X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fsocket-util.c;h=7f34ea2e939ea86b0e27e482b5ba4ab477e106a1;hb=77d14d9c7f9ce7245eff56aacd420646577892d0;hp=906b970a91e134345f0b76cf45cb78fefb888c7d;hpb=4816a18f33380a33d381b77d41df39113c94500d;p=sliver-openvswitch.git

diff --git a/lib/socket-util.c b/lib/socket-util.c
index 906b970a9..7f34ea2e9 100644
--- a/lib/socket-util.c
+++ b/lib/socket-util.c
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/ioctl.h>
 #include <sys/resource.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
@@ -72,11 +73,11 @@ set_nonblocking(int fd)
         if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) != -1) {
             return 0;
         } else {
-            VLOG_ERR("fcntl(F_SETFL) failed: %s", strerror(errno));
+            VLOG_ERR("fcntl(F_SETFL) failed: %s", ovs_strerror(errno));
             return errno;
         }
     } else {
-        VLOG_ERR("fcntl(F_GETFL) failed: %s", strerror(errno));
+        VLOG_ERR("fcntl(F_GETFL) failed: %s", ovs_strerror(errno));
         return errno;
     }
 }
@@ -132,8 +133,10 @@ rlim_is_finite(rlim_t limit)
 int
 get_max_fds(void)
 {
-    static int max_fds = -1;
-    if (max_fds < 0) {
+    static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
+    static int max_fds;
+
+    if (ovsthread_once_start(&once)) {
         struct rlimit r;
         if (!getrlimit(RLIMIT_NOFILE, &r) && rlim_is_finite(r.rlim_cur)) {
             max_fds = r.rlim_cur;
@@ -141,7 +144,9 @@ get_max_fds(void)
             VLOG_WARN("failed to obtain fd limit, defaulting to 1024");
             max_fds = 1024;
         }
+        ovsthread_once_done(&once);
     }
+
     return max_fds;
 }
 
@@ -197,11 +202,14 @@ lookup_hostname(const char *host_name, struct in_addr *addr)
 
     switch (getaddrinfo(host_name, NULL, &hints, &result)) {
     case 0:
-        *addr = ((struct sockaddr_in *) result->ai_addr)->sin_addr;
+        *addr = ALIGNED_CAST(struct sockaddr_in *,
+                             result->ai_addr)->sin_addr;
         freeaddrinfo(result);
         return 0;
 
+#ifdef EAI_ADDRFAMILY
     case EAI_ADDRFAMILY:
+#endif
     case EAI_NONAME:
     case EAI_SERVICE:
         return ENOENT;
@@ -220,8 +228,10 @@ lookup_hostname(const char *host_name, struct in_addr *addr)
     case EAI_MEMORY:
         return ENOMEM;
 
+#ifdef EAI_NODATA
     case EAI_NODATA:
         return ENXIO;
+#endif
 
     case EAI_SYSTEM:
         return errno;
@@ -255,7 +265,7 @@ check_connection_completion(int fd)
         }
         return 0;
     } else if (retval < 0) {
-        VLOG_ERR_RL(&rl, "poll: %s", strerror(errno));
+        VLOG_ERR_RL(&rl, "poll: %s", ovs_strerror(errno));
         return errno;
     } else {
         return EAGAIN;
@@ -448,7 +458,8 @@ make_unix_socket(int style, bool nonblock,
         int dirfd;
 
         if (unlink(bind_path) && errno != ENOENT) {
-            VLOG_WARN("unlinking \"%s\": %s\n", bind_path, strerror(errno));
+            VLOG_WARN("unlinking \"%s\": %s\n",
+                      bind_path, ovs_strerror(errno));
         }
         fatal_signal_add_file_to_unlink(bind_path);
 
