X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fjournal%2Fjournald-syslog.c;h=cbb944f287dab955369c8f93834b2ea205ccff4f;hp=c4f81b68f263d4b3bfbcefd90daff0a4f1fb4b5c;hb=40b71e89bae4e51768db4dc50ec64c1e9c96eec4;hpb=e88baee88fad8bc59d33b55a7a2d640ef9e16cd6

diff --git a/src/journal/journald-syslog.c b/src/journal/journald-syslog.c
index c4f81b68f..cbb944f28 100644
--- a/src/journal/journald-syslog.c
+++ b/src/journal/journald-syslog.c
@@ -25,37 +25,39 @@
 
 #include "systemd/sd-messages.h"
 #include "socket-util.h"
-#include "journald.h"
+#include "selinux-util.h"
+#include "journald-server.h"
 #include "journald-syslog.h"
 #include "journald-kmsg.h"
 #include "journald-console.h"
+#include "journald-wall.h"
 
 /* Warn once every 30s if we missed syslog message */
 #define WARN_FORWARD_SYSLOG_MISSED_USEC (30 * USEC_PER_SEC)
 
 static void forward_syslog_iovec(Server *s, const struct iovec *iovec, unsigned n_iovec, struct ucred *ucred, struct timeval *tv) {
-        struct msghdr msghdr;
+
+        union sockaddr_union sa = {
+                .un.sun_family = AF_UNIX,
+                .un.sun_path = "/run/systemd/journal/syslog",
+        };
+        struct msghdr msghdr = {
+                .msg_iov = (struct iovec *) iovec,
+                .msg_iovlen = n_iovec,
+                .msg_name = &sa,
+                .msg_namelen = offsetof(union sockaddr_union, un.sun_path)
+                               + sizeof("/run/systemd/journal/syslog") - 1,
+        };
         struct cmsghdr *cmsg;
         union {
                 struct cmsghdr cmsghdr;
                 uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
         } control;
-        union sockaddr_union sa;
 
         assert(s);
         assert(iovec);
         assert(n_iovec > 0);
 
-        zero(msghdr);
-        msghdr.msg_iov = (struct iovec*) iovec;
-        msghdr.msg_iovlen = n_iovec;
-
-        zero(sa);
-        sa.un.sun_family = AF_UNIX;
-        strncpy(sa.un.sun_path, "/run/systemd/journal/syslog", sizeof(sa.un.sun_path));
-        msghdr.msg_name = &sa;
-        msghdr.msg_namelen = offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path);
-
         if (ucred) {
                 zero(control);
                 msghdr.msg_control = &control;
@@ -236,7 +238,7 @@ size_t syslog_parse_identifier(const char **buf, char **identifier, char **pid)
         return e;
 }
 
-void syslog_parse_priority(char **p, int *priority) {
+void syslog_parse_priority(const char **p, int *priority, bool with_facility) {
         int a = 0, b = 0, c = 0;
         int k;
 
@@ -265,10 +267,14 @@ void syslog_parse_priority(char **p, int *priority) {
         } else
                 return;
 
-        if (a < 0 || b < 0 || c < 0)
+        if (a < 0 || b < 0 || c < 0 ||
+            (!with_facility && (a || b || c > 7)))
                 return;
 
-        *priority = a*100+b*10+c;
+        if (with_facility)
+                *priority = a*100 + b*10 + c;
+        else
+                *priority = (*priority & LOG_FACMASK) | c;
         *p += k;
 }
 
@@ -361,7 +367,7 @@ void server_process_syslog_message(
         assert(buf);
 
         orig = buf;
-        syslog_parse_priority((char**) &buf, &priority);
+        syslog_parse_priority(&buf, &priority, true);
 
         if (s->forward_to_syslog)
                 forward_syslog_raw(s, priority, orig, ucred, tv);
@@ -375,6 +381,9 @@ void server_process_syslog_message(
         if (s->forward_to_console)
                 server_forward_console(s, priority, identifier, buf, ucred);
 
+        if (s->forward_to_wall)
+                server_forward_wall(s, priority, identifier, buf, ucred);
+
         IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=syslog");
 
         if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
@@ -400,7 +409,7 @@ void server_process_syslog_message(
         if (message)
                 IOVEC_SET_STRING(iovec[n++], message);
 
-        server_dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, NULL, priority);
+        server_dispatch_message(s, iovec, n, ELEMENTSOF(iovec), ucred, tv, label, label_len, NULL, priority, 0);
 
         free(message);
         free(identifier);
@@ -412,13 +421,15 @@ void server_process_syslog_message(
 }
 
 int server_open_syslog_socket(Server *s) {
-        union sockaddr_union sa;
         int one, r;
-        struct epoll_event ev;
 
         assert(s);
 
         if (s->syslog_fd < 0) {
+                union sockaddr_union sa = {
+                        .un.sun_family = AF_UNIX,
+                        .un.sun_path = "/dev/log",
+                };
 
                 s->syslog_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
                 if (s->syslog_fd < 0) {
@@ -426,10 +437,6 @@ int server_open_syslog_socket(Server *s) {
                         return -errno;
                 }
 
-                zero(sa);
-                sa.un.sun_family = AF_UNIX;
-                strncpy(sa.un.sun_path, "/dev/log", sizeof(sa.un.sun_path));
-
                 unlink(sa.un.sun_path);
 
                 r = bind(s->syslog_fd, &sa.sa, offsetof(union sockaddr_union, un.sun_path) + strlen(sa.un.sun_path));
@@ -450,10 +457,12 @@ int server_open_syslog_socket(Server *s) {
         }
 
 #ifdef HAVE_SELINUX
-        one = 1;
-        r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
-        if (r < 0)
-                log_warning("SO_PASSSEC failed: %m");
+        if (use_selinux()) {
+                one = 1;
+                r = setsockopt(s->syslog_fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one));
+                if (r < 0)
+                        log_warning("SO_PASSSEC failed: %m");
+        }
 #endif
 
         one = 1;
@@ -463,12 +472,10 @@ int server_open_syslog_socket(Server *s) {
                 return -errno;
         }
 
-        zero(ev);
-        ev.events = EPOLLIN;
-        ev.data.fd = s->syslog_fd;
-        if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->syslog_fd, &ev) < 0) {
-                log_error("Failed to add syslog server fd to epoll object: %m");
-                return -errno;
+        r = sd_event_add_io(s->event, &s->syslog_event_source, s->syslog_fd, EPOLLIN, process_datagram, s);
+        if (r < 0) {
+                log_error("Failed to add syslog server fd to event loop: %s", strerror(-r));
+                return r;
         }
 
         return 0;