core: make sure PrivateDevices= makes /dev/log available

Now that we moved the actual syslog socket to
/run/systemd/journal/dev-log we can actually make /dev/log a symlink to
it, when PrivateDevices= is used, thus making syslog available to
services using PrivateDevices=.

2 files changed, 6 insertions, 2 deletions

diff --git a/src/core/namespace.c b/src/core/namespace.c
index de09e9f2c3..16540043ab 100644
--- a/src/core/namespace.c
+++ b/src/core/namespace.c
@@ -143,7 +143,7 @@ static int mount_dev(BindMount *m) {
                 "/dev/tty\0";
 
         char temporary_mount[] = "/tmp/namespace-dev-XXXXXX";
-        const char *d, *dev = NULL, *devpts = NULL, *devshm = NULL, *devkdbus = NULL, *devhugepages = NULL, *devmqueue = NULL;
+        const char *d, *dev = NULL, *devpts = NULL, *devshm = NULL, *devkdbus = NULL, *devhugepages = NULL, *devmqueue = NULL, *devlog = NULL;
         _cleanup_umask_ mode_t u;
         int r;
 
@@ -188,6 +188,9 @@ static int mount_dev(BindMount *m) {
         mkdir(devhugepages, 0755);
         mount("/dev/hugepages", devhugepages, NULL, MS_BIND, NULL);
 
+        devlog = strappenda(temporary_mount, "/dev/log");
+        symlink("/run/systemd/journal/dev-log", devlog);
+
         NULSTR_FOREACH(d, devnodes) {
                 _cleanup_free_ char *dn = NULL;
                 struct stat st;
diff --git a/src/initctl/initctl.c b/src/initctl/initctl.c
index f9a6ed44ed..f3f6f73040 100644
--- a/src/initctl/initctl.c
+++ b/src/initctl/initctl.c
@@ -383,7 +383,8 @@ int main(int argc, char *argv[]) {
 
         umask(0022);
 
-        if ((n = sd_listen_fds(true)) < 0) {
+        n = sd_listen_fds(true);
+        if (n < 0) {
                 log_error("Failed to read listening file descriptors from environment: %s", strerror(-r));
                 return EXIT_FAILURE;
         }