Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.58
1.58 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.57 2014/02/23 00:53:06 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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:
1.54 nicm 21: #include <errno.h>
22: #include <fcntl.h>
1.35 nicm 23: #include <stdlib.h>
1.11 nicm 24: #include <string.h>
25: #include <termios.h>
1.30 nicm 26: #include <unistd.h>
1.11 nicm 27:
1.1 nicm 28: #include "tmux.h"
29:
30: /*
31: * Create a new session and attach to the current terminal unless -d is given.
32: */
33:
1.48 nicm 34: enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmd_q *);
1.1 nicm 35:
36: const struct cmd_entry cmd_new_session_entry = {
37: "new-session", "new",
1.52 nicm 38: "Ac:dDF:n:Ps:t:x:y:", 0, 1,
39: "[-AdDP] [-c start-directory] [-F format] [-n window-name] "
40: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] [-y height] "
41: "[command]",
1.53 nicm 42: CMD_STARTSERVER|CMD_CANTNEST,
1.34 nicm 43: NULL,
44: cmd_new_session_exec
1.1 nicm 45: };
46:
1.45 nicm 47: enum cmd_retval
1.48 nicm 48: cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 49: {
1.50 nicm 50: struct args *args = self->args;
1.54 nicm 51: struct client *c = cmdq->client, *c0;
1.50 nicm 52: struct session *s, *groupwith;
53: struct window *w;
54: struct environ env;
55: struct termios tio, *tiop;
1.54 nicm 56: const char *newname, *target, *update, *errstr, *template;
1.50 nicm 57: char *cmd, *cause, *cp;
1.54 nicm 58: int detached, already_attached, idx, cwd, fd = -1;
1.50 nicm 59: u_int sx, sy;
60: struct format_tree *ft;
1.51 nicm 61:
62: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
63: cmdq_error(cmdq, "command or window name given with target");
64: return (CMD_RETURN_ERROR);
65: }
1.34 nicm 66:
67: newname = args_get(args, 's');
1.38 nicm 68: if (newname != NULL) {
69: if (!session_check_name(newname)) {
1.48 nicm 70: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 71: return (CMD_RETURN_ERROR);
1.38 nicm 72: }
73: if (session_find(newname) != NULL) {
1.49 nicm 74: if (args_has(args, 'A')) {
75: return (cmd_attach_session(cmdq, newname,
1.54 nicm 76: args_has(args, 'D'), 0, NULL));
1.49 nicm 77: }
1.48 nicm 78: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 79: return (CMD_RETURN_ERROR);
1.38 nicm 80: }
1.4 nicm 81: }
1.1 nicm 82:
1.34 nicm 83: target = args_get(args, 't');
84: if (target != NULL) {
1.48 nicm 85: groupwith = cmd_find_session(cmdq, target, 0);
1.34 nicm 86: if (groupwith == NULL)
1.45 nicm 87: return (CMD_RETURN_ERROR);
1.34 nicm 88: } else
89: groupwith = NULL;
1.21 nicm 90:
1.6 nicm 91: /* Set -d if no client. */
1.34 nicm 92: detached = args_has(args, 'd');
1.48 nicm 93: if (c == NULL)
1.6 nicm 94: detached = 1;
95:
1.48 nicm 96: /* Is this client already attached? */
97: already_attached = 0;
98: if (c != NULL && c->session != NULL)
99: already_attached = 1;
100:
1.54 nicm 101: /* Get the new session working directory. */
102: if (args_has(args, 'c')) {
103: ft = format_create();
104: if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
105: format_client(ft, c0);
106: cp = format_expand(ft, args_get(args, 'c'));
107: format_free(ft);
108:
1.56 nicm 109: if (cp != NULL && *cp != '\0') {
110: fd = open(cp, O_RDONLY|O_DIRECTORY);
111: free(cp);
112: if (fd == -1) {
113: cmdq_error(cmdq, "bad working directory: %s",
114: strerror(errno));
115: return (CMD_RETURN_ERROR);
116: }
117: } else if (cp != NULL)
118: free(cp);
1.54 nicm 119: cwd = fd;
1.55 nicm 120: } else if (c != NULL && c->session == NULL)
1.54 nicm 121: cwd = c->cwd;
122: else if ((c0 = cmd_current_client(cmdq)) != NULL)
123: cwd = c0->session->cwd;
124: else {
125: fd = open(".", O_RDONLY);
126: cwd = fd;
127: }
128:
1.15 nicm 129: /*
1.19 nicm 130: * Save the termios settings, part of which is used for new windows in
131: * this session.
1.15 nicm 132: *
133: * This is read again with tcgetattr() rather than using tty.tio as if
134: * detached, tty_open won't be called. Because of this, it must be done
135: * before opening the terminal as that calls tcsetattr() to prepare for
136: * tmux taking over.
