Annotation of embedaddon/tmux/osdep-linux.c, revision 1.1.1.1
1.1 misho 1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2009 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/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: /* On Linux, epoll doesn't work on /dev/null (yes, really). */
96: setenv("EVENT_NOEPOLL", "1", 1);
97: return (event_init());
98: }
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