server/: Issue `WARN' messages for (most) initialization errors.

[tripe] / server / admin.c

diff --git a/server/admin.c b/server/admin.c
index 6ff0dbf3e38f78a12a3226ced3dda4f18a0e963e..5146fde4b72f495f6c47bf29db6dccee0be6782f 100644 (file)
--- a/server/admin.c
+++ b/server/admin.c
@@ -2514,8 +2514,10 @@ void a_listen(const char *name, uid_t u, gid_t g, mode_t m)
   /* --- Set up the socket address --- */
 
   sz = strlen(name) + 1;
-  if (sz > sizeof(sun.sun_path))
-    die(EXIT_FAILURE, "socket name `%s' too long", name);
+  if (sz > sizeof(sun.sun_path)) {
+    a_warn("ADMIN", "admin-socket", "%s", name, "name-too-long", A_END);
+    exit(EXIT_FAILURE);
+  }
   BURN(sun);
   sun.sun_family = AF_UNIX;
   memcpy(sun.sun_path, name, sz);
@@ -2525,48 +2527,68 @@ void a_listen(const char *name, uid_t u, gid_t g, mode_t m)
 
   omask = umask(0077);
 again:
-  if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
-    die(EXIT_FAILURE, "couldn't create socket: %s", strerror(errno));
+  if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
+    a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+          "create-failed", "?ERRNO", A_END);
+    exit(EXIT_FAILURE);
+  }
   if (bind(fd, (struct sockaddr *)&sun, sz) < 0) {
     struct stat st;
     int e = errno;
     if (errno != EADDRINUSE) {
-      die(EXIT_FAILURE, "couldn't bind to address `%s': %s",
-         sun.sun_path, strerror(e));
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "bind-failed", "?ERRNO", A_END);
+      exit(EXIT_FAILURE);
+    }
+    if (!n) {
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "too-many-retries", A_END);
+      exit(EXIT_FAILURE);
     }
-    if (!n)
-      die(EXIT_FAILURE, "too many retries; giving up");
     n--;
     if (!connect(fd, (struct sockaddr *)&sun, sz)) {
-      die(EXIT_FAILURE, "server already listening on admin socket `%s'",
-         sun.sun_path);
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "already-in-use", A_END);
+      exit(EXIT_FAILURE);
+    }
+    if (errno != ECONNREFUSED) {
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "bind-failed", "?ERR", e, A_END);
+      exit(EXIT_FAILURE);
     }
-    if (errno != ECONNREFUSED)
-      die(EXIT_FAILURE, "couldn't bind to address: %s", strerror(e));
     if (stat(sun.sun_path, &st)) {
       if (errno == ENOENT) { close(fd); goto again; }
-      die(EXIT_FAILURE, "couldn't stat `%s': %s",
-         sun.sun_path, strerror(errno));
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "stat-failed", "?ERRNO", A_END);
+      exit(EXIT_FAILURE);
+    }
+    if (!S_ISSOCK(st.st_mode)) {
+      a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+            "not-a-socket", A_END);
+      exit(EXIT_FAILURE);
     }
-    if (!S_ISSOCK(st.st_mode))
-      die(EXIT_FAILURE, "object `%s' isn't a socket", sun.sun_path);
     T( trace(T_ADMIN, "admin: stale socket found; removing it"); )
     unlink(sun.sun_path);
     close(fd);
     goto again;
   }
   if (chown(sun.sun_path, u, g)) {
-    die(EXIT_FAILURE, "failed to set socket owner: %s",
-       strerror(errno));
+    a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+          "chown-failed", "?ERRNO", A_END);
+    exit(EXIT_FAILURE);
   }
   if (chmod(sun.sun_path, m)) {
-    die(EXIT_FAILURE, "failed to set socket permissions: %s",
-       strerror(errno));
+    a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+          "chmod-failed", "?ERRNO", A_END);
+    exit(EXIT_FAILURE);
   }
   umask(omask);
   fdflags(fd, O_NONBLOCK, O_NONBLOCK, FD_CLOEXEC, FD_CLOEXEC);
-  if (listen(fd, 5))
-    die(EXIT_FAILURE, "couldn't listen on socket: %s", strerror(errno));
+  if (listen(fd, 5)) {
+    a_warn("ADMIN", "admin-socket", "%s", sun.sun_path,
+          "listen-failed", "?ERRNO", A_END);
+    exit(EXIT_FAILURE);
+  }
 
   /* --- Listen to the socket --- */
 
@@ -2644,8 +2666,10 @@ void a_init(void)
                       (adns_if_permit_ipv4 | adns_if_permit_ipv6 |
                        adns_if_noserverwarn | adns_if_nosigpipe |
                        adns_if_noautosys),
-                      0)) != 0)
-    die(EXIT_FAILURE, "failed to initialize ADNS: %s", strerror(errno));
+                      0)) != 0) {
+    a_warn("ADMIN", "adns-init-failed", "?ERRNO", A_END);
+    exit(EXIT_FAILURE);
+  }
   sel_addhook(&sel, &hook, before_select, after_select, 0);
 #else
   bres_init(&sel);