
if (result == 0) {
__xstat32_conv(&kbuf, buf);
}
#else
struct kernel_stat kbuf;
result = INLINE_SYSCALL(lstat, 2, file_name, &kbuf);
if (result == 0) {
__xstat_conv(&kbuf, buf);
}
#endif
return result;
}
int fstatat(int fd, const char *file, struct stat *buf, int flag)
{
int ret;
struct kernel_stat64 kbuf;
ret = INLINE_SYSCALL(fstatat64, 4, fd, file, &kbuf, flag);
if (ret == 0)
__xstat32_conv(&kbuf, buf);
return ret;
}
int fstatat(int fd, const char *file, struct stat *buf, int flag)
{
int ret;
# ifdef __ARCH_HAS_DEPRECATED_SYSCALLS__
struct kernel_stat64 kbuf;
ret = INLINE_SYSCALL(fstatat64, 4, fd, file, &kbuf, flag);
if (ret == 0)
__xstat32_conv(&kbuf, buf);
# else
ret = INLINE_SYSCALL(fstatat64, 4, fd, file, buf, flag);
# endif /* __ARCH_HAS_DEPRECATED_SYSCALLS__ */
return ret;
}
/* Get information about the file NAME relative to FD in ST. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
int result;
INTERNAL_SYSCALL_DECL (err);
struct stat64 st64;
result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, &st64, flag);
if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
return INLINE_SYSCALL_ERROR_RETURN_VALUE (-result);
else
return __xstat32_conv (vers, &st64, st);
}
/* Get information about the file FD in BUF. */
int
__fxstat (int vers, int fd, struct stat *buf)
{
int result;
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstat, 2, fd, (struct kernel_stat *) buf);
{
struct stat64 buf64;
result = INLINE_SYSCALL (fstat64, 2, fd, &buf64);
if (result == 0)
result = __xstat32_conv (vers, &buf64, buf);
return result;
}
}
/* Get information about the file NAME in BUF. */
int
__lxstat (int vers, const char *name, struct stat *buf)
{
int result;
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (lstat, 2, name, (struct kernel_stat *) buf);
{
struct stat64 buf64;
INTERNAL_SYSCALL_DECL (err);
result = INTERNAL_SYSCALL (lstat64, err, 2, name, &buf64);
if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
return INLINE_SYSCALL_ERROR_RETURN_VALUE (-result);
else
return __xstat32_conv (vers, &buf64, buf);
}
}
/* Get information about the file FD in BUF. */
int
__fxstat (int vers, int fd, struct stat *buf)
{
int result;
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstat, 2, fd, buf);
{
struct stat64 buf64;
INTERNAL_SYSCALL_DECL (err);
result = INTERNAL_SYSCALL (fstat64, err, 2, fd, &buf64);
if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
err));
else
return __xstat32_conv (vers, &buf64, buf);
}
}
int stat(const char *file_name, struct stat *buf)
{
int result;
# ifdef __NR_stat64
/* normal stat call has limited values for various stat elements
* e.g. uid device major/minor etc.
* so we use 64 variant if available
* in order to get newer versions of stat elements
*/
struct kernel_stat64 kbuf;
result = INLINE_SYSCALL(stat64, 2, file_name, &kbuf);
if (result == 0) {
__xstat32_conv(&kbuf, buf);
}
# else
struct kernel_stat kbuf;
result = INLINE_SYSCALL(stat, 2, file_name, &kbuf);
if (result == 0) {
__xstat_conv(&kbuf, buf);
}
# endif /* __NR_stat64 */
return result;
}
/* Get information about the file NAME relative to FD in ST. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
int result;
INTERNAL_SYSCALL_DECL (err);
struct stat64 st64;
#ifdef __NR_fstatat64
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, &st64, 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 __xstat32_conv (vers, &st64, st);
else
{
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
}
#endif
#ifndef __ASSUME_ATFCTS
if (__builtin_expect (flag & ~AT_SYMLINK_NOFOLLOW, 0))
{
__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 __ASSUME_STAT64_SYSCALL == 0
struct kernel_stat kst;
# endif
if (vers == _STAT_VER_KERNEL)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file),
CHECK_1 ((struct kernel_stat *) st));
else
result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file),
CHECK_1 ((struct kernel_stat *) st));
goto out;
}
# if __ASSUME_STAT64_SYSCALL > 0
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file),
__ptrvalue (&st64));
else
result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file),
__ptrvalue (&st64));
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return __xstat32_conv (vers, &st64, st);
# else
# if defined __NR_stat64
/* To support 32 bit UIDs, we have to use stat64. The normal stat
call only returns 16 bit UIDs. */
if (! __have_no_stat64)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file),
__ptrvalue (&st64));
else
result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file),
__ptrvalue (&st64));
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
result = __xstat32_conv (vers, &st64, st);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)
|| INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
goto out;
__have_no_stat64 = 1;
}
# endif
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 __xstat_conv (vers, &kst, st);
# endif /* __ASSUME_STAT64_SYSCALL */
out:
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0))
{
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
result = -1;
}
return result;
#endif
}
/* Get information about the file NAME relative to FD in ST. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
int result;
INTERNAL_SYSCALL_DECL (err);
struct stat64 st64;
#ifdef __NR_fstatat64
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, &st64, 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 __xstat32_conv (vers, &st64, st);
else
{
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
}
#endif
#ifndef __ASSUME_ATFCTS
if (__glibc_unlikely (flag & ~AT_SYMLINK_NOFOLLOW))
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
if (__glibc_unlikely (filelen == 0))
{
__set_errno (ENOENT);
return -1;
}
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 (vers == _STAT_VER_KERNEL)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat, err, 2, file,
(struct kernel_stat *) st);
else
result = INTERNAL_SYSCALL (stat, err, 2, file,
(struct kernel_stat *) st);
goto out;
}
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat64, err, 2, file, &st64);
else
result = INTERNAL_SYSCALL (stat64, err, 2, file, &st64);
if (__glibc_likely (!INTERNAL_SYSCALL_ERROR_P (result, err)))
return __xstat32_conv (vers, &st64, st);
out:
if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
{
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
result = -1;
}
return result;
#endif
}
