X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Flabel.c;h=4a26ba9c5d1393a5a14d6981980473a6e2f5db9e;hb=9f5650aecb22a1d864b2c0b749910556795f1490;hp=d91257462521348f5d95a364f6bc4eeeeba05f4a;hpb=c66e7f04997fb42b778703418097a5023fa17581;p=elogind.git

diff --git a/src/shared/label.c b/src/shared/label.c
index d91257462..4a26ba9c5 100644
--- a/src/shared/label.c
+++ b/src/shared/label.c
@@ -20,39 +20,29 @@
 ***/
 
 #include <errno.h>
-#include <sys/stat.h>
 #include <unistd.h>
 #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(const char *prefixes[]) {
+int label_init(const char *prefix) {
         int r = 0;
 
 #ifdef HAVE_SELINUX
@@ -68,9 +58,9 @@ int label_init(const char *prefixes[]) {
         before_mallinfo = mallinfo();
         before_timestamp = now(CLOCK_MONOTONIC);
 
-        if (prefixes) {
+        if (prefix) {
                 struct selinux_opt options[] = {
-                        { .type = SELABEL_OPT_SUBSET, .values = prefixes },
+                        { .type = SELABEL_OPT_SUBSET, .value = prefix },
                 };
 
                 label_hnd = selabel_open(SELABEL_CTX_FILE, options, ELEMENTSOF(options));
@@ -91,7 +81,7 @@ int label_init(const char *prefixes[]) {
                 l = after_mallinfo.uordblks > before_mallinfo.uordblks ? after_mallinfo.uordblks - before_mallinfo.uordblks : 0;
 
                 log_debug("Successfully loaded SELinux database in %s, size on heap is %iK.",
-                          format_timespan(timespan, sizeof(timespan), after_timestamp - before_timestamp),
+                          format_timespan(timespan, sizeof(timespan), after_timestamp - before_timestamp, 0),
                           (l+1023)/1024);
         }
 #endif
@@ -99,7 +89,7 @@ int label_init(const char *prefixes[]) {
         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
@@ -132,6 +122,9 @@ int label_fix(const char *path, bool ignore_enoent) {
                 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;
@@ -196,7 +189,7 @@ int label_context_set(const char *path, mode_t mode) {
                 return 0;
 
         r = selabel_lookup_raw(label_hnd, &filecon, path, mode);
-        if (r < 0)
+        if (r < 0 && errno != ENOENT)
                 r = -errno;
         else if (r == 0) {
                 r = setfscreatecon(filecon);
@@ -263,14 +256,14 @@ void label_free(const char *label) {
 #endif
 }
 
-int label_mkdir(const char *path, mode_t mode, bool apply) {
+int label_mkdir(const char *path, mode_t mode) {
 
         /* Creates a directory and labels it according to the SELinux policy */
 #ifdef HAVE_SELINUX
         int r;
         security_context_t fcon = NULL;
 
-        if (!apply || !use_selinux() || !label_hnd)
+        if (!use_selinux() || !label_hnd)
                 goto skipped;
 
         if (path_is_absolute(path))
@@ -390,3 +383,15 @@ skipped:
 #endif
         return bind(fd, addr, addrlen) < 0 ? -errno : 0;
 }
+
+int label_apply(const char *path, const char *label) {
+        int r = 0;
+
+#ifdef HAVE_SELINUX
+        if (!use_selinux())
+                return 0;
+
+        r = setfilecon(path, (char *)label);
+#endif
+        return r;
+}