int stat(const char *file_name, struct stat *buf)
{
struct kernel_stat kbuf;
char abspath[PATH_MAX], *dpath;
long ret;
int sysid;
void *rbuf, *off;
size_t sz;
dpath = sclib_get_path(abspath, file_name, &sysid, &sz);
if (sysid != SYSCALL_SYSID_LOCAL) {
rbuf = sclib_memory_alloc(&sclib_data[sysid], sizeof(struct kernel_stat) + sz);
SCLIB_MEM_RET(rbuf, ret);
memcpy(rbuf + sizeof(struct kernel_stat), dpath, sz);
off = sclib_mem(sysid, rbuf);
ret = SCLIB_REMOTE_CALL(sysid, stat, 2, off + sizeof(struct kernel_stat), off);
if (ret == 0)
__xstat_conv(rbuf, buf);
sclib_memory_free(&sclib_data[sysid], rbuf);
} else {
ret = SCLIB_LOCAL_CALL(stat, 2, dpath, &kbuf);
if (ret == 0)
__xstat_conv(&kbuf, buf);
}
error_mem:
SCLIB_ERR_RET(ret);
return ret;
}
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 stat(const char *file_name, struct stat *buf)
{
int result;
struct kernel_stat kbuf;
result = __syscall_stat(file_name, &kbuf);
if (result == 0) {
__xstat_conv(&kbuf, buf);
}
return result;
}
int fstat(int fd, struct stat *buf)
{
int result;
struct kernel_stat kbuf;
result = __syscall_fstat(fd, &kbuf);
if (result == 0) {
__xstat_conv(&kbuf, buf);
}
return result;
}
/* 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 */
}
/* Get information about the file NAME in BUF. */
int
__xstat (int vers, const char *name, struct stat *buf)
{
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (stat, 2, name, buf);
#ifdef STAT_IS_KERNEL_STAT
return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
#else
struct kernel_stat kbuf;
int result;
result = INLINE_SYSCALL (stat, 2, name, &kbuf);
if (result == 0)
result = __xstat_conv (vers, &kbuf, buf);
return result;
#endif
}
/* Get information about the file NAME in BUF. */
int
__xstat (int vers, const char *name, struct stat *buf)
{
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (stat, 2, CHECK_STRING (name),
CHECK_1 ((struct kernel_stat *) buf));
#ifdef STAT_IS_KERNEL_STAT
errno = EINVAL;
return -1;
#else
struct kernel_stat kbuf;
int result;
result = INLINE_SYSCALL (stat, 2, CHECK_STRING (name),
__ptrvalue (&kbuf));
if (result == 0)
result = __xstat_conv (vers, &kbuf, buf);
return result;
#endif
}
/* Get information about the file NAME in BUF. */
int
__xstat (int vers, const char *name, struct stat *buf)
{
INTERNAL_SYSCALL_DECL (err);
int result;
struct kernel_stat kbuf;
if (vers == _STAT_VER_KERNEL64)
{
result = INTERNAL_SYSCALL (stat64, err, 2, name, buf);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
result = INTERNAL_SYSCALL (stat, err, 2, name, &kbuf);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return __xstat_conv (vers, &kbuf, buf);
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
/* Get information about the file NAME in BUF. */
int
__xstat (int vers, const char *name, struct stat *buf)
{
INTERNAL_SYSCALL_DECL (err);
int result;
struct kernel_stat kbuf;
#if __ASSUME_STAT64_SYSCALL > 0
if (vers == _STAT_VER_KERNEL64)
{
result = INTERNAL_SYSCALL (stat64, err, 2, name, buf);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
#elif defined __NR_stat64
if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64)
{
int errno_out;
result = INTERNAL_SYSCALL (stat64, err, 2, name, buf);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
if (errno_out != ENOSYS)
{
__set_errno (errno_out);
return -1;
}
__libc_missing_axp_stat64 = 1;
}
#endif
result = INTERNAL_SYSCALL (stat, err, 2, name, &kbuf);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return __xstat_conv (vers, &kbuf, buf);
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
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 in BUF. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
int result;
INTERNAL_SYSCALL_DECL (err);
#ifdef STAT_IS_KERNEL_STAT
# define kst (*st)
#else
struct kernel_stat kst;
#endif
result = INTERNAL_SYSCALL (newfstatat, err, 4, fd, file, &kst, flag);
