Annotation of src/usr.bin/tmux/cmd-new-session.c, Revision 1.107
1.107 ! nicm 1: /* $OpenBSD: cmd-new-session.c,v 1.106 2017/04/22 10:26:44 nicm Exp $ */
1.1 nicm 2:
3: /*
1.84 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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: */
1.63 nicm 33:
34: #define NEW_SESSION_TEMPLATE "#{session_name}:"
1.1 nicm 35:
1.92 nicm 36: static enum cmd_retval cmd_new_session_exec(struct cmd *, struct cmdq_item *);
1.1 nicm 37:
38: const struct cmd_entry cmd_new_session_entry = {
1.82 nicm 39: .name = "new-session",
40: .alias = "new",
41:
42: .args = { "Ac:dDEF:n:Ps:t:x:y:", 0, -1 },
43: .usage = "[-AdDEP] [-c start-directory] [-F format] [-n window-name] "
44: "[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] "
45: "[-y height] [command]",
46:
1.105 nicm 47: .target = { 't', CMD_FIND_SESSION, CMD_FIND_CANFAIL },
1.83 nicm 48:
49: .flags = CMD_STARTSERVER,
1.82 nicm 50: .exec = cmd_new_session_exec
1.1 nicm 51: };
52:
1.62 nicm 53: const struct cmd_entry cmd_has_session_entry = {
1.82 nicm 54: .name = "has-session",
55: .alias = "has",
56:
57: .args = { "t:", 0, 0 },
58: .usage = CMD_TARGET_SESSION_USAGE,
59:
1.105 nicm 60: .target = { 't', CMD_FIND_SESSION, 0 },
1.83 nicm 61:
62: .flags = 0,
1.82 nicm 63: .exec = cmd_new_session_exec
1.62 nicm 64: };
65:
1.88 nicm 66: static enum cmd_retval
1.92 nicm 67: cmd_new_session_exec(struct cmd *self, struct cmdq_item *item)
1.1 nicm 68: {
1.50 nicm 69: struct args *args = self->args;
1.92 nicm 70: struct client *c = item->client;
1.101 nicm 71: struct session *s, *as, *groupwith;
1.50 nicm 72: struct window *w;
1.75 nicm 73: struct environ *env;
1.50 nicm 74: struct termios tio, *tiop;
1.101 nicm 75: struct session_group *sg;
76: const char *newname, *errstr, *template, *group, *prefix;
1.96 nicm 77: const char *path, *cmd, *cwd, *to_free = NULL;
78: char **argv, *cause, *cp;
1.76 nicm 79: int detached, already_attached, idx, argc;
1.107 ! nicm 80: int is_control = 0;
1.50 nicm 81: u_int sx, sy;
1.59 nicm 82: struct environ_entry *envent;
1.90 nicm 83: struct cmd_find_state fs;
1.62 nicm 84:
85: if (self->entry == &cmd_has_session_entry) {
1.81 nicm 86: /*
1.106 nicm 87: * cmd_find_target() will fail if the session cannot be found,
88: * so always return success here.
1.81 nicm 89: */
1.62 nicm 90: return (CMD_RETURN_NORMAL);
91: }
1.51 nicm 92:
93: if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
1.92 nicm 94: cmdq_error(item, "command or window name given with target");
1.51 nicm 95: return (CMD_RETURN_ERROR);
96: }
1.34 nicm 97:
98: newname = args_get(args, 's');
1.38 nicm 99: if (newname != NULL) {
100: if (!session_check_name(newname)) {
1.92 nicm 101: cmdq_error(item, "bad session name: %s", newname);
1.45 nicm 102: return (CMD_RETURN_ERROR);
1.38 nicm 103: }
1.86 nicm 104: if ((as = session_find(newname)) != NULL) {
1.49 nicm 105: if (args_has(args, 'A')) {
1.92 nicm 106: return (cmd_attach_session(item,
1.106 nicm 107: newname, args_has(args, 'D'),
1.105 nicm 108: 0, NULL, args_has(args, 'E')));
1.49 nicm 109: }
1.92 nicm 110: cmdq_error(item, "duplicate session: %s", newname);
1.45 nicm 111: return (CMD_RETURN_ERROR);
1.38 nicm 112: }
1.4 nicm 113: }
1.1 nicm 114:
1.101 nicm 115: /* Is this going to be part of a session group? */
116: group = args_get(args, 't');
117: if (group != NULL) {
1.105 nicm 118: groupwith = item->target.s;
1.85 nicm 119: if (groupwith == NULL) {
1.101 nicm 120: if (!session_check_name(group)) {
121: cmdq_error(item, "bad group name: %s", group);
122: goto error;
123: }
124: sg = session_group_find(group);
125: } else
126: sg = session_group_contains(groupwith);
127: if (sg != NULL)
128: prefix = sg->name;
129: else if (groupwith != NULL)
130: prefix = groupwith->name;
131: else
132: prefix = group;
133: } else {
1.34 nicm 134: groupwith = NULL;
1.101 nicm 135: sg = NULL;
136: prefix = NULL;
137: }
1.21 nicm 138:
1.6 nicm 139: /* Set -d if no client. */
1.34 nicm 140: detached = args_has(args, 'd');
1.48 nicm 141: if (c == NULL)
1.6 nicm 142: detached = 1;
1.107 ! nicm 143: else if (c->flags & CLIENT_CONTROL)
! 144: is_control = 1;
1.6 nicm 145:
1.48 nicm 146: /* Is this client already attached? */
147: already_attached = 0;
148: if (c != NULL && c->session != NULL)
149: already_attached = 1;
150:
1.54 nicm 151: /* Get the new session working directory. */
152: if (args_has(args, 'c')) {
1.102 nicm 153: cwd = args_get(args, 'c');
154: to_free = cwd = format_single(item, cwd, c, NULL, NULL, NULL);
1.87 nicm 155: } else if (c != NULL && c->session == NULL && c->cwd != NULL)
1.54 nicm 156: cwd = c->cwd;
1.76 nicm 157: else
158: cwd = ".";
1.54 nicm 159:
1.15 nicm 160: /*
1.67 nicm 161: * If this is a new client, check for nesting and save the termios
162: * settings (part of which is used for new windows in this session).
