-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
#undef basename
#include "alloc-util.h"
+#include "extract-word.h"
#include "fs-util.h"
#include "log.h"
#include "macro.h"
#include "missing.h"
#include "path-util.h"
-#include "extract-word.h"
-#include "time-util.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
+#include "time-util.h"
bool path_is_absolute(const char *p) {
return p[0] == '/';
else {
_cleanup_free_ char *cwd = NULL;
- cwd = get_current_dir_name();
- if (!cwd)
- return -errno;
+ cwd = get_current_dir_name();
+ if (!cwd)
+ return negative_errno();
c = strjoin(cwd, "/", p, NULL);
}
return 0;
}
- /**
- * Plain getenv, not secure_getenv, because we want
- * to actually allow the user to pick the binary.
- */
+ /**
+ * Plain getenv, not secure_getenv, because we want
+ * to actually allow the user to pick the binary.
+ */
p = getenv("PATH");
if (!p)
p = DEFAULT_PATH;
break;
if (!path_is_absolute(element))
- continue;
+ continue;
j = strjoin(element, "/", name, NULL);
if (!j)
if (r < 0)
return r;
- return !path_equal(d, "true") &&
- !path_equal(d, "/bin/true") &&
- !path_equal(d, "/usr/bin/true") &&
- !path_equal(d, "/dev/null");
+ return !PATH_IN_SET(d, "true"
+ "/bin/true",
+ "/usr/bin/true",
+ "/dev/null");
}
int fsck_exists(const char *fstype) {
return ret;
}
-bool hidden_file_allow_backup(const char *filename) {
- assert(filename);
-
- return
- filename[0] == '.' ||
- streq(filename, "lost+found") ||
- streq(filename, "aquota.user") ||
- streq(filename, "aquota.group") ||
- endswith(filename, ".rpmnew") ||
- endswith(filename, ".rpmsave") ||
- endswith(filename, ".rpmorig") ||
- endswith(filename, ".dpkg-old") ||
- endswith(filename, ".dpkg-new") ||
- endswith(filename, ".dpkg-tmp") ||
- endswith(filename, ".dpkg-dist") ||
- endswith(filename, ".dpkg-bak") ||
- endswith(filename, ".dpkg-backup") ||
- endswith(filename, ".dpkg-remove") ||
- endswith(filename, ".swp");
-}
+bool hidden_or_backup_file(const char *filename) {
+ const char *p;
-bool hidden_file(const char *filename) {
assert(filename);
- if (endswith(filename, "~"))
+ if (filename[0] == '.' ||
+ streq(filename, "lost+found") ||
+ streq(filename, "aquota.user") ||
+ streq(filename, "aquota.group") ||
+ endswith(filename, "~"))
return true;
- return hidden_file_allow_backup(filename);
+ p = strrchr(filename, '.');
+ if (!p)
+ return false;
+
+ /* Please, let's not add more entries to the list below. If external projects think it's a good idea to come up
+ * with always new suffixes and that everybody else should just adjust to that, then it really should be on
+ * them. Hence, in future, let's not add any more entries. Instead, let's ask those packages to instead adopt
+ * one of the generic suffixes/prefixes for hidden files or backups, possibly augmented with an additional
+ * string. Specifically: there's now:
+ *
+ * The generic suffixes "~" and ".bak" for backup files
+ * The generic prefix "." for hidden files
+ *
+ * Thus, if a new package manager "foopkg" wants its own set of ".foopkg-new", ".foopkg-old", ".foopkg-dist"
+ * or so registered, let's refuse that and ask them to use ".foopkg.new", ".foopkg.old" or ".foopkg~" instead.
+ */
+
+ return STR_IN_SET(p + 1,
+ "rpmnew",
+ "rpmsave",
+ "rpmorig",
+ "dpkg-old",
+ "dpkg-new",
+ "dpkg-tmp",
+ "dpkg-dist",
+ "dpkg-bak",
+ "dpkg-backup",
+ "dpkg-remove",
+ "ucf-new",
+ "ucf-old",
+ "ucf-dist",
+ "swp",
+ "bak",
+ "old",
+ "new");
}
#if 0 /// UNNEEDED by elogind
path_startswith(path, "/sys/");
}
#endif // 0
+
+int systemd_installation_has_version(const char *root, unsigned minimal_version) {
+ const char *pattern;
+ 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.
+ */
+
+ NULSTR_FOREACH(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.
+ */
+ "lib/systemd/libsystemd-shared-*.so\0"
+ "usr/lib/systemd/libsystemd-shared-*.so\0") {
+
+ _cleanup_strv_free_ char **names = NULL;
+ _cleanup_free_ char *path = NULL;
+ char *c, **name;
+
+ path = prefix_root(root, pattern);
+ if (!path)
+ return -ENOMEM;
+
+ r = glob_extend(&names, path);
+ 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;
+ unsigned version;
+
+ t = startswith(*name, path);
+ if (!t)
+ continue;
+
+ t2 = endswith(t, ".so");
+ if (!t2)
+ continue;
+
+ t2[0] = '\0'; /* truncate the suffix */
+
+ r = safe_atou(t, &version);
+ if (r < 0) {
+ log_debug_errno(r, "Found libsystemd shared at \"%s.so\", but failed to parse version: %m", *name);
+ continue;
+ }
+
+ log_debug("Found libsystemd shared at \"%s.so\", version %u (%s).",
+ *name, version,
+ version >= minimal_version ? "OK" : "too old");
+ if (version >= minimal_version)
+ return true;
+ }
+ }
+
+ return false;
+}
~ianmdlvl / elogind.git / blobdiff