cmd-respawn-pane.c

   1 /* $Id$ */
   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 <unistd.h>
  23
  24 #include "tmux.h"
  25
  26 /*
  27  * Respawn a pane (restart the command). Kill existing if -k given.
  28  */
  29
  30 int     cmd_respawn_pane_exec(struct cmd *, struct cmd_ctx *);
  31
  32 const struct cmd_entry cmd_respawn_pane_entry = {
  33         "respawn-pane", "respawnp",
  34         "kt:", 0, 1,
  35         "[-k] " CMD_TARGET_PANE_USAGE " [command]",
  36         0,
  37         NULL,
  38         NULL,
  39         cmd_respawn_pane_exec
  40 };
  41
  42 int
  43 cmd_respawn_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
  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
  54         if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
  55                 return (-1);
  56         w = wl->window;
  57
  58         if (!args_has(self->args, 'k') && wp->fd != -1) {
  59                 ctx->error(ctx, "pane still active: %s:%u.%u",
  60                     s->name, wl->idx, window_pane_index(w, wp));
  61                 return (-1);
  62         }
  63
  64         environ_init(&env);
  65         environ_copy(&global_environ, &env);
  66         environ_copy(&s->environ, &env);
  67         server_fill_environ(s, &env);
  68
  69         window_pane_reset_mode(wp);
  70         screen_reinit(&wp->base);
  71         input_init(wp);
  72
  73         if (args->argc != 0)
  74                 cmd = args->argv[0];
  75         else
  76                 cmd = NULL;
  77         if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
  78                 ctx->error(ctx, "respawn pane failed: %s", cause);
  79                 xfree(cause);
  80                 environ_free(&env);
  81                 return (-1);
  82         }
  83         wp->flags |= PANE_REDRAW;
  84         server_status_window(w);
  85
  86         environ_free(&env);
  87         return (0);
  88 }