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From 9bf63bb85d4d2cab73181ee1d8d0b07961ce4a80 Mon Sep 17 00:00:00 2001
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From: Vit Mojzis <vmojzis@redhat.com>
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Date: Thu, 17 Feb 2022 14:14:15 +0100
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Subject: [PATCH] libselinux: Strip spaces before values in config
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Spaces before values in /etc/selinux/config should be ignored just as
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spaces after them are.
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E.g. "SELINUXTYPE= targeted" should be a valid value.
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Fixes:
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# sed -i 's/^SELINUXTYPE=/SELINUXTYPE= /g' /etc/selinux/config
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# dnf install <any_package>
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...
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RPM: error: selabel_open: (/etc/selinux/ targeted/contexts/files/file_contexts) No such file or directory
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RPM: error: Plugin selinux: hook tsm_pre failed
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...
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Error: Could not run transaction.
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Signed-off-by: Vit Mojzis <vmojzis@redhat.com>
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---
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libselinux/src/selinux_config.c | 17 +++++++++++++----
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1 file changed, 13 insertions(+), 4 deletions(-)
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diff --git a/libselinux/src/selinux_config.c b/libselinux/src/selinux_config.c
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index b06cb63b..0892b87c 100644
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--- a/libselinux/src/selinux_config.c
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+++ b/libselinux/src/selinux_config.c
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@@ -91,6 +91,7 @@ int selinux_getenforcemode(int *enforce)
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FILE *cfg = fopen(SELINUXCONFIG, "re");
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if (cfg) {
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char *buf;
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+ char *tag;
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int len = sizeof(SELINUXTAG) - 1;
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buf = malloc(selinux_page_size);
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if (!buf) {
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@@ -100,21 +101,24 @@ int selinux_getenforcemode(int *enforce)
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while (fgets_unlocked(buf, selinux_page_size, cfg)) {
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if (strncmp(buf, SELINUXTAG, len))
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continue;
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+ tag = buf+len;
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+ while (isspace(*tag))
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+ tag++;
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if (!strncasecmp
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- (buf + len, "enforcing", sizeof("enforcing") - 1)) {
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+ (tag, "enforcing", sizeof("enforcing") - 1)) {
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*enforce = 1;
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ret = 0;
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break;
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} else
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if (!strncasecmp
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- (buf + len, "permissive",
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+ (tag, "permissive",
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sizeof("permissive") - 1)) {
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*enforce = 0;
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ret = 0;
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break;
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} else
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if (!strncasecmp
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- (buf + len, "disabled",
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+ (tag, "disabled",
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sizeof("disabled") - 1)) {
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*enforce = -1;
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ret = 0;
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@@ -177,7 +181,10 @@ static void init_selinux_config(void)
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if (!strncasecmp(buf_p, SELINUXTYPETAG,
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sizeof(SELINUXTYPETAG) - 1)) {
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- type = strdup(buf_p + sizeof(SELINUXTYPETAG) - 1);
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+ buf_p += sizeof(SELINUXTYPETAG) - 1;
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+ while (isspace(*buf_p))
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+ buf_p++;
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+ type = strdup(buf_p);
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if (!type)
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return;
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end = type + strlen(type) - 1;
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@@ -199,6 +206,8 @@ static void init_selinux_config(void)
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} else if (!strncmp(buf_p, REQUIRESEUSERS,
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sizeof(REQUIRESEUSERS) - 1)) {
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value = buf_p + sizeof(REQUIRESEUSERS) - 1;
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+ while (isspace(*value))
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+ value++;
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intptr = &require_seusers;
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} else {
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continue;
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--
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2.35.3
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