int __real_chown (const char *file, uid_t owner, gid_t group) { #if __ASSUME_32BITUIDS > 0 return INLINE_SYSCALL (chown32, 3, CHECK_STRING (file), owner, group); #else static int __libc_old_chown; int result; if (!__libc_old_chown) { int saved_errno = errno; # ifdef __NR_chown32 if (__libc_missing_32bit_uids <= 0) { int result; int saved_errno = errno; result = INLINE_SYSCALL (chown32, 3, CHECK_STRING (file), owner, group); if (result == 0 || errno != ENOSYS) return result; __set_errno (saved_errno); __libc_missing_32bit_uids = 1; } # endif /* __NR_chown32 */ if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) { __set_errno (EINVAL); return -1; } result = INLINE_SYSCALL (chown, 3, CHECK_STRING (file), owner, group); if (result >= 0 || errno != ENOSYS) return result; __set_errno (saved_errno); __libc_old_chown = 1; } return __lchown (file, owner, group); #endif }
/* Compiling for compatibiity. */ int attribute_compat_text_section __chown_is_lchown (const char *file, uid_t owner, gid_t group) { return __lchown (file, owner, group); }
int lchown(const char *path, uid_t owner, gid_t group) { _gfs_hook_debug_v(fputs("Hooking lchown\n", stderr)); return (__lchown(path, owner, group)); }
int fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) { int result; #ifdef __NR_fchownat # ifndef __ASSUME_ATFCTS if (__have_atfcts >= 0) # endif { result = INLINE_SYSCALL (fchownat, 5, fd, file, owner, group, flag); # ifndef __ASSUME_ATFCTS if (result == -1 && errno == ENOSYS) __have_atfcts = -1; else # endif return result; } #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 __ASSUME_LCHOWN_SYSCALL INTERNAL_SYSCALL_DECL (err); if (flag & AT_SYMLINK_NOFOLLOW) result = INTERNAL_SYSCALL (lchown, err, 3, file, owner, group); else result = INTERNAL_SYSCALL (chown, err, 3, file, owner, group); if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) { __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); return -1; } # else /* Don't inline the rest to avoid unnecessary code duplication. */ if (flag & AT_SYMLINK_NOFOLLOW) result = __lchown (file, owner, group); else result = __chown (file, owner, group); if (result < 0) __atfct_seterrno (errno, fd, buf); # endif return result; #endif }
/* Compiling for compatibiity. */ int __chown_is_lchown (const char *file, uid_t owner, gid_t group) { return __lchown (file, owner, group); }