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Red Hat Bugzilla – Attachment 1477667 Details for
Bug 1535670
Clarify atomicity semantics of sigpause/sigsuspend in glibc.
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Reproducer using sigsuspend
bz1535670-sigsuspend.c (text/plain), 620 bytes, created by
Florian Weimer
on 2018-08-21 19:12:31 UTC
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Description:
Reproducer using sigsuspend
Filename:
MIME Type:
Creator:
Florian Weimer
Created:
2018-08-21 19:12:31 UTC
Size:
620 bytes
patch
obsolete
>#include <signal.h> >#include <stdlib.h> >#include <unistd.h> >#include <sys/wait.h> > >static void handleSigTerm(int sig) >{} > >int main() >{ > sighold(SIGTERM); > sigset(SIGTERM, handleSigTerm); > pid_t forkPid = fork(); > sigset_t sigterm; > sigfillset(&sigterm); > sigdelset(&sigterm, SIGTERM); > if (forkPid == 0) { > // Child process > sigsuspend(&sigterm); > _exit(0); > } > //usleep(100000); // Corrects bad fork()/kill() behavior > sigset(SIGTERM, SIG_DFL); > sigrelse(SIGTERM); > kill(forkPid, SIGTERM); > wait(NULL); // Hangs here if usleep() commented-out > return 0; >}
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