cmd-respawn-pane.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
   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
  22 #include <stdlib.h>
  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
  31 enum cmd_retval  cmd_respawn_pane_exec(struct cmd *, struct cmd_q *);
  32
  33 const struct cmd_entry cmd_respawn_pane_entry = {
  34         "respawn-pane", "respawnp",
  35         "kt:", 0, 1,
  36         "[-k] " CMD_TARGET_PANE_USAGE " [command]",
  37         0,
  38         NULL,
  39         NULL,
  40         cmd_respawn_pane_exec
  41 };
  42
  43 enum cmd_retval
  44 cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
  45 {
  46         struct args             *args = self->args;
  47         struct winlink          *wl;
  48         struct window           *w;
  49         struct window_pane      *wp;
  50         struct session          *s;
  51         struct environ           env;
  52         const char              *cmd;
  53         char                    *cause;
  54         u_int                    idx;
  55
  56         if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
  57                 return (CMD_RETURN_ERROR);
  58         w = wl->window;
  59
  60         if (!args_has(self->args, 'k') && wp->fd != -1) {
  61                 if (window_pane_index(wp, &idx) != 0)
  62                         fatalx("index not found");
  63                 cmdq_error(cmdq, "pane still active: %s:%u.%u",
  64                     s->name, wl->idx, idx);
  65                 return (CMD_RETURN_ERROR);
  66         }
  67
  68         environ_init(&env);
  69         environ_copy(&global_environ, &env);
  70         environ_copy(&s->environ, &env);
  71         server_fill_environ(s, &env);
  72
  73         window_pane_reset_mode(wp);
  74         screen_reinit(&wp->base);
  75         input_init(wp);
  76
  77         if (args->argc != 0)
  78                 cmd = args->argv[0];
  79         else
  80                 cmd = NULL;
  81         if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
  82                 cmdq_error(cmdq, "respawn pane failed: %s", cause);
  83                 free(cause);
  84                 environ_free(&env);
  85                 return (CMD_RETURN_ERROR);
  86         }
  87         wp->flags |= PANE_REDRAW;
  88         server_status_window(w);
  89
  90         environ_free(&env);
  91         return (CMD_RETURN_NORMAL);
  92 }