diff -up at-3.1.12/config.h.in.selinux at-3.1.12/config.h.in
--- at-3.1.12/config.h.in.selinux 2009-12-02 16:32:19.469228959 +0100
+++ at-3.1.12/config.h.in 2009-12-02 16:32:57.706966488 +0100
@@ -71,6 +71,9 @@
/* Define if you are building with_pam */
#undef WITH_PAM
+/* Define if you are building with_selinux */
+#undef WITH_SELINUX
+
/* Define to 1 if you have the `pstat_getdynamic' function. */
#undef HAVE_PSTAT_GETDYNAMIC
diff -up at-3.1.12/configure.ac.selinux at-3.1.12/configure.ac
--- at-3.1.12/configure.ac.selinux 2009-12-02 16:31:15.323246019 +0100
+++ at-3.1.12/configure.ac 2009-12-02 16:32:01.425966844 +0100
@@ -266,5 +266,13 @@ AC_ARG_WITH(daemon_groupname,
)
AC_SUBST(DAEMON_GROUPNAME)
+AC_ARG_WITH(selinux,
+[ --with-selinux Define to run with selinux],
+AC_DEFINE(WITH_SELINUX),
+)
+AC_CHECK_LIB(selinux, is_selinux_enabled, SELINUXLIB=-lselinux)
+AC_SUBST(SELINUXLIB)
+AC_SUBST(WITH_SELINUX)
+
AC_CONFIG_FILES(Makefile atrun atd.8 atrun.8 at.1 batch)
AC_OUTPUT
diff -up at-3.1.12/Makefile.in.selinux at-3.1.12/Makefile.in
--- at-3.1.12/Makefile.in.selinux 2009-12-02 16:30:11.923216529 +0100
+++ at-3.1.12/Makefile.in 2009-12-02 16:30:57.949215706 +0100
@@ -39,6 +39,7 @@ LIBS = @LIBS@
LIBOBJS = @LIBOBJS@
INSTALL = @INSTALL@
PAMLIB = @PAMLIB@
+SELINUXLIB = @SELINUXLIB@
CLONES = atq atrm
ATOBJECTS = at.o panic.o perm.o posixtm.o y.tab.o lex.yy.o
diff -up at-3.1.12/atd.c.selinux at-3.1.12/atd.c
--- at-3.1.12/atd.c.selinux 2009-12-03 13:03:57.182284669 +0100
+++ at-3.1.12/atd.c 2009-12-03 13:07:20.542272874 +0100
@@ -83,6 +83,14 @@
#include "getloadavg.h"
#endif
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#include <selinux/get_context_list.h>
+int selinux_enabled=0;
+#include <selinux/flask.h>
+#include <selinux/av_permissions.h>
+#endif
+
#ifndef LOG_ATD
#define LOG_ATD LOG_DAEMON
#endif
@@ -202,6 +210,68 @@ myfork()
#define ATD_MAIL_NAME "mailx"
#endif
+#ifdef WITH_SELINUX
+static int set_selinux_context(const char *name, const char *filename) {
+ security_context_t user_context=NULL;
+ security_context_t file_context=NULL;
+ struct av_decision avd;
+ int retval=-1;
+ char *seuser=NULL;
+ char *level=NULL;
+
+ if (getseuserbyname(name, &seuser, &level) == 0) {
+ retval=get_default_context_with_level(seuser, level, NULL, &user_context);
+ free(seuser);
+ free(level);
+ if (retval) {
+ if (security_getenforce()==1) {
+ perr("execle: couldn't get security context for user %s\n", name);
+ } else {
+ syslog(LOG_ERR, "execle: couldn't get security context for user %s\n", name);
+ return -1;
+ }
+ }
+ }
+
+ /*
+ * Since crontab files are not directly executed,
+ * crond must ensure that the crontab file has
+ * a context that is appropriate for the context of
+ * the user cron job. It performs an entrypoint
+ * permission check for this purpose.
+ */
+ if (fgetfilecon(STDIN_FILENO, &file_context) < 0)
+ perr("fgetfilecon FAILED %s", filename);
+
+ retval = security_compute_av(user_context,
+ file_context,
+ SECCLASS_FILE,
+ FILE__ENTRYPOINT,
+ &avd);
+ freecon(file_context);
+ if (retval || ((FILE__ENTRYPOINT & avd.allowed) != FILE__ENTRYPOINT)) {
+ if (security_getenforce()==1) {
+ perr("Not allowed to set exec context to %s for user %s\n", user_context,name);
+ } else {
+ syslog(LOG_ERR, "Not allowed to set exec context to %s for user %s\n", user_context,name);
+ retval = -1;
+ goto err;
+ }
+ }
+ if (setexeccon(user_context) < 0) {
+ if (security_getenforce()==1) {
+ perr("Could not set exec context to %s for user %s\n", user_context,name);
+ retval = -1;
+ } else {
+ syslog(LOG_ERR, "Could not set exec context to %s for user %s\n", user_context,name);
+ }
+ }
+ err:
+ freecon(user_context);
+ return 0;
+}
+#endif
+
static void
run_file(const char *filename, uid_t uid, gid_t gid)
{
@@ -452,6 +522,12 @@ run_file(const char *filename, uid_t uid
perr("Cannot reset signal handler to default");
chdir("/");
+#ifdef WITH_SELINUX
+ if (selinux_enabled > 0) {
+ if (set_selinux_context(pentry->pw_name, filename) < 0)
+ perr("SELinux Failed to set context\n");
+ }
+#endif
if (execle("/bin/sh", "sh", (char *) NULL, nenvp) != 0)
perr("Exec failed for /bin/sh");
@@ -774,6 +850,10 @@ main(int argc, char *argv[])
struct passwd *pwe;
struct group *ge;
+#ifdef WITH_SELINUX
+ selinux_enabled=is_selinux_enabled();
+#endif
+
/* We don't need root privileges all the time; running under uid and gid
* daemon is fine.
*/