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-rw-r--r--src/basic/time-util.c33
1 files changed, 32 insertions, 1 deletions
diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index e278196c90..3d8d5d7568 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -26,6 +26,7 @@
#include "util.h"
#include "time-util.h"
+#include "path-util.h"
#include "strv.h"
usec_t now(clockid_t clock_id) {
@@ -971,7 +972,10 @@ bool timezone_is_valid(const char *name) {
const char *p, *t;
struct stat st;
- if (!name || *name == 0 || *name == '/')
+ if (isempty(name))
+ return false;
+
+ if (name[0] == '/')
return false;
for (p = name; *p; p++) {
@@ -1021,3 +1025,30 @@ clockid_t clock_boottime_or_monotonic(void) {
return clock;
}
+
+int get_timezone(char **timezone) {
+ _cleanup_free_ char *t = NULL;
+ const char *e;
+ char *z;
+ int r;
+
+ r = readlink_malloc("/etc/localtime", &t);
+ if (r < 0)
+ return r; /* returns EINVAL if not a symlink */
+
+ e = path_startswith(t, "/usr/share/zoneinfo/");
+ if (!e)
+ e = path_startswith(t, "../usr/share/zoneinfo/");
+ if (!e)
+ return -EINVAL;
+
+ if (!timezone_is_valid(e))
+ return -EINVAL;
+
+ z = strdup(e);
+ if (!z)
+ return -ENOMEM;
+
+ *timezone = z;
+ return 0;
+}