if (path_is_absolute(p) || !prefix)
return strdup(p);
- return strjoin(prefix, "/", p, NULL);
+ return strjoin(prefix, "/", p);
}
#endif // 0
if (!cwd)
return negative_errno();
- c = strjoin(cwd, "/", p, NULL);
+ c = strjoin(cwd, "/", p);
}
if (!c)
return -ENOMEM;
}
#endif // 0
-char **path_strv_resolve(char **l, const char *prefix) {
+char **path_strv_resolve(char **l, const char *root) {
char **s;
unsigned k = 0;
bool enomem = false;
+ int r;
if (strv_isempty(l))
return l;
* changes on failure. */
STRV_FOREACH(s, l) {
- char *t, *u;
_cleanup_free_ char *orig = NULL;
+ char *t, *u;
if (!path_is_absolute(*s)) {
free(*s);
continue;
}
- if (prefix) {
+ if (root) {
orig = *s;
- t = strappend(prefix, orig);
+ t = prefix_root(root, orig);
if (!t) {
enomem = true;
continue;
} else
t = *s;
- errno = 0;
- u = canonicalize_file_name(t);
- if (!u) {
- if (errno == ENOENT) {
- if (prefix) {
- u = orig;
- orig = NULL;
- free(t);
- } else
- u = t;
- } else {
+ r = chase_symlinks(t, root, 0, &u);
+ if (r == -ENOENT) {
+ if (root) {
+ u = orig;
+ orig = NULL;
free(t);
- if (errno == ENOMEM || errno == 0)
- enomem = true;
+ } else
+ u = t;
+ } else if (r < 0) {
+ free(t);
- continue;
- }
- } else if (prefix) {
+ if (r == -ENOMEM)
+ enomem = true;
+
+ continue;
+ } else if (root) {
char *x;
free(t);
- x = path_startswith(u, prefix);
+ x = path_startswith(u, root);
if (x) {
/* restore the slash if it was lost */
if (!startswith(x, "/"))
} else {
/* canonicalized path goes outside of
* prefix, keep the original path instead */
- free(u);
- u = orig;
- orig = NULL;
+ free_and_replace(u, orig);
}
} else
free(t);
return l;
}
-char **path_strv_resolve_uniq(char **l, const char *prefix) {
+char **path_strv_resolve_uniq(char **l, const char *root) {
if (strv_isempty(l))
return l;
- if (!path_strv_resolve(l, prefix))
+ if (!path_strv_resolve(l, root))
return NULL;
return strv_uniq(l);
assert(path);
assert(prefix);
+ /* Returns a pointer to the start of the first component after the parts matched by
+ * the prefix, iff
+ * - both paths are absolute or both paths are relative,
+ * and
+ * - each component in prefix in turn matches a component in path at the same position.
+ * An empty string will be returned when the prefix and path are equivalent.
+ *
+ * Returns NULL otherwise.
+ */
+
if ((path[0] == '/') != (prefix[0] == '/'))
return NULL;
return path_compare(a, b) == 0;
}
-bool path_equal_or_files_same(const char *a, const char *b) {
- return path_equal(a, b) || files_same(a, b) > 0;
+bool path_equal_or_files_same(const char *a, const char *b, int flags) {
+ return path_equal(a, b) || files_same(a, b, flags) > 0;
}
-#if 0 /// UNNEEDED by elogind
char* path_join(const char *root, const char *path, const char *rest) {
assert(path);
return strjoin(root, endswith(root, "/") ? "" : "/",
path[0] == '/' ? path+1 : path,
rest ? (endswith(path, "/") ? "" : "/") : NULL,
- rest && rest[0] == '/' ? rest+1 : rest,
- NULL);
+ rest && rest[0] == '/' ? rest+1 : rest);
else
return strjoin(path,
rest ? (endswith(path, "/") ? "" : "/") : NULL,
- rest && rest[0] == '/' ? rest+1 : rest,
- NULL);
+ rest && rest[0] == '/' ? rest+1 : rest);
}
int find_binary(const char *name, char **ret) {
if (!path_is_absolute(element))
continue;
- j = strjoin(element, "/", name, NULL);
+ j = strjoin(element, "/", name);
if (!j)
return -ENOMEM;
return last_error;
}
+#if 0 /// UNNEEDED by elogind
bool paths_check_timestamp(const char* const* paths, usec_t *timestamp, bool update) {
bool changed = false;
const char* const* i;
mkfs = strjoina("mkfs.", fstype);
return binary_is_good(mkfs);
}
+#endif // 0
char *prefix_root(const char *root, const char *path) {
char *n, *p;
return n;
}
+#if 0 /// UNNEEDED by elogind
int parse_path_argument_and_warn(const char *path, bool suppress_root, char **arg) {
char *p;
int r;
if (isempty(p))
return false;
- if (streq(p, "."))
- return false;
-
- if (streq(p, ".."))
+ if (dot_or_dot_dot(p))
return false;
e = strchrnul(p, '/');
if (isempty(p))
return false;
- if (streq(p, "..") || startswith(p, "../") || endswith(p, "/..") || strstr(p, "/../"))
+ if (dot_or_dot_dot(p))
+ return false;
+
+ if (startswith(p, "../") || endswith(p, "/..") || strstr(p, "/../"))
return false;
if (strlen(p)+1 > PATH_MAX)
return false;
/* The following two checks are not really dangerous, but hey, they still are confusing */
- if (streq(p, ".") || startswith(p, "./") || endswith(p, "/.") || strstr(p, "/./"))
+ if (startswith(p, "./") || endswith(p, "/.") || strstr(p, "/./"))
return false;
if (strstr(p, "//"))
/* Returns true on paths that refer to a device, either in
* sysfs or in /dev */
- return
- path_startswith(path, "/dev/") ||
- path_startswith(path, "/sys/");
+ return path_startswith(path, "/dev/") ||
+ path_startswith(path, "/sys/");
+}
+
+bool is_deviceallow_pattern(const char *path) {
+ return path_startswith(path, "/dev/") ||
+ startswith(path, "block-") ||
+ startswith(path, "char-");
+}
+
+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;
}
#endif // 0
+
+bool dot_or_dot_dot(const char *path) {
+ if (!path)
+ return false;
+ if (path[0] != '.')
+ return false;
+ if (path[1] == 0)
+ return true;
+ if (path[1] != '.')
+ return false;
+
+ return path[2] == 0;
+}