libudev: initialize selinux only when needed

[elogind.git] / udev / lib / libudev.c

diff --git a/udev/lib/libudev.c b/udev/lib/libudev.c
index 2d34925912b1e7f9cb33337a8e2e30bee6bbaa71..4fd8196bd93eb2c9e7e4faf2bbf73e276bea699a 100644 (file)
--- a/udev/lib/libudev.c
+++ b/udev/lib/libudev.c
@@ -37,11 +37,13 @@ struct udev {
        void (*log_fn)(struct udev *udev,
                       int priority, const char *file, int line, const char *fn,
                       const char *format, va_list args);
+       void *userdata;
        char *sys_path;
        char *dev_path;
        char *rules_path;
        int log_priority;
 #ifdef USE_SELINUX
+       int selinux_initialized;
        int selinux_enabled;
        security_context_t selinux_prev_scontext;
 #endif
@@ -86,12 +88,29 @@ static void selinux_init(struct udev *udev)
                        udev->selinux_prev_scontext = NULL;
                }
        }
+       udev->selinux_initialized = 1;
 #endif
 }
 
+void *udev_get_userdata(struct udev *udev)
+{
+       if (udev == NULL)
+               return NULL;
+       return udev->userdata;
+}
+
+void udev_set_userdata(struct udev *udev, void *userdata)
+{
+       if (udev == NULL)
+               return;
+       udev->userdata = userdata;
+}
+
 static void selinux_exit(struct udev *udev)
 {
 #ifdef USE_SELINUX
+       if (!udev->selinux_initialized)
+               return;
        if (udev->selinux_enabled) {
                freecon(udev->selinux_prev_scontext);
                udev->selinux_prev_scontext = NULL;
@@ -102,6 +121,8 @@ static void selinux_exit(struct udev *udev)
 void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode)
 {
 #ifdef USE_SELINUX
+       if (!udev->selinux_initialized)
+               selinux_init(udev);
        if (udev->selinux_enabled) {
                security_context_t scontext = NULL;
 
@@ -119,6 +140,8 @@ void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int
 void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode)
 {
 #ifdef USE_SELINUX
+       if (!udev->selinux_initialized)
+               selinux_init(udev);
        if (udev->selinux_enabled) {
                security_context_t scontext = NULL;
 
@@ -136,6 +159,8 @@ void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned i
 void udev_selinux_resetfscreatecon(struct udev *udev)
 {
 #ifdef USE_SELINUX
+       if (!udev->selinux_initialized)
+               selinux_init(udev);
        if (udev->selinux_enabled) {
                if (setfscreatecon(udev->selinux_prev_scontext) < 0)
                        err(udev, "setfscreatecon failed: %s\n", strerror(errno));
@@ -292,7 +317,6 @@ struct udev *udev_new(void)
 
        if (udev->dev_path == NULL || udev->sys_path == NULL)
                goto err;
-       selinux_init(udev);
        info(udev, "context %p created\n", udev);
        info(udev, "log_priority=%d\n", udev->log_priority);
        info(udev, "config_file='%s'\n", config_file);