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avoid race condition with sigwinch - scroll - scrollbackbuffer program for st |
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git clone git://git.suckless.org/scroll |
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commit 6d1a3bbbb870a303b47f790ba76146e61a4c7b6a |
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parent 6b13c34098454e6e667aca6bf37c47feedc0d185 |
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Author: Jan Klemkow <[email protected]> |
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Date: Tue, 28 Apr 2020 21:20:42 +0200 |
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avoid race condition with sigwinch |
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if sigwinch comes before forking the child process, |
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we are traped into an endless loop. because, the |
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variable child is zero. Thus, we propagating sigwinch |
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to ourself in the signal handler. |
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Diffstat: |
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M scroll.c | 6 +++--- |
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1 file changed, 3 insertions(+), 3 deletions(-) |
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--- |
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diff --git a/scroll.c b/scroll.c |
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@@ -428,9 +428,6 @@ main(int argc, char *argv[]) |
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if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1) |
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die("ioctl:"); |
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- if (signal(SIGWINCH, sigwinch) == SIG_ERR) |
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- die("signal:"); |
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- |
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child = forkpty(&mfd, NULL, &dfl, &ws); |
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if (child == -1) |
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die("forkpty:"); |
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@@ -457,6 +454,9 @@ main(int argc, char *argv[]) |
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die("pledge:"); |
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#endif |
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+ if (signal(SIGWINCH, sigwinch) == SIG_ERR) |
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+ die("signal:"); |
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+ |
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struct termios new = dfl; |
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cfmakeraw(&new); |
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new.c_cc[VMIN ] = 1; /* return read if at least one byte in buf… |
