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Sync OpenBSD patchset 777:

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Merge the before and after attach client code into one in client.c
(instead of two in tmux.c and client.c).
This commit is contained in:
Tiago Cunha 2010-10-24 01:31:08 +00:00
parent 1276ea3653
commit bdbd4e28c2
4 changed files with 300 additions and 349 deletions
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343
client.c
View File

@ -1,4 +1,4 @@
/* $Id: client.c,v 1.98 2010-10-24 00:45:57 tcunha Exp $ */
/* $Id: client.c,v 1.99 2010-10-24 01:31:08 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -28,7 +28,6 @@
#include <pwd.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "tmux.h"
@ -37,81 +36,171 @@ struct imsgbuf client_ibuf;
struct event client_event;
const char *client_exitmsg;
int client_exitval;
int client_attached;
int client_connect(char *, int);
void client_send_identify(int);
void client_send_environ(void);
void client_write_server(enum msgtype, void *, size_t);
void client_update_event(void);
void client_signal(int, short, void *);
void client_callback(int, short, void *);
int client_dispatch(void);
int client_dispatch_attached(void);
int client_dispatch_wait(void *);
struct imsgbuf *
client_init(char *path, int cmdflags, int flags)
/* Connect client to server. */
int
client_connect(char *path, int start_server)
{
struct sockaddr_un sa;
size_t size;
int fd, mode;
#ifdef HAVE_SETPROCTITLE
char rpathbuf[MAXPATHLEN];
#endif
#ifdef HAVE_SETPROCTITLE
if (realpath(path, rpathbuf) == NULL)
strlcpy(rpathbuf, path, sizeof rpathbuf);
setproctitle("client (%s)", rpathbuf);
#endif
memset(&sa, 0, sizeof sa);
sa.sun_family = AF_UNIX;
size = strlcpy(sa.sun_path, path, sizeof sa.sun_path);
if (size >= sizeof sa.sun_path) {
errno = ENAMETOOLONG;
goto not_found;
return (-1);
}
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
fatal("socket failed");
if (connect(fd, (struct sockaddr *) &sa, SUN_LEN(&sa)) == -1) {
if (!(cmdflags & CMD_STARTSERVER))
goto not_found;
if (!start_server)
goto failed;
switch (errno) {
case ECONNREFUSED:
if (unlink(path) != 0)
goto not_found;
goto failed;
/* FALLTHROUGH */
case ENOENT:
if ((fd = server_start(path)) == -1)
goto start_failed;
goto server_started;
if ((fd = server_start()) == -1)
goto failed;
break;
default:
goto failed;
}
goto not_found;
}
server_started:
if ((mode = fcntl(fd, F_GETFL)) == -1)
fatal("fcntl failed");
if (fcntl(fd, F_SETFL, mode|O_NONBLOCK) == -1)
fatal("fcntl failed");
imsg_init(&client_ibuf, fd);
event_set(&client_event, fd, EV_READ, client_callback, NULL);
return (fd);
failed:
close(fd);
return (-1);
}
/* Client main loop. */
int
client_main(int argc, char **argv, int flags)
{
struct cmd *cmd;
struct cmd_list *cmdlist;
struct msg_command_data cmddata;
int cmdflags, fd;
enum msgtype msg;
char *cause;
/* Set up the initial command. */
cmdflags = 0;
if (shell_cmd != NULL) {
msg = MSG_SHELL;
cmdflags = CMD_STARTSERVER;
} else if (argc == 0) {
msg = MSG_COMMAND;
cmdflags = CMD_STARTSERVER|CMD_SENDENVIRON|CMD_CANTNEST;
} else {
msg = MSG_COMMAND;
/*
* It sucks parsing the command string twice (in client and
* later in server) but it is necessary to get the start server
* flag.
*/
if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
log_warnx("%s", cause);
return (1);
}
cmdflags &= ~CMD_STARTSERVER;
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if (cmd->entry->flags & CMD_STARTSERVER)
cmdflags |= CMD_STARTSERVER;
if (cmd->entry->flags & CMD_SENDENVIRON)
cmdflags |= CMD_SENDENVIRON;
if (cmd->entry->flags & CMD_CANTNEST)
cmdflags |= CMD_CANTNEST;
}
cmd_list_free(cmdlist);
}
/*
* Check if this could be a nested session, if the command can't nest:
* if the socket path matches $TMUX, this is probably the same server.
