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Annotation of src/usr.bin/tmux/cmd-respawn-pane.c, Revision 1.21

1.21    ! nicm        1: /* $OpenBSD: cmd-respawn-pane.c,v 1.20 2016/01/19 15:59:12 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.20      nicm        4:  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        5:  * Copyright (c) 2011 Marcel P. Partap <mpartap@gmx.net>
                      6:  *
                      7:  * Permission to use, copy, modify, and distribute this software for any
                      8:  * purpose with or without fee is hereby granted, provided that the above
                      9:  * copyright notice and this permission notice appear in all copies.
                     10:  *
                     11:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     12:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     13:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     14:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     15:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     16:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     17:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     18:  */
                     19:
                     20: #include <sys/types.h>
                     21:
1.6       nicm       22: #include <stdlib.h>
1.1       nicm       23: #include <unistd.h>
                     24:
                     25: #include "tmux.h"
                     26:
                     27: /*
                     28:  * Respawn a pane (restart the command). Kill existing if -k given.
                     29:  */
                     30:
1.21    ! nicm       31: static enum cmd_retval  cmd_respawn_pane_exec(struct cmd *, struct cmd_q *);
1.1       nicm       32:
                     33: const struct cmd_entry cmd_respawn_pane_entry = {
1.18      nicm       34:        .name = "respawn-pane",
                     35:        .alias = "respawnp",
                     36:
                     37:        .args = { "kt:", 0, -1 },
                     38:        .usage = "[-k] " CMD_TARGET_PANE_USAGE " [command]",
                     39:
1.19      nicm       40:        .tflag = CMD_PANE,
                     41:
                     42:        .flags = 0,
1.18      nicm       43:        .exec = cmd_respawn_pane_exec
1.1       nicm       44: };
                     45:
1.21    ! nicm       46: static enum cmd_retval
1.8       nicm       47: cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       48: {
                     49:        struct args             *args = self->args;
1.17      nicm       50:        struct winlink          *wl = cmdq->state.tflag.wl;
                     51:        struct window           *w = wl->window;
                     52:        struct window_pane      *wp = cmdq->state.tflag.wp;
                     53:        struct session          *s = cmdq->state.tflag.s;
1.15      nicm       54:        struct environ          *env;
1.12      nicm       55:        const char              *path;
1.4       nicm       56:        char                    *cause;
                     57:        u_int                    idx;
1.11      nicm       58:        struct environ_entry    *envent;
1.1       nicm       59:
                     60:        if (!args_has(self->args, 'k') && wp->fd != -1) {
1.4       nicm       61:                if (window_pane_index(wp, &idx) != 0)
                     62:                        fatalx("index not found");
1.14      nicm       63:                cmdq_error(cmdq, "pane still active: %s:%d.%u",
1.4       nicm       64:                    s->name, wl->idx, idx);
1.7       nicm       65:                return (CMD_RETURN_ERROR);
1.1       nicm       66:        }
                     67:
1.15      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:        window_pane_reset_mode(wp);
1.2       nicm       74:        screen_reinit(&wp->base);
1.1       nicm       75:        input_init(wp);
                     76:
1.11      nicm       77:        path = NULL;
                     78:        if (cmdq->client != NULL && cmdq->client->session == NULL)
1.15      nicm       79:                envent = environ_find(cmdq->client->environ, "PATH");
1.11      nicm       80:        else
1.15      nicm       81:                envent = environ_find(s->environ, "PATH");
1.11      nicm       82:        if (envent != NULL)
                     83:                path = envent->value;
                     84:
1.16      nicm       85:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
1.12      nicm       86:            s->tio, &cause) != 0) {
1.8       nicm       87:                cmdq_error(cmdq, "respawn pane failed: %s", cause);
1.6       nicm       88:                free(cause);
1.15      nicm       89:                environ_free(env);
1.7       nicm       90:                return (CMD_RETURN_ERROR);
1.1       nicm       91:        }
                     92:        wp->flags |= PANE_REDRAW;
                     93:        server_status_window(w);
                     94:
1.15      nicm       95:        environ_free(env);
1.7       nicm       96:        return (CMD_RETURN_NORMAL);
1.1       nicm       97: }