logind: support for hybrid sleep (i.e. suspend+hibernate at the same time)

[elogind.git] / src / shared / util.c

diff --git a/src/shared/util.c b/src/shared/util.c
index db8e75b6280635356ee69b24ea66253a1617fec0..2d4a4c1102bd2f082c247f2c38dc27e873321210 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -5691,6 +5691,30 @@ int can_sleep(const char *type) {
         return false;
 }
 
         return false;
 }
 

+int can_sleep_disk(const char *type) {
+        char *w, *state;
+        size_t l, k;
+        int r;
+        _cleanup_free_ char *p = NULL;
+
+        assert(type);
+
+        r = read_one_line_file("/sys/power/disk", &p);
+        if (r < 0)
+                return r == -ENOENT ? 0 : r;
+
+        k = strlen(type);
+        FOREACH_WORD_SEPARATOR(w, l, p, WHITESPACE, state) {
+                if (l == k && memcmp(w, type, l) == 0)
+                        return true;
+
+                if (l == k + 2 && w[0] == '[' && memcmp(w + 1, type, l - 2) == 0 && w[l-1] == ']')
+                        return true;
+        }
+
+        return false;
+}
+

 bool is_valid_documentation_url(const char *url) {
         assert(url);
 
 bool is_valid_documentation_url(const char *url) {
         assert(url);