X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Futmp-wtmp.c;h=7fb6fe3a6751602718039b2a8da55772cbaca2e7;hp=30a0c031f3f08908de7313a62cce39f7141f3b16;hb=e777ddfd71f3b2d3217ffe74f287388832915d0b;hpb=9003d9b0d628be059922e522fd35f9c5b4d8b039

diff --git a/src/shared/utmp-wtmp.c b/src/shared/utmp-wtmp.c
index 30a0c031f..7fb6fe3a6 100644
--- a/src/shared/utmp-wtmp.c
+++ b/src/shared/utmp-wtmp.c
@@ -21,12 +21,11 @@
 
 #include <utmpx.h>
 #include <errno.h>
-#include <assert.h>
 #include <string.h>
 #include <sys/utsname.h>
 #include <fcntl.h>
 #include <unistd.h>
-#include <sys/poll.h>
+#include <poll.h>
 
 #include "macro.h"
 #include "path-util.h"
@@ -92,8 +91,6 @@ int utmp_get_runlevel(int *runlevel, int *previous) {
 static void init_timestamp(struct utmpx *store, usec_t t) {
         assert(store);
 
-        zero(*store);
-
         if (t <= 0)
                 t = now(CLOCK_REALTIME);
 
@@ -143,7 +140,7 @@ static int write_entry_wtmp(const struct utmpx *store) {
         assert(store);
 
         /* wtmp is a simple append-only file where each entry is
-        simply appended to * the end; i.e. basically a log. */
+        simply appended to the end; i.e. basically a log. */
 
         errno = 0;
         updwtmpx(_PATH_WTMPX, store);
@@ -172,7 +169,7 @@ static int write_entry_both(const struct utmpx *store) {
 }
 
 int utmp_put_shutdown(void) {
-        struct utmpx store;
+        struct utmpx store = {};
 
         init_entry(&store, 0);
 
@@ -183,7 +180,7 @@ int utmp_put_shutdown(void) {
 }
 
 int utmp_put_reboot(usec_t t) {
-        struct utmpx store;
+        struct utmpx store = {};
 
         init_entry(&store, t);
 
@@ -206,16 +203,17 @@ _pure_ static const char *sanitize_id(const char *id) {
 }
 
 int utmp_put_init_process(const char *id, pid_t pid, pid_t sid, const char *line) {
-        struct utmpx store;
+        struct utmpx store = {
+                .ut_type = INIT_PROCESS,
+                .ut_pid = pid,
+                .ut_session = sid,
+        };
 
         assert(id);
 
         init_timestamp(&store, 0);
 
-        store.ut_type = INIT_PROCESS;
-        store.ut_pid = pid;
-        store.ut_session = sid;
-
+        /* ut_id needs only be nul-terminated if it is shorter than sizeof(ut_id) */
         strncpy(store.ut_id, sanitize_id(id), sizeof(store.ut_id));
 
         if (line)
@@ -225,14 +223,15 @@ int utmp_put_init_process(const char *id, pid_t pid, pid_t sid, const char *line
 }
 
 int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
-        struct utmpx lookup, store, store_wtmp, *found;
+        struct utmpx lookup = {
+                .ut_type = INIT_PROCESS /* looks for DEAD_PROCESS, LOGIN_PROCESS, USER_PROCESS, too */
+        }, store, store_wtmp, *found;
 
         assert(id);
 
         setutxent();
 
-        zero(lookup);
-        lookup.ut_type = INIT_PROCESS; /* looks for DEAD_PROCESS, LOGIN_PROCESS, USER_PROCESS, too */
+        /* ut_id needs only be nul-terminated if it is shorter than sizeof(ut_id) */
         strncpy(lookup.ut_id, sanitize_id(id), sizeof(lookup.ut_id));
 
         found = getutxid(&lookup);
@@ -260,7 +259,7 @@ int utmp_put_dead_process(const char *id, pid_t pid, int code, int status) {
 
 
 int utmp_put_runlevel(int runlevel, int previous) {
-        struct utmpx store;
+        struct utmpx store = {};
         int r;
 
         assert(runlevel > 0);