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Annotation of src/usr.bin/tmux/cmd-respawn-window.c, Revision 1.33

1.33    ! nicm        1: /* $OpenBSD: cmd-respawn-window.c,v 1.32 2016/10/16 19:04:05 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:
1.32      nicm       30: static enum cmd_retval cmd_respawn_window_exec(struct cmd *,
                     31:                            struct cmdq_item *);
1.1       nicm       32:
                     33: const struct cmd_entry cmd_respawn_window_entry = {
1.27      nicm       34:        .name = "respawn-window",
                     35:        .alias = "respawnw",
                     36:
                     37:        .args = { "kt:", 0, -1 },
                     38:        .usage = "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
                     39:
1.28      nicm       40:        .tflag = CMD_WINDOW,
                     41:
                     42:        .flags = 0,
1.27      nicm       43:        .exec = cmd_respawn_window_exec
1.1       nicm       44: };
                     45:
1.31      nicm       46: static enum cmd_retval
1.32      nicm       47: cmd_respawn_window_exec(struct cmd *self, struct cmdq_item *item)
1.1       nicm       48: {
1.13      nicm       49:        struct args             *args = self->args;
1.32      nicm       50:        struct session          *s = item->state.tflag.s;
                     51:        struct winlink          *wl = item->state.tflag.wl;
1.26      nicm       52:        struct window           *w = wl->window;
1.1       nicm       53:        struct window_pane      *wp;
1.24      nicm       54:        struct environ          *env;
1.22      nicm       55:        const char              *path;
1.1       nicm       56:        char                    *cause;
1.21      nicm       57:        struct environ_entry    *envent;
1.1       nicm       58:
1.13      nicm       59:        if (!args_has(self->args, 'k')) {
1.1       nicm       60:                TAILQ_FOREACH(wp, &w->panes, entry) {
                     61:                        if (wp->fd == -1)
                     62:                                continue;
1.32      nicm       63:                        cmdq_error(item, "window still active: %s:%d", s->name,
1.26      nicm       64:                            wl->idx);
1.16      nicm       65:                        return (CMD_RETURN_ERROR);
1.1       nicm       66:                }
                     67:        }
                     68:
                     69:        wp = TAILQ_FIRST(&w->panes);
                     70:        TAILQ_REMOVE(&w->panes, wp, entry);
1.3       nicm       71:        layout_free(w);
1.12      nicm       72:        window_destroy_panes(w);
1.1       nicm       73:        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                     74:        window_pane_resize(wp, w->sx, w->sy);
1.21      nicm       75:
                     76:        path = NULL;
1.32      nicm       77:        if (item->client != NULL && item->client->session == NULL)
                     78:                envent = environ_find(item->client->environ, "PATH");
1.21      nicm       79:        else
1.24      nicm       80:                envent = environ_find(s->environ, "PATH");
1.21      nicm       81:        if (envent != NULL)
                     82:                path = envent->value;
                     83:
1.33    ! nicm       84:        env = environ_for_session(s);
1.25      nicm       85:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
1.22      nicm       86:            s->tio, &cause) != 0) {
1.32      nicm       87:                cmdq_error(item, "respawn window failed: %s", cause);
1.15      nicm       88:                free(cause);
1.24      nicm       89:                environ_free(env);
1.29      nicm       90:                server_destroy_pane(wp, 0);
1.16      nicm       91:                return (CMD_RETURN_ERROR);
1.1       nicm       92:        }
1.33    ! nicm       93:        environ_free(env);
1.18      nicm       94:        layout_init(w, wp);
1.14      nicm       95:        window_pane_reset_mode(wp);
1.1       nicm       96:        screen_reinit(&wp->base);
1.14      nicm       97:        input_init(wp);
1.4       nicm       98:        window_set_active_pane(w, wp);
1.1       nicm       99:
                    100:        recalculate_sizes();
                    101:        server_redraw_window(w);
                    102:
1.16      nicm      103:        return (CMD_RETURN_NORMAL);
1.1       nicm      104: }