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tmux 2.4

    1: /* $OpenBSD$ */
    2: 
    3: /*
    4:  * Copyright (c) 2009 Todd Carson <toc@daybefore.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/param.h>
   20: #include <sys/stat.h>
   21: 
   22: #include <event.h>
   23: #include <fcntl.h>
   24: #include <procfs.h>
   25: #include <stdio.h>
   26: #include <stdlib.h>
   27: #include <unistd.h>
   28: 
   29: #include "tmux.h"
   30: 
   31: char *
   32: osdep_get_name(__unused int fd, char *tty)
   33: {
   34: 	struct psinfo	 p;
   35: 	struct stat	 st;
   36: 	char		*path;
   37: 	ssize_t		 bytes;
   38: 	int		 f;
   39: 	pid_t		 pgrp;
   40: 
   41: 	if ((f = open(tty, O_RDONLY)) < 0)
   42: 		return (NULL);
   43: 
   44: 	if (fstat(f, &st) != 0 || ioctl(f, TIOCGPGRP, &pgrp) != 0) {
   45: 		close(f);
   46: 		return (NULL);
   47: 	}
   48: 	close(f);
   49: 
   50: 	xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
   51: 	f = open(path, O_RDONLY);
   52: 	free(path);
   53: 	if (f < 0)
   54: 		return (NULL);
   55: 
   56: 	bytes = read(f, &p, sizeof(p));
   57: 	close(f);
   58: 	if (bytes != sizeof(p))
   59: 		return (NULL);
   60: 
   61: 	if (p.pr_ttydev != st.st_rdev)
   62: 		return (NULL);
   63: 
   64: 	return (xstrdup(p.pr_fname));
   65: }
   66: 
   67: char *
   68: osdep_get_cwd(int fd)
   69: {
   70: 	static char	 target[MAXPATHLEN + 1];
   71: 	char		*path;
   72: 	const char	*ttypath;
   73: 	ssize_t		 n;
   74: 	pid_t		 pgrp;
   75: 	int		 retval, ttyfd;
   76: 
   77: 	if ((ttypath = ptsname(fd)) == NULL)
   78: 		return (NULL);
   79: 	if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
   80: 		return (NULL);
   81: 
   82: 	retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
   83: 	close(ttyfd);
   84: 	if (retval == -1)
   85: 		return (NULL);
   86: 
   87: 	xasprintf(&path, "/proc/%u/path/cwd", (u_int) pgrp);
   88: 	n = readlink(path, target, MAXPATHLEN);
   89: 	free(path);
   90: 	if (n > 0) {
   91: 		target[n] = '\0';
   92: 		return (target);
   93: 	}
   94: 	return (NULL);
   95: }
   96: 
   97: struct event_base *
   98: osdep_event_init(void)
   99: {
  100: 	return (event_init());
  101: }