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