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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/nspawn/nspawn-util.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/nspawn/nspawn-util.c')
-rw-r--r--src/nspawn/nspawn-util.c76
1 files changed, 76 insertions, 0 deletions
diff --git a/src/nspawn/nspawn-util.c b/src/nspawn/nspawn-util.c
new file mode 100644
index 0000000..6c38489
--- /dev/null
+++ b/src/nspawn/nspawn-util.c
@@ -0,0 +1,76 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "glob-util.h"
+#include "log.h"
+#include "nspawn-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "string-util.h"
+
+int systemd_installation_has_version(const char *root, const char *minimal_version) {
+ int r;
+
+ /* Try to guess if systemd installation is later than the specified version. This
+ * is hacky and likely to yield false negatives, particularly if the installation
+ * is non-standard. False positives should be relatively rare.
+ */
+
+ FOREACH_STRING(pattern,
+ /* /lib works for systems without usr-merge, and for systems with a sane
+ * usr-merge, where /lib is a symlink to /usr/lib. /usr/lib is necessary
+ * for Gentoo which does a merge without making /lib a symlink.
+ * Also support multiarch paths von Debian/Ubuntu; *-linux-* is a small
+ * optimization based on the naming scheme of existing multiarch tuples.
+ */
+ "/lib/systemd/libsystemd-shared-*.so",
+ "/lib64/systemd/libsystemd-shared-*.so",
+ "/usr/lib/*-linux-*/systemd/libsystemd-shared-*.so",
+ "/usr/lib/systemd/libsystemd-shared-*.so",
+ "/usr/lib64/systemd/libsystemd-shared-*.so") {
+
+ _cleanup_strv_free_ char **names = NULL;
+ _cleanup_free_ char *path = NULL;
+ char *c;
+
+ path = path_join(root, pattern);
+ if (!path)
+ return -ENOMEM;
+
+ r = glob_extend(&names, path, 0);
+ if (r == -ENOENT)
+ continue;
+ if (r < 0)
+ return r;
+
+ assert_se(c = endswith(path, "*.so"));
+ *c = '\0'; /* truncate the glob part */
+
+ STRV_FOREACH(name, names) {
+ _cleanup_free_ char *bn = NULL;
+ /* This is most likely to run only once, hence let's not optimize anything. */
+ char *t, *t2;
+
+ if (path_extract_filename(*name, &bn) < 0)
+ continue;
+
+ t = startswith(bn, "libsystemd-shared-");
+ if (!t)
+ continue;
+
+ t2 = endswith(t, ".so");
+ if (!t2)
+ continue;
+ *t2 = '\0';
+
+ r = strverscmp_improved(t, minimal_version);
+ log_debug("Found libsystemd shared at \"%s.so\", version %s (%s).",
+ *name, t,
+ r >= 0 ? "OK" : "too old");
+ if (r >= 0)
+ return true;
+ }
+ }
+
+ return false;
+}