105 lines
2.7 KiB
Diff
105 lines
2.7 KiB
Diff
From e3e273f70ea4f8b33f89478020a421bdc203666e Mon Sep 17 00:00:00 2001
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From: Scott Little <scott.little@windriver.com>
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Date: Fri, 26 Aug 2016 16:04:48 -0400
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Subject: [PATCH 2/2] WRS: Patch501:
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bash-history-exit-child-on-parent-death.patch
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---
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shell.c | 16 +-
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sig.c | 13 +
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sig.h | 2 +
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3 files changed, 30 insertions(+), 1 deletion(-)
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diff --git a/shell.c b/shell.c
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index 7eca4e3..dcba61a 100644
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--- a/shell.c
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+++ b/shell.c
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@@ -75,6 +75,7 @@
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#if defined (SYSLOG_HISTORY)
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# include <syslog.h>
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# include <sys/socket.h>
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+# include <sys/prctl.h>
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# include "error.h"
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#endif
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@@ -338,6 +339,7 @@ static void shell_reinitialize __P((void));
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static void show_shell_usage __P((FILE *, int));
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#if defined (SYSLOG_HISTORY)
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+int logger_terminated = 0;
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static pid_t make_consumer_process __P(());
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#endif
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@@ -1687,6 +1689,16 @@ make_consumer_process ()
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default_tty_job_signals ();
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+ /* handle parent process deaths */
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+ set_signal_handler(SIGTERM, sigterm_logger_sighandler);
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+ prctl(PR_SET_PDEATHSIG, SIGTERM);
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+
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+ if (getppid() == 1)
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+ {
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+ /* parent has already died */
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+ exit (0);
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+ }
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+
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close(cmdline_hist_sock[0]);
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ret = getsockopt(cmdline_hist_sock[1], SOL_SOCKET, SO_RCVBUF, &rcvbuf_size, &optlen);
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@@ -1718,7 +1730,9 @@ make_consumer_process ()
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/*syslog this bash command line*/
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syslog (SYSLOG_FACILITY|SYSLOG_LEVEL, "HISTORY: PID=%d UID=%d %s",
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getpid(), current_user.uid, buffer);
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- } while (1);
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+ } while (!logger_terminated);
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+
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+ exit(0);
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}
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else
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diff --git a/sig.c b/sig.c
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index d38246d..5ad0c2d 100644
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--- a/sig.c
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+++ b/sig.c
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@@ -561,6 +561,19 @@ termsig_handler (sig)
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kill (getpid (), sig);
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}
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+sighandler
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+sigterm_logger_sighandler (sig)
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+ int sig;
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+{
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+#if defined (MUST_REINSTALL_SIGHANDLERS)
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+ signal (sig, sigterm_logger_sighandler);
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+#endif
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+
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+ logger_terminated = 1;
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+
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+ SIGRETURN (0);
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+}
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+
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/* What we really do when SIGINT occurs. */
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sighandler
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sigint_sighandler (sig)
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diff --git a/sig.h b/sig.h
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index 540aa3e..8f47c56 100644
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--- a/sig.h
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+++ b/sig.h
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@@ -115,11 +115,13 @@ extern volatile int sigwinch_received;
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extern int interrupt_immediately;
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extern int terminate_immediately;
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+extern int logger_terminated;
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/* Functions from sig.c. */
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extern sighandler termsig_sighandler __P((int));
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extern void termsig_handler __P((int));
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extern sighandler sigint_sighandler __P((int));
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+extern sighandler sigterm_logger_sighandler __P((int));
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extern void initialize_signals __P((int));
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extern void initialize_terminating_signals __P((void));
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extern void reset_terminating_signals __P((void));
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--
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1.9.1
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