mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 08:25:20 +09:00
77 lines
3.0 KiB
C
77 lines
3.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "alloc-util.h"
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#include "glob-util.h"
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#include "log.h"
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#include "nspawn-util.h"
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#include "parse-util.h"
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#include "path-util.h"
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#include "string-util.h"
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int systemd_installation_has_version(const char *root, const char *minimal_version) {
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int r;
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/* Try to guess if systemd installation is later than the specified version. This
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* is hacky and likely to yield false negatives, particularly if the installation
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* is non-standard. False positives should be relatively rare.
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*/
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FOREACH_STRING(pattern,
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/* /lib works for systems without usr-merge, and for systems with a sane
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* usr-merge, where /lib is a symlink to /usr/lib. /usr/lib is necessary
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* for Gentoo which does a merge without making /lib a symlink.
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* Also support multiarch paths von Debian/Ubuntu; *-linux-* is a small
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* optimization based on the naming scheme of existing multiarch tuples.
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*/
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"/lib/systemd/libsystemd-shared-*.so",
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"/lib64/systemd/libsystemd-shared-*.so",
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"/usr/lib/*-linux-*/systemd/libsystemd-shared-*.so",
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"/usr/lib/systemd/libsystemd-shared-*.so",
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"/usr/lib64/systemd/libsystemd-shared-*.so") {
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_cleanup_strv_free_ char **names = NULL;
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_cleanup_free_ char *path = NULL;
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char *c;
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path = path_join(root, pattern);
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if (!path)
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return -ENOMEM;
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r = glob_extend(&names, path, 0);
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if (r == -ENOENT)
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continue;
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if (r < 0)
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return r;
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assert_se(c = endswith(path, "*.so"));
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*c = '\0'; /* truncate the glob part */
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STRV_FOREACH(name, names) {
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_cleanup_free_ char *bn = NULL;
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/* This is most likely to run only once, hence let's not optimize anything. */
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char *t, *t2;
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if (path_extract_filename(*name, &bn) < 0)
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continue;
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t = startswith(bn, "libsystemd-shared-");
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if (!t)
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continue;
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t2 = endswith(t, ".so");
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if (!t2)
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continue;
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*t2 = '\0';
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r = strverscmp_improved(t, minimal_version);
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log_debug("Found libsystemd shared at \"%s.so\", version %s (%s).",
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*name, t,
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r >= 0 ? "OK" : "too old");
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if (r >= 0)
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return true;
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}
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}
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return false;
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}
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