Do not mmap the status page again if `selinux_status_open(3)` has already
been called with success.
`selinux_status_open(3)` might be called unintentionally multiple times,
e.g. once to manually be able to call `selinux_status_getenforce(3)` and
once indirectly through `selinux_check_access(3)`
(since libselinux 3.2).
Signed-off-by: Christian Göttsche <cgzones@xxxxxxxxxxxxxx>
---
libselinux/src/sestatus.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libselinux/src/sestatus.c b/libselinux/src/sestatus.c
index 12b015e0..531a522c 100644
--- a/libselinux/src/sestatus.c
+++ b/libselinux/src/sestatus.c
@@ -282,6 +282,10 @@ int selinux_status_open(int fallback)
long pagesize;
uint32_t seqno;
+ if (selinux_status != NULL) {
+ return 0;
+ }
+
if (!selinux_mnt) {
errno = ENOENT;
return -1;
--
2.31.1
