* Makefile.in (DLL_OFILES): Add bsdlib.o.
* autoload.cc (RegisterServiceProcess): Add. * bsdlib.cc: New file. (daemon): New function. (login_tty): Ditto. (openpty): Ditto. (forkpty): Ditto. * cygwin.din: Export daemon, forkpty, login_tty, logwtmp, updwtmp, openpty and revoke. * syscalls.cc (updwtmp): New function, writing to wtmp exclusively. (logwtmp): Ditto. (login): Call updwtmp instead of writing to wtmp by itself. (logout): Ditto. * tty.cc (revoke): New funtion. * include/paths.h: Define _PATH_DEVNULL. * include/pty.h: New header. * include/cygwin/version.h: Bump API minor number. * include/sys/utmp.h: Declare logwtmp with const arguments. Declare updwtmp. * lib/iruserok.c: New file. (ruserok): New function. (iruserok): Ditto. (__ivaliduser): Ditto. (__icheckhost): Ditto.
This commit is contained in:
Corinna Vinschen
165
winsup/cygwin/libc/bsdlib.cc
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165
winsup/cygwin/libc/bsdlib.cc
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* CV 2003-09-10: Cygwin specific changes applied. Code simplified just
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* for Cygwin alone.
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*/
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#include "winsup.h"
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#include <stdlib.h>
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#include <utmp.h>
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#include <unistd.h>
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#include <sys/termios.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include "cygerrno.h"
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extern "C" int
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daemon (int nochdir, int noclose)
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{
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int fd;
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switch (fork ())
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{
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case -1:
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return -1;
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case 0:
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if (!wincap.is_winnt ())
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{
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/* Register as service under 9x/Me which allows to close
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the parent window with the daemon still running.
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This function only exists on 9x/Me and is autoloaded
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so it fails silently on NT. */
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DWORD WINAPI RegisterServiceProcess (DWORD, DWORD);
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RegisterServiceProcess (0, 1);
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}
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break;
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default:
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/* This sleep avoids a race condition which kills the
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child process if parent is started by a NT/W2K service.
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FIXME: Is that still true? */
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Sleep (1000L);
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_exit (0);
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}
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if (setsid () == -1)
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return -1;
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if (!nochdir)
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chdir ("/");
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if (!noclose && (fd = open (_PATH_DEVNULL, O_RDWR, 0)) >= 0)
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{
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dup2 (fd, STDIN_FILENO);
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dup2 (fd, STDOUT_FILENO);
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dup2 (fd, STDERR_FILENO);
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if (fd > 2)
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close (fd);
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}
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return 0;
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}
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extern "C" int
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login_tty (int fd)
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{
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char *fdname;
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int newfd;
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if (setsid () == -1)
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return -1;
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if ((fdname = ttyname (fd)))
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{
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if (fd != STDIN_FILENO)
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close (STDIN_FILENO);
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if (fd != STDOUT_FILENO)
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close (STDOUT_FILENO);
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if (fd != STDERR_FILENO)
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close (STDERR_FILENO);
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newfd = open (fdname, O_RDWR);
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close (newfd);
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}
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dup2 (fd, STDIN_FILENO);
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dup2 (fd, STDOUT_FILENO);
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dup2 (fd, STDERR_FILENO);
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if (fd > 2)
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close (fd);
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return 0;
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}
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extern "C" int
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openpty (int *amaster, int *aslave, char *name, struct termios *termp,
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struct winsize *winp)
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{
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int master, slave;
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char pts[MAX_PATH];
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if ((master = open ("/dev/ptmx", O_RDWR | O_NOCTTY)) >= 0)
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{
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grantpt (master);
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unlockpt (master);
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strcpy (pts, ptsname (master));
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revoke (pts);
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if ((slave = open (pts, O_RDWR | O_NOCTTY)) >= 0)
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{
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if (amaster)
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*amaster = master;
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if (aslave)
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*aslave = slave;
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if (name)
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strcpy (name, pts);
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if (termp)
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tcsetattr (slave, TCSAFLUSH, termp);
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if (winp)
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ioctl (slave, TIOCSWINSZ, (char *) winp);
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return 0;
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}
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close (master);
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}
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set_errno (ENOENT);
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return -1;
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}
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extern "C" int
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forkpty (int *amaster, char *name, struct termios *termp, struct winsize *winp)
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{
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int master, slave, pid;
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if (openpty (&master, &slave, name, termp, winp) == -1)
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return -1;
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switch (pid = fork ())
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{
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case -1:
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return -1;
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case 0:
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close (master);
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login_tty (slave);
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return 0;
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}
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if (amaster)
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*amaster = master;
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close (slave);
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return pid;
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}
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