X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fbootchart%2Flog.c;h=ccec03f12cb18c6b85c49dcdc888df50d5d5ba07;hb=0ea9530d401827e299c6e04a433e69a7a2a89d80;hp=cf6c3a73f6bbe0214262d1c706de953550bd5d69;hpb=f2f85884caac671da84256acb44148df9a4dca70;p=elogind.git

diff --git a/src/bootchart/log.c b/src/bootchart/log.c
index cf6c3a73f..ccec03f12 100644
--- a/src/bootchart/log.c
+++ b/src/bootchart/log.c
@@ -57,7 +57,7 @@ double gettime_ns(void)
 
 void log_uptime(void)
 {
-        FILE *f;
+        FILE _cleanup_fclose_ *f = NULL;
         char str[32];
         double uptime;
 
@@ -65,11 +65,9 @@ void log_uptime(void)
 
         if (!f)
                 return;
-        if (!fscanf(f, "%s %*s", str)) {
-                fclose(f);
+        if (!fscanf(f, "%s %*s", str))
                 return;
-        }
-        fclose(f);
+
         uptime = strtod(str, NULL);
 
         log_start = gettime_ns();
@@ -95,12 +93,31 @@ static char *bufgetline(char *buf)
         return c;
 }
 
+static int pid_cmdline_strncpy(char *buffer, int pid, size_t buf_len) {
+	char filename[PATH_MAX];
+	int _cleanup_close_ fd=-1;
+	ssize_t n;
+
+	sprintf(filename, "%d/cmdline", pid);
+	fd = openat(procfd, filename, O_RDONLY);
+	if (fd < 0)
+	        return -errno;
+
+	n = read(fd, buffer, buf_len-1);
+        if (n > 0) {
+                int i;
+                for (i = 0; i < n; i++)
+                        if (buffer[i] == '\0')
+                                buffer[i] = ' ';
+                buffer[n] = '\0';
+        }
+	return 0;
+}
 
 void log_sample(int sample)
 {
         static int vmstat;
         static int schedstat;
-        FILE *st;
         char buf[4095];
         char key[256];
         char val[256];
@@ -233,6 +250,7 @@ schedstat_next:
 
                 /* end of our LL? then append a new record */
                 if (ps->pid != pid) {
+                        FILE _cleanup_fclose_ *st = NULL;
                         char t[32];
                         struct ps_struct *parent;
 
@@ -244,7 +262,7 @@ schedstat_next:
                         ps = ps->next_ps;
                         ps->pid = pid;
 
-                        ps->sample = calloc(len + 1, sizeof(struct ps_sched_struct));
+                        ps->sample = calloc(samples_len + 1, sizeof(struct ps_sched_struct));
                         if (!ps->sample) {
                                 perror("calloc(ps_struct)");
                                 exit (EXIT_FAILURE);
@@ -273,7 +291,12 @@ schedstat_next:
                         if (!sscanf(buf, "%s %*s %*s", key))
                                 continue;
 
-                        strncpy(ps->name, key, 16);
+                        strncpy(ps->name, key, 256);
+
+                        /* cmdline */
+                        if (show_cmdline)
+                                pid_cmdline_strncpy(ps->name, pid, 256);
+
                         /* discard line 2 */
                         m = bufgetline(buf);
                         if (!m)
@@ -295,10 +318,8 @@ schedstat_next:
                         if (!st)
                                 continue;
                         if (!fscanf(st, "%*s %*s %*s %i", &p)) {
-                                fclose(st);
                                 continue;
                         }
-                        fclose(st);
                         ps->ppid = p;
 
                         /*
@@ -433,7 +454,11 @@ catch_rename:
                         if (!sscanf(buf, "%s %*s %*s", key))
                                 continue;
 
-                        strncpy(ps->name, key, 16);
+                        strncpy(ps->name, key, 256);
+
+                        /* cmdline */
+                        if (show_cmdline)
+                                pid_cmdline_strncpy(ps->name, pid, 256);
                 }
         }
 }