Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.49
1.49 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.48 2013/03/24 09:54:10 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:
1.30 nicm 21: #include <pwd.h>
1.35 nicm 22: #include <stdlib.h>
1.11 nicm 23: #include <string.h>
24: #include <termios.h>
1.30 nicm 25: #include <unistd.h>
1.11 nicm 26:
1.1 nicm 27: #include "tmux.h"
28:
29: /*
30: * Create a new session and attach to the current terminal unless -d is given.
31: */
32:
1.45 nicm 33: enum cmd_retval cmd_new_session_check(struct args *);
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",
1.49 ! nicm 38: "AdDn:s:t:x:y:", 0, 1,
! 39: "[-AdD] [-n window-name] [-s session-name] " CMD_TARGET_SESSION_USAGE
1.47 nicm 40: " [-x width] [-y height] [command]",
1.34 nicm 41: CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
42: NULL,
43: cmd_new_session_check,
44: cmd_new_session_exec
1.1 nicm 45: };
46:
1.45 nicm 47: enum cmd_retval
1.34 nicm 48: cmd_new_session_check(struct args *args)
1.1 nicm 49: {
1.34 nicm 50: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
1.45 nicm 51: return (CMD_RETURN_ERROR);
52: return (CMD_RETURN_NORMAL);
1.1 nicm 53: }
54:
1.45 nicm 55: enum cmd_retval
1.48 nicm 56: cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 57: {
1.48 nicm 58: struct args *args = self->args;
59: struct client *c = cmdq->client;
60: struct session *s, *groupwith;
61: struct window *w;
62: struct environ env;
63: struct termios tio, *tiop;
64: struct passwd *pw;
65: const char *newname, *target, *update, *cwd, *errstr;
66: char *cmd, *cause;
67: int detached, idx;
68: u_int sx, sy;
69: int already_attached;
70:
1.34 nicm 71:
72: newname = args_get(args, 's');
1.38 nicm 73: if (newname != NULL) {
74: if (!session_check_name(newname)) {
1.48 nicm 75: cmdq_error(cmdq, "bad session name: %s", newname);
1.45 nicm 76: return (CMD_RETURN_ERROR);
1.38 nicm 77: }
78: if (session_find(newname) != NULL) {
1.49 ! nicm 79: if (args_has(args, 'A')) {
! 80: return (cmd_attach_session(cmdq, newname,
! 81: args_has(args, 'D'), 0));
! 82: }
1.48 nicm 83: cmdq_error(cmdq, "duplicate session: %s", newname);
1.45 nicm 84: return (CMD_RETURN_ERROR);
1.38 nicm 85: }
1.4 nicm 86: }
1.1 nicm 87:
1.34 nicm 88: target = args_get(args, 't');
89: if (target != NULL) {
1.48 nicm 90: groupwith = cmd_find_session(cmdq, target, 0);
1.34 nicm 91: if (groupwith == NULL)
1.45 nicm 92: return (CMD_RETURN_ERROR);
1.34 nicm 93: } else
94: groupwith = NULL;
1.21 nicm 95:
1.6 nicm 96: /* Set -d if no client. */
1.34 nicm 97: detached = args_has(args, 'd');
1.48 nicm 98: if (c == NULL)
1.6 nicm 99: detached = 1;
100:
1.48 nicm 101: /* Is this client already attached? */
102: already_attached = 0;
103: if (c != NULL && c->session != NULL)
104: already_attached = 1;
105:
1.15 nicm 106: /*
1.19 nicm 107: * Save the termios settings, part of which is used for new windows in
108: * this session.
1.15 nicm 109: *
110: * This is read again with tcgetattr() rather than using tty.tio as if
111: * detached, tty_open won't be called. Because of this, it must be done
112: * before opening the terminal as that calls tcsetattr() to prepare for
113: * tmux taking over.
