diff options
| author | dtucker@openbsd.org <dtucker@openbsd.org> | 2020-01-23 07:10:22 +0000 |
|---|---|---|
| committer | Darren Tucker <dtucker@dtucker.net> | 2020-01-23 18:51:25 +1100 |
| commit | 3bf2a6ac791d64046a537335a0f1d5e43579c5ad (patch) | |
| tree | 76fcc0f1be306541c074be4aed3aca66023f0962 /mux.c | |
| parent | e027c044c796f3a01081a91bee55741204283f28 (diff) | |
| download | openssh-git-3bf2a6ac791d64046a537335a0f1d5e43579c5ad.tar.gz | |
upstream: Replace all calls to signal(2) with a wrapper around
sigaction(2). This wrapper blocks all other signals during the handler
preventing races between handlers, and sets SA_RESTART which should reduce
the potential for short read/write operations.
OpenBSD-Commit-ID: 5e047663fd77a40d7b07bdabe68529df51fd2519
Diffstat (limited to 'mux.c')
| -rw-r--r-- | mux.c | 22 |
1 files changed, 11 insertions, 11 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: mux.c,v 1.80 2019/06/28 13:35:04 deraadt Exp $ */ +/* $OpenBSD: mux.c,v 1.81 2020/01/23 07:10:22 dtucker Exp $ */ /* * Copyright (c) 2002-2008 Damien Miller <djm@openbsd.org> * @@ -1911,7 +1911,7 @@ mux_client_request_session(int fd) return -1; } - signal(SIGPIPE, SIG_IGN); + ssh_signal(SIGPIPE, SIG_IGN); if (stdin_null_flag) { if ((devnull = open(_PATH_DEVNULL, O_RDONLY)) == -1) @@ -2012,10 +2012,10 @@ mux_client_request_session(int fd) fatal("%s pledge(): %s", __func__, strerror(errno)); platform_pledge_mux(); - signal(SIGHUP, control_client_sighandler); - signal(SIGINT, control_client_sighandler); - signal(SIGTERM, control_client_sighandler); - signal(SIGWINCH, control_client_sigrelay); + ssh_signal(SIGHUP, control_client_sighandler); + ssh_signal(SIGINT, control_client_sighandler); + ssh_signal(SIGTERM, control_client_sighandler); + ssh_signal(SIGWINCH, control_client_sigrelay); rawmode = tty_flag; if (tty_flag) @@ -2145,7 +2145,7 @@ mux_client_request_stdio_fwd(int fd) return -1; } - signal(SIGPIPE, SIG_IGN); + ssh_signal(SIGPIPE, SIG_IGN); if (stdin_null_flag) { if ((devnull = open(_PATH_DEVNULL, O_RDONLY)) == -1) @@ -2219,10 +2219,10 @@ mux_client_request_stdio_fwd(int fd) } muxclient_request_id++; - signal(SIGHUP, control_client_sighandler); - signal(SIGINT, control_client_sighandler); - signal(SIGTERM, control_client_sighandler); - signal(SIGWINCH, control_client_sigrelay); + ssh_signal(SIGHUP, control_client_sighandler); + ssh_signal(SIGINT, control_client_sighandler); + ssh_signal(SIGTERM, control_client_sighandler); + ssh_signal(SIGWINCH, control_client_sigrelay); /* * Stick around until the controlee closes the client_fd. |