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Annotation of src/usr.bin/tmux/cmd-respawn-window.c, Revision 1.31

1.31    ! nicm        1: /* $OpenBSD: cmd-respawn-window.c,v 1.30 2016/01/19 15:59:12 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.30      nicm        4:  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18:
                     19: #include <sys/types.h>
                     20:
1.15      nicm       21: #include <stdlib.h>
1.1       nicm       22: #include <unistd.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: /*
                     27:  * Respawn a window (restart the command). Kill existing if -k given.
                     28:  */
                     29:
1.31    ! nicm       30: static enum cmd_retval  cmd_respawn_window_exec(struct cmd *, struct cmd_q *);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_respawn_window_entry = {
1.27      nicm       33:        .name = "respawn-window",
                     34:        .alias = "respawnw",
                     35:
                     36:        .args = { "kt:", 0, -1 },
                     37:        .usage = "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
                     38:
1.28      nicm       39:        .tflag = CMD_WINDOW,
                     40:
                     41:        .flags = 0,
1.27      nicm       42:        .exec = cmd_respawn_window_exec
1.1       nicm       43: };
                     44:
1.31    ! nicm       45: static enum cmd_retval
1.17      nicm       46: cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       47: {
1.13      nicm       48:        struct args             *args = self->args;
1.26      nicm       49:        struct session          *s = cmdq->state.tflag.s;
                     50:        struct winlink          *wl = cmdq->state.tflag.wl;
                     51:        struct window           *w = wl->window;
1.1       nicm       52:        struct window_pane      *wp;
1.24      nicm       53:        struct environ          *env;
1.22      nicm       54:        const char              *path;
1.1       nicm       55:        char                    *cause;
1.21      nicm       56:        struct environ_entry    *envent;
1.1       nicm       57:
1.13      nicm       58:        if (!args_has(self->args, 'k')) {
1.1       nicm       59:                TAILQ_FOREACH(wp, &w->panes, entry) {
                     60:                        if (wp->fd == -1)
                     61:                                continue;
1.26      nicm       62:                        cmdq_error(cmdq, "window still active: %s:%d", s->name,
                     63:                            wl->idx);
1.16      nicm       64:                        return (CMD_RETURN_ERROR);
1.1       nicm       65:                }
                     66:        }
                     67:
1.24      nicm       68:        env = environ_create();
                     69:        environ_copy(global_environ, env);
                     70:        environ_copy(s->environ, env);
                     71:        server_fill_environ(s, env);
1.1       nicm       72:
                     73:        wp = TAILQ_FIRST(&w->panes);
                     74:        TAILQ_REMOVE(&w->panes, wp, entry);
1.3       nicm       75:        layout_free(w);
1.12      nicm       76:        window_destroy_panes(w);
1.1       nicm       77:        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                     78:        window_pane_resize(wp, w->sx, w->sy);
1.21      nicm       79:
                     80:        path = NULL;
                     81:        if (cmdq->client != NULL && cmdq->client->session == NULL)
1.24      nicm       82:                envent = environ_find(cmdq->client->environ, "PATH");
1.21      nicm       83:        else
1.24      nicm       84:                envent = environ_find(s->environ, "PATH");
1.21      nicm       85:        if (envent != NULL)
                     86:                path = envent->value;
                     87:
1.25      nicm       88:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
1.22      nicm       89:            s->tio, &cause) != 0) {
1.17      nicm       90:                cmdq_error(cmdq, "respawn window failed: %s", cause);
1.15      nicm       91:                free(cause);
1.24      nicm       92:                environ_free(env);
1.29      nicm       93:                server_destroy_pane(wp, 0);
1.16      nicm       94:                return (CMD_RETURN_ERROR);
1.1       nicm       95:        }
1.18      nicm       96:        layout_init(w, wp);
1.14      nicm       97:        window_pane_reset_mode(wp);
1.1       nicm       98:        screen_reinit(&wp->base);
1.14      nicm       99:        input_init(wp);
1.4       nicm      100:        window_set_active_pane(w, wp);
1.1       nicm      101:
                    102:        recalculate_sizes();
                    103:        server_redraw_window(w);
                    104:
1.24      nicm      105:        environ_free(env);
1.16      nicm      106:        return (CMD_RETURN_NORMAL);
1.1       nicm      107: }