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Diffstat (limited to 'src/shared/label.c')
-rw-r--r--src/shared/label.c60
1 files changed, 57 insertions, 3 deletions
diff --git a/src/shared/label.c b/src/shared/label.c
index 92f10f9f90..3632e3ebf9 100644
--- a/src/shared/label.c
+++ b/src/shared/label.c
@@ -41,6 +41,48 @@
static struct selabel_handle *label_hnd = NULL;
#endif
+#ifdef HAVE_SMACK
+#include <sys/xattr.h>
+#include <string.h>
+#define FLOOR_LABEL "_"
+#define STAR_LABEL "*"
+
+static void smack_relabel_in_dev(const char *path) {
+ struct stat sb;
+ const char *label;
+ int r;
+
+ /*
+ * Path must be in /dev and must exist
+ */
+ if (!path_equal(path, "/dev") &&
+ !path_startswith(path, "/dev"))
+ return;
+
+ r = lstat(path, &sb);
+ if (r < 0)
+ return;
+
+ /*
+ * Label directories and character devices "*".
+ * Label symlinks "_".
+ * Don't change anything else.
+ */
+ if (S_ISDIR(sb.st_mode))
+ label = STAR_LABEL;
+ else if (S_ISLNK(sb.st_mode))
+ label = FLOOR_LABEL;
+ else if (S_ISCHR(sb.st_mode))
+ label = STAR_LABEL;
+ else
+ return;
+
+ r = setxattr(path, "security.SMACK64", label, strlen(label), 0);
+ if (r < 0)
+ log_error("Smack relabeling \"%s\" %s", path, strerror(errno));
+ return;
+}
+#endif
int label_init(const char *prefix) {
int r = 0;
@@ -130,6 +172,9 @@ int label_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
r = security_getenforce() == 1 ? -errno : 0;
}
#endif
+#ifdef HAVE_SMACK
+ smack_relabel_in_dev(path);
+#endif
return r;
}
@@ -207,6 +252,9 @@ int label_context_set(const char *path, mode_t mode) {
if (r < 0 && security_getenforce() == 0)
r = 0;
#endif
+#ifdef HAVE_SMACK
+ smack_relabel_in_dev(path);
+#endif
return r;
}
@@ -260,11 +308,11 @@ void label_free(const char *label) {
}
int label_mkdir(const char *path, mode_t mode) {
+ int r;
- /* Creates a directory and labels it according to the SELinux policy */
#ifdef HAVE_SELINUX
+ /* Creates a directory and labels it according to the SELinux policy */
security_context_t fcon = NULL;
- int r;
if (!use_selinux() || !label_hnd)
goto skipped;
@@ -305,7 +353,13 @@ finish:
skipped:
#endif
- return mkdir(path, mode) < 0 ? -errno : 0;
+ r = mkdir(path, mode);
+ if (r)
+ return -errno;
+#ifdef HAVE_SMACK
+ smack_relabel_in_dev(path);
+#endif
+ return 0;
}
int label_bind(int fd, const struct sockaddr *addr, socklen_t addrlen) {