glibc/sysdeps/mach/hurd/dup2.c
Ulrich Drepper ebbad4cc83 Update.
1997-05-26 22:51  Ulrich Drepper  <drepper@cygnus.com>

	* configure.in: Use AC_PROG_CC_LOCAL instead of AC_PROC_CC.
	* aclocal.m4: Add AC_PROG_CC_LOCAL which does not fail for
	environments in which linking is not possible at configure time
	(since te libc is just build).
	Based on patches by Marcus G. Daniels <marcus@cathcart.sysc.pdx.edu>.

	* time/scheck.c (scheck): Make 2nd parameter const.
	* time/private.h: Likewise.

1997-05-26 18:58  Ulrich Drepper  <drepper@cygnus.com>

	* stdlib/random_r.c (__initstate_r): Initialize randomizer type in
	state array only at right place.
	Reported by Sven Verdoolaege <skimo@breughel.ufsia.ac.be>.

	* stdlib/erand48_r.c (__erand48_r): Don't generate numbers in
	[0.5,1.0) but really in [0.0, 1.0).
	Patch by Oliver Gathmann <gathmann@scar.utoronto.ca>.

1997-05-22 12:50  Eric Delaunay  <delaunay@lix.polytechnique.fr>

	* shlib-versions: Provide Linux/SPARC defaults.

1997-05-26 15:00  Matthias Urlichs  <urlichs@noris.de>

	* stdlib/strtod_l.c: Add missing #include <xlocale.h>.
	* stdlib/strtof_l.c: Likewise.
	* stdlib/strtol_l.c: Likewise.
	* stdlib/strtold_l.c: Likewise.
	* stdlib/strtoll_l.c: Likewise.
	* stdlib/strtoul_l.c: Likewise.
	* stdlib/strtoull_l.c: Likewise.

