Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <malloc.h>
#include <sys/socket.h>
#include <sys/un.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
#include "label.h"
+#include "strv.h"
#include "util.h"
+#include "path-util.h"
#ifdef HAVE_SELINUX
+#include "selinux-util.h"
#include <selinux/selinux.h>
#include <selinux/label.h>
static struct selabel_handle *label_hnd = NULL;
-static int use_selinux_cached = -1;
-
-static inline bool use_selinux(void) {
-
- if (use_selinux_cached < 0)
- use_selinux_cached = is_selinux_enabled() > 0;
-
- return use_selinux_cached;
-}
-
-void label_retest_selinux(void) {
- use_selinux_cached = -1;
-}
-
#endif
-int label_init(void) {
+int label_init(const char *prefix) {
int r = 0;
#ifdef HAVE_SELINUX
before_mallinfo = mallinfo();
before_timestamp = now(CLOCK_MONOTONIC);
- label_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
+ if (prefix) {
+ struct selinux_opt options[] = {
+ { .type = SELABEL_OPT_SUBSET, .value = prefix },
+ };
+
+ label_hnd = selabel_open(SELABEL_CTX_FILE, options, ELEMENTSOF(options));
+ } else
+ 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");
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);
+ log_debug("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, bool ignore_enoent) {
+int label_fix(const char *path, bool ignore_enoent, bool ignore_erofs) {
int r = 0;
#ifdef HAVE_SELINUX
if (ignore_enoent && errno == ENOENT)
return 0;
+ if (ignore_erofs && errno == EROFS)
+ 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;
return r;
}
-int label_fifofile_set(const char *path) {
- int r = 0;
-
-#ifdef HAVE_SELINUX
- security_context_t filecon = NULL;
-
- if (!use_selinux() || !label_hnd)
- return 0;
-
- r = selabel_lookup_raw(label_hnd, &filecon, path, S_IFIFO);
- if (r < 0)
- r = -errno;
- else if (r == 0) {
- r = setfscreatecon(filecon);
- if (r < 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_symlinkfile_set(const char *path) {
+int label_context_set(const char *path, mode_t mode) {
int r = 0;
#ifdef HAVE_SELINUX
if (!use_selinux() || !label_hnd)
return 0;
- r = selabel_lookup_raw(label_hnd, &filecon, path, S_IFLNK);
- if (r < 0)
+ r = selabel_lookup_raw(label_hnd, &filecon, path, mode);
+ if (r < 0 && errno != ENOENT)
r = -errno;
else if (r == 0) {
r = setfscreatecon(filecon);
return 0;
}
-void label_file_clear(void) {
+void label_context_clear(void) {
#ifdef HAVE_SELINUX
if (!use_selinux())
#endif
}
-int label_mkdir(const char *path, mode_t mode) {
+int label_mkdir(const char *path, mode_t mode, bool apply) {
/* Creates a directory and labels it according to the SELinux policy */
-
#ifdef HAVE_SELINUX
int r;
security_context_t fcon = NULL;
- if (!use_selinux() || !label_hnd)
+ if (!apply || !use_selinux() || !label_hnd)
goto skipped;
if (path_is_absolute(path))