Annotation of embedaddon/tmux/osdep-linux.c, revision 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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