1997-05-26 02:42  Zack Weinberg  <zack@rabi.phys.columbia.edu>

	* hurd/dtable.c: De-ansidecl-fy.
	* math/test-math.c: Likewise.
	* signal/tst-signal.c: Likewise.
	* stdio/getc.c: Likewise.
	* stdio/obstream.c: Likewise.
	* stdio/putc.c: Likewise.
	* stdio-common/bug1.c: Likewise.
	* stdio-common/bug2.c: Likewise.
	* stdio-common/bug6.c: Likewise.
	* stdio-common/fscanf.c: Likewise.
	* stdlib/testsort.c: Likewise.
	* string/tester.c: Likewise.
	* sysdeps/am29k/ffs.c: Likewise.
	* sysdeps/generic/bb_init_func.c: Likewise.
	* sysdeps/generic/bcopy.c: Likewise.
	* sysdeps/generic/bzero.c: Likewise.
	* sysdeps/generic/div.c: Likewise.
	* sysdeps/generic/ffs.c: Likewise.
	* sysdeps/generic/memccpy.c: Likewise.
	* sysdeps/generic/memcpy.c: Likewise.
	* sysdeps/generic/memmove.c: Likewise.
	* sysdeps/generic/memset.c: Likewise.
	* sysdeps/generic/vfork.c: Likewise.
	* sysdeps/generic/vtimes.c: Likewise.
	* sysdeps/i386/bzero.c: Likewise.
	* sysdeps/i386/ffs.c: Likewise.
	* sysdeps/i960/ffs.c: Likewise.
	* sysdeps/m68k/ffs.c: Likewise.
	* sysdeps/m88k/ffs.c: Likewise.
	* sysdeps/mach/hurd/_exit.c: Likewise.
	* sysdeps/mach/hurd/accept.c: Likewise.
	* sysdeps/mach/hurd/access.c: Likewise.
	* sysdeps/mach/hurd/adjtime.c: Likewise.
	* sysdeps/mach/hurd/bind.c: Likewise.
	* sysdeps/mach/hurd/brk.c: Likewise.
	* sysdeps/mach/hurd/chdir.c: Likewise.
	* sysdeps/mach/hurd/chflags.c: Likewise.
	* sysdeps/mach/hurd/chmod.c: Likewise.
	* sysdeps/mach/hurd/chown.c: Likewise.
	* sysdeps/mach/hurd/chroot.c: Likewise.
	* sysdeps/mach/hurd/close.c: Likewise.
	* sysdeps/mach/hurd/connect.c: Likewise.
	* sysdeps/mach/hurd/defs.c: Likewise.
	* sysdeps/mach/hurd/dup2.c: Likewise.
	* sysdeps/mach/hurd/execve.c: Likewise.
	* sysdeps/mach/hurd/fchdir.c: Likewise.
	* sysdeps/mach/hurd/fchflags.c: Likewise.
	* sysdeps/mach/hurd/fchmod.c: Likewise.
	* sysdeps/mach/hurd/fchown.c: Likewise.
	* sysdeps/mach/hurd/fcntl.c: Likewise.
	* sysdeps/mach/hurd/fdopen.c: Likewise.
	* sysdeps/mach/hurd/flock.c: Likewise.
	* sysdeps/mach/hurd/fsync.c: Likewise.
	* sysdeps/mach/hurd/ftruncate.c: Likewise.
	* sysdeps/mach/hurd/getdtsz.c: Likewise.
	* sysdeps/mach/hurd/getegid.c: Likewise.
	* sysdeps/mach/hurd/geteuid.c: Likewise.
	* sysdeps/mach/hurd/getgid.c: Likewise.
	* sysdeps/mach/hurd/getgroups.c: Likewise.
	* sysdeps/mach/hurd/gethostid.c: Likewise.
	* sysdeps/mach/hurd/gethostname.c: Likewise.
	* sysdeps/mach/hurd/getitimer.c: Likewise.
	* sysdeps/mach/hurd/getlogin.c: Likewise.
	* sysdeps/mach/hurd/getpeername.c: Likewise.
	* sysdeps/mach/hurd/getpgid.c: Likewise.
	* sysdeps/mach/hurd/getpid.c: Likewise.
	* sysdeps/mach/hurd/getppid.c: Likewise.
	* sysdeps/mach/hurd/getsockname.c: Likewise.
	* sysdeps/mach/hurd/getsockopt.c: Likewise.
	* sysdeps/mach/hurd/getuid.c: Likewise.
	* sysdeps/mach/hurd/ioctl.c: Likewise.
	* sysdeps/mach/hurd/isatty.c: Likewise.
	* sysdeps/mach/hurd/link.c: Likewise.
