processes plugin: Use stack memory when reading the command line.

Also remove the call to the non-threadsafe strtok(3) call and fix the
size passed to sstrncpy().

diff --git a/src/processes.c b/src/processes.c
index a1aa17c21c0dfe745b2bb9585956055c8cad07f7..a09eb501cdd95b43490a89513955fa8c0ed4ea48 100644 (file)
--- a/src/processes.c
+++ b/src/processes.c
@@ -1195,25 +1195,30 @@ static int read_fork_rate ()
 #endif /*KERNEL_LINUX */
 
 #if KERNEL_SOLARIS
-static char *ps_get_cmdline(pid_t pid)
+static const char *ps_get_cmdline (pid_t pid, /* {{{ */
+               char *buffer, size_t buffer_size)
 {
-       char f_psinfo[64];
-       char cmdline[80];
-       char *buffer = NULL;
-       psinfo_t *myInfo;
+       char path[PATH_MAX];
+       psinfo_t info;
+       int status;
 
-       snprintf(f_psinfo, sizeof (f_psinfo), "/proc/%i/psinfo", pid);
+       snprintf(path, sizeof (path), "/proc/%i/psinfo", pid);
 
-       buffer = (char *)malloc(sizeof (psinfo_t));
-       memset(buffer, 0, sizeof(psinfo_t));
-       read_file_contents(f_psinfo, buffer, sizeof (psinfo_t));
-       myInfo = (psinfo_t *) buffer;
+       status = read_file_contents (path, (void *) &info, sizeof (info));
+       if (status != ((int) buffer_size))
+       {
+               ERROR ("processes plugin: Unexpected return value "
+                               "while reading \"%s\": "
+                               "Returned %i but expected %zu.",
+                               path, status, buffer_size);
+               return (NULL);
+       }
 
-       sstrncpy(cmdline, myInfo->pr_psargs, sizeof (myInfo->pr_psargs));
+       info.pr_psargs[sizeof (info.pr_psargs) - 1] = 0;
+       sstrncpy (buffer, info.pr_psargs, buffer_size);
 
-       sfree(myInfo);
-       return strtok(cmdline, " ");
-}
+       return (buffer);
+} /* }}} int ps_get_cmdline */
 
 /*
  * Reads process information on the Solaris OS. The information comes mainly from
@@ -2077,8 +2082,9 @@ static int ps_read (void)
        procstat_t *ps_ptr;
        char state;
 
-       ps_list_reset();
+       char cmdline[ARG_MAX];
 
+       ps_list_reset ();
 
        proc = opendir("/proc");
        if (proc == NULL) {
@@ -2142,9 +2148,12 @@ static int ps_read (void)
                        break;
                }
 
-               ps_list_add(ps.name, ps_get_cmdline(pid), &pse);
 
-       } // while()
+               ps_list_add (ps.name,
+                               ps_get_cmdline ((pid_t) pid,
+                                       cmdline, sizeof (cmdline)),
+                               &pse);
+       } /* while(readdir) */
        closedir (proc);
 
        ps_submit_state ("running",  running);