*/
if (shell_cmd == NULL && environ_path != NULL &&
cmdflags & CMD_CANTNEST && strcmp(socket_path, environ_path) == 0) {
log_warnx("sessions should be nested with care. "
"unset $TMUX to force.");
return (1);
}
/* Initialise the client socket and start the server. */
fd = client_connect(socket_path, cmdflags & CMD_STARTSERVER);
if (fd == -1) {
log_warn("failed to connect to server");
return (1);
}
/* Set process title, log and signals now this is the client. */
setproctitle("client (%s)", socket_path);
logfile("client");
/* Create imsg. */
imsg_init(&client_ibuf, fd);
event_set(&client_event, fd, EV_READ, client_callback, shell_cmd);
/* Establish signal handlers. */
set_signals(client_signal);
/* Send initial environment. */
if (cmdflags & CMD_SENDENVIRON)
client_send_environ();
client_send_identify(flags);
return (&client_ibuf);
/* Send first command. */
if (msg == MSG_COMMAND) {
/* Fill in command line arguments. */
cmddata.pid = environ_pid;
cmddata.idx = environ_idx;
start_failed:
log_warnx("server failed to start");
return (NULL);
/* Prepare command for server. */
cmddata.argc = argc;
if (cmd_pack_argv(
argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
log_warnx("command too long");
return (1);
}
not_found:
log_warn("server not found");
return (NULL);
client_write_server(msg, &cmddata, sizeof cmddata);
} else if (msg == MSG_SHELL)
client_write_server(msg, NULL, 0);
/* Set the event and dispatch. */
client_update_event();
event_dispatch();
/* Print the exit message, if any, and exit. */
if (client_attached && client_exitmsg != NULL && !login_shell)
printf("[%s]\n", client_exitmsg);
return (client_exitval);
}
/* Send identify message to server with the file descriptors. */
void
client_send_identify(int flags)
{
@ -136,13 +225,16 @@ client_send_identify(int flags)
if ((fd = dup(STDOUT_FILENO)) == -1)
fatal("dup failed");
imsg_compose(&client_ibuf, MSG_STDOUT, PROTOCOL_VERSION, -1, fd, NULL, 0);
imsg_compose(&client_ibuf,
MSG_STDOUT, PROTOCOL_VERSION, -1, fd, NULL, 0);
if ((fd = dup(STDERR_FILENO)) == -1)
fatal("dup failed");
imsg_compose(&client_ibuf, MSG_STDERR, PROTOCOL_VERSION, -1, fd, NULL, 0);
imsg_compose(&client_ibuf,
MSG_STDERR, PROTOCOL_VERSION, -1, fd, NULL, 0);
}
/* Forward entire environment to server. */
void
client_send_environ(void)
{
@ -156,12 +248,14 @@ client_send_environ(void)
}
}
/* Write a message to the server without a file descriptor. */
void
client_write_server(enum msgtype type, void *buf, size_t len)
{
imsg_compose(&client_ibuf, type, PROTOCOL_VERSION, -1, -1, buf, len);
}
/* Update client event based on whether it needs to read or read and write. */
void
client_update_event(void)
{
@ -171,91 +265,74 @@ client_update_event(void)
events = EV_READ;
if (client_ibuf.w.queued > 0)
events |= EV_WRITE;
event_set(&client_event, client_ibuf.fd, events, client_callback, NULL);
event_set(
&client_event, client_ibuf.fd, events, client_callback, shell_cmd);
event_add(&client_event, NULL);
}
__dead void
client_main(void)
{
logfile("client");
/* Note: event_init() has already been called. */
/* Set up signals. */
set_signals(client_signal);
/*
* Send a resize message immediately in case the terminal size has
* changed between the identify message to the server and the MSG_READY
* telling us to move into the client code.
*/
client_write_server(MSG_RESIZE, NULL, 0);
/*
* imsg_read in the first client poll loop (before the terminal has
* been initialised) may have read messages into the buffer after the
* MSG_READY switched to here. Process anything outstanding now to
* avoid hanging waiting for messages that have already arrived.
