/* 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 }