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 <fcntl.h>
23 #include <procfs.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <unistd.h>
27
28 #include "tmux.h"
29
30 char *
osdep_get_name(__unused int fd,char * tty)31 osdep_get_name(__unused int fd, char *tty)
32 {
33 struct psinfo p;
34 struct stat st;
35 char *path;
36 ssize_t bytes;
37 int f;
38 pid_t pgrp;
39
40 if ((f = open(tty, O_RDONLY)) < 0)
41 return (NULL);
42
43 if (fstat(f, &st) != 0 || ioctl(f, TIOCGPGRP, &pgrp) != 0) {
44 close(f);
45 return (NULL);
46 }
47 close(f);
48
49 xasprintf(&path, "/proc/%u/psinfo", (u_int) pgrp);
50 f = open(path, O_RDONLY);
51 free(path);
52 if (f < 0)
53 return (NULL);
54
55 bytes = read(f, &p, sizeof(p));
56 close(f);
57 if (bytes != sizeof(p))
58 return (NULL);
59
60 if (p.pr_ttydev != st.st_rdev)
61 return (NULL);
62
63 return (xstrdup(p.pr_fname));
64 }
65
66 char *
osdep_get_cwd(int fd)67 osdep_get_cwd(int fd)
68 {
69 static char target[MAXPATHLEN + 1];
70 char *path;
71 const char *ttypath;
72 ssize_t n;
73 pid_t pgrp;
74 int retval, ttyfd;
75
76 if ((ttypath = ptsname(fd)) == NULL)
77 return (NULL);
78 if ((ttyfd = open(ttypath, O_RDONLY|O_NOCTTY)) == -1)
79 return (NULL);
80
81 retval = ioctl(ttyfd, TIOCGPGRP, &pgrp);
82 close(ttyfd);
83 if (retval == -1)
84 return (NULL);
85
86 xasprintf(&path, "/proc/%u/path/cwd", (u_int) pgrp);
87 n = readlink(path, target, MAXPATHLEN);
88 free(path);
89 if (n > 0) {
90 target[n] = '\0';
91 return (target);
92 }
93 return (NULL);
94 }
95
96 struct event_base *
osdep_event_init(void)97 osdep_event_init(void)
98 {
99 struct event_base *base;
100
101 /*
102 * On Illumos, evports don't seem to work properly. It is not clear if
103 * this a problem in libevent, with the way tmux uses file descriptors,
104 * or with some types of file descriptor. But using poll instead is
105 * fine.
106 */
107 setenv("EVENT_NOEVPORT", "1", 1);
108
109 base = event_init();
110 unsetenv("EVENT_NOEVPORT");
111 return (base);
112 }
113