*/
if (client_dispatch() != 0)
goto out;
/* Set the event and dispatch. */
client_update_event();
event_dispatch();
out:
/* Print the exit message, if any, and exit. */
if (client_exitmsg != NULL && !login_shell)
printf("[%s]\n", client_exitmsg);
exit(client_exitval);
}
/* Callback to handle signals in the client. */
/* ARGSUSED */
void
client_signal(int sig, unused short events, unused void *data)
{
struct sigaction sigact;
struct sigaction sigact;
int status;
switch (sig) {
case SIGHUP:
client_exitmsg = "lost tty";
client_exitval = 1;
client_write_server(MSG_EXITING, NULL, 0);
break;
case SIGTERM:
client_exitmsg = "terminated";
client_exitval = 1;
client_write_server(MSG_EXITING, NULL, 0);
break;
case SIGWINCH:
client_write_server(MSG_RESIZE, NULL, 0);
break;
case SIGCONT:
memset(&sigact, 0, sizeof sigact);
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigact.sa_handler = SIG_IGN;
if (sigaction(SIGTSTP, &sigact, NULL) != 0)
fatal("sigaction failed");
client_write_server(MSG_WAKEUP, NULL, 0);
break;
if (!client_attached) {
switch (sig) {
case SIGCHLD:
waitpid(WAIT_ANY, &status, WNOHANG);
break;
case SIGTERM:
event_loopexit(NULL);
break;
}
} else {
switch (sig) {
case SIGHUP:
client_exitmsg = "lost tty";
client_exitval = 1;
client_write_server(MSG_EXITING, NULL, 0);
break;
case SIGTERM:
client_exitmsg = "terminated";
client_exitval = 1;
client_write_server(MSG_EXITING, NULL, 0);
break;
case SIGWINCH:
client_write_server(MSG_RESIZE, NULL, 0);
break;
case SIGCONT:
memset(&sigact, 0, sizeof sigact);
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigact.sa_handler = SIG_IGN;
if (sigaction(SIGTSTP, &sigact, NULL) != 0)
fatal("sigaction failed");
client_write_server(MSG_WAKEUP, NULL, 0);
break;
}
}
client_update_event();
}
/* Callback for client imsg read events. */
/* ARGSUSED */
void
client_callback(unused int fd, short events, unused void *data)
client_callback(unused int fd, short events, void *data)
{
ssize_t n;
int retval;
if (events & EV_READ) {
if ((n = imsg_read(&client_ibuf)) == -1 || n == 0)
goto lost_server;
if (client_dispatch() != 0) {
if (client_attached)
retval = client_dispatch_attached();
else
retval = client_dispatch_wait(data);
if (retval != 0) {
event_loopexit(NULL);
return;
}
@ -275,8 +352,76 @@ lost_server:
event_loopexit(NULL);
}
/* Dispatch imsgs when in wait state (before MSG_READY). */
int
client_dispatch(void)
client_dispatch_wait(void *data)
{
struct imsg imsg;
ssize_t n, datalen;
struct msg_shell_data shelldata;
struct msg_exit_data exitdata;
const char *shellcmd = data;
if ((n = imsg_read(&client_ibuf)) == -1 || n == 0)
fatalx("imsg_read failed");
for (;;) {
if ((n = imsg_get(&client_ibuf, &imsg)) == -1)
fatalx("imsg_get failed");
if (n == 0)
return (0);
datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
switch (imsg.hdr.type) {
case MSG_EXIT:
case MSG_SHUTDOWN:
if (datalen != sizeof exitdata) {
if (datalen != 0)
fatalx("bad MSG_EXIT size");
} else {
memcpy(&exitdata, imsg.data, sizeof exitdata);
client_exitval = exitdata.retcode;
}
imsg_free(&imsg);
return (-1);
case MSG_READY:
if (datalen != 0)
fatalx("bad MSG_READY size");
client_attached = 1;
break;
case MSG_VERSION:
if (datalen != 0)
fatalx("bad MSG_VERSION size");
log_warnx("protocol version mismatch (client %u, "
"server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
client_exitval = 1;
imsg_free(&imsg);
return (-1);
case MSG_SHELL:
if (datalen != sizeof shelldata)
fatalx("bad MSG_SHELL size");
memcpy(&shelldata, imsg.data, sizeof shelldata);
shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
clear_signals(0);
shell_exec(shelldata.shell, shellcmd);
/* NOTREACHED */
default:
