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tmux 2.4

    1: /* $OpenBSD$ */
    2: 
    3: /*
    4:  * Copyright (c) 2011 Nicholas Marriott <nicholas.marriott@gmail.com>
    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/param.h>
   20: #include <sys/procfs.h>
   21: 
   22: #include <stdlib.h>
   23: #include <string.h>
   24: #include <fcntl.h>
   25: 
   26: #include "tmux.h"
   27: 
   28: char *
   29: osdep_get_name(__unused int fd, char *tty)
   30: {
   31: 	struct psinfo	 p;
   32: 	char		*path;
   33: 	ssize_t		 bytes;
   34: 	int		 f, ttyfd, retval;
   35: 	pid_t		 pgrp;
   36: 
   37: 	if ((ttyfd = open(tty, O_RDONLY|O_NOCTTY)) == -1)
   38: 		return (NULL);
   39: 
   40: 	retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
   41: 	close(ttyfd);
   42: 	if (retval == -1)
   43: 		return (NULL);
   44: 
   45: 	xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
   46: 	f = open(path, O_RDONLY);
   47: 	free(path);
   48: 	if (f < 0)
   49: 		return (NULL);
   50: 
   51: 	bytes = read(f, &p, sizeof(p));
   52: 	close(f);
   53: 	if (bytes != sizeof(p))
   54: 		return (NULL);
   55: 
   56: 	return (xstrdup(p.pr_fname));
   57: }
   58: 
   59: char *
   60: osdep_get_cwd(int fd)
   61: {
   62: 	static char      target[MAXPATHLEN + 1];
   63: 	char            *path;
   64: 	const char      *ttypath;
   65: 	ssize_t          n;
   66: 	pid_t            pgrp;
   67: 	int              len, retval, ttyfd;
   68: 
   69: 	if ((ttypath = ptsname(fd)) == NULL)
   70: 		return (NULL);
   71: 	if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
   72: 		return (NULL);
   73: 
   74: 	retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
   75: 	close(ttyfd);
   76: 	if (retval == -1)
   77: 		return (NULL);
   78: 
   79: 	xasprintf(&path, "/proc/%u/cwd", (u_int) pgrp);
   80: 	n = readlink(path, target, MAXPATHLEN);
   81: 	free(path);
   82: 	if (n > 0) {
   83: 		target[n] = '\0';
   84: 		if ((len = strlen(target)) > 1 && target[len - 1] == '/')
   85: 			target[len - 1] = '\0';
   86: 		return (target);
   87: 	}
   88: 	return (NULL);
   89: }
   90: 
   91: struct event_base *
   92: osdep_event_init(void)
   93: {
   94: 	return (event_init());
   95: }