[PATCH v2] libselinux: Strip spaces before values in config
Spaces before values in /etc/selinux/config should be ignored just as
spaces after them are.
E.g. "SELINUXTYPE= targeted" should be a valid value.
Fixes:
# sed -i 's/^SELINUXTYPE=/SELINUXTYPE= /g' /etc/selinux/config
# dnf install <any_package>
...
RPM: error: selabel_open: (/etc/selinux/ targeted/contexts/files/file_contexts) No such
file or directory
RPM: error: Plugin selinux: hook tsm_pre failed
...
Error: Could not run transaction.
Signed-off-by: Vit Mojzis <vmojzis(a)redhat.com>
---
libselinux/src/selinux_config.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/libselinux/src/selinux_config.c b/libselinux/src/selinux_config.c
index 97f81a8b..d2e49ee1 100644
--- a/libselinux/src/selinux_config.c
+++ b/libselinux/src/selinux_config.c
@@ -92,6 +92,7 @@ int selinux_getenforcemode(int *enforce)
FILE *cfg = fopen(SELINUXCONFIG, "re");
if (cfg) {
char *buf;
+ char *tag;
int len = sizeof(SELINUXTAG) - 1;
buf = malloc(selinux_page_size);
if (!buf) {
@@ -101,21 +102,24 @@ int selinux_getenforcemode(int *enforce)
while (fgets_unlocked(buf, selinux_page_size, cfg)) {
if (strncmp(buf, SELINUXTAG, len))
continue;
+ tag = buf+len;
+ while (isspace(*tag))
+ tag++;
if (!strncasecmp
- (buf + len, "enforcing", sizeof("enforcing") - 1)) {
+ (tag, "enforcing", sizeof("enforcing") - 1)) {
*enforce = 1;
ret = 0;
break;
} else
if (!strncasecmp
- (buf + len, "permissive",
+ (tag, "permissive",
sizeof("permissive") - 1)) {
*enforce = 0;
ret = 0;
break;
} else
if (!strncasecmp
- (buf + len, "disabled",
+ (tag, "disabled",
sizeof("disabled") - 1)) {
*enforce = -1;
ret = 0;
@@ -176,7 +180,10 @@ static void init_selinux_config(void)
if (!strncasecmp(buf_p, SELINUXTYPETAG,
sizeof(SELINUXTYPETAG) - 1)) {
- type = strdup(buf_p + sizeof(SELINUXTYPETAG) - 1);
+ buf_p += sizeof(SELINUXTYPETAG) - 1;
+ while (isspace(*buf_p))
+ buf_p++;
+ type = strdup(buf_p);
if (!type) {
free(line_buf);
fclose(fp);
@@ -199,6 +206,8 @@ static void init_selinux_config(void)
} else if (!strncmp(buf_p, REQUIRESEUSERS,
sizeof(REQUIRESEUSERS) - 1)) {
value = buf_p + sizeof(REQUIRESEUSERS) - 1;
+ while (isspace(*value))
+ value++;
intptr = &require_seusers;
} else {
continue;
--
2.30.2