114: */
1.48 nicm 115: if (!detached && !already_attached && c->tty.fd != -1) {
116: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 117: fatal("tcgetattr failed");
1.19 nicm 118: tiop = &tio;
1.15 nicm 119: } else
1.19 nicm 120: tiop = NULL;
1.15 nicm 121:
1.4 nicm 122: /* Open the terminal if necessary. */
1.48 nicm 123: if (!detached && !already_attached) {
124: if (server_client_open(c, NULL, &cause) != 0) {
125: cmdq_error(cmdq, "open terminal failed: %s", cause);
1.44 nicm 126: free(cause);
1.45 nicm 127: return (CMD_RETURN_ERROR);
1.1 nicm 128: }
129: }
130:
1.16 nicm 131: /* Get the new session working directory. */
1.48 nicm 132: if (c != NULL && c->cwd != NULL)
133: cwd = c->cwd;
1.30 nicm 134: else {
135: pw = getpwuid(getuid());
136: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
137: cwd = pw->pw_dir;
138: else
139: cwd = "/";
140: }
1.16 nicm 141:
142: /* Find new session size. */
1.48 nicm 143: if (c != NULL) {
144: sx = c->tty.sx;
145: sy = c->tty.sy;
1.39 nicm 146: } else {
1.4 nicm 147: sx = 80;
1.18 nicm 148: sy = 24;
1.39 nicm 149: }
1.48 nicm 150: if (detached && args_has(args, 'x')) {
151: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
152: if (errstr != NULL) {
153: cmdq_error(cmdq, "width %s", errstr);
154: return (CMD_RETURN_ERROR);
1.35 nicm 155: }
1.48 nicm 156: }
157: if (detached && args_has(args, 'y')) {
158: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
159: if (errstr != NULL) {
160: cmdq_error(cmdq, "height %s", errstr);
161: return (CMD_RETURN_ERROR);
1.35 nicm 162: }
1.1 nicm 163: }
1.7 nicm 164: if (sy > 0 && options_get_number(&global_s_options, "status"))
1.4 nicm 165: sy--;
166: if (sx == 0)
167: sx = 1;
168: if (sy == 0)
169: sy = 1;
1.16 nicm 170:
171: /* Figure out the command for the new window. */
1.34 nicm 172: if (target != NULL)
1.21 nicm 173: cmd = NULL;
1.34 nicm 174: else if (args->argc != 0)
175: cmd = args->argv[0];
1.1 nicm 176: else
1.7 nicm 177: cmd = options_get_string(&global_s_options, "default-command");
1.1 nicm 178:
1.10 nicm 179: /* Construct the environment. */
180: environ_init(&env);
181: update = options_get_string(&global_s_options, "update-environment");
1.48 nicm 182: if (c != NULL)
183: environ_update(update, &c->environ, &env);
1.11 nicm 184:
1.4 nicm 185: /* Create the new session. */
1.13 nicm 186: idx = -1 - options_get_number(&global_s_options, "base-index");
1.34 nicm 187: s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
1.1 nicm 188: if (s == NULL) {
1.48 nicm 189: cmdq_error(cmdq, "create session failed: %s", cause);
1.44 nicm 190: free(cause);
1.45 nicm 191: return (CMD_RETURN_ERROR);
1.1 nicm 192: }
1.10 nicm 193: environ_free(&env);
1.4 nicm 194:
1.16 nicm 195: /* Set the initial window name if one given. */
1.34 nicm 196: if (cmd != NULL && args_has(args, 'n')) {
1.16 nicm 197: w = s->curw->window;
1.40 nicm 198: window_set_name(w, args_get(args, 'n'));
1.16 nicm 199: options_set_number(&w->options, "automatic-rename", 0);
1.21 nicm 200: }
201:
202: /*
203: * If a target session is given, this is to be part of a session group,
204: * so add it to the group and synchronize.
205: */
206: if (groupwith != NULL) {
207: session_group_add(groupwith, s);
208: session_group_synchronize_to(s);
209: session_select(s, RB_ROOT(&s->windows)->idx);
1.1 nicm 210: }
211:
1.16 nicm 212: /*
213: * Set the client to the new session. If a command client exists, it is
214: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 215: */
1.25 nicm 216: if (!detached) {
1.48 nicm 217: if (!already_attached)
218: server_write_ready(c);
219: else if (c->session != NULL)
220: c->last_session = c->session;
221: c->session = s;
222: notify_attached_session_changed(c);
223: session_update_activity(s);
224: server_redraw_client(c);
1.1 nicm 225: }
226: recalculate_sizes();
1.22 nicm 227: server_update_socket();
1.26 nicm 228:
229: /*
230: * If there are still configuration file errors to display, put the new
231: * session's current window into more mode and display them now.
232: */
1.46 nicm 233: if (cfg_finished)
1.48 nicm 234: cfg_show_causes(s);
1.1 nicm 235:
1.48 nicm 236: if (!detached)
237: cmdq->client_exit = 0;
238: return (CMD_RETURN_NORMAL);
1.1 nicm 239: }
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