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osdep-linux.c    98 lines (82 with data), 2.2 kB

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/* $Id$ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <event.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "tmux.h"
char *
osdep_get_name(int fd, unused char *tty)
{
FILE *f;
char *path, *buf;
size_t len;
int ch;
pid_t pgrp;
if ((pgrp = tcgetpgrp(fd)) == -1)
return (NULL);
xasprintf(&path, "/proc/%lld/cmdline", (long long) pgrp);
if ((f = fopen(path, "r")) == NULL) {
free(path);
return (NULL);
}
free(path);
len = 0;
buf = NULL;
while ((ch = fgetc(f)) != EOF) {
if (ch == '\0')
break;
buf = xrealloc(buf, 1, len + 2);
buf[len++] = ch;
}
if (buf != NULL)
buf[len] = '\0';
fclose(f);
return (buf);
}
char *
osdep_get_cwd(int fd)
{
static char target[MAXPATHLEN + 1];
char *path;
pid_t pgrp, sid;
ssize_t n;
if ((pgrp = tcgetpgrp(fd)) == -1)
return (NULL);
xasprintf(&path, "/proc/%lld/cwd", (long long) pgrp);
n = readlink(path, target, MAXPATHLEN);
free(path);
if (n == -1 && ioctl(fd, TIOCGSID, &sid) != -1) {
xasprintf(&path, "/proc/%lld/cwd", (long long) sid);
n = readlink(path, target, MAXPATHLEN);
free(path);
}
if (n > 0) {
target[n] = '\0';
return (target);
}
return (NULL);
}
struct event_base *
osdep_event_init(void)
{
/* On Linux, epoll doesn't work on /dev/null (yes, really). */
setenv("EVENT_NOEPOLL", "1", 1);
return (event_init());
}