	* sysdeps/mach/hurd/listen.c: Likewise.
	* sysdeps/mach/hurd/lseek.c: Likewise.
	* sysdeps/mach/hurd/mkdir.c: Likewise.
	* sysdeps/mach/hurd/open.c: Likewise.
	* sysdeps/mach/hurd/pipe.c: Likewise.
	* sysdeps/mach/hurd/read.c: Likewise.
	* sysdeps/mach/hurd/readlink.c: Likewise.
	* sysdeps/mach/hurd/reboot.c: Likewise.
	* sysdeps/mach/hurd/recv.c: Likewise.
	* sysdeps/mach/hurd/recvfrom.c: Likewise.
	* sysdeps/mach/hurd/rename.c: Likewise.
	* sysdeps/mach/hurd/rewinddir.c: Likewise.
	* sysdeps/mach/hurd/rmdir.c: Likewise.
	* sysdeps/mach/hurd/sbrk.c: Likewise.
	* sysdeps/mach/hurd/seekdir.c: Likewise.
	* sysdeps/mach/hurd/select.c: Likewise.
	* sysdeps/mach/hurd/setegid.c: Likewise.
	* sysdeps/mach/hurd/seteuid.c: Likewise.
	* sysdeps/mach/hurd/setgid.c: Likewise.
	* sysdeps/mach/hurd/setgroups.c: Likewise.
	* sysdeps/mach/hurd/sethostid.c: Likewise.
	* sysdeps/mach/hurd/sethostname.c: Likewise.
	* sysdeps/mach/hurd/setlogin.c: Likewise.
	* sysdeps/mach/hurd/setpgid.c: Likewise.
	* sysdeps/mach/hurd/setregid.c: Likewise.
	* sysdeps/mach/hurd/setreuid.c: Likewise.
	* sysdeps/mach/hurd/setrlimit.c: Likewise.
	* sysdeps/mach/hurd/setsid.c: Likewise.
	* sysdeps/mach/hurd/setsockopt.c: Likewise.
	* sysdeps/mach/hurd/settimeofday.c: Likewise.
	* sysdeps/mach/hurd/setuid.c: Likewise.
	* sysdeps/mach/hurd/shutdown.c: Likewise.
	* sysdeps/mach/hurd/sigaction.c: Likewise.
	* sysdeps/mach/hurd/sigaltstack.c: Likewise.
	* sysdeps/mach/hurd/sigpending.c: Likewise.
	* sysdeps/mach/hurd/sigprocmask.c: Likewise.
	* sysdeps/mach/hurd/sigstack.c: Likewise.
	* sysdeps/mach/hurd/sigsuspend.c: Likewise.
	* sysdeps/mach/hurd/socket.c: Likewise.
	* sysdeps/mach/hurd/socketpair.c: Likewise.
	* sysdeps/mach/hurd/stdio_init.c: Likewise.
	* sysdeps/mach/hurd/symlink.c: Likewise.
	* sysdeps/mach/hurd/sync.c: Likewise.
	* sysdeps/mach/hurd/sysd-stdio.c: Likewise.
	* sysdeps/mach/hurd/telldir.c: Likewise.
	* sysdeps/mach/hurd/truncate.c: Likewise.
	* sysdeps/mach/hurd/umask.c: Likewise.
	* sysdeps/mach/hurd/unlink.c: Likewise.
	* sysdeps/mach/hurd/wait4.c: Likewise.
	* sysdeps/mach/hurd/utimes.c: Likewise.
	* sysdeps/mach/hurd/write.c: Likewise.
	* sysdeps/mach/adjtime.c: Likewise.
	* sysdeps/mach/gettimeofday.c: Likewise.
	* sysdeps/mach/usleep.c: Likewise.
	* sysdeps/mips/__longjmp.c: Likewise.
	* sysdeps/posix/clock.c: Likewise.
	* sysdeps/posix/ctermid.c: Likewise.
	* sysdeps/posix/defs.c: Likewise.
	* sysdeps/posix/dup.c: Likewise.
	* sysdeps/posix/libc_fatal.c: Likewise.
	* sysdeps/posix/stdio_init.c: Likewise.
	* sysdeps/rs6000/ffs.c: Likewise.
	* sysdeps/sparc/e_sqrt.c: Likewise.
	* sysdeps/standalone/i386/force_cpu386/_exit.c: Likewise.
	* sysdeps/standalone/i386/force_cpu386/brdinit.c: Likewise.
	* sysdeps/standalone/i386/force_cpu386/console.c: Likewise.
	* sysdeps/standalone/i960/nindy960/_exit.c: Likewise.
	* sysdeps/standalone/i960/nindy960/brdinit.c: Likewise.
	* sysdeps/standalone/i960/nindy960/console.c: Likewise.
