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503054c0dd
* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.
* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.
* malloc/malloc-size.c (malloc_usable_size): Renamed from
malloc_object_allocation_size.
* malloc/malloc.h: Fix decl.
* sys/select.h: New file, wrapper header.
* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
fd_set, associated macros, and select decl.
* sysdeps/posix/isfdtype.c: New file.
Tue Jul 2 23:45:14 1996 Ulrich Drepper <drepper@cygnus.com>
The latest Japanese proposal for POSIX locales renames the
CHARMAP keyword in locale definition files to CHARCONV.
* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
function ctype_is_charmap to ctype_is_charconv.
* locale/programs/locfile-kw.gperf: Replace charmap keyword with
charconv.
* locale/programs/locfile-token.h: Add definition of token
charconv.
* locale/programs/locfile.c: Recognize charconv keyword. Rename
lables according to this.
* locale/weight.h (get_weight): Cast constants to prevent
warnings.
* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
string/strxfrm.c: Add some more casts to prevent signed<->unsigned
warnings.
New stuff described in P1003.1g.
* misc/Makefile (headers): Add sys/select.h.
(routines): Add pselect.
* misc/sys/select.h: New file. Declare select functions and
needed data types and macros.
* sysdeps/generic/pselect.c: New file. Add generic implementation
of pselect() function which uses select().
* posix/getconf.c: Recognize new variables from P1003.1g.
* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
* posix/unistd.h: Add description of the P1003.1g variables.
* sysdeps/generic/confname.h: Define _SC_* values for new
variables.
* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
_PC_SOCK_MAXBUF.
* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
* sysdeps/posix/sysconf.c (sysconf): Add handling of new
P1003.1g variables.
* sysdeps/stub/sysconf.c (sysconf): Ditto.
* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
_POSIX_SELECT since Linux has this.
* socket/Makefile (routines): Add isfdtype.
* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
* sysdeps/stub/isfdtype.c: New file. Stub implementation of
isfdtype.
* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* Copyright (C) 1991, 1995, 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 modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the GNU C Library; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <unistd.h>
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#include <errno.h>
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/* Defined in brk.c. */
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extern void *__curbrk;
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extern int __brk (void *addr);
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/* Extend the process's data space by INCREMENT.
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If INCREMENT is negative, shrink data space by - INCREMENT.
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Return start of new space allocated, or