journalctl: reset cached column count on SIGWINCH

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

diff --git a/src/shared/util.c b/src/shared/util.c
index 97f766c33c5b043559472d3b6817d442626c4bc1..e0156868ade4e4259af439ab3fa5b9c77236cfa6 100644 (file)
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -70,6 +70,7 @@
 
 int saved_argc = 0;
 char **saved_argv = NULL;
+int parsed_columns = 0;
 
 size_t page_size(void) {
         static __thread size_t pgsz = 0;
@@ -3740,7 +3741,7 @@ int fd_columns(int fd) {
 }
 
 static unsigned columns_cached(bool cached) {
-        static __thread int parsed_columns = 0, env_columns = -1;
+        static __thread int env_columns = -1;
         const char *e;
 
         if (_likely_(parsed_columns > 0 && cached))
@@ -3776,6 +3777,11 @@ unsigned columns_uncached(void) {
         return columns_cached(false);
 }
 
+/* intended to be used as a SIGWINCH sighandler */
+void columns_cache_reset(int signum) {
+        parsed_columns = 0;
+}
+
 int fd_lines(int fd) {
         struct winsize ws;
         zero(ws);