1 | /* $OpenBSD$ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2009 Nicholas Marriott <[email protected]> |
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 | #include <sys/param.h> |
22 | |
23 | #include <event.h> |
24 | #include <stdio.h> |
25 | #include <stdlib.h> |
26 | #include <unistd.h> |
27 | |
28 | #include "tmux.h" |
29 | |
30 | char * |
31 | osdep_get_name(int fd, __unused char *tty) |
32 | { |
33 | FILE *f; |
34 | char *path, *buf; |
35 | size_t len; |
36 | int ch; |
37 | pid_t pgrp; |
38 | |
39 | if ((pgrp = tcgetpgrp(fd)) == -1) |
40 | return (NULL); |
41 | |
42 | xasprintf(&path, "/proc/%lld/cmdline" , (long long) pgrp); |
43 | if ((f = fopen(path, "r" )) == NULL) { |
44 | free(path); |
45 | return (NULL); |
46 | } |
47 | free(path); |
48 | |
49 | len = 0; |
50 | buf = NULL; |
51 | while ((ch = fgetc(f)) != EOF) { |
52 | if (ch == '\0') |
53 | break; |
54 | buf = xrealloc(buf, len + 2); |
55 | buf[len++] = ch; |
56 | } |
57 | if (buf != NULL) |
58 | buf[len] = '\0'; |
59 | |
60 | fclose(f); |
61 | return (buf); |
62 | } |
63 | |
64 | char * |
65 | osdep_get_cwd(int fd) |
66 | { |
67 | static char target[MAXPATHLEN + 1]; |
68 | char *path; |
69 | pid_t pgrp, sid; |
70 | ssize_t n; |
71 | |
72 | if ((pgrp = tcgetpgrp(fd)) == -1) |
73 | return (NULL); |
74 | |
75 | xasprintf(&path, "/proc/%lld/cwd" , (long long) pgrp); |
76 | n = readlink(path, target, MAXPATHLEN); |
77 | free(path); |
78 | |
79 | if (n == -1 && ioctl(fd, TIOCGSID, &sid) != -1) { |
80 | xasprintf(&path, "/proc/%lld/cwd" , (long long) sid); |
81 | n = readlink(path, target, MAXPATHLEN); |
82 | free(path); |
83 | } |
84 | |
85 | if (n > 0) { |
86 | target[n] = '\0'; |
87 | return (target); |
88 | } |
89 | return (NULL); |
90 | } |
91 | |
92 | struct event_base * |
93 | osdep_event_init(void) |
94 | { |
95 | struct event_base *base; |
96 | |
97 | /* On Linux, epoll doesn't work on /dev/null (yes, really). */ |
98 | setenv("EVENT_NOEPOLL" , "1" , 1); |
99 | |
100 | base = event_init(); |
101 | unsetenv("EVENT_NOEPOLL" ); |
102 | return (base); |
103 | } |
104 | |