1.15 nicm 163: *
1.67 nicm 164: * tcgetattr() is used rather than using tty.tio since if the client is
165: * detached, tty_open won't be called. It must be done before opening
166: * the terminal as that calls tcsetattr() to prepare for tmux taking
167: * over.
1.15 nicm 168: */
1.48 nicm 169: if (!detached && !already_attached && c->tty.fd != -1) {
1.92 nicm 170: if (server_client_check_nested(item->client)) {
171: cmdq_error(item, "sessions should be nested with care, "
1.67 nicm 172: "unset $TMUX to force");
173: return (CMD_RETURN_ERROR);
174: }
1.48 nicm 175: if (tcgetattr(c->tty.fd, &tio) != 0)
1.15 nicm 176: fatal("tcgetattr failed");
1.19 nicm 177: tiop = &tio;
1.15 nicm 178: } else
1.19 nicm 179: tiop = NULL;
1.15 nicm 180:
1.4 nicm 181: /* Open the terminal if necessary. */
1.48 nicm 182: if (!detached && !already_attached) {
1.57 nicm 183: if (server_client_open(c, &cause) != 0) {
1.92 nicm 184: cmdq_error(item, "open terminal failed: %s", cause);
1.44 nicm 185: free(cause);
1.54 nicm 186: goto error;
1.1 nicm 187: }
188: }
189:
1.16 nicm 190: /* Find new session size. */
1.107 ! nicm 191: if (!detached) {
1.48 nicm 192: sx = c->tty.sx;
193: sy = c->tty.sy;
1.107 ! nicm 194: if (!is_control &&
! 195: sy > 0 &&
! 196: options_get_number(global_s_options, "status"))
! 197: sy--;
1.39 nicm 198: } else {
1.4 nicm 199: sx = 80;
1.18 nicm 200: sy = 24;
1.39 nicm 201: }
1.107 ! nicm 202: if ((is_control || detached) && args_has(args, 'x')) {
1.48 nicm 203: sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
204: if (errstr != NULL) {
1.92 nicm 205: cmdq_error(item, "width %s", errstr);
1.54 nicm 206: goto error;
1.35 nicm 207: }
1.48 nicm 208: }
1.107 ! nicm 209: if ((is_control || detached) && args_has(args, 'y')) {
1.48 nicm 210: sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
211: if (errstr != NULL) {
1.92 nicm 212: cmdq_error(item, "height %s", errstr);
1.54 nicm 213: goto error;
1.35 nicm 214: }
1.1 nicm 215: }
1.4 nicm 216: if (sx == 0)
217: sx = 1;
218: if (sy == 0)
219: sy = 1;
1.16 nicm 220:
221: /* Figure out the command for the new window. */
1.60 nicm 222: argc = -1;
223: argv = NULL;
1.81 nicm 224: if (!args_has(args, 't') && args->argc != 0) {
1.60 nicm 225: argc = args->argc;
226: argv = args->argv;
1.101 nicm 227: } else if (sg == NULL && groupwith == NULL) {
1.74 nicm 228: cmd = options_get_string(global_s_options, "default-command");
1.60 nicm 229: if (cmd != NULL && *cmd != '\0') {
230: argc = 1;
1.96 nicm 231: argv = (char **)&cmd;
1.60 nicm 232: } else {
233: argc = 0;
234: argv = NULL;
235: }
236: }
1.1 nicm 237:
1.59 nicm 238: path = NULL;
239: if (c != NULL && c->session == NULL)
1.75 nicm 240: envent = environ_find(c->environ, "PATH");
1.59 nicm 241: else
1.75 nicm 242: envent = environ_find(global_environ, "PATH");
1.59 nicm 243: if (envent != NULL)
244: path = envent->value;
245:
1.10 nicm 246: /* Construct the environment. */
1.75 nicm 247: env = environ_create();
1.97 nicm 248: if (c != NULL && !args_has(args, 'E'))
249: environ_update(global_s_options, c->environ, env);
1.11 nicm 250:
1.4 nicm 251: /* Create the new session. */
1.74 nicm 252: idx = -1 - options_get_number(global_s_options, "base-index");
1.101 nicm 253: s = session_create(prefix, newname, argc, argv, path, cwd, env, tiop,
254: idx, sx, sy, &cause);
1.75 nicm 255: environ_free(env);
1.1 nicm 256: if (s == NULL) {
1.92 nicm 257: cmdq_error(item, "create session failed: %s", cause);
1.44 nicm 258: free(cause);
1.54 nicm 259: goto error;
1.1 nicm 260: }
1.4 nicm 261:
1.16 nicm 262: /* Set the initial window name if one given. */
1.60 nicm 263: if (argc >= 0 && args_has(args, 'n')) {
1.16 nicm 264: w = s->curw->window;
1.40 nicm 265: window_set_name(w, args_get(args, 'n'));
1.74 nicm 266: options_set_number(w->options, "automatic-rename", 0);
1.21 nicm 267: }
268:
269: /*
270: * If a target session is given, this is to be part of a session group,
271: * so add it to the group and synchronize.
272: */
1.101 nicm 273: if (group != NULL) {
274: if (sg == NULL) {
275: if (groupwith != NULL) {
276: sg = session_group_new(groupwith->name);
277: session_group_add(sg, groupwith);
278: } else
279: sg = session_group_new(group);
280: }
281: session_group_add(sg, s);
1.21 nicm 282: session_group_synchronize_to(s);
1.66 nicm 283: session_select(s, RB_MIN(winlinks, &s->windows)->idx);
1.1 nicm 284: }
1.94 nicm 285: notify_session("session-created", s);
1.1 nicm 286:
1.16 nicm 287: /*
288: * Set the client to the new session. If a command client exists, it is
289: * taking this session and needs to get MSG_READY and stay around.
1.4 nicm 290: */
1.25 nicm 291: if (!detached) {
1.73 nicm 292: if (!already_attached) {
293: if (~c->flags & CLIENT_CONTROL)
294: proc_send(c->peer, MSG_READY, -1, NULL, 0);
295: } else if (c->session != NULL)
1.48 nicm 296: c->last_session = c->session;
297: c->session = s;
1.103 nicm 298: if (~item->shared->flags & CMDQ_SHARED_REPEAT)
1.100 nicm 299: server_client_set_key_table(c, NULL);
1.69 nicm 300: status_timer_start(c);
1.93 nicm 301: notify_client("client-session-changed", c);
1.70 nicm 302: session_update_activity(s, NULL);
1.71 nicm 303: gettimeofday(&s->last_attached_time, NULL);
1.48 nicm 304: server_redraw_client(c);
1.1 nicm 305: }
306: recalculate_sizes();
1.22 nicm 307: server_update_socket();
1.26 nicm 308:
309: /*
310: * If there are still configuration file errors to display, put the new
311: * session's current window into more mode and display them now.
312: */
1.46 nicm 313: if (cfg_finished)
1.48 nicm 314: cfg_show_causes(s);
1.50 nicm 315:
316: /* Print if requested. */
317: if (args_has(args, 'P')) {
318: if ((template = args_get(args, 'F')) == NULL)
319: template = NEW_SESSION_TEMPLATE;
1.102 nicm 320: cp = format_single(item, template, c, s, NULL, NULL);
1.92 nicm 321: cmdq_print(item, "%s", cp);
1.50 nicm 322: free(cp);
323: }
1.89 nicm 324:
1.104 nicm 325: if (!detached) {
1.91 nicm 326: c->flags |= CLIENT_ATTACHED;
1.104 nicm 327: cmd_find_from_session(&item->shared->current, s);
328: }
1.54 nicm 329:
1.76 nicm 330: if (to_free != NULL)
331: free((void *)to_free);
1.90 nicm 332:
333: cmd_find_from_session(&fs, s);
1.92 nicm 334: hooks_insert(s->hooks, item, &fs, "after-new-session");
1.91 nicm 335:
1.48 nicm 336: return (CMD_RETURN_NORMAL);
1.54 nicm 337:
338: error:
1.76 nicm 339: if (to_free != NULL)
340: free((void *)to_free);
1.54 nicm 341: return (CMD_RETURN_ERROR);
1.1 nicm 342: }
![[BACK]](/icons/back.gif){kind=icon}
Return to cmd-new-session.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux