40 lines
1.2 KiB
Diff
40 lines
1.2 KiB
Diff
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From c5a699046f4a08a554d2da9121924fc80bf27cba Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
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Date: Mon, 10 May 2021 12:56:47 +0200
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Subject: [PATCH] libselinux: make selinux_status_open(3) reentrant
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Do not mmap the status page again if `selinux_status_open(3)` has already
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been called with success.
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`selinux_status_open(3)` might be called unintentionally multiple times,
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e.g. once to manually be able to call `selinux_status_getenforce(3)` and
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once indirectly through `selinux_check_access(3)`
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(since libselinux 3.2).
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Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
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---
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libselinux/src/sestatus.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/libselinux/src/sestatus.c b/libselinux/src/sestatus.c
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index 12b015e088ea..531a522c0f48 100644
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--- a/libselinux/src/sestatus.c
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+++ b/libselinux/src/sestatus.c
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@@ -282,6 +282,10 @@ int selinux_status_open(int fallback)
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long pagesize;
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uint32_t seqno;
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+ if (selinux_status != NULL) {
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+ return 0;
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+ }
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+
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if (!selinux_mnt) {
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errno = ENOENT;
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return -1;
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--
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2.32.0
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