fatalx("unexpected message");
}
imsg_free(&imsg);
}
}
/* Dispatch imsgs in attached state (after MSG_READY). */
/* ARGSUSED */
int
client_dispatch_attached(void)
{
struct imsg imsg;
struct msg_lock_data lockdata;

15
server.c
View File

@ -1,4 +1,4 @@
/* $Id: server.c,v 1.246 2010-10-24 00:45:57 tcunha Exp $ */
/* $Id: server.c,v 1.247 2010-10-24 01:31:08 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -105,16 +105,13 @@ server_create_socket(void)
/* Fork new server. */
int
server_start(char *path)
server_start(void)
{
struct window_pane *wp;
int pair[2];
char *cause;
struct timeval tv;
u_int i;
#ifdef HAVE_SETPROCTITLE
char rpathbuf[MAXPATHLEN];
#endif
/* The first client is special and gets a socketpair; create it. */
if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pair) != 0)
@ -157,14 +154,8 @@ server_start(char *path)
utf8_build();
start_time = time(NULL);
socket_path = path;
#ifdef HAVE_SETPROCTITLE
if (realpath(socket_path, rpathbuf) == NULL)
strlcpy(rpathbuf, socket_path, sizeof rpathbuf);
log_debug("socket path %s", socket_path);
setproctitle("server (%s)", rpathbuf);
#endif
setproctitle("server (%s)", socket_path);
server_fd = server_create_socket();
server_client_create(pair[1]);

276
tmux.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: tmux.c,v 1.91 2010/10/16 08:42:35 nicm Exp $ */
/* $Id: tmux.c,v 1.220 2010-10-24 01:31:08 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -18,16 +18,13 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <pwd.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include "tmux.h"
@ -36,7 +33,6 @@
extern char *malloc_options;
#endif
char *cfg_file;
struct options global_options; /* server options */
struct options global_s_options; /* session options */
struct options global_w_options; /* window options */
@ -44,28 +40,19 @@ struct environ global_environ;
struct event_base *ev_base;
char *cfg_file;
char *shell_cmd;
int debug_level;
time_t start_time;
char *socket_path;
char socket_path[MAXPATHLEN];
int login_shell;
struct env_data {
char *path;
pid_t pid;
u_int idx;
};
char *environ_path;
pid_t environ_pid;
u_int environ_idx;
__dead void usage(void);
void parse_env(struct env_data *);
char *makesockpath(const char *);
__dead void shell_exec(const char *, const char *);
struct imsgbuf *main_ibuf;
struct event main_event;
void main_signal(int, short, unused void *);
void main_callback(int, short, void *);
void main_dispatch(const char *);
void parseenvironment(void);
char *makesocketpath(const char *);
#ifndef HAVE_PROGNAME
char *__progname = (char *) "tmux";
@ -139,14 +126,14 @@ areshell(const char *shell)
}
void
parse_env(struct env_data *data)
parseenvironment(void)
{
char *env, *path_pid, *pid_idx, buf[256];
size_t len;
const char *errstr;
long long ll;
data->pid = -1;
environ_pid = -1;
if ((env = getenv("TMUX")) == NULL)
return;
@ -159,9 +146,9 @@ parse_env(struct env_data *data)
/* path */
len = path_pid - env;
data->path = xmalloc (len + 1);
memcpy(data->path, env, len);
data->path[len] = '\0';
environ_path = xmalloc(len + 1);
memcpy(environ_path, env, len);
environ_path[len] = '\0';
/* pid */
len = pid_idx - path_pid - 1;
@ -173,17 +160,17 @@ parse_env(struct env_data *data)
ll = strtonum(buf, 0, LONG_MAX, &errstr);
if (errstr != NULL)
return;
data->pid = ll;
environ_pid = ll;
/* idx */
ll = strtonum(pid_idx+1, 0, UINT_MAX, &errstr);
ll = strtonum(pid_idx + 1, 0, UINT_MAX, &errstr);
if (errstr != NULL)
return;
data->idx = ll;
environ_idx = ll;
}
char *
makesockpath(const char *label)
makesocketpath(const char *label)
{
char base[MAXPATHLEN], *path;
struct stat sb;
@ -243,28 +230,18 @@ shell_exec(const char *shell, const char *shellcmd)
