diff options
Diffstat (limited to 'lib/lchmod.c')
| -rw-r--r-- | lib/lchmod.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/lib/lchmod.c b/lib/lchmod.c index b4cc0a8176..f21bf7f652 100644 --- a/lib/lchmod.c +++ b/lib/lchmod.c @@ -45,7 +45,10 @@ int lchmod (char const *file, mode_t mode) { -#ifdef O_PATH +#if HAVE_READLINK + char readlink_buf[1]; + +# ifdef O_PATH /* Open a file descriptor with O_NOFOLLOW, to make sure we don't follow symbolic links, if /proc is mounted. O_PATH is used to avoid a failure if the file is not readable. @@ -55,8 +58,7 @@ lchmod (char const *file, mode_t mode) return fd; int err; - char buf[1]; - if (0 <= readlinkat (fd, "", buf, sizeof buf)) + if (0 <= readlinkat (fd, "", readlink_buf, sizeof readlink_buf)) err = EOPNOTSUPP; else if (errno == EINVAL) { @@ -73,16 +75,11 @@ lchmod (char const *file, mode_t mode) errno = err; if (0 <= err) return err == 0 ? 0 : -1; -#endif +# endif /* O_PATH + /proc is not supported. */ -#if HAVE_LSTAT - struct stat st; - int lstat_result = lstat (file, &st); - if (lstat_result != 0) - return lstat_result; - if (S_ISLNK (st.st_mode)) + if (0 <= readlink (file, readlink_buf, sizeof readlink_buf)) { errno = EOPNOTSUPP; return -1; |