	* sysdeps/standalone/m68k/m68020/mvme136/_exit.c: Likewise.
	* sysdeps/standalone/m68k/m68020/mvme136/brdinit.c: Likewise.
	* sysdeps/standalone/brk.c: Likewise.
	* sysdeps/stub/_exit.c: Likewise.
	* sysdeps/stub/brdinit.c: Likewise.
	* sysdeps/stub/console.c: Likewise.
	* sysdeps/stub/defs.c: Likewise.
	* sysdeps/stub/errlist.c: Likewise.
	* sysdeps/stub/libc_fatal.c: Likewise.
	* sysdeps/stub/siglist.c: Likewise.
	* sysdeps/stub/stdio_init.c: Likewise.
	* sysdeps/stub/strtsupp.c: Likewise.
	* sysdeps/unix/bsd/bsd4.4/tcgetattr.c: Likewise.
	* sysdeps/unix/bsd/bsd4.4/tcsetattr.c: Likewise.
	* sysdeps/unix/bsd/bsd4.4/wait3.c: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/tcflow.c: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/tcflush.c: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/tcgetattr.c: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/tcsendbrk.c: Likewise.
	* sysdeps/unix/bsd/sun/sunos4/wait4.c: Likewise.
	* sysdeps/unix/bsd/ultrix4/mips/sigvec.c: Likewise.
	* sysdeps/unix/bsd/bsdstat.h: Likewise.
	* sysdeps/unix/bsd/clock.c: Likewise.
	* sysdeps/unix/bsd/gtty.c: Likewise.
	* sysdeps/unix/bsd/init-posix.c: Likewise.
	* sysdeps/unix/bsd/setgid.c: Likewise.
	* sysdeps/unix/bsd/setrgid.c: Likewise.
	* sysdeps/unix/bsd/setruid.c: Likewise.
	* sysdeps/unix/bsd/setuid.c: Likewise.
	* sysdeps/unix/bsd/stty.c: Likewise.
	* sysdeps/unix/bsd/telldir.c: Likewise.
	* sysdeps/unix/bsd/ualarm.c: Likewise.
	* sysdeps/unix/common/glue-ctype.c: Likewise.
	* sysdeps/unix/sparc/start.c: Likewise.
	* sysdeps/unix/sysv/irix4/fpathconf.c: Likewise.
	* sysdeps/unix/sysv/irix4/getgroups.c: Likewise.
	* sysdeps/unix/sysv/irix4/getrusage.c: Likewise.
	* sysdeps/unix/sysv/irix4/pathconf.c: Likewise.
	* sysdeps/unix/sysv/irix4/setgroups.c: Likewise.
	* sysdeps/unix/sysv/irix4/sigtramp.c: Likewise.
	* sysdeps/unix/sysv/irix4/start.c: Likewise.
	* sysdeps/unix/sysv/irix4/sysconf.c: Likewise.
	* sysdeps/unix/sysv/sco3.2.4/__setpgid.c: Likewise.
	* sysdeps/unix/sysv/sco3.2.4/getgroups.c: Likewise.
	* sysdeps/unix/sysv/sysv4/__getpgid.c: Likewise.
	* sysdeps/unix/sysv/sysv4/__setpgid.c: Likewise.
	* sysdeps/unix/sysv/sysv4/ftruncate.c: Likewise.
	* sysdeps/unix/sysv/sysv4/gethostname.c: Likewise.
	* sysdeps/unix/sysv/sysv4/getpgid.c: Likewise.
	* sysdeps/unix/sysv/sysv4/sethostname.c: Likewise.
	* sysdeps/unix/sysv/sysv4/setpgid.c: Likewise.
	* sysdeps/unix/sysv/sysv4/setsid.c: Likewise.
	* sysdeps/unix/sysv/gethostname.c: Likewise.
	* sysdeps/unix/sysv/tcgetpgrp.c: Likewise.
	* sysdeps/unix/sysv/tcsetpgrp.c: Likewise.
	* sysdeps/unix/alarm.c: Likewise.
	* sysdeps/unix/make_errlist.c: Likewise.
	* sysdeps/unix/rewinddir.c: Likewise.
	* sysdeps/unix/seekdir.c: Likewise.
	* sysdeps/unix/time.c: Likewise.
	* sysdeps/unix/utime.c: Likewise.
	* sysdeps/vax/__longjmp.c: Likewise.
	* sysdeps/vax/memccpy.c: Likewise.
	* time/strftime.c: Likewise.