int
main(int argc, char **argv)
{
struct cmd_list *cmdlist;
struct cmd *cmd;
enum msgtype msg;
struct passwd *pw;
struct options *oo, *so, *wo;
struct keylist *keylist;
struct env_data envdata;
struct msg_command_data cmddata;
char *s, *shellcmd, *path, *label, *home, *cause;
char **var;
void *buf;
size_t len;
int opt, flags, quiet = 0, cmdflags = 0;
short events;
struct passwd *pw;
struct options *oo, *so, *wo;
struct keylist *keylist;
char *s, *path, *label, *home, **var;
int opt, flags, quiet = 0;
#if defined(DEBUG) && defined(__OpenBSD__)
malloc_options = (char *) "AFGJPX";
#endif
flags = 0;
shellcmd = label = path = NULL;
envdata.path = NULL;
label = path = NULL;
login_shell = (**argv == '-');
while ((opt = getopt(argc, argv, "28c:df:lL:qS:uUv")) != -1) {
switch (opt) {
@ -277,9 +254,9 @@ main(int argc, char **argv)
flags &= ~IDENTIFY_256COLOURS;
break;
case 'c':
if (shellcmd != NULL)
xfree(shellcmd);
shellcmd = xstrdup(optarg);
if (shell_cmd != NULL)
xfree(shell_cmd);
shell_cmd = xstrdup(optarg);
break;
case 'f':
if (cfg_file != NULL)
@ -315,7 +292,7 @@ main(int argc, char **argv)
argc -= optind;
argv += optind;
if (shellcmd != NULL && argc != 0)
if (shell_cmd != NULL && argc != 0)
usage();
log_open_tty(debug_level);
@ -451,6 +428,7 @@ main(int argc, char **argv)
options_set_number(wo, "utf8", 0);
}
/* Locate the configuration file. */
if (cfg_file == NULL) {
home = getenv("HOME");
if (home == NULL || *home == '\0') {
@ -466,21 +444,22 @@ main(int argc, char **argv)
}
/*
* Figure out the socket path. If specified on the command-line with
* -S or -L, use it, otherwise try $TMUX or assume -L default.
* Figure out the socket path. If specified on the command-line with -S
* or -L, use it, otherwise try $TMUX or assume -L default.
*/
parse_env(&envdata);
parseenvironment();
if (path == NULL) {
/* No -L. Try $TMUX, or default. */
/* If no -L, use the environment. */
if (label == NULL) {
path = envdata.path;
if (path == NULL)
if (environ_path != NULL)
path = xstrdup(environ_path);
else
label = xstrdup("default");
}
/* -L or default set. */
if (label != NULL) {
if ((path = makesockpath(label)) == NULL) {
if ((path = makesocketpath(label)) == NULL) {
log_warn("can't create socket");
exit(1);
}
@ -488,66 +467,14 @@ main(int argc, char **argv)
}
if (label != NULL)
xfree(label);
if (realpath(path, socket_path) == NULL)
strlcpy(socket_path, path, sizeof socket_path);
xfree(path);
if (shellcmd != NULL) {
msg = MSG_SHELL;
buf = NULL;
len = 0;
} else {
cmddata.pid = envdata.pid;
cmddata.idx = envdata.idx;
/* Prepare command for server. */
cmddata.argc = argc;
if (cmd_pack_argv(
argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
log_warnx("command too long");
exit(1);
}
msg = MSG_COMMAND;
buf = &cmddata;
len = sizeof cmddata;
}
if (shellcmd != NULL)
cmdflags |= CMD_STARTSERVER;
else if (argc == 0) /* new-session is the default */
cmdflags |= CMD_STARTSERVER|CMD_SENDENVIRON|CMD_CANTNEST;
else {
/*
* It sucks parsing the command string twice (in client and
* later in server) but it is necessary to get the start server
* flag.
*/
if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
log_warnx("%s", cause);
exit(1);
}
cmdflags &= ~CMD_STARTSERVER;
TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
if (cmd->entry->flags & CMD_STARTSERVER)
cmdflags |= CMD_STARTSERVER;
if (cmd->entry->flags & CMD_SENDENVIRON)
cmdflags |= CMD_SENDENVIRON;
if (cmd->entry->flags & CMD_CANTNEST)
cmdflags |= CMD_CANTNEST;
}
cmd_list_free(cmdlist);
}
/*
* Check if this could be a nested session, if the command can't nest:
* if the socket path matches $TMUX, this is probably the same server.
