X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fjournal%2Fjournald-kmsg.c;h=c4216c4043370bb8047c99a07faf9336cc9bfe16;hp=35948ea754c4e510509f401c27d6c5a6184e2016;hb=3b97fcbd28f92a1e51887fef5de8844a89bde523;hpb=03e334a1c7dc8c20c38902aa039440763acc9b17

diff --git a/src/journal/journald-kmsg.c b/src/journal/journald-kmsg.c
index 35948ea75..c4216c404 100644
--- a/src/journal/journald-kmsg.c
+++ b/src/journal/journald-kmsg.c
@@ -25,7 +25,7 @@
 #include <sys/mman.h>
 #include <sys/socket.h>
 
-#include <systemd/sd-messages.h>
+#include "systemd/sd-messages.h"
 #include <libudev.h>
 
 #include "journald-server.h"
@@ -37,10 +37,11 @@ void server_forward_kmsg(
         int priority,
         const char *identifier,
         const char *message,
-        struct ucred *ucred) {
+        const struct ucred *ucred) {
 
         struct iovec iovec[5];
-        char header_priority[6], header_pid[16];
+        char header_priority[DECIMAL_STR_MAX(priority) + 3],
+             header_pid[sizeof("[]: ")-1 + DECIMAL_STR_MAX(pid_t) + 1];
         int n = 0;
         char *ident_buf = NULL;
 
@@ -60,8 +61,7 @@ void server_forward_kmsg(
         priority = syslog_fixup_facility(priority);
 
         /* First: priority field */
-        snprintf(header_priority, sizeof(header_priority), "<%i>", priority);
-        char_array_0(header_priority);
+        xsprintf(header_priority, "<%i>", priority);
         IOVEC_SET_STRING(iovec[n++], header_priority);
 
         /* Second: identifier and PID */
@@ -71,8 +71,7 @@ void server_forward_kmsg(
                         identifier = ident_buf;
                 }
 
-                snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid);
-                char_array_0(header_pid);
+                xsprintf(header_pid, "["PID_FMT"]: ", ucred->pid);
 
                 if (identifier)
                         IOVEC_SET_STRING(iovec[n++], identifier);
@@ -88,7 +87,7 @@ void server_forward_kmsg(
         IOVEC_SET_STRING(iovec[n++], "\n");
 
         if (writev(s->dev_kmsg_fd, iovec, n) < 0)
-                log_debug("Failed to write to /dev/kmsg for logging: %m");
+                log_debug_errno(errno, "Failed to write to /dev/kmsg for logging: %m");
 
         free(ident_buf);
 }
@@ -104,7 +103,7 @@ static bool is_us(const char *pid) {
         return t == getpid();
 }
 
-static void dev_kmsg_record(Server *s, char *p, size_t l) {
+static void dev_kmsg_record(Server *s, const char *p, size_t l) {
         struct iovec iovec[N_IOVEC_META_FIELDS + 7 + N_IOVEC_KERNEL_FIELDS + 2 + N_IOVEC_UDEV_FIELDS];
         char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL;
         int priority, r;
@@ -152,7 +151,7 @@ static void dev_kmsg_record(Server *s, char *p, size_t l) {
                 /* Did we lose any? */
                 if (serial > *s->kernel_seqnum)
                         server_driver_message(s, SD_MESSAGE_JOURNAL_MISSED, "Missed %"PRIu64" kernel messages",
-                                              serial - *s->kernel_seqnum - 1);
+                                              serial - *s->kernel_seqnum);
 
                 /* Make sure we never read this one again. Note that
                  * we always store the next message serial we expect
@@ -274,6 +273,9 @@ static void dev_kmsg_record(Server *s, char *p, size_t l) {
         if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
                 IOVEC_SET_STRING(iovec[n++], syslog_priority);
 
+        if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
+                IOVEC_SET_STRING(iovec[n++], syslog_facility);
+
         if ((priority & LOG_FACMASK) == LOG_KERN)
                 IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=kernel");
         else {
@@ -295,9 +297,6 @@ static void dev_kmsg_record(Server *s, char *p, size_t l) {
                         if (syslog_pid)
                                 IOVEC_SET_STRING(iovec[n++], syslog_pid);
                 }
-
-                if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
-                        IOVEC_SET_STRING(iovec[n++], syslog_facility);
         }
 
         message = cunescape_length_with_prefix(p, pl, "MESSAGE=");
@@ -342,7 +341,7 @@ static int server_read_dev_kmsg(Server *s) {
                 if (errno == EAGAIN || errno == EINTR || errno == EPIPE)
                         return 0;
 
-                log_error("Failed to read from kernel: %m");
+                log_error_errno(errno, "Failed to read from kernel: %m");
                 return -errno;
         }
 
@@ -413,13 +412,13 @@ int server_open_dev_kmsg(Server *s) {
                         goto fail;
                 }
 
-                log_error("Failed to add /dev/kmsg fd to event loop: %s", strerror(-r));
+                log_error_errno(r, "Failed to add /dev/kmsg fd to event loop: %m");
                 goto fail;
         }
 
         r = sd_event_source_set_priority(s->dev_kmsg_event_source, SD_EVENT_PRIORITY_IMPORTANT+10);
         if (r < 0) {
-                log_error("Failed to adjust priority of kmsg event source: %s", strerror(-r));
+                log_error_errno(r, "Failed to adjust priority of kmsg event source: %m");
                 goto fail;
         }
 
@@ -446,18 +445,18 @@ int server_open_kernel_seqnum(Server *s) {
 
         fd = open("/run/systemd/journal/kernel-seqnum", O_RDWR|O_CREAT|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW, 0644);
         if (fd < 0) {
-                log_error("Failed to open /run/systemd/journal/kernel-seqnum, ignoring: %m");
+                log_error_errno(errno, "Failed to open /run/systemd/journal/kernel-seqnum, ignoring: %m");
                 return 0;
         }
 
         if (posix_fallocate(fd, 0, sizeof(uint64_t)) < 0) {
-                log_error("Failed to allocate sequential number file, ignoring: %m");
+                log_error_errno(errno, "Failed to allocate sequential number file, ignoring: %m");
                 return 0;
         }
 
         p = mmap(NULL, sizeof(uint64_t), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
         if (p == MAP_FAILED) {
-                log_error("Failed to map sequential number file, ignoring: %m");
+                log_error_errno(errno, "Failed to map sequential number file, ignoring: %m");
                 return 0;
         }