tmate/cmd-lock-server.c
Nicholas Marriott 20636d956d Add a command queue to standardize and simplify commands that call other
commands and allow a command to block execution of subsequent
commands. This allows run-shell and if-shell to be synchronous which has
been much requested.

Each client has a default command queue and commands are consumed one at
a time from it. A command may suspend execution from the queue by
returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() -
for example run-shell does this from the callback that is fired after
the job is freed.

When the command queue becomes empty, command clients are automatically
exited (unless attaching). A callback is also fired - this is used for
nested commands in, for example, if-shell which can block execution of
the client's cmdq until a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the
old curclient/cmdclient distinction - a cmdq is bound to one client (or
none if in the configuration file), this is a command client if
c->session is NULL otherwise an attached client.
2013-03-24 09:54:10 +00:00

87 lines
2.0 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
/*
* Lock commands.
*/
enum cmd_retval cmd_lock_server_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_lock_server_entry = {
"lock-server", "lock",
"", 0, 0,
"",
0,
NULL,
NULL,
cmd_lock_server_exec
};
const struct cmd_entry cmd_lock_session_entry = {
"lock-session", "locks",
"t:", 0, 0,
CMD_TARGET_SESSION_USAGE,
0,
NULL,
NULL,
cmd_lock_server_exec
};
const struct cmd_entry cmd_lock_client_entry = {
"lock-client", "lockc",
"t:", 0, 0,
CMD_TARGET_CLIENT_USAGE,
0,
NULL,
NULL,
cmd_lock_server_exec
};
enum cmd_retval
cmd_lock_server_exec(struct cmd *self, unused struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c;
struct session *s;
if (self->entry == &cmd_lock_server_entry)
server_lock();
else if (self->entry == &cmd_lock_session_entry) {
s = cmd_find_session(cmdq, args_get(args, 't'), 0);
if (s == NULL)
return (CMD_RETURN_ERROR);
server_lock_session(s);
} else {
c = cmd_find_client(cmdq, args_get(args, 't'), 0);
if (c == NULL)
return (CMD_RETURN_ERROR);
server_lock_client(c);
}
recalculate_sizes();
return (CMD_RETURN_NORMAL);
}