In your dreams.
> here is a simple patch to replace /etc/crontab by /etc/cron.d/.
> You need to manually mkdir /etc/cron.d.
>
>
> --- pathnames_original.h Mon Apr 7 22:31:53 2014
> +++ pathnames.h Tue Apr 8 16:12:30 2014
> @@ -92,8 +92,8 @@
> #define PIDFILE "cron.pid"
> #define _PATH_CRON_PID PIDDIR PIDFILE
>
> - /* 4.3BSD-style crontab */
> -#define SYSCRONTAB "/etc/crontab"
> + /* system crontab dir */
> +#define SYSCRON_DIR "/etc/cron.d"
>
> /* what editor to use if no EDITOR or VISUAL
> * environment variable specified.
> @@ -42,30 +42,31 @@
>
> Debug(DLOAD, ("[%ld] load_database()\n", (long)getpid()))
>
> - /* before we start loading any data, do a stat on SPOOL_DIR
> - * so that if anything changes as of this moment (i.e., before
> we've
> - * cached any of the database), we'll see the changes next time.
> + /* before we start loading any data, do a stat on SPOOL_DIR and
> + * SYSCRON_DIR so that if anything changes as of this moment
> + * (i.e., before we've cached any of the database), we'll see
> + * the changes next time.
> */
> if (stat(SPOOL_DIR, &statbuf) < OK) {
> log_it("CRON", getpid(), "STAT FAILED", SPOOL_DIR);
> return;
> }
>
> - /* track system crontab file
> - */
> - if (stat(SYSCRONTAB, &syscron_stat) < OK)
> - syscron_stat.st_mtime = 0;
> + if (stat(SYSCRON_DIR, &syscron_stat) < OK) {
> + log_it("CRON", getpid(), "STAT FAILED", SYSCRON_DIR);
> + return;
> + }
>
> - /* if spooldir's mtime has not changed, we don't need to fiddle
> with
> - * the database.
> + /* if spooldir's and syscrondir's mtime has not changed, we
> don't
> + * need to fiddle with the database.
> *
> * Note that old_db->mtime is initialized to 0 in main(), and
> * so is guaranteed to be different than the stat() mtime the
> first
> * time this function is called.
> */
> if (old_db->mtime == HASH(statbuf.st_mtime,
> syscron_stat.st_mtime)) {
> - Debug(DLOAD, ("[%ld] spool dir mtime unch, no load
> needed.\n",
> - (long)getpid()))
> + Debug(DLOAD, ("[%ld] spool dirs mtime unch, no load
> needed.\n",
> + (long)getpid()))
> return;
> }
>
> @@ -77,28 +78,45 @@
> new_db.mtime = HASH(statbuf.st_mtime, syscron_stat.st_mtime);
> new_db.head = new_db.tail = NULL;
>
> - if (syscron_stat.st_mtime) {
> - process_crontab(ROOT_USER, NULL, SYSCRONTAB,
> &syscron_stat,
> - &new_db, old_db);
> - }
> -
> /* we used to keep this dir open all the time, for the sake of
> * efficiency. however, we need to close it in every fork, and
> * we fork a lot more often than the mtime of the dir changes.
> */
> - if (!(dir = opendir(SPOOL_DIR))) {
> - log_it("CRON", getpid(), "OPENDIR FAILED", SPOOL_DIR);
> + if (!(dir = opendir(SYSCRON_DIR))) {
> + log_it("CRON", getpid(), "OPENDIR FAILED", SYSCRON_DIR);
> return;
> }
>
> - while (NULL != (dp = readdir(dir))) {
> - char fname[MAXNAMLEN+1], tabname[MAXNAMLEN];
> + char fname[MAXNAMLEN+1], tabname[MAXNAMLEN];
>
> + while (NULL != (dp = readdir(dir))) {
> /* avoid file names beginning with ".". this is good
> * because we would otherwise waste two guaranteed calls
> * to getpwnam() for . and .., and also because user
> names
> * starting with a period are just too nasty to
> consider.
> */
> + if (dp->d_name[0] == '.')
> + continue;
> +
> + if (strlcpy(fname, dp->d_name, sizeof fname) >= sizeof
> fname)
> + continue; /* XXX log? */
> +
> + if (snprintf(tabname, sizeof tabname, "%s/%s",
> SYSCRON_DIR,
> + fname) >= sizeof(tabname))
> + continue; /* XXX log? */
> +
> + process_crontab(ROOT_USER, NULL, tabname, &syscron_stat,
> + &new_db, old_db);
> + }
> +
> + closedir(dir);
> +
> + if (!(dir = opendir(SPOOL_DIR))) {
> + log_it("CRON", getpid(), "OPENDIR FAILED", SPOOL_DIR);
> + return;
> + }
> +
> + while (NULL != (dp = readdir(dir))) {
> if (dp->d_name[0] == '.')
> continue;
>
>
> --- cron_original.8 Mon Apr 7 22:31:53 2014
> +++ cron.8 Tue Apr 8 16:12:30 2014
> @@ -71,9 +71,8 @@
> commands.
> Additionally,
> .Nm
> -checks the modification time on the system crontab file
> -.Pq Pa /etc/crontab ,
> -the crontab spool
> +checks the modification time on the crontab spool dirs
> +.Pq Pa /etc/cron.d,
> .Pq Pa /var/cron/tabs ,
> and the at spool
> .Pq Pa /var/cron/atjobs
> @@ -187,8 +186,8 @@
> .El
> .Sh FILES
> .Bl -tag -width "/var/cron/tabs/.sock" -compact
> -.It Pa /etc/crontab
> -system crontab file
> +.It Pa /etc/cron.d
> +system crontab directory
> .It Pa /var/cron/atjobs
> directory containing
> .Xr at 1
> @@ -217,6 +216,9 @@
> For user crontab files created by
> .Xr crontab 1 ,
> the mode must be 0400 or 0600.
> -If the system crontab file is used,
> -.Pa /etc/crontab
> -must not be writable by any user other than root.
> +If the system crontab spool dir is used,
> +.Pa /etc/cron.d
> +files inside must not be writable by any user other than root.
> +Files inside the system crontab directory
> +.Pa /etc/cron.d
> +will be ignored if they start by a dot (.).
>
>
> --- crontab_original.5 Tue Apr 8 16:33:54 2014
> +++ crontab.5 Tue Apr 8 16:22:27 2014
> @@ -279,7 +279,7 @@
> .El
> .Sh FILES
> .Bl -tag -width "/var/cron/tabs/<user>XXX" -compact
> -.It Pa /etc/crontab
> +.It Pa /etc/cron.d
> System crontab.
> .It Pa /var/cron/tabs/ Ns Aq Ar user
> User crontab.
