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- djm@cvs.openbsd.org 2007/06/12 11:11:08

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[ssh.c]
     fix slave exit value when a control master goes away without passing the
     full exit status by ensuring that the slave reads a full int. bz#1261
     reported by frekko AT gmail.com; ok markus@ dtucker@
This commit is contained in:
Darren Tucker 2007-06-12 23:41:33 +10:00
parent 43ce902449
commit 2cbec749d7
2 changed files with 19 additions and 11 deletions
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7
ChangeLog
View File

@ -18,6 +18,11 @@
depends on the platform supporting sane O_NONBLOCK semantics for open
on FIFOs (apparently POSIX does not mandate this), which OpenBSD does.
bz #856; report by cjwatson AT debian.org; ok markus@
- djm@cvs.openbsd.org 2007/06/12 11:11:08
[ssh.c]
fix slave exit value when a control master goes away without passing the
full exit status by ensuring that the slave reads a full int. bz#1261
reported by frekko AT gmail.com; ok markus@ dtucker@
20070611
- (djm) Bugzilla #1306: silence spurious error messages from hang-on-exit
@ -3032,4 +3037,4 @@
OpenServer 6 and add osr5bigcrypt support so when someone migrates
passwords between UnixWare and OpenServer they will still work. OK dtucker@
$Id: ChangeLog,v 1.4692 2007/06/12 13:41:06 dtucker Exp $
$Id: ChangeLog,v 1.4693 2007/06/12 13:41:33 dtucker Exp $

23
ssh.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh.c,v 1.295 2007/01/03 03:01:40 stevesk Exp $ */
/* $OpenBSD: ssh.c,v 1.296 2007/06/12 11:11:08 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -1458,25 +1458,28 @@ control_client(const char *path)
/* Stick around until the controlee closes the client_fd */
exitval = 0;
for (;!control_client_terminate;) {
r = read(sock, &exitval, sizeof(exitval));
for (i = 0; !control_client_terminate && i < (int)sizeof(exitval);) {
r = read(sock, (char *)&exitval + i, sizeof(exitval) - i);
if (r == 0) {
debug2("Received EOF from master");
break;
}
if (r > 0)
debug2("Received exit status from master %d", exitval);
if (r == -1 && errno != EINTR)
fatal("%s: read %s", __func__, strerror(errno));
i += r;
}
if (control_client_terminate)
debug2("Exiting on signal %d", control_client_terminate);
close(sock);
leave_raw_mode();
if (control_client_terminate) {
debug2("Exiting on signal %d", control_client_terminate);
exitval = 255;
} else if (i < (int)sizeof(exitval)) {
debug2("Control master terminated unexpectedly");
exitval = 255;
} else
debug2("Received exit status from master %d", exitval);
if (tty_flag && options.log_level != SYSLOG_LEVEL_QUIET)
fprintf(stderr, "Connection to master closed.\r\n");