@@ -598,7 +609,7 @@ inet_open_active(int style, const char *target, uint16_t default_port,
     /* Create non-blocking socket. */
     fd = socket(AF_INET, style, 0);
     if (fd < 0) {
-        VLOG_ERR("%s: socket: %s", target, strerror(errno));
+        VLOG_ERR("%s: socket: %s", target, ovs_strerror(errno));
         error = errno;
         goto exit;
     }
@@ -612,7 +623,7 @@ inet_open_active(int style, const char *target, uint16_t default_port,
      * connect(), the handshake SYN frames will be sent with a TOS of 0. */
     error = set_dscp(fd, dscp);
     if (error) {
-        VLOG_ERR("%s: socket: %s", target, strerror(error));
+        VLOG_ERR("%s: socket: %s", target, ovs_strerror(error));
         goto exit;
     }
 
@@ -724,7 +735,7 @@ inet_open_passive(int style, const char *target, int default_port,
     fd = socket(AF_INET, style, 0);
     if (fd < 0) {
         error = errno;
-        VLOG_ERR("%s: socket: %s", target, strerror(error));
+        VLOG_ERR("%s: socket: %s", target, ovs_strerror(error));
         return -error;
     }
     error = set_nonblocking(fd);
@@ -734,14 +745,15 @@ inet_open_passive(int style, const char *target, int default_port,
     if (style == SOCK_STREAM
         && setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof yes) < 0) {
         error = errno;
-        VLOG_ERR("%s: setsockopt(SO_REUSEADDR): %s", target, strerror(error));
+        VLOG_ERR("%s: setsockopt(SO_REUSEADDR): %s",
+                 target, ovs_strerror(error));
         goto error;
     }
 
     /* Bind. */
     if (bind(fd, (struct sockaddr *) &sin, sizeof sin) < 0) {
         error = errno;
-        VLOG_ERR("%s: bind: %s", target, strerror(error));
+        VLOG_ERR("%s: bind: %s", target, ovs_strerror(error));
         goto error;
     }
 
@@ -750,14 +762,14 @@ inet_open_passive(int style, const char *target, int default_port,
      * connect(), the handshake SYN frames will be sent with a TOS of 0. */
     error = set_dscp(fd, dscp);
     if (error) {
-        VLOG_ERR("%s: socket: %s", target, strerror(error));
+        VLOG_ERR("%s: socket: %s", target, ovs_strerror(error));
         goto error;
     }
 
     /* Listen. */
     if (style == SOCK_STREAM && listen(fd, 10) < 0) {
         error = errno;
-        VLOG_ERR("%s: listen: %s", target, strerror(error));
+        VLOG_ERR("%s: listen: %s", target, ovs_strerror(error));
         goto error;
     }
 
@@ -766,7 +778,7 @@ inet_open_passive(int style, const char *target, int default_port,
         socklen_t sin_len = sizeof sin;
         if (getsockname(fd, (struct sockaddr *) &sin, &sin_len) < 0) {
             error = errno;
-            VLOG_ERR("%s: getsockname: %s", target, strerror(error));
+            VLOG_ERR("%s: getsockname: %s", target, ovs_strerror(error));
             goto error;
         }
         if (sin.sin_family != AF_INET || sin_len != sizeof sin) {
@@ -796,15 +808,19 @@ error:
 int
 get_null_fd(void)
 {
-    static int null_fd = -1;
-    if (null_fd < 0) {
+    static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
+    static int null_fd;
+
+    if (ovsthread_once_start(&once)) {
         null_fd = open("/dev/null", O_RDWR);
         if (null_fd < 0) {
             int error = errno;
-            VLOG_ERR("could not open /dev/null: %s", strerror(error));
-            return -error;
+            VLOG_ERR("could not open /dev/null: %s", ovs_strerror(error));
+            null_fd = -error;
         }
+        ovsthread_once_done(&once);
     }
+
     return null_fd;
 }
 