*/
if (shellcmd == NULL && envdata.path != NULL &&
cmdflags & CMD_CANTNEST &&
(path == envdata.path || strcmp(path, envdata.path) == 0)) {
log_warnx("sessions should be nested with care. "
"unset $TMUX to force.");
exit(1);
}
/* Set process title. */
setproctitle("%s (%s)", __progname, socket_path);
/* Pass control to the client. */
#ifdef HAVE_BROKEN_KQUEUE
if (setenv("EVENT_NOKQUEUE", "1", 1) != 0)
fatal("setenv failed");
@ -563,120 +490,5 @@ main(int argc, char **argv)
#ifdef HAVE_BROKEN_POLL
unsetenv("EVENT_NOPOLL");
#endif
set_signals(main_signal);
/* Initialise the client socket/start the server. */
if ((main_ibuf = client_init(path, cmdflags, flags)) == NULL)
exit(1);
xfree(path);
imsg_compose(main_ibuf, msg, PROTOCOL_VERSION, -1, -1, buf, len);
events = EV_READ;
if (main_ibuf->w.queued > 0)
events |= EV_WRITE;
event_set(&main_event, main_ibuf->fd, events, main_callback, shellcmd);
event_add(&main_event, NULL);
event_dispatch();
event_del(&main_event);
clear_signals(0);
client_main(); /* doesn't return */
}
/* ARGSUSED */
void
main_signal(int sig, unused short events, unused void *data)
{
int status;
switch (sig) {
case SIGTERM:
exit(1);
case SIGCHLD:
waitpid(WAIT_ANY, &status, WNOHANG);
break;
}
}
/* ARGSUSED */
void
main_callback(unused int fd, short events, void *data)
{
char *shellcmd = data;
if (events & EV_READ)
main_dispatch(shellcmd);
if (events & EV_WRITE) {
if (msgbuf_write(&main_ibuf->w) < 0)
fatalx("msgbuf_write failed");
}
event_del(&main_event);
events = EV_READ;
if (main_ibuf->w.queued > 0)
events |= EV_WRITE;
event_set(&main_event, main_ibuf->fd, events, main_callback, shellcmd);
event_add(&main_event, NULL);
}
void
main_dispatch(const char *shellcmd)
{
struct imsg imsg;
ssize_t n, datalen;
struct msg_shell_data shelldata;
struct msg_exit_data exitdata;
if ((n = imsg_read(main_ibuf)) == -1 || n == 0)
fatalx("imsg_read failed");
for (;;) {
if ((n = imsg_get(main_ibuf, &imsg)) == -1)
fatalx("imsg_get failed");
if (n == 0)
return;
datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
switch (imsg.hdr.type) {
case MSG_EXIT:
case MSG_SHUTDOWN:
if (datalen != sizeof exitdata) {
if (datalen != 0)
fatalx("bad MSG_EXIT size");
exit(0);
}
memcpy(&exitdata, imsg.data, sizeof exitdata);
exit(exitdata.retcode);
case MSG_READY:
if (datalen != 0)
fatalx("bad MSG_READY size");
event_loopexit(NULL); /* move to client_main() */
break;
case MSG_VERSION:
if (datalen != 0)
fatalx("bad MSG_VERSION size");
log_warnx("protocol version mismatch (client %u, "
"server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
exit(1);
case MSG_SHELL:
if (datalen != sizeof shelldata)
fatalx("bad MSG_SHELL size");
memcpy(&shelldata, imsg.data, sizeof shelldata);
shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
clear_signals(0);
shell_exec(shelldata.shell, shellcmd);
default:
fatalx("unexpected message");
}
imsg_free(&imsg);
}
exit(client_main(argc, argv, flags));
}

15
tmux.h
View File

@ -1,4 +1,4 @@
/* $Id: tmux.h,v 1.579 2010-10-09 14:30:26 tcunha Exp $ */
/* $Id: tmux.h,v 1.580 2010-10-24 01:31:08 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -1289,15 +1289,19 @@ extern struct options global_w_options;
extern struct environ global_environ;
extern struct event_base *ev_base;
extern char *cfg_file;
extern char *shell_cmd;
extern int debug_level;
extern int be_quiet;
extern time_t start_time;
extern char *socket_path;
extern char socket_path[MAXPATHLEN];
extern int login_shell;
extern char *environ_path;
extern pid_t environ_pid;
extern u_int environ_idx;
void logfile(const char *);
const char *getshell(void);
int checkshell(const char *);
int areshell(const char *);
__dead void shell_exec(const char *, const char *);
/* cfg.c */
extern int cfg_finished;
@ -1596,8 +1600,7 @@ void cmd_buffer_free(struct cmd *);
size_t cmd_buffer_print(struct cmd *, char *, size_t);
/* client.c */
struct imsgbuf *client_init(char *, int, int);
__dead void client_main(void);
int client_main(int, char **, int);
/* key-bindings.c */
extern struct key_bindings key_bindings;
@ -1620,7 +1623,7 @@ const char *key_string_lookup_key(int);
/* server.c */
extern struct clients clients;
extern struct clients dead_clients;
int server_start(char *);
int server_start(void);
void server_update_socket(void);
/* server-client.c */