 |
fix race condition between sigwinch and sigchld - scroll - scrollbackbuffer pro… |
 |
git clone git://git.suckless.org/scroll |
 |
Log |
|
Files |
|
Refs |
|
README |
|
LICENSE |
|
--- |
|
commit 1dbf2dce08892df710645ddbd2ce12759ec95078 |
|
parent 58c58743d8f391ef0e4776fc46d92c824795d162 |
|
Author: Jan Klemkow <[email protected]> |
|
Date: Thu, 30 Apr 2020 22:12:50 +0200 |
|
|
|
fix race condition between sigwinch and sigchld |
|
|
|
sigwinch died if it tries to set the window size |
|
to a file descriptor of an exited child. Thus, |
|
we just ignore this error in that situation. |
|
|
|
Diffstat: |
|
M scroll.c | 5 ++++- |
|
|
|
1 file changed, 4 insertions(+), 1 deletion(-) |
|
--- |
|
diff --git a/scroll.c b/scroll.c |
|
@@ -96,8 +96,11 @@ sigwinch(int sig) |
|
|
|
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1) |
|
die("ioctl:"); |
|
- if (ioctl(mfd, TIOCSWINSZ, &ws) == -1) |
|
+ if (ioctl(mfd, TIOCSWINSZ, &ws) == -1) { |
|
+ if (errno == EBADF) /* child already exited */ |
|
+ return; |
|
die("ioctl:"); |
|
+ } |
|
kill(-child, SIGWINCH); |
|
doredraw = true; |
|
} |
