Assume that /proc/meminfo can be missing

[elogind.git] / src / shared / socket-util.c

diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index 6c94d69486806cdf5dea43c0c01f713cc38ab8de..c583d3dfea3d8902262de499e646fcb08ad296d3 100644 (file)
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -68,7 +68,7 @@ int socket_address_parse(SocketAddress *a, const char *s) {
                 errno = 0;
                 if (inet_pton(AF_INET6, n, &a->sockaddr.in6.sin6_addr) <= 0) {
                         free(n);
-                        return errno != 0 ? -errno : -EINVAL;
+                        return errno > 0 ? -errno : -EINVAL;
                 }
 
                 free(n);
@@ -204,7 +204,7 @@ int socket_address_parse_netlink(SocketAddress *a, const char *s) {
 
         errno = 0;
         if (sscanf(s, "%ms %u", &sfamily, &group) < 1)
-                return errno ? -errno : -EINVAL;
+                return errno > 0 ? -errno : -EINVAL;
 
         family = netlink_family_from_string(sfamily);
         if (family < 0)
@@ -364,7 +364,7 @@ int socket_address_print(const SocketAddress *a, char **p) {
         }
 
         case AF_NETLINK: {
-                char _cleanup_free_ *sfamily = NULL;
+                _cleanup_free_ char *sfamily = NULL;
 
                 r = netlink_family_to_string_alloc(a->protocol, &sfamily);
                 if (r < 0)
@@ -565,6 +565,45 @@ bool socket_address_matches_fd(const SocketAddress *a, int fd) {
         return false;
 }
 
+int make_socket_fd(const char* address, int flags) {
+        SocketAddress a;
+        int fd, r;
+        _cleanup_free_ char *p = NULL;
+
+        r = socket_address_parse(&a, address);
+        if (r < 0) {
+                log_error("failed to parse socket: %s", strerror(-r));
+                return r;
+        }
+
+        fd = socket(socket_address_family(&a), flags, 0);
+        if (fd < 0) {
+                log_error("socket(): %m");
+                return -errno;
+        }
+
+        r = socket_address_print(&a, &p);
+        if (r < 0) {
+                log_error("socket_address_print(): %s", strerror(-r));
+                return r;
+        }
+        log_info("Listening on %s", p);
+
+        r = bind(fd, &a.sockaddr.sa, a.size);
+        if (r < 0) {
+                log_error("bind to %s: %m", address);
+                return -errno;
+        }
+
+        r = listen(fd, SOMAXCONN);
+        if (r < 0) {
+                log_error("listen on %s: %m", address);
+                return -errno;
+        }
+
+        return fd;
+}
+
 static const char* const netlink_family_table[] = {
         [NETLINK_ROUTE] = "route",
         [NETLINK_FIREWALL] = "firewall",