sd-rtnl: do not require ifindex to be set for SETLINK messages

[elogind.git] / src / libsystemd-daemon / sd-daemon.c

diff --git a/src/libsystemd-daemon/sd-daemon.c b/src/libsystemd-daemon/sd-daemon.c
index 485b301023f3a7d36e388c282a4816e18c2f9499..1a713ef2e8c587e6a1ccd6bbe2e9a75178462dd5 100644 (file)
--- a/src/libsystemd-daemon/sd-daemon.c
+++ b/src/libsystemd-daemon/sd-daemon.c
@@ -47,6 +47,7 @@
 #  include <mqueue.h>
 #endif
 
+#include "util.h"
 #include "sd-daemon.h"
 
 #if (__GNUC__ >= 4)
@@ -441,18 +442,18 @@ _sd_export_ int sd_notify(int unset_environment, const char *state) {
                 goto finish;
         }
 
-        memset(&sockaddr, 0, sizeof(sockaddr));
+        memzero(&sockaddr, sizeof(sockaddr));
         sockaddr.sa.sa_family = AF_UNIX;
         strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path));
 
         if (sockaddr.un.sun_path[0] == '@')
                 sockaddr.un.sun_path[0] = 0;
 
-        memset(&iovec, 0, sizeof(iovec));
+        memzero(&iovec, sizeof(iovec));
         iovec.iov_base = (char*) state;
         iovec.iov_len = strlen(state);
 
-        memset(&msghdr, 0, sizeof(msghdr));
+        memzero(&msghdr, sizeof(msghdr));
         msghdr.msg_name = &sockaddr;
         msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + strlen(e);
 
@@ -518,3 +519,69 @@ _sd_export_ int sd_booted(void) {
         return !!S_ISDIR(st.st_mode);
 #endif
 }
+
+_sd_export_ int sd_watchdog_enabled(int unset_environment, uint64_t *usec) {
+
+#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
+        return 0;
+#else
+        unsigned long long ll;
+        unsigned long l;
+        const char *e;
+        char *p = NULL;
+        int r;
+
+        e = getenv("WATCHDOG_PID");
+        if (!e) {
+                r = 0;
+                goto finish;
+        }
+
+        errno = 0;
+        l = strtoul(e, &p, 10);
+        if (errno > 0) {
+                r = -errno;
+                goto finish;
+        }
+        if (!p || p == e || *p || l <= 0) {
+                r = -EINVAL;
+                goto finish;
+        }
+
+        /* Is this for us? */
+        if (getpid() != (pid_t) l) {
+                r = 0;
+                goto finish;
+        }
+
+        e = getenv("WATCHDOG_USEC");
+        if (!e) {
+                r = -EINVAL;
+                goto finish;
+        }
+
+        errno = 0;
+        ll = strtoull(e, &p, 10);
+        if (errno > 0) {
+                r = -errno;
+                goto finish;
+        }
+        if (!p || p == e || *p || l <= 0) {
+                r = -EINVAL;
+                goto finish;
+        }
+
+        if (usec)
+                *usec = ll;
+
+        r = 1;
+
+finish:
+        if (unset_environment) {
+                unsetenv("WATCHDOG_PID");
+                unsetenv("WATCHDOG_USEC");
+        }
+
+        return r;
+#endif
+}