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setsebool: support use of -P on SELinux-disabled hosts 

As reported in #123, setsebool immediately exits with an error if
SELinux is disabled, preventing its use for setting boolean persistent
values.  In contrast, semanage boolean -m works on SELinux-disabled
hosts.  Change setsebool so that it can be used with the -P option
(persistent changes) even if SELinux is disabled.  In the SELinux-disabled
case, skip setting of active boolean values, but set the persistent value
in the policy store.  Policy reload is automatically disabled by libsemanage
when SELinux is disabled, so we only need to call semanage_set_reload()
if -N was used.

Fixes: https://github.com/SELinuxProject/selinux/issues/123
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
This commit is contained in:
Stephen Smalley 2019-01-10 10:24:53 -05:00 committed by stephensmalley
parent 9dad37e37a
commit c78f9c355f
1 changed files with 6 additions and 9 deletions
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15
policycoreutils/setsebool/setsebool.c
View File

@ -18,7 +18,7 @@
#include <errno.h>
int permanent = 0;
int reload = 1;
int no_reload = 0;
int verbose = 0;
int setbool(char **list, size_t start, size_t end);
@ -38,11 +38,6 @@ int main(int argc, char **argv)
if (argc < 2)
usage();
if (is_selinux_enabled() <= 0) {
fputs("setsebool: SELinux is disabled.\n", stderr);
return 1;
}
while (1) {
clflag = getopt(argc, argv, "PNV");
if (clflag == -1)
@ -53,7 +48,7 @@ int main(int argc, char **argv)
permanent = 1;
break;
case 'N':
reload = 0;
no_reload = 1;
break;
case 'V':
verbose = 1;
@ -130,6 +125,7 @@ static int semanage_set_boolean_list(size_t boolcnt,
semanage_bool_key_t *bool_key = NULL;
int managed;
int result;
int enabled = is_selinux_enabled();
handle = semanage_handle_create();
if (handle == NULL) {
@ -191,7 +187,7 @@ static int semanage_set_boolean_list(size_t boolcnt,
boolean) < 0)
goto err;
if (semanage_bool_set_active(handle, bool_key, boolean) < 0) {
if (enabled && semanage_bool_set_active(handle, bool_key, boolean) < 0) {
fprintf(stderr, "Failed to change boolean %s: %m\n",
boollist[j].name);
goto err;
@ -202,7 +198,8 @@ static int semanage_set_boolean_list(size_t boolcnt,
boolean = NULL;
}
semanage_set_reload(handle, reload);
if (no_reload)
semanage_set_reload(handle, 0);
if (semanage_commit(handle) < 0)
goto err;