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Refs #25 - made sure signals that may be set to ignored in mysqld were set to default in the child process.

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Alexey Yurchenko 2014-12-10 23:29:28 +02:00 committed by Nirbhay Choubey
parent c72ed05cdc
commit b02d736560
1 changed files with 29 additions and 1 deletions
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30
sql/wsrep_utils.cc
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@ -150,7 +150,35 @@ process::process (const char* cmd, const char* type)
goto cleanup_pipe;
}
err_ = posix_spawnattr_setflags (&attr, POSIX_SPAWN_SETSIGDEF |
/* make sure that no signlas are masked in child process */
sigset_t sigmask_empty; sigemptyset(&sigmask_empty);
err_ = posix_spawnattr_setsigmask(&attr, &sigmask_empty);
if (err_)
{
WSREP_ERROR ("posix_spawnattr_setsigmask() failed: %d (%s)",
err_, strerror(err_));
goto cleanup_attr;
}
/* make sure the following signals are not ignored in child process */
sigset_t default_signals; sigemptyset(&default_signals);
sigaddset(&default_signals, SIGHUP);
sigaddset(&default_signals, SIGINT);
sigaddset(&default_signals, SIGQUIT);
sigaddset(&default_signals, SIGPIPE);
sigaddset(&default_signals, SIGTERM);
sigaddset(&default_signals, SIGCHLD);
err_ = posix_spawnattr_setsigdefault(&attr, &default_signals);
if (err_)
{
WSREP_ERROR ("posix_spawnattr_setsigdefault() failed: %d (%s)",
err_, strerror(err_));
goto cleanup_attr;
}
err_ = posix_spawnattr_setflags (&attr, POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGMASK |
/* start a new process group */ POSIX_SPAWN_SETPGROUP |
POSIX_SPAWN_USEVFORK);
if (err_)
{