svn commit: r293133 - in stable/9/usr.sbin/cron: cron crontab

[Pedro F. Giffuni]

Author: pfg
Date: Mon Jan  4 03:22:06 2016
New Revision: 293133
URL: https://svnweb.freebsd.org/changeset/base/293133

Log:
  MFC	r292605, r292606, r292607, r292608:
  
  cron: bring some fixes for Coverity reports and other issues.
  
  crontab: replace malloc + bzero with calloc
  crontab: properly free an entry
  cron: Check the return value of pipe(2)
  
  CID:	271773, 1009830,

Modified:
  stable/9/usr.sbin/cron/cron/do_command.c
  stable/9/usr.sbin/cron/cron/popen.c
  stable/9/usr.sbin/cron/crontab/crontab.c
Directory Properties:
  stable/9/usr.sbin/cron/   (props changed)
  stable/9/usr.sbin/cron/crontab/   (props changed)

Modified: stable/9/usr.sbin/cron/cron/do_command.c
==============================================================================
--- stable/9/usr.sbin/cron/cron/do_command.c	Mon Jan  4 03:20:41 2016	(r293132)
+++ stable/9/usr.sbin/cron/cron/do_command.c	Mon Jan  4 03:22:06 2016	(r293133)
@@ -161,8 +161,10 @@ child_process(e, u)
 
 	/* create some pipes to talk to our future child
 	 */
-	pipe(stdin_pipe);	/* child's stdin */
-	pipe(stdout_pipe);	/* child's stdout */
+	if (pipe(stdin_pipe) != 0 || pipe(stdout_pipe) != 0) {
+		log_it("CRON", getpid(), "error", "can't pipe");
+		exit(ERROR_EXIT);
+	}
 
 	/* since we are a forked process, we can diddle the command string
 	 * we were passed -- nobody else is going to use it again, right?

Modified: stable/9/usr.sbin/cron/cron/popen.c
==============================================================================
--- stable/9/usr.sbin/cron/cron/popen.c	Mon Jan  4 03:20:41 2016	(r293132)
+++ stable/9/usr.sbin/cron/cron/popen.c	Mon Jan  4 03:22:06 2016	(r293133)
@@ -82,9 +82,8 @@ cron_popen(program, type, e)
 	if (!pids) {
 		if ((fds = getdtablesize()) <= 0)
 			return(NULL);
-		if (!(pids = (PID_T *)malloc((u_int)(fds * sizeof(PID_T)))))
+		if (!(pids = calloc(fds, sizeof(PID_T))))
 			return(NULL);
-		bzero((char *)pids, fds * sizeof(PID_T));
 	}
 	if (pipe(pdes) < 0)
 		return(NULL);

Modified: stable/9/usr.sbin/cron/crontab/crontab.c
==============================================================================
--- stable/9/usr.sbin/cron/crontab/crontab.c	Mon Jan  4 03:20:41 2016	(r293132)
+++ stable/9/usr.sbin/cron/crontab/crontab.c	Mon Jan  4 03:22:06 2016	(r293133)
@@ -558,7 +558,7 @@ replace_cmd() {
 		case FALSE:
 			e = load_entry(tmp, check_error, pw, envp);
 			if (e)
-				free(e);
+				free_entry(e);
 			break;
 		case TRUE:
 			break;