diff options
Diffstat (limited to 'src/libudev/path-util.c')
| -rw-r--r-- | src/libudev/path-util.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/src/libudev/path-util.c b/src/libudev/path-util.c index 67863a8757..3512002cfa 100644 --- a/src/libudev/path-util.c +++ b/src/libudev/path-util.c @@ -253,11 +253,15 @@ bool path_equal(const char *a, const char *b) { } int path_is_mount_point(const char *t, bool allow_symlink) { - char *parent; - int r; - struct file_handle *h; + + union file_handle_union h = { + .handle.handle_bytes = MAX_HANDLE_SZ + }; + int mount_id, mount_id_parent; + char *parent; struct stat a, b; + int r; /* We are not actually interested in the file handles, but * name_to_handle_at() also passes us the mount ID, hence use @@ -266,12 +270,9 @@ int path_is_mount_point(const char *t, bool allow_symlink) { if (path_equal(t, "/")) return 1; - h = alloca(MAX_HANDLE_SZ); - h->handle_bytes = MAX_HANDLE_SZ; - - r = name_to_handle_at(AT_FDCWD, t, h, &mount_id, allow_symlink ? AT_SYMLINK_FOLLOW : 0); + r = name_to_handle_at(AT_FDCWD, t, &h.handle, &mount_id, allow_symlink ? AT_SYMLINK_FOLLOW : 0); if (r < 0) { - if (errno == ENOSYS || errno == ENOTSUP) + if (IN_SET(errno, ENOSYS, EOPNOTSUPP)) /* This kernel or file system does not support * name_to_handle_at(), hence fallback to the * traditional stat() logic */ @@ -287,15 +288,14 @@ int path_is_mount_point(const char *t, bool allow_symlink) { if (r < 0) return r; - h->handle_bytes = MAX_HANDLE_SZ; - r = name_to_handle_at(AT_FDCWD, parent, h, &mount_id_parent, 0); + h.handle.handle_bytes = MAX_HANDLE_SZ; + r = name_to_handle_at(AT_FDCWD, parent, &h.handle, &mount_id_parent, 0); free(parent); - if (r < 0) { /* The parent can't do name_to_handle_at() but the * directory we are interested in can? If so, it must * be a mount point */ - if (errno == ENOTSUP) + if (errno == EOPNOTSUPP) return 1; return -errno; @@ -322,7 +322,6 @@ fallback: r = lstat(parent, &b); free(parent); - if (r < 0) return -errno; |