tmux/cmd-attach-session.c
Nicholas Marriott 4538c269d0 Alter how tmux handles the working directory to internally use file descriptors
rather than strings.

- Each session still has a current working directory.

- New sessions still get their working directory from the client that created
  them or its attached session if any.

- New windows are created by default in the session working directory.

- The -c flag to new, neww, splitw allows the working directory to be
  overridden.

- The -c flag to attach let's the session working directory be changed.

- The default-path option has been removed.

To get the equivalent to default-path '.', do:

        bind c neww -c $PWD

To get the equivalent of default-path '', do:

        bind c neww -c '#{pane_current_path}'

The equivalent of default-path '~' is left as an exercise for the reader.

This also changes the client identify protocol to be a set of messages rather
than one as well as some other changes that should make it easier to make
backwards-compatible protocol changes in future.
2013-10-06 21:02:23 +01:00

170 lines
4.3 KiB
C

/* $Id$ */
/*
* Copyright (c) 2007 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 <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "tmux.h"
/*
* Attach existing session to the current terminal.
*/
enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_attach_session_entry = {
"attach-session", "attach",
"c:drt:", 0, 0,
"[-dr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
CMD_CANTNEST|CMD_STARTSERVER,
NULL,
cmd_attach_session_exec
};
enum cmd_retval
cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
const char *cflag)
{
struct session *s;
struct client *c;
const char *update;
char *cause;
u_int i;
int fd;
struct format_tree *ft;
char *cp;
if (RB_EMPTY(&sessions)) {
cmdq_error(cmdq, "no sessions");
return (CMD_RETURN_ERROR);
}
if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
return (CMD_RETURN_ERROR);
if (cmdq->client == NULL)
return (CMD_RETURN_NORMAL);
if (cmdq->client->session != NULL) {
if (dflag) {
/*
* Can't use server_write_session in case attaching to
* the same session as currently attached to.
*/
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session != s)
continue;
if (c == cmdq->client)
continue;
server_write_client(c, MSG_DETACH, NULL, 0);
}
}
if (cflag != NULL) {
ft = format_create();
if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
format_client(ft, c);
format_session(ft, s);
format_winlink(ft, s, s->curw);
format_window_pane(ft, s->curw->window->active);
cp = format_expand(ft, cflag);
format_free(ft);
fd = open(cp, O_RDONLY|O_DIRECTORY);
free(cp);
if (fd == -1) {
cmdq_error(cmdq, "bad working directory: %s",
strerror(errno));
return (CMD_RETURN_ERROR);
}
close(s->cwd);
s->cwd = fd;
}
cmdq->client->session = s;
notify_attached_session_changed(cmdq->client);
session_update_activity(s);
server_redraw_client(cmdq->client);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
} else {
if (server_client_open(cmdq->client, s, &cause) != 0) {
cmdq_error(cmdq, "open terminal failed: %s", cause);
free(cause);
return (CMD_RETURN_ERROR);
}
if (cflag != NULL) {
ft = format_create();
if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
format_client(ft, c);
format_session(ft, s);
format_winlink(ft, s, s->curw);
format_window_pane(ft, s->curw->window->active);
cp = format_expand(ft, cflag);
format_free(ft);
fd = open(cp, O_RDONLY|O_DIRECTORY);
free(cp);
if (fd == -1) {
cmdq_error(cmdq, "bad working directory: %s",
strerror(errno));
return (CMD_RETURN_ERROR);
}
close(s->cwd);
s->cwd = fd;
}
if (rflag)
cmdq->client->flags |= CLIENT_READONLY;
if (dflag)
server_write_session(s, MSG_DETACH, NULL, 0);
update = options_get_string(&s->options, "update-environment");
environ_update(update, &cmdq->client->environ, &s->environ);
cmdq->client->session = s;
notify_attached_session_changed(cmdq->client);
session_update_activity(s);
server_redraw_client(cmdq->client);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
server_write_ready(cmdq->client);
cmdq->client_exit = 0;
}
recalculate_sizes();
server_update_socket();
return (CMD_RETURN_NORMAL);
}
enum cmd_retval
cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
return (cmd_attach_session(cmdq, args_get(args, 't'),
args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c')));
}