1997-05-25 21:57  Miles Bader  <miles@gnu.ai.mit.edu>

	* argp-parse.c (parser_init): For the special case where no
	parsing function is supplied for an argp, propagate its input to
	its first child, if any.

	* argp.h (struct argp_state): `argp' field renamed to `root_argp'.
	* argp-help.c (__argp_state_help, argp_args_usage, hol_help):
	Replace references to STATE->argp with STATE->root_argp.
	* argp-parse.c (parser_init): Likewise.

1997-05-26 14:17  Ulrich Drepper  <drepper@cygnus.com>

	* manual/main.texi: Clarify situation for other not supported ports.
	Proposed by Andreas Jaeger <aj@arthur.rhein-neckar.de>.
	We recommend binutils 2.8.

1997-05-26 12:17  Ulrich Drepper  <drepper@cygnus.com>

	* netinet/in.h: New file.  Wrapper around inet/netinet/in.h.

1997-05-25 09:51  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* sysdeps/i386/elf/start.S: Change local label "nofini"
	to ".Lnofini".

	* sysdeps/i386/i386-mcount.S: Use GOT, instead of GOTOFF.

1997-05-24 17:45  H.J. Lu  <hjl@gnu.ai.mit.edu>

	* gmon/gmon.c (_mcleanup): Free tostruct array allocated in monstartup.

	(dl_main): Define _dl_verbose based on DL_WARN environment variable.
1997-05-26 23:01:17 +00:00

136 lines
3.8 KiB
C

/* Copyright (C) 1991, 92, 93, 94, 95, 97 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/fd.h>
/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
open on the same file as FD is. Return FD2 or -1. */
int
__dup2 (fd, fd2)
int fd;
int fd2;
{
struct hurd_fd *d;
/* Extract the ports and flags from FD. */
d = _hurd_fd_get (fd);
if (d == NULL)
{
errno = EBADF;
return -1;
}
HURD_CRITICAL_BEGIN;
__spin_lock (&d->port.lock);
if (d->port.port == MACH_PORT_NULL)
{
__spin_unlock (&d->port.lock);
errno = EBADF;
fd2 = -1;
}
else if (fd2 == fd)
/* FD is valid and FD2 is already the same; just return it. */
__spin_unlock (&d->port.lock);
else
{
struct hurd_userlink ulink, ctty_ulink;
int flags = d->flags;
io_t ctty = _hurd_port_get (&d->ctty, &ctty_ulink);
io_t port = _hurd_port_locked_get (&d->port, &ulink); /* Unlocks D. */
if (fd2 < 0)
{
errno = EBADF;
fd2 = -1;
}
else
{
/* Get a hold of the destination descriptor. */
struct hurd_fd *d2;
if (fd2 >= _hurd_dtablesize)
{
/* The table is not large enough to hold the destination
descriptor. Enlarge it as necessary to allocate this
descriptor. */
__mutex_unlock (&_hurd_dtable_lock);
/* We still hold FD1's lock, but this is safe because
_hurd_alloc_fd will only examine the cells starting
at FD2. */
d2 = _hurd_alloc_fd (NULL, fd2);
if (d2)
__spin_unlock (&d2->port.lock);
__mutex_lock (&_hurd_dtable_lock);
}
else
{
d2 = _hurd_dtable[fd2];
if (d2 == NULL)
{
/* Must allocate a new one. We don't initialize the port
cells with this call so that if it fails (out of
memory), we will not have already added user
references for the ports, which we would then have to
deallocate. */
d2 = _hurd_dtable[fd2] = _hurd_new_fd (MACH_PORT_NULL,
MACH_PORT_NULL);
}
}
if (d2 == NULL)
{
fd2 = -1;
if (errno == EINVAL)
errno = EBADF; /* POSIX.1-1990 6.2.1.2 ll 54-55. */
}
else
{
/* Give the ports each a user ref for the new descriptor. */
__mach_port_mod_refs (__mach_task_self (), port,
MACH_PORT_RIGHT_SEND, 1);
if (ctty != MACH_PORT_NULL)
__mach_port_mod_refs (__mach_task_self (), ctty,
MACH_PORT_RIGHT_SEND, 1);
/* Install the ports and flags in the new descriptor slot. */
__spin_lock (&d2->port.lock);
d2->flags = flags & ~FD_CLOEXEC; /* Dup clears FD_CLOEXEC. */
_hurd_port_set (&d2->ctty, ctty);
_hurd_port_locked_set (&d2->port, port); /* Unlocks D2. */
}
}
__mutex_unlock (&_hurd_dtable_lock);
_hurd_port_free (&d->port, &ulink, port);
if (ctty != MACH_PORT_NULL)
_hurd_port_free (&d->ctty, &ctty_ulink, port);
}
HURD_CRITICAL_END;
return fd2;
}
weak_alias (__dup2, dup2)