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; }