if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
{
#ifdef STAT_IS_KERNEL_STAT
return 0;
#else
return __xstat_conv (vers, &kst, st);
#endif
}
else
return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
err));
}
/* Get information about the file NAME in BUF. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
int result;
INTERNAL_SYSCALL_DECL (err);
#ifdef STAT_IS_KERNEL_STAT
# define kst (*st)
#else
struct kernel_stat kst;
#endif
#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))
{
#ifdef STAT_IS_KERNEL_STAT
return 0;
#else
return __xstat_conv (vers, &kst, st);
#endif
}
else
{
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
}
#endif
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
if (__builtin_expect (filelen == 0, 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);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
}
#ifdef STAT_IS_KERNEL_STAT
else
{
__set_errno (EINVAL);
return -1;
}
#else
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 __xstat_conv (vers, &kst, st);
#endif
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
return -1;
}
int
__xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
{
#ifdef XSTAT_IS_XSTAT64
return __xstat_conv (vers, kbuf, ubuf);
#else
switch (vers)
{
case _STAT_VER_LINUX:
{
struct stat64 *buf = ubuf;
/* Convert to current kernel version of `struct stat64'. */
buf->st_dev = kbuf->st_dev;
#ifdef _HAVE_STAT64___PAD1
buf->__pad1 = 0;
#endif
buf->st_ino = kbuf->st_ino;
#ifdef _HAVE_STAT64___ST_INO
buf->__st_ino = kbuf->st_ino;
#endif
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;
#ifdef _HAVE_STAT64___PAD2
buf->__pad2 = 0;
#endif
buf->st_size = kbuf->st_size;
buf->st_blksize = kbuf->st_blksize;
buf->st_blocks = kbuf->st_blocks;
#ifdef _HAVE_STAT64_NSEC
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;
#else
buf->st_atime = kbuf->st_atime;
buf->st_mtime = kbuf->st_mtime;
buf->st_ctime = kbuf->st_ctime;
#endif
#ifdef _HAVE_STAT64___UNUSED1
buf->__glibc_reserved1 = 0;
#endif
#ifdef _HAVE_STAT64___UNUSED2
buf->__glibc_reserved2 = 0;
#endif
#ifdef _HAVE_STAT64___UNUSED3
buf->__glibc_reserved3 = 0;
#endif
#ifdef _HAVE_STAT64___UNUSED4
buf->__glibc_reserved4 = 0;
#endif
#ifdef _HAVE_STAT64___UNUSED5
buf->__glibc_reserved5 = 0;
#endif
}
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
}
/* 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 in BUF. */
int
__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag)
{
INTERNAL_SYSCALL_DECL (err);
int result, errno_out;
/* ??? The __fxstatat entry point is new enough that it must be using
vers == _STAT_VER_KERNEL64. For the benefit of dl-fxstatat64.c, we
cannot actually check this, lest the compiler not optimize the rest
of the function away. */
#ifdef __NR_fstatat64
if (__have_atfcts >= 0)
{
result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, st, flag);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
#ifndef __ASSUME_ATFCTS
if (errno_out == ENOSYS)
__have_atfcts = -1;
else
#endif
{
__set_errno (errno_out);
return -1;
}
}
#endif /* __NR_fstatat64 */
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
if (__builtin_expect (filelen == 0, 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;
}
#ifdef __NR_stat64
if (!__libc_missing_axp_stat64)
{
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat64, err, 2, file, st);
else
result = INTERNAL_SYSCALL (stat64, err, 2, file, st);
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return result;
errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
# if __ASSUME_STAT64_SYSCALL == 0
if (errno_out == ENOSYS)
__libc_missing_axp_stat64 = 1;
else
# endif
goto fail;
}
#endif /* __NR_stat64 */
struct kernel_stat kst;
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 __xstat_conv (vers, &kst, st);
errno_out = INTERNAL_SYSCALL_ERRNO (result, err);
fail:
__atfct_seterrno (errno_out, fd, buf);
return -1;
}
