libsemanage/0005-libsemanage-clean-up-semanage_direct_commit-a-bit.patch

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From b3c63ad0f9c5c35d80fabeb0ca7abd86f34aad0e Mon Sep 17 00:00:00 2001
From: Ondrej Mosnacek <omosnace@redhat.com>
Date: Thu, 3 Feb 2022 17:53:25 +0100
Subject: [PATCH] libsemanage: clean up semanage_direct_commit() a bit
Do some minor cosmetic cleanup, mainly to eliminate the 'rebuilt' goto
label.
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
---
libsemanage/src/direct_api.c | 91 ++++++++++++++++++------------------
1 file changed, 45 insertions(+), 46 deletions(-)
diff --git a/libsemanage/src/direct_api.c b/libsemanage/src/direct_api.c
index aa2bfcf35016..bed1e1eda78f 100644
--- a/libsemanage/src/direct_api.c
+++ b/libsemanage/src/direct_api.c
@@ -994,6 +994,16 @@ cleanup:
return status;
}
+/* Files that must exist in order to skip policy rebuild. */
+static const int semanage_computed_files[] = {
+ SEMANAGE_STORE_KERNEL,
+ SEMANAGE_STORE_FC,
+ SEMANAGE_STORE_SEUSERS,
+ SEMANAGE_LINKED,
+ SEMANAGE_SEUSERS_LINKED,
+ SEMANAGE_USERS_EXTRA_LINKED
+};
+
/* Copies a file from src to dst. If dst already exists then
* overwrite it. If source doesn't exist then return success.
* Returns 0 on success, -1 on error. */
@@ -1053,6 +1063,14 @@ static int semanage_direct_commit(semanage_handle_t * sh)
seusers_modified = seusers->dtable->is_modified(seusers->dbase);
fcontexts_modified = fcontexts->dtable->is_modified(fcontexts->dbase);
+ /* Before we do anything else, flush the join to its component parts.
+ * This *does not* flush to disk automatically */
+ if (users->dtable->is_modified(users->dbase)) {
+ retval = users->dtable->flush(sh, users->dbase);
+ if (retval < 0)
+ goto cleanup;
+ }
+
/* Rebuild if explicitly requested or any module changes occurred. */
do_rebuild = sh->do_rebuild | sh->modules_modified;
@@ -1119,14 +1137,6 @@ static int semanage_direct_commit(semanage_handle_t * sh)
}
}
- /* Before we do anything else, flush the join to its component parts.
- * This *does not* flush to disk automatically */
- if (users->dtable->is_modified(users->dbase)) {
- retval = users->dtable->flush(sh, users->dbase);
- if (retval < 0)
- goto cleanup;
- }
-
/*
* This is for systems that have already migrated with an older version
* of semanage_migrate_store. The older version did not copy
@@ -1135,48 +1145,20 @@ static int semanage_direct_commit(semanage_handle_t * sh)
* in order to skip re-linking are present; otherwise, we force
* a rebuild.
*/
- if (!do_rebuild) {
- int files[] = {SEMANAGE_STORE_KERNEL,
- SEMANAGE_STORE_FC,
- SEMANAGE_STORE_SEUSERS,
- SEMANAGE_LINKED,
- SEMANAGE_SEUSERS_LINKED,
- SEMANAGE_USERS_EXTRA_LINKED};
-
- for (i = 0; i < (int) ARRAY_SIZE(files); i++) {
- path = semanage_path(SEMANAGE_TMP, files[i]);
- if (stat(path, &sb) != 0) {
- if (errno != ENOENT) {
- ERR(sh, "Unable to access %s: %s\n", path, strerror(errno));
- retval = -1;
- goto cleanup;
- }
-
- do_rebuild = 1;
- goto rebuild;
+ for (i = 0; !do_rebuild && i < (int)ARRAY_SIZE(semanage_computed_files); i++) {
+ path = semanage_path(SEMANAGE_TMP, semanage_computed_files[i]);
+ if (stat(path, &sb) != 0) {
+ if (errno != ENOENT) {
+ ERR(sh, "Unable to access %s: %s\n", path, strerror(errno));
+ retval = -1;
+ goto cleanup;
}
+
+ do_rebuild = 1;
+ break;
}
}
-rebuild:
- /*
- * Now that we know whether or not a rebuild is required,
- * we can determine what else needs to be done.
- * We need to write the kernel policy if we are rebuilding
- * or if any other policy component that lives in the kernel
- * policy has been modified.
- * We need to install the policy files if any of the managed files
- * that live under /etc/selinux (kernel policy, seusers, file contexts)
- * will be modified.
- */
- do_write_kernel = do_rebuild | ports_modified | ibpkeys_modified |
- ibendports_modified |
- bools->dtable->is_modified(bools->dbase) |
- ifaces->dtable->is_modified(ifaces->dbase) |
- nodes->dtable->is_modified(nodes->dbase) |
- users->dtable->is_modified(users_base->dbase);
- do_install = do_write_kernel | seusers_modified | fcontexts_modified;
-
/*
* If there were policy changes, or explicitly requested, or
* any required files are missing, rebuild the policy.
@@ -1330,6 +1312,23 @@ rebuild:
}
}
+ /*
+ * Determine what else needs to be done.
+ * We need to write the kernel policy if we are rebuilding
+ * or if any other policy component that lives in the kernel
+ * policy has been modified.
+ * We need to install the policy files if any of the managed files
+ * that live under /etc/selinux (kernel policy, seusers, file contexts)
+ * will be modified.
+ */
+ do_write_kernel = do_rebuild | ports_modified | ibpkeys_modified |
+ ibendports_modified |
+ bools->dtable->is_modified(bools->dbase) |
+ ifaces->dtable->is_modified(ifaces->dbase) |
+ nodes->dtable->is_modified(nodes->dbase) |
+ users->dtable->is_modified(users_base->dbase);
+ do_install = do_write_kernel | seusers_modified | fcontexts_modified;
+
/* Attach our databases to the policydb we just created or loaded. */
dbase_policydb_attach((dbase_policydb_t *) pusers_base->dbase, out);
dbase_policydb_attach((dbase_policydb_t *) pports->dbase, out);
--
2.34.1