@@ -869,13 +885,13 @@ fsync_parent_dir(const char *file_name)
                  * really an error. */
             } else {
                 error = errno;
-                VLOG_ERR("%s: fsync failed (%s)", dir, strerror(error));
+                VLOG_ERR("%s: fsync failed (%s)", dir, ovs_strerror(error));
             }
         }
         close(fd);
     } else {
         error = errno;
-        VLOG_ERR("%s: open failed (%s)", dir, strerror(error));
+        VLOG_ERR("%s: open failed (%s)", dir, ovs_strerror(error));
     }
     free(dir);
 
@@ -913,7 +929,7 @@ void
 xpipe(int fds[2])
 {
     if (pipe(fds)) {
-        VLOG_FATAL("failed to create pipe (%s)", strerror(errno));
+        VLOG_FATAL("failed to create pipe (%s)", ovs_strerror(errno));
     }
 }
 
@@ -929,7 +945,7 @@ void
 xsocketpair(int domain, int type, int protocol, int fds[2])
 {
     if (socketpair(domain, type, protocol, fds)) {
-        VLOG_FATAL("failed to create socketpair (%s)", strerror(errno));
+        VLOG_FATAL("failed to create socketpair (%s)", ovs_strerror(errno));
     }
 }
 
@@ -944,7 +960,7 @@ getsockopt_int(int fd, int level, int option, const char *optname, int *valuep)
     len = sizeof value;
     if (getsockopt(fd, level, option, &value, &len)) {
         error = errno;
-        VLOG_ERR_RL(&rl, "getsockopt(%s): %s", optname, strerror(error));
+        VLOG_ERR_RL(&rl, "getsockopt(%s): %s", optname, ovs_strerror(error));
     } else if (len != sizeof value) {
         error = EINVAL;
         VLOG_ERR_RL(&rl, "getsockopt(%s): value is %u bytes (expected %zu)",
@@ -1072,7 +1088,7 @@ describe_fd(int fd)
 
     ds_init(&string);
     if (fstat(fd, &s)) {
-        ds_put_format(&string, "fstat failed (%s)", strerror(errno));
+        ds_put_format(&string, "fstat failed (%s)", ovs_strerror(errno));
     } else if (S_ISSOCK(s.st_mode)) {
         describe_sockaddr(&string, fd, getsockname);
         ds_put_cstr(&string, "<->");
@@ -1312,7 +1328,7 @@ recv_data_and_fds(int sock,
             goto error;
         } else {
             size_t n_fds = (p->cmsg_len - CMSG_LEN(0)) / sizeof *fds;
-            const int *fds_data = (const int *) CMSG_DATA(p);
+            const int *fds_data = ALIGNED_CAST(const int *, CMSG_DATA(p));
 
             ovs_assert(n_fds > 0);
             if (n_fds > SOUTIL_MAX_FDS) {
@@ -1338,3 +1354,42 @@ error:
     *n_fdsp = 0;
     return EPROTO;
 }
+
+/* Calls ioctl() on an AF_INET sock, passing the specified 'command' and
+ * 'arg'.  Returns 0 if successful, otherwise a positive errno value. */
+int
+af_inet_ioctl(unsigned long int command, const void *arg)
+{
+    static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
+    static int sock;
+
+    if (ovsthread_once_start(&once)) {
+        sock = socket(AF_INET, SOCK_DGRAM, 0);
+        if (sock < 0) {
+            sock = -errno;
+            VLOG_ERR("failed to create inet socket: %s", ovs_strerror(errno));
+        }
+        ovsthread_once_done(&once);
+    }
+
+    return (sock < 0 ? -sock
+            : ioctl(sock, command, arg) == -1 ? errno
+            : 0);
+}
+
+int
+af_inet_ifreq_ioctl(const char *name, struct ifreq *ifr, unsigned long int cmd,
+                    const char *cmd_name)
+{
+    int error;
+
+    ovs_strzcpy(ifr->ifr_name, name, sizeof ifr->ifr_name);
+    error = af_inet_ioctl(cmd, ifr);
+    if (error) {
+        static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
+        VLOG_DBG_RL(&rl, "%s: ioctl(%s) failed: %s", name, cmd_name,
+                    ovs_strerror(error));
+    }
+    return error;
+}
+