137: */
1.48 nicm 138: if (!detached && !already_attached && c->tty.fd != -1) {
139: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 140: fatal("tcgetattr failed");
1.19 nicm 141: tiop = &tio;
1.15 nicm 142: } else
1.19 nicm 143: tiop = NULL;
1.15 nicm 144:
1.4 nicm 145: /* Open the terminal if necessary. */
1.48 nicm 146: if (!detached && !already_attached) {
1.57 nicm 147: if (server_client_open(c, &cause) != 0) {
1.48 nicm 148: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 149: free(cause);
1.54 nicm 150: goto error;
1.1 nicm 151: }
152: }
153:
1.16 nicm 154: /* Find new session size. */
1.48 nicm 155: if (c != NULL) {
156: sx = c->tty.sx;
157: sy = c->tty.sy;
1.39 nicm 158: } else {
1.4 nicm 159: sx = 80;
1.18 nicm 160: sy = 24;
1.39 nicm 161: }
1.48 nicm 162: if (detached && args_has(args, 'x')) {
163: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
164: if (errstr != NULL) {
165: cmdq_error(cmdq, "width %s", errstr);
1.54 nicm 166: goto error;
1.35 nicm 167: }
1.48 nicm 168: }
169: if (detached && args_has(args, 'y')) {
170: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
171: if (errstr != NULL) {
172: cmdq_error(cmdq, "height %s", errstr);
1.54 nicm 173: goto error;
1.35 nicm 174: }
1.1 nicm 175: }
1.7 nicm 176: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 177: sy--;
178: if (sx == 0)
179: sx = 1;
180: if (sy == 0)
181: sy = 1;
1.16 nicm 182:
183: /* Figure out the command for the new window. */
1.34 nicm 184: if (target != NULL)
1.21 nicm 185: cmd = NULL;
1.34 nicm 186: else if (args->argc != 0)
187: cmd = args->argv[0];
1.1 nicm 188: else
1.7 nicm 189: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 190:
1.10 nicm 191: /* Construct the environment. */
192: environ_init(&env);
193: update = options_get_string(&global_s_options, "update-environment");
1.48 nicm 194: if (c != NULL)
195: environ_update(update, &c->environ, &env);
1.11 nicm 196:
1.4 nicm 197: /* Create the new session. */
1.13 nicm 198: idx = -1 - options_get_number(&global_s_options, "base-index");
1.34 nicm 199: s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 200: if (s == NULL) {
1.48 nicm 201: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 202: free(cause);
1.54 nicm 203: goto error;
1.1 nicm 204: }
1.10 nicm 205: environ_free(&env);
1.4 nicm 206:
1.16 nicm 207: /* Set the initial window name if one given. */
1.34 nicm 208: if (cmd != NULL && args_has(args, 'n')) {
1.16 nicm 209: w = s->curw->window;
1.40 nicm 210: window_set_name(w, args_get(args, 'n'));
1.16 nicm 211: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 212: }
213:
214: /*
215: * If a target session is given, this is to be part of a session group,
216: * so add it to the group and synchronize.
217: */
218: if (groupwith != NULL) {
219: session_group_add(groupwith, s);
220: session_group_synchronize_to(s);
221: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 222: }
223:
1.16 nicm 224: /*
225: * Set the client to the new session. If a command client exists, it is
226: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 227: */
1.25 nicm 228: if (!detached) {
1.48 nicm 229: if (!already_attached)
230: server_write_ready(c);
231: else if (c->session != NULL)
232: c->last_session = c->session;
233: c->session = s;
234: notify_attached_session_changed(c);
235: session_update_activity(s);
236: server_redraw_client(c);
1.1 nicm 237: }
238: recalculate_sizes();
1.22 nicm 239: server_update_socket();
1.26 nicm 240:
241: /*
242: * If there are still configuration file errors to display, put the new
243: * session's current window into more mode and display them now.
244: */
1.46 nicm 245: if (cfg_finished)
1.48 nicm 246: cfg_show_causes(s);
1.50 nicm 247:
248: /* Print if requested. */
249: if (args_has(args, 'P')) {
250: if ((template = args_get(args, 'F')) == NULL)
251: template = NEW_SESSION_TEMPLATE;
252:
253: ft = format_create();
1.54 nicm 254: if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
255: format_client(ft, c0);
1.50 nicm 256: format_session(ft, s);
257:
258: cp = format_expand(ft, template);
259: cmdq_print(cmdq, "%s", cp);
260: free(cp);
261:
262: format_free(ft);
263: }
1.1 nicm 264:
1.48 nicm 265: if (!detached)
266: cmdq->client_exit = 0;
1.54 nicm 267:
268: if (fd != -1)
269: close(fd);
1.48 nicm 270: return (CMD_RETURN_NORMAL);
1.54 nicm 271:
272: error:
273: if (fd != -1)
274: close(fd);
275: return (CMD_RETURN_ERROR);
1.1 nicm 276: }
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