nspawn: cleanup and chown the synced cgroup hierarchy (#4223)

[elogind.git] / src / basic / terminal-util.c

diff --git a/src/basic/terminal-util.c b/src/basic/terminal-util.c
index 465326cfcf1845fc808a9222b76986e2010e2bb0..efd35cd727cc944c166f428c113669ff97d975c6 100644 (file)
--- a/src/basic/terminal-util.c
+++ b/src/basic/terminal-util.c
@@ -347,12 +347,7 @@ int open_terminal(const char *name, int mode) {
         }
 
         r = isatty(fd);
-        if (r < 0) {
-                safe_close(fd);
-                return -errno;
-        }
-
-        if (!r) {
+        if (r == 0) {
                 safe_close(fd);
                 return -ENOTTY;
         }
@@ -792,7 +787,7 @@ bool tty_is_vc_resolve(const char *tty) {
 }
 
 const char *default_term_for_tty(const char *tty) {
-        return tty && tty_is_vc_resolve(tty) ? "TERM=linux" : "TERM=vt220";
+        return tty && tty_is_vc_resolve(tty) ? "linux" : "vt220";
 }
 #endif // 0
 
@@ -1203,12 +1198,9 @@ int open_terminal_in_namespace(pid_t pid, const char *name, int mode) {
 }
 #endif // 0
 
-bool terminal_is_dumb(void) {
+static bool getenv_terminal_is_dumb(void) {
         const char *e;
 
-        if (!on_tty())
-                return true;
-
         e = getenv("TERM");
         if (!e)
                 return true;
@@ -1216,15 +1208,25 @@ bool terminal_is_dumb(void) {
         return streq(e, "dumb");
 }
 
+bool terminal_is_dumb(void) {
+        if (!on_tty())
+                return true;
+
+        return getenv_terminal_is_dumb();
+}
+
 bool colors_enabled(void) {
         static int enabled = -1;
 
         if (_unlikely_(enabled < 0)) {
-                const char *colors;
-
-                colors = getenv("SYSTEMD_COLORS");
-                if (colors)
-                        enabled = parse_boolean(colors) != 0;
+                int val;
+
+                val = getenv_bool("SYSTEMD_COLORS");
+                if (val >= 0)
+                        enabled = val;
+                else if (getpid() == 1)
+                        /* PID1 outputs to the console without holding it open all the time */
+                        enabled = !getenv_terminal_is_dumb();
                 else
                         enabled = !terminal_is_dumb();
         }