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From f33e40265d192e5d725e7b82e5f14f603e1fba48 Mon Sep 17 00:00:00 2001
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From: James Carter <jwcart2@gmail.com>
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Date: Wed, 19 Oct 2022 14:20:11 -0400
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Subject: [PATCH] python: Do not query the local database if the fcontext is
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non-local
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Vit Mojzis reports that an error message is produced when modifying
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a non-local fcontext.
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He gives the following example:
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# semanage fcontext -f f -m -t passwd_file_t /etc/security/opasswd
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libsemanage.dbase_llist_query: could not query record value (No such file or directory).
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When modifying an fcontext, the non-local database is checked for the
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key and then, if it is not found there, the local database is checked.
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If the key doesn't exist, then an error is raised. If the key exists
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then the local database is queried first and, if that fails, the non-
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local database is queried.
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The error is from querying the local database when the fcontext is in
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the non-local database.
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Instead, if the fcontext is in the non-local database, just query
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the non-local database. Only query the local database if the
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fcontext was found in it.
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Reported-by: Vit Mojzis <vmojzis@redhat.com>
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Signed-off-by: James Carter <jwcart2@gmail.com>
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---
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python/semanage/seobject.py | 15 +++++++++------
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1 file changed, 9 insertions(+), 6 deletions(-)
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diff --git a/python/semanage/seobject.py b/python/semanage/seobject.py
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index 70ebfd08..0e923a0d 100644
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--- a/python/semanage/seobject.py
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+++ b/python/semanage/seobject.py
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@@ -2490,16 +2490,19 @@ class fcontextRecords(semanageRecords):
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(rc, exists) = semanage_fcontext_exists(self.sh, k)
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if rc < 0:
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raise ValueError(_("Could not check if file context for %s is defined") % target)
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- if not exists:
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+ if exists:
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+ try:
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+ (rc, fcontext) = semanage_fcontext_query(self.sh, k)
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+ except OSError:
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+ raise ValueError(_("Could not query file context for %s") % target)
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+ else:
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(rc, exists) = semanage_fcontext_exists_local(self.sh, k)
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+ if rc < 0:
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+ raise ValueError(_("Could not check if file context for %s is defined") % target)
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if not exists:
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raise ValueError(_("File context for %s is not defined") % target)
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-
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- try:
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- (rc, fcontext) = semanage_fcontext_query_local(self.sh, k)
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- except OSError:
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try:
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- (rc, fcontext) = semanage_fcontext_query(self.sh, k)
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+ (rc, fcontext) = semanage_fcontext_query_local(self.sh, k)
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except OSError:
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raise ValueError(_("Could not query file context for %s") % target)
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--
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2.37.3
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