svn commit: r357565 - in head/usr.sbin/cron: cron crontab
Kyle Evans
kevans at FreeBSD.org
Wed Feb 5 04:35:55 UTC 2020
Author: kevans
Date: Wed Feb 5 04:35:54 2020
New Revision: 357565
URL: https://svnweb.freebsd.org/changeset/base/357565
Log:
cron(8): set the environment variables of the user and/or login class
Prior to processing environment variable set in the crontab file as those
should be of higher precedent, pull in the user or login class environment.
This is another supporting feature for allowing one to configure system-wide
settings that may affect both regular cron jobs as well as services.
This is the final part of D21481.
Submitted by: Andrew Gierth <andrew_tao173.riddles.org.uk>
Modified:
head/usr.sbin/cron/cron/do_command.c
head/usr.sbin/cron/crontab/crontab.5
Modified: head/usr.sbin/cron/cron/do_command.c
==============================================================================
--- head/usr.sbin/cron/cron/do_command.c Wed Feb 5 04:32:49 2020 (r357564)
+++ head/usr.sbin/cron/cron/do_command.c Wed Feb 5 04:35:54 2020 (r357565)
@@ -43,6 +43,8 @@ static void child_process(entry *, user *),
static WAIT_T wait_on_child(PID_T, const char *);
+extern char *environ;
+
void
do_command(e, u)
entry *e;
@@ -285,9 +287,11 @@ child_process(e, u)
*/
do_univ(u);
+ environ = NULL;
+
# if defined(LOGIN_CAP)
- /* Set user's entire context, but skip the environment
- * as cron provides a separate interface for this
+ /* Set user's entire context, but note that PATH will
+ * be overridden later
*/
if ((pwd = getpwnam(usernm)) == NULL)
pwd = getpwuid(e->uid);
@@ -299,7 +303,7 @@ child_process(e, u)
}
if (pwd &&
setusercontext(lc, pwd, e->uid,
- LOGIN_SETALL & ~(LOGIN_SETPATH|LOGIN_SETENV)) == 0)
+ LOGIN_SETALL) == 0)
(void) endpwent();
else {
/* fall back to the old method */
@@ -342,7 +346,19 @@ child_process(e, u)
*/
{
char *shell = env_get("SHELL", e->envp);
+ char **p;
+ /* Apply the environment from the entry, overriding existing
+ * values (this will always set PATH, LOGNAME, etc.) putenv
+ * should not fail unless malloc does.
+ */
+ for (p = e->envp; *p; ++p) {
+ if (putenv(*p) != 0) {
+ warn("putenv");
+ _exit(ERROR_EXIT);
+ }
+ }
+
# if DEBUGGING
if (DebugFlags & DTEST) {
fprintf(stderr,
@@ -352,9 +368,8 @@ child_process(e, u)
_exit(OK_EXIT);
}
# endif /*DEBUGGING*/
- execle(shell, shell, "-c", e->cmd, (char *)NULL,
- e->envp);
- warn("execle: couldn't exec `%s'", shell);
+ execl(shell, shell, "-c", e->cmd, (char *)NULL);
+ warn("execl: couldn't exec `%s'", shell);
_exit(ERROR_EXIT);
}
break;
Modified: head/usr.sbin/cron/crontab/crontab.5
==============================================================================
--- head/usr.sbin/cron/crontab/crontab.5 Wed Feb 5 04:32:49 2020 (r357564)
+++ head/usr.sbin/cron/crontab/crontab.5 Wed Feb 5 04:35:54 2020 (r357565)
@@ -17,7 +17,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd September 24, 2019
+.Dd January 19, 2020
.Dt CRONTAB 5
.Os
.Sh NAME
@@ -82,10 +82,18 @@ and
are set from the
.Pa /etc/passwd
line of the crontab's owner.
+In addition, the environment variables of the
+user's login class, with the exception of
+.Ev PATH ,
+will be set from
+.Pa /etc/login.conf.db
+and
+.Pa ~/.login_conf .
.Ev HOME ,
.Ev PATH
and
-.Ev SHELL
+.Ev SHELL ,
+and any variables set from the login class,
may be overridden by settings in the crontab;
.Ev LOGNAME
may not.
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