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Mon Aug 12 03:31:58 1996 Ulrich Drepper <drepper@cygnus.com> * nss/nsswitch.c (__nss_configure_lookup): New function. Allows to specify services. * nss/XXX-lookup.h: Rename database variable and make global. * nss/databases.def: New file. Real names of all databases. * nss/nss.h: New file. Contains declaration useful for users and service developers. * nss/nsswitch.h: Move some declarations to nss/nss.h. * nss.h: New file. Wrapper around nss/nss.h. * nss/Makefile (headers): Add nss.h. (distributes): Add databases.h. Sun Aug 11 16:19:42 1996 Ulrich Drepper <drepper@cygnus.com> Help the poor people with fast machines by making sure only one `ar' commands works on the library. * autolock.sh: New file. Written by Tom Tromey. * Makerules (do-ar): Call autolock.sh shell script instead of directly using `ar'. * config.make.in: Make configuration variable AUTOLOCK which gets initialized by configure. * configure.in: Define variable AUTOLOCK to point to autolock.sh script and mark it to substitute. * string/Makefile: Add -fno-builtin for tst-strlen.c, too. * elf/dl-lookup.c (_dl_lookup_symbol): Allow self-referencing. Patch by David Mosberger-Tang. Sun Aug 11 01:12:38 1996 Richard Henderson <rth@tamu.edu> * sysdeps/alpha/dl-machine.h (elf_alpha_fix_plt): Optimize LD_BIND_NOW startup by moving Icache flush from here ... (ELF_MACHINE_RUNTIME_TRAMPOLINE): ... to here. (ELF_MACHINE_USER_ADDRESS_MASK): Delete; it is unused. * sysdeps/alpha/divrem.h: Update comment to reflect the actual calling conventions. The code is already correct. Sun Aug 11 01:06:42 1996 Richard Henderson <rth@tamu.edu> * string/Makefile: Compile tester with -fno-builtin as we want to test our implementations, not gcc's.
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/* Copyright (C) 1991, 1992, 1993, 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <limits.h>
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#include <stddef.h>
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#include <dirent.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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char *__ttyname = NULL;
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/* Return the pathname of the terminal FD is open on, or NULL on errors.
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The returned storage is good only until the next call to this function. */
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char *
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DEFUN(ttyname, (fd), int fd)
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{
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static CONST char dev[] = "/dev";
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static char *name;
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static size_t namelen = 0;
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struct stat st;
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dev_t mydev;
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ino_t myino;
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DIR *dirstream;
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struct dirent *d;
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int save = errno;
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if (!__isatty (fd))
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return NULL;
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if (fstat (fd, &st) < 0)
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return NULL;
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mydev = st.st_dev;
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myino = st.st_ino;
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dirstream = opendir (dev);
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if (dirstream == NULL)
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return NULL;
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while ((d = readdir (dirstream)) != NULL)
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if (d->d_fileno == myino)
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{
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size_t dlen = _D_ALLOC_NAMLEN (d);
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if (sizeof (dev) + dlen > namelen)
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{
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free (name);
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namelen = 2 * (sizeof (dev) + dlen); /* Big enough. */
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name = malloc (namelen);
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if (! name)
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return NULL;
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(void) memcpy (name, dev, sizeof (dev) - 1);
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name[sizeof (dev) - 1] = '/';
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}
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(void) memcpy (&name[sizeof (dev)], d->d_name, dlen);
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if (stat (name, &st) == 0 && st.st_dev == mydev)
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{
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(void) closedir (dirstream);
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__ttyname = name;
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errno = save;
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return name;
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}
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}
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(void) closedir (dirstream);
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errno = save;
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return NULL;
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}
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