It's possible to change file without changing mtime of file.

So we're stat'ing files for the changes of files.
The detection of not_a_crontab files was added: files started with
dot aren't crontabs etc.

diff --git a/crontab.c b/crontab.c
index 6dea8c6463e6c1c51b8e2b746c76a129373673b5..b1c730a8e5724d84c23a95711fcde1da3333d455 100644 (file)
--- a/crontab.c
+++ b/crontab.c
@@ -363,13 +363,6 @@ edit_cmd(void) {
                }
        }
 
-       if (fstat(fileno(f), &statbuf) < 0) {
-               perror("fstat");
-               goto fatal;
-       }
-       utimebuf.actime = statbuf.st_atime;
-       utimebuf.modtime = statbuf.st_mtime;
-
        /* Turn off signals. */
        (void)signal(SIGHUP, SIG_IGN);
        (void)signal(SIGINT, SIG_IGN);
@@ -425,6 +418,9 @@ edit_cmd(void) {
                perror(Filename);
                exit(ERROR_EXIT);
        }
+       /* Set it to 1970 */
+       utimebuf.actime = 0;
+       utimebuf.modtime = 0;
        utime(Filename, &utimebuf);
  again:
        rewind(NewCrontab);
@@ -521,7 +517,7 @@ edit_cmd(void) {
                goto remove;        
        }
 
-       if (utimebuf.modtime == statbuf.st_mtime) {
+       if (statbuf.st_mtime == 0) {
                fprintf(stderr, "%s: no changes made to crontab\n",
                        ProgramName);
                goto remove;