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         cmd_respawn_pane_exec
  40 };
  41
  42 enum cmd_retval
  43 cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
  44 {
  45         struct args             *args = self->args;
  46         struct winlink          *wl;
  47         struct window           *w;
  48         struct window_pane      *wp;
  49         struct session          *s;
  50         struct environ           env;
  51         const char              *cmd;
  52         char                    *cause;
  53         u_int                    idx;
  54
  55         if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
  56                 return (CMD_RETURN_ERROR);
  57         w = wl->window;
  58
  59         if (!args_has(self->args, 'k') && wp->fd != -1) {
  60                 if (window_pane_index(wp, &idx) != 0)
  61                         fatalx("index not found");
  62                 cmdq_error(cmdq, "pane still active: %s:%u.%u",
  63                     s->name, wl->idx, idx);
  64                 return (CMD_RETURN_ERROR);
  65         }
  66
  67         environ_init(&env);
  68         environ_copy(&global_environ, &env);
  69         environ_copy(&s->environ, &env);
  70         server_fill_environ(s, &env);
  71
  72         window_pane_reset_mode(wp);
  73         screen_reinit(&wp->base);
  74         input_init(wp);
  75
  76         if (args->argc != 0)
  77                 cmd = args->argv[0];
  78         else
  79                 cmd = NULL;
  80         if (window_pane_spawn(wp, cmd, NULL, -1, &env, s->tio, &cause) != 0) {
  81                 cmdq_error(cmdq, "respawn pane failed: %s", cause);
  82                 free(cause);
  83                 environ_free(&env);
  84                 return (CMD_RETURN_ERROR);
  85         }
  86         wp->flags |= PANE_REDRAW;
  87         server_status_window(w);
  88
  89         environ_free(&env);
  90         return (CMD_RETURN_NORMAL);
  91 }