frontend: Ensure that the base directory of a UNIX socket exists.

diff --git a/src/frontend/sock.c b/src/frontend/sock.c
index 2e5a6aff66d6484831907c1bcc31fb0b7dd698cb..845274e95606bde06129e4d676657dd9f6db8342 100644 (file)
--- a/src/frontend/sock.c
+++ b/src/frontend/sock.c
@@ -37,6 +37,7 @@
 #include "utils/channel.h"
 #include "utils/error.h"
 #include "utils/llist.h"
+#include "utils/os.h"
 #include "utils/strbuf.h"
 
 #include <assert.h>
@@ -54,6 +55,8 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 
+#include <libgen.h>
+
 #include <pthread.h>
 
 /*
@@ -94,6 +97,7 @@ static int
 open_unix_sock(listener_t *listener)
 {
        const char *addr;
+       char *base_dir;
        struct sockaddr_un sa;
        int status;
 
@@ -114,6 +118,25 @@ open_unix_sock(listener_t *listener)
        sa.sun_family = AF_UNIX;
        strncpy(sa.sun_path, addr, sizeof(sa.sun_path));
 
+       base_dir = strdup(addr);
+       if (! base_dir) {
+               char errbuf[1024];
+               sdb_log(SDB_LOG_ERR, "frontend: strdup failed: %s",
+                               sdb_strerror(errno, errbuf, sizeof(errbuf)));
+               return -1;
+       }
+       base_dir = dirname(base_dir);
+
+       /* ensure that the directory exists */
+       if (sdb_mkdir_all(base_dir, 0777)) {
+               char errbuf[1024];
+               sdb_log(SDB_LOG_ERR, "frontend: Failed to create directory '%s': %s",
+                               base_dir, sdb_strerror(errno, errbuf, sizeof(errbuf)));
+               free(base_dir);
+               return -1;
+       }
+       free(base_dir);
+
        if (unlink(addr) && (errno != ENOENT)) {
                char errbuf[1024];
                sdb_log(SDB_LOG_WARNING, "frontend: Failed to remove stale UNIX "