logger: support printk() style priority prefixes

[elogind.git] / util.c

diff --git a/util.c b/util.c
index f5f1b3a45e642655217be276d8c7700c058c88a4..5df811d038df60414a221b9d2a2f9d40a1545cca 100644 (file)
--- a/util.c
+++ b/util.c
@@ -1627,8 +1627,9 @@ int acquire_terminal(const char *name, bool fail, bool force) {
         }
 
         for (;;) {
-                if ((r = flush_fd(notify)) < 0)
-                        goto fail;
+                if (notify >= 0)
+                        if ((r = flush_fd(notify)) < 0)
+                                goto fail;
 
                 /* We pass here O_NOCTTY only so that we can check the return
                  * value TIOCSCTTY and have a reliable way to figure out if we
@@ -1889,6 +1890,24 @@ int parse_usec(const char *t, usec_t *usec) {
         return 0;
 }
 
+int make_stdio(int fd) {
+        int r, s, t;
+
+        assert(fd >= 0);
+
+        r = dup2(fd, STDIN_FILENO);
+        s = dup2(fd, STDOUT_FILENO);
+        t = dup2(fd, STDERR_FILENO);
+
+        if (fd >= 3)
+                close_nointr_nofail(fd);
+
+        if (r < 0 || s < 0 || t < 0)
+                return -errno;
+
+        return 0;
+}
+
 static const char *const ioprio_class_table[] = {
         [IOPRIO_CLASS_NONE] = "none",
         [IOPRIO_CLASS_RT] = "realtime",