Annotation of src/usr.bin/tmux/tmux.c, Revision 1.52
1.52 ! nicm 1: /* $OpenBSD: tmux.c,v 1.51 2009/10/22 10:04:07 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: #include <sys/stat.h>
21:
22: #include <errno.h>
23: #include <paths.h>
24: #include <pwd.h>
25: #include <signal.h>
26: #include <stdlib.h>
27: #include <string.h>
28: #include <syslog.h>
29: #include <unistd.h>
30:
31: #include "tmux.h"
32:
33: #ifdef DEBUG
34: const char *malloc_options = "AFGJPX";
35: #endif
36:
37: volatile sig_atomic_t sigwinch;
38: volatile sig_atomic_t sigterm;
39: volatile sig_atomic_t sigcont;
40: volatile sig_atomic_t sigchld;
41: volatile sig_atomic_t sigusr1;
42: volatile sig_atomic_t sigusr2;
43:
44: char *cfg_file;
1.12 nicm 45: struct options global_s_options; /* session options */
46: struct options global_w_options; /* window options */
1.29 nicm 47: struct environ global_environ;
1.1 nicm 48:
49: int debug_level;
50: int be_quiet;
51: time_t start_time;
52: char *socket_path;
1.41 nicm 53: int login_shell;
1.1 nicm 54:
55: __dead void usage(void);
1.50 nicm 56: void fill_session(struct msg_command_data *);
1.1 nicm 57: char *makesockpath(const char *);
1.50 nicm 58: int dispatch_imsg(struct imsgbuf *, const char *, int *);
1.46 nicm 59: __dead void shell_exec(const char *, const char *);
1.1 nicm 60:
61: __dead void
62: usage(void)
63: {
1.4 sobrado 64: fprintf(stderr,
1.52 ! nicm 65: "usage: %s [-28lquv] [-c shell-command] [-f file] [-L socket-name]\n"
1.41 nicm 66: " [-S socket-path] [command [flags]]\n",
1.1 nicm 67: __progname);
68: exit(1);
69: }
70:
71: void
72: logfile(const char *name)
73: {
74: char *path;
75:
76: log_close();
77: if (debug_level > 0) {
1.32 nicm 78: xasprintf(&path, "tmux-%s-%ld.log", name, (long) getpid());
1.1 nicm 79: log_open_file(debug_level, path);
80: xfree(path);
81: }
82: }
83:
84: void
85: sighandler(int sig)
86: {
87: int saved_errno;
88:
89: saved_errno = errno;
90: switch (sig) {
91: case SIGWINCH:
92: sigwinch = 1;
93: break;
94: case SIGTERM:
95: sigterm = 1;
96: break;
97: case SIGCHLD:
98: sigchld = 1;
99: break;
100: case SIGCONT:
101: sigcont = 1;
102: break;
103: case SIGUSR1:
104: sigusr1 = 1;
105: break;
106: case SIGUSR2:
107: sigusr2 = 1;
108: break;
109: }
110: errno = saved_errno;
111: }
112:
113: void
114: siginit(void)
115: {
116: struct sigaction act;
117:
118: memset(&act, 0, sizeof act);
119: sigemptyset(&act.sa_mask);
120: act.sa_flags = SA_RESTART;
121:
122: act.sa_handler = SIG_IGN;
123: if (sigaction(SIGPIPE, &act, NULL) != 0)
124: fatal("sigaction failed");
125: if (sigaction(SIGINT, &act, NULL) != 0)
126: fatal("sigaction failed");
127: if (sigaction(SIGTSTP, &act, NULL) != 0)
128: fatal("sigaction failed");
129: if (sigaction(SIGQUIT, &act, NULL) != 0)
130: fatal("sigaction failed");
131:
132: act.sa_handler = sighandler;
133: if (sigaction(SIGWINCH, &act, NULL) != 0)
134: fatal("sigaction failed");
135: if (sigaction(SIGTERM, &act, NULL) != 0)
136: fatal("sigaction failed");
137: if (sigaction(SIGCHLD, &act, NULL) != 0)
138: fatal("sigaction failed");
139: if (sigaction(SIGUSR1, &act, NULL) != 0)
140: fatal("sigaction failed");
141: if (sigaction(SIGUSR2, &act, NULL) != 0)
142: fatal("sigaction failed");
143: }
144:
145: void
146: sigreset(void)
147: {
148: struct sigaction act;
149:
150: memset(&act, 0, sizeof act);
151: sigemptyset(&act.sa_mask);
152:
153: act.sa_handler = SIG_DFL;
154: if (sigaction(SIGPIPE, &act, NULL) != 0)
155: fatal("sigaction failed");
156: if (sigaction(SIGUSR1, &act, NULL) != 0)
157: fatal("sigaction failed");
158: if (sigaction(SIGUSR2, &act, NULL) != 0)
159: fatal("sigaction failed");
160: if (sigaction(SIGINT, &act, NULL) != 0)
161: fatal("sigaction failed");
162: if (sigaction(SIGTSTP, &act, NULL) != 0)
163: fatal("sigaction failed");
164: if (sigaction(SIGQUIT, &act, NULL) != 0)
165: fatal("sigaction failed");
166: if (sigaction(SIGWINCH, &act, NULL) != 0)
167: fatal("sigaction failed");
168: if (sigaction(SIGTERM, &act, NULL) != 0)
169: fatal("sigaction failed");
170: if (sigaction(SIGCHLD, &act, NULL) != 0)
171: fatal("sigaction failed");
172: }
173:
1.39 nicm 174: const char *
175: getshell(void)
176: {
177: struct passwd *pw;
178: const char *shell;
179:
180: shell = getenv("SHELL");
181: if (checkshell(shell))
182: return (shell);
183:
184: pw = getpwuid(getuid());
185: if (pw != NULL && checkshell(pw->pw_shell))
186: return (pw->pw_shell);
187:
188: return (_PATH_BSHELL);
189: }
190:
191: int
192: checkshell(const char *shell)
193: {
194: if (shell == NULL || *shell == '\0' || areshell(shell))
195: return (0);
196: if (access(shell, X_OK) != 0)
197: return (0);
198: return (1);
199: }
200:
201: int
202: areshell(const char *shell)
203: {
204: const char *progname, *ptr;
205:
206: if ((ptr = strrchr(shell, '/')) != NULL)
207: ptr++;
208: else
209: ptr = shell;
210: progname = __progname;
211: if (*progname == '-')
212: progname++;
213: if (strcmp(ptr, progname) == 0)
214: return (1);
215: return (0);
216: }
217:
1.50 nicm 218: void
219: fill_session(struct msg_command_data *data)
220: {
221: char *env, *ptr1, *ptr2, buf[256];
222: size_t len;
223: const char *errstr;
224: long long ll;
225:
226: data->pid = -1;
227: if ((env = getenv("TMUX")) == NULL)
228: return;
229:
230: if ((ptr2 = strrchr(env, ',')) == NULL || ptr2 == env)
231: return;
232: for (ptr1 = ptr2 - 1; ptr1 > env && *ptr1 != ','; ptr1--)
233: ;
234: if (*ptr1 != ',')
235: return;
236: ptr1++;
237: ptr2++;
238:
239: len = ptr2 - ptr1 - 1;
240: if (len > (sizeof buf) - 1)
241: return;
242: memcpy(buf, ptr1, len);
243: buf[len] = '\0';
244:
245: ll = strtonum(buf, 0, LONG_MAX, &errstr);
246: if (errstr != NULL)
247: return;
248: data->pid = ll;
249:
250: ll = strtonum(ptr2, 0, UINT_MAX, &errstr);
251: if (errstr != NULL)
252: return;
253: data->idx = ll;
254: }
255:
1.1 nicm 256: char *
257: makesockpath(const char *label)
258: {
259: char base[MAXPATHLEN], *path;
260: struct stat sb;
261: u_int uid;
262:
263: uid = getuid();
1.32 nicm 264: xsnprintf(base, MAXPATHLEN, "%s/tmux-%d", _PATH_TMP, uid);
1.1 nicm 265:
266: if (mkdir(base, S_IRWXU) != 0 && errno != EEXIST)
267: return (NULL);
268:
269: if (lstat(base, &sb) != 0)
270: return (NULL);
271: if (!S_ISDIR(sb.st_mode)) {
272: errno = ENOTDIR;
273: return (NULL);
274: }
275: if (sb.st_uid != uid || (sb.st_mode & (S_IRWXG|S_IRWXO)) != 0) {
276: errno = EACCES;
277: return (NULL);
278: }
279:
280: xasprintf(&path, "%s/%s", base, label);
281: return (path);
282: }
283:
284: int
285: main(int argc, char **argv)
286: {
1.51 nicm 287: struct cmd_list *cmdlist;
288: struct cmd *cmd;
289: struct pollfd pfd;
290: enum msgtype msg;
291: struct passwd *pw;
292: struct options *so, *wo;
293: struct keylist *keylist;
294: struct imsgbuf *ibuf;
295: struct msg_command_data cmddata;
296: char *s, *shellcmd, *path, *label, *home, *cause;
297: char cwd[MAXPATHLEN], **var;
298: void *buf;
299: size_t len;
300: int nfds, retcode, opt, flags, cmdflags = 0;
1.1 nicm 301:
1.45 nicm 302: flags = 0;
1.46 nicm 303: shellcmd = label = path = NULL;
1.41 nicm 304: login_shell = (**argv == '-');
1.46 nicm 305: while ((opt = getopt(argc, argv, "28c:df:lL:qS:uUv")) != -1) {
1.41 nicm 306: switch (opt) {
1.1 nicm 307: case '2':
308: flags |= IDENTIFY_256COLOURS;
309: flags &= ~IDENTIFY_88COLOURS;
310: break;
311: case '8':
312: flags |= IDENTIFY_88COLOURS;
313: flags &= ~IDENTIFY_256COLOURS;
314: break;
1.46 nicm 315: case 'c':
316: if (shellcmd != NULL)
317: xfree(shellcmd);
318: shellcmd = xstrdup(optarg);
1.37 nicm 319: break;
1.1 nicm 320: case 'f':
1.42 nicm 321: if (cfg_file != NULL)
1.2 ray 322: xfree(cfg_file);
1.1 nicm 323: cfg_file = xstrdup(optarg);
1.41 nicm 324: break;
325: case 'l':
326: login_shell = 1;
1.1 nicm 327: break;
328: case 'L':
329: if (label != NULL)
330: xfree(label);
331: label = xstrdup(optarg);
332: break;
1.37 nicm 333: case 'q':
334: be_quiet = 1;
335: break;
1.1 nicm 336: case 'S':
337: if (path != NULL)
338: xfree(path);
339: path = xstrdup(optarg);
340: break;
341: case 'u':
342: flags |= IDENTIFY_UTF8;
343: break;
344: case 'v':
345: debug_level++;
346: break;
347: default:
348: usage();
349: }
350: }
351: argc -= optind;
352: argv += optind;
353:
1.46 nicm 354: if (shellcmd != NULL && argc != 0)
355: usage();
356:
1.1 nicm 357: log_open_tty(debug_level);
358: siginit();
359:
1.15 nicm 360: if (!(flags & IDENTIFY_UTF8)) {
361: /*
362: * If the user has set whichever of LC_ALL, LC_CTYPE or LANG
363: * exist (in that order) to contain UTF-8, it is a safe
364: * assumption that either they are using a UTF-8 terminal, or
365: * if not they know that output from UTF-8-capable programs may
366: * be wrong.
367: */
368: if ((s = getenv("LC_ALL")) == NULL) {
369: if ((s = getenv("LC_CTYPE")) == NULL)
370: s = getenv("LANG");
371: }
1.26 nicm 372: if (s != NULL && (strcasestr(s, "UTF-8") != NULL ||
373: strcasestr(s, "UTF8") != NULL))
1.15 nicm 374: flags |= IDENTIFY_UTF8;
375: }
376:
1.42 nicm 377: environ_init(&global_environ);
378: for (var = environ; *var != NULL; var++)
379: environ_put(&global_environ, *var);
380:
1.12 nicm 381: options_init(&global_s_options, NULL);
1.42 nicm 382: so = &global_s_options;
383: options_set_number(so, "base-index", 0);
384: options_set_number(so, "bell-action", BELL_ANY);
385: options_set_number(so, "buffer-limit", 9);
386: options_set_string(so, "default-command", "%s", "");
387: options_set_string(so, "default-shell", "%s", getshell());
388: options_set_string(so, "default-terminal", "screen");
389: options_set_number(so, "display-panes-colour", 4);
390: options_set_number(so, "display-panes-time", 1000);
391: options_set_number(so, "display-time", 750);
392: options_set_number(so, "history-limit", 2000);
393: options_set_number(so, "lock-after-time", 0);
1.45 nicm 394: options_set_string(so, "lock-command", "lock -np");
1.48 nicm 395: options_set_number(so, "lock-server", 1);
1.42 nicm 396: options_set_number(so, "message-attr", 0);
397: options_set_number(so, "message-bg", 3);
398: options_set_number(so, "message-fg", 0);
1.49 nicm 399: options_set_number(so, "mouse-select-pane", 0);
1.42 nicm 400: options_set_number(so, "repeat-time", 500);
401: options_set_number(so, "set-remain-on-exit", 0);
402: options_set_number(so, "set-titles", 0);
1.43 nicm 403: options_set_string(so, "set-titles-string", "#S:#I:#W - \"#T\"");
1.42 nicm 404: options_set_number(so, "status", 1);
405: options_set_number(so, "status-attr", 0);
406: options_set_number(so, "status-bg", 2);
407: options_set_number(so, "status-fg", 0);
408: options_set_number(so, "status-interval", 15);
409: options_set_number(so, "status-justify", 0);
410: options_set_number(so, "status-keys", MODEKEY_EMACS);
411: options_set_string(so, "status-left", "[#S]");
412: options_set_number(so, "status-left-attr", 0);
413: options_set_number(so, "status-left-bg", 8);
414: options_set_number(so, "status-left-fg", 8);
415: options_set_number(so, "status-left-length", 10);
416: options_set_string(so, "status-right", "\"#22T\" %%H:%%M %%d-%%b-%%y");
417: options_set_number(so, "status-right-attr", 0);
418: options_set_number(so, "status-right-bg", 8);
419: options_set_number(so, "status-right-fg", 8);
420: options_set_number(so, "status-right-length", 40);
421: options_set_string(so, "terminal-overrides",
422: "*88col*:colors=88,*256col*:colors=256");
423: options_set_string(so, "update-environment", "DISPLAY "
1.35 nicm 424: "WINDOWID SSH_ASKPASS SSH_AUTH_SOCK SSH_AGENT_PID SSH_CONNECTION");
1.42 nicm 425: options_set_number(so, "visual-activity", 0);
426: options_set_number(so, "visual-bell", 0);
427: options_set_number(so, "visual-content", 0);
1.44 nicm 428:
429: keylist = xmalloc(sizeof *keylist);
430: ARRAY_INIT(keylist);
431: ARRAY_ADD(keylist, '\002');
432: options_set_data(so, "prefix", keylist, xfree);
1.1 nicm 433:
1.12 nicm 434: options_init(&global_w_options, NULL);
1.42 nicm 435: wo = &global_w_options;
436: options_set_number(wo, "aggressive-resize", 0);
437: options_set_number(wo, "automatic-rename", 1);
438: options_set_number(wo, "clock-mode-colour", 4);
439: options_set_number(wo, "clock-mode-style", 1);
440: options_set_number(wo, "force-height", 0);
441: options_set_number(wo, "force-width", 0);
442: options_set_number(wo, "main-pane-height", 24);
443: options_set_number(wo, "main-pane-width", 81);
444: options_set_number(wo, "mode-attr", 0);
445: options_set_number(wo, "mode-bg", 3);
446: options_set_number(wo, "mode-fg", 0);
447: options_set_number(wo, "mode-keys", MODEKEY_EMACS);
448: options_set_number(wo, "mode-mouse", 0);
449: options_set_number(wo, "monitor-activity", 0);
450: options_set_string(wo, "monitor-content", "%s", "");
451: options_set_number(wo, "window-status-attr", 0);
452: options_set_number(wo, "window-status-bg", 8);
453: options_set_number(wo, "window-status-current-attr", 0);
454: options_set_number(wo, "window-status-current-bg", 8);
455: options_set_number(wo, "window-status-current-fg", 8);
456: options_set_number(wo, "window-status-fg", 8);
457: options_set_number(wo, "xterm-keys", 0);
458: options_set_number(wo, "remain-on-exit", 0);
1.47 nicm 459: options_set_number(wo, "synchronize-panes", 0);
1.42 nicm 460:
461: if (flags & IDENTIFY_UTF8) {
462: options_set_number(so, "status-utf8", 1);
463: options_set_number(wo, "utf8", 1);
464: } else {
465: options_set_number(so, "status-utf8", 0);
466: options_set_number(wo, "utf8", 0);
467: }
468:
469: if (getcwd(cwd, sizeof cwd) == NULL) {
470: pw = getpwuid(getuid());
471: if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
472: strlcpy(cwd, pw->pw_dir, sizeof cwd);
473: else
474: strlcpy(cwd, "/", sizeof cwd);
475: }
476: options_set_string(so, "default-path", "%s", cwd);
1.1 nicm 477:
478: if (cfg_file == NULL) {
479: home = getenv("HOME");
480: if (home == NULL || *home == '\0') {
481: pw = getpwuid(getuid());
482: if (pw != NULL)
483: home = pw->pw_dir;
484: }
485: xasprintf(&cfg_file, "%s/%s", home, DEFAULT_CFG);
486: if (access(cfg_file, R_OK) != 0) {
487: xfree(cfg_file);
488: cfg_file = NULL;
489: }
490: } else {
491: if (access(cfg_file, R_OK) != 0) {
492: log_warn("%s", cfg_file);
493: exit(1);
494: }
495: }
1.21 nicm 496:
1.1 nicm 497: if (label == NULL)
498: label = xstrdup("default");
499: if (path == NULL && (path = makesockpath(label)) == NULL) {
500: log_warn("can't create socket");
501: exit(1);
502: }
503: xfree(label);
504:
1.46 nicm 505: if (shellcmd != NULL) {
506: msg = MSG_SHELL;
507: buf = NULL;
508: len = 0;
1.51 nicm 509: } else {
510: fill_session(&cmddata);
511:
512: cmddata.argc = argc;
513: if (cmd_pack_argv(
514: argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
515: log_warnx("command too long");
516: exit(1);
517: }
518:
519: msg = MSG_COMMAND;
520: buf = &cmddata;
521: len = sizeof cmddata;
522: }
1.21 nicm 523:
1.46 nicm 524: if (shellcmd != NULL)
525: cmdflags |= CMD_STARTSERVER;
526: else if (argc == 0) /* new-session is the default */
1.30 nicm 527: cmdflags |= CMD_STARTSERVER|CMD_SENDENVIRON;
1.21 nicm 528: else {
529: /*
530: * It sucks parsing the command string twice (in client and
531: * later in server) but it is necessary to get the start server
532: * flag.
533: */
534: if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
535: log_warnx("%s", cause);
536: exit(1);
1.1 nicm 537: }
1.21 nicm 538: cmdflags &= ~CMD_STARTSERVER;
1.1 nicm 539: TAILQ_FOREACH(cmd, cmdlist, qentry) {
1.29 nicm 540: if (cmd->entry->flags & CMD_STARTSERVER)
1.20 nicm 541: cmdflags |= CMD_STARTSERVER;
1.29 nicm 542: if (cmd->entry->flags & CMD_SENDENVIRON)
543: cmdflags |= CMD_SENDENVIRON;
1.1 nicm 544: }
1.21 nicm 545: cmd_list_free(cmdlist);
1.1 nicm 546: }
547:
1.50 nicm 548: if ((ibuf = client_init(path, cmdflags, flags)) == NULL)
1.1 nicm 549: exit(1);
550: xfree(path);
551:
1.50 nicm 552: imsg_compose(ibuf, msg, PROTOCOL_VERSION, -1, -1, buf, len);
1.1 nicm 553:
554: retcode = 0;
555: for (;;) {
1.50 nicm 556: pfd.fd = ibuf->fd;
1.1 nicm 557: pfd.events = POLLIN;
1.50 nicm 558: if (ibuf->w.queued != 0)
1.1 nicm 559: pfd.events |= POLLOUT;
560:
1.31 nicm 561: if ((nfds = poll(&pfd, 1, INFTIM)) == -1) {
1.1 nicm 562: if (errno == EAGAIN || errno == EINTR)
563: continue;
564: fatal("poll failed");
565: }
1.31 nicm 566: if (nfds == 0)
567: continue;
568:
569: if (pfd.revents & (POLLERR|POLLHUP|POLLNVAL))
570: fatalx("socket error");
571:
572: if (pfd.revents & POLLIN) {
1.50 nicm 573: if (dispatch_imsg(ibuf, shellcmd, &retcode) != 0)
1.31 nicm 574: break;
575: }
576:
577: if (pfd.revents & POLLOUT) {
1.50 nicm 578: if (msgbuf_write(&ibuf->w) < 0)
1.31 nicm 579: fatalx("msgbuf_write failed");
580: }
581: }
582:
583: options_free(&global_s_options);
584: options_free(&global_w_options);
585:
586: return (retcode);
587: }
588:
589: int
1.50 nicm 590: dispatch_imsg(struct imsgbuf *ibuf, const char *shellcmd, int *retcode)
1.31 nicm 591: {
592: struct imsg imsg;
593: ssize_t n, datalen;
594: struct msg_print_data printdata;
1.46 nicm 595: struct msg_shell_data shelldata;
1.1 nicm 596:
1.50 nicm 597: if ((n = imsg_read(ibuf)) == -1 || n == 0)
1.31 nicm 598: fatalx("imsg_read failed");
1.1 nicm 599:
1.31 nicm 600: for (;;) {
1.50 nicm 601: if ((n = imsg_get(ibuf, &imsg)) == -1)
1.31 nicm 602: fatalx("imsg_get failed");
603: if (n == 0)
604: return (0);
605: datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
1.1 nicm 606:
1.31 nicm 607: switch (imsg.hdr.type) {
1.1 nicm 608: case MSG_EXIT:
609: case MSG_SHUTDOWN:
1.31 nicm 610: if (datalen != 0)
611: fatalx("bad MSG_EXIT size");
612:
613: return (-1);
1.1 nicm 614: case MSG_ERROR:
1.31 nicm 615: *retcode = 1;
1.1 nicm 616: /* FALLTHROUGH */
617: case MSG_PRINT:
1.31 nicm 618: if (datalen != sizeof printdata)
1.1 nicm 619: fatalx("bad MSG_PRINT size");
1.31 nicm 620: memcpy(&printdata, imsg.data, sizeof printdata);
621: printdata.msg[(sizeof printdata.msg) - 1] = '\0';
1.21 nicm 622:
623: log_info("%s", printdata.msg);
1.31 nicm 624: break;
1.1 nicm 625: case MSG_READY:
1.31 nicm 626: if (datalen != 0)
627: fatalx("bad MSG_READY size");
628:
1.50 nicm 629: client_main(); /* doesn't return */
1.31 nicm 630: case MSG_VERSION:
631: if (datalen != 0)
632: fatalx("bad MSG_VERSION size");
633:
634: log_warnx("protocol version mismatch (client %u, "
635: "server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
636: *retcode = 1;
637: return (-1);
1.46 nicm 638: case MSG_SHELL:
639: if (datalen != sizeof shelldata)
640: fatalx("bad MSG_SHELL size");
641: memcpy(&shelldata, imsg.data, sizeof shelldata);
642: shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
643:
644: shell_exec(shelldata.shell, shellcmd);
1.1 nicm 645: default:
1.31 nicm 646: fatalx("unexpected message");
1.1 nicm 647: }
1.31 nicm 648:
649: imsg_free(&imsg);
1.1 nicm 650: }
1.46 nicm 651: }
652:
653: __dead void
654: shell_exec(const char *shell, const char *shellcmd)
655: {
656: const char *shellname, *ptr;
657: char *argv0;
658:
659: sigreset();
660:
661: ptr = strrchr(shell, '/');
662: if (ptr != NULL && *(ptr + 1) != '\0')
663: shellname = ptr + 1;
664: else
665: shellname = shell;
666: if (login_shell)
667: xasprintf(&argv0, "-%s", shellname);
668: else
669: xasprintf(&argv0, "%s", shellname);
670: setenv("SHELL", shell, 1);
671:
672: execl(shell, argv0, "-c", shellcmd, (char *) NULL);
673: fatal("execl failed");
1.1 nicm 674: }
![[BACK]](/icons/back.gif){kind=icon}
Return to tmux.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux