Sync OpenBSD patchset 345:

Don't attempt to open() the tty path, rely on the client sending its stdin fd
with imsg and fatal if it doesn't, then set the FD_CLOEXEC flag in tty_init
instead of tty_open to prevent them leaking into child processes if any are
created between the two calls.

This bumps the protocol version, so the tmux server should be killed before
upgrading.
This commit is contained in:
Tiago Cunha
2009-09-23 14:39:30 +00:00
parent c40d8cbda4
commit acedc2dcf2
4 changed files with 43 additions and 47 deletions

View File

@ -1,4 +1,4 @@
/* $Id: client.c,v 1.71 2009-09-20 22:11:27 tcunha Exp $ */
/* $Id: client.c,v 1.72 2009-09-23 14:39:30 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -45,7 +45,7 @@ client_init(char *path, struct client_ctx *cctx, int cmdflags, int flags)
struct winsize ws;
size_t size;
int fd, fd2, mode;
char *name, *term;
char *term;
#ifdef HAVE_SETPROCTITLE
char rpathbuf[MAXPATHLEN];
#endif
@ -117,13 +117,8 @@ server_started:
*data.term = '\0';
}
*data.tty = '\0';
if ((name = ttyname(STDIN_FILENO)) == NULL)
fatal("ttyname failed");
if (strlcpy(data.tty, name, sizeof data.tty) >= sizeof data.tty)
fatalx("ttyname failed");
fd2 = dup(STDIN_FILENO);
if ((fd2 = dup(STDIN_FILENO)) == -1)
fatal("dup failed");
imsg_compose(&cctx->ibuf, MSG_IDENTIFY,
PROTOCOL_VERSION, -1, fd2, &data, sizeof data);
}