#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
+#include <malloc.h>
#include "label.h"
#include "util.h"
static struct selabel_handle *label_hnd = NULL;
+static int use_selinux_cached = -1;
+
static inline bool use_selinux(void) {
- static int use_selinux_ind = -1;
- if (use_selinux_ind < 0)
- use_selinux_ind = is_selinux_enabled() > 0;
+ if (use_selinux_cached < 0)
+ use_selinux_cached = is_selinux_enabled() > 0;
+
+ return use_selinux_cached;
+}
- return use_selinux_ind;
+void label_retest_selinux(void) {
+ use_selinux_cached = -1;
}
#endif
int r = 0;
#ifdef HAVE_SELINUX
+ usec_t before_timestamp, after_timestamp;
+ struct mallinfo before_mallinfo, after_mallinfo;
if (!use_selinux())
return 0;
+ if (label_hnd)
+ return 0;
+
+ before_mallinfo = mallinfo();
+ before_timestamp = now(CLOCK_MONOTONIC);
+
label_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
if (!label_hnd) {
log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG,
"Failed to initialize SELinux context: %m");
r = security_getenforce() == 1 ? -errno : 0;
+ } else {
+ char timespan[FORMAT_TIMESPAN_MAX];
+ int l;
+
+ after_timestamp = now(CLOCK_MONOTONIC);
+ after_mallinfo = mallinfo();
+
+ l = after_mallinfo.uordblks > before_mallinfo.uordblks ? after_mallinfo.uordblks - before_mallinfo.uordblks : 0;
+
+ log_info("Successfully loaded SELinux database in %s, size on heap is %iK.",
+ format_timespan(timespan, sizeof(timespan), after_timestamp - before_timestamp),
+ (l+1023)/1024);
}
#endif
return r;
}
-int label_fix(const char *path) {
+int label_fix(const char *path, bool ignore_enoent) {
int r = 0;
#ifdef HAVE_SELINUX
if (r == 0) {
r = selabel_lookup_raw(label_hnd, &fcon, path, st.st_mode);
+ /* If there's no label to set, then exit without warning */
+ if (r < 0 && errno == ENOENT)
+ return 0;
+
if (r == 0) {
r = setfilecon(path, fcon);
freecon(fcon);
+
+ /* If the FS doesn't support labels, then exit without warning */
+ if (r < 0 && errno == ENOTSUP)
+ return 0;
}
}
+
if (r < 0) {
+ /* Ignore ENOENT in some cases */
+ if (ignore_enoent && errno == ENOENT)
+ return 0;
+
log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG,
"Unable to fix label of %s: %m", path);
r = security_getenforce() == 1 ? -errno : 0;
#endif
}
-int label_get_socket_label_from_exe(const char *exe, char **label) {
+int label_get_create_label_from_exe(const char *exe, char **label) {
int r = 0;
return r;
}
+int label_symlinkfile_set(const char *path) {
+ int r = 0;
+
+#ifdef HAVE_SELINUX
+ security_context_t filecon = NULL;
+
+ if (!use_selinux() || !label_hnd)
+ return 0;
+
+ if ((r = selabel_lookup_raw(label_hnd, &filecon, path, S_IFLNK)) == 0) {
+ if ((r = setfscreatecon(filecon)) < 0) {
+ log_error("Failed to set SELinux file context on %s: %m", path);
+ r = -errno;
+ }
+
+ freecon(filecon);
+ }
+
+ if (r < 0 && security_getenforce() == 0)
+ r = 0;
+#endif
+
+ return r;
+}
+
int label_socket_set(const char *label) {
#ifdef HAVE_SELINUX
if (use_selinux() && label_hnd) {
- if (path[0] == '/')
+ if (path_is_absolute(path))
r = selabel_lookup_raw(label_hnd, &fcon, path, mode);
else {
- char *cwd = NULL, *newpath = NULL;
-
- cwd = get_current_dir_name();
+ char *newpath = NULL;
- if (cwd || asprintf(&newpath, "%s/%s", cwd, path) < 0) {
- free(cwd);
- return -errno;
- }
+ if (!(newpath = path_make_absolute_cwd(path)))
+ return -ENOMEM;
r = selabel_lookup_raw(label_hnd, &fcon, newpath, mode);
- free(cwd);
free(newpath);
}