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/* 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) {
/* This is most likely to run only once, hence let's not optimize anything. */
char *t, *t2;
t = startswith(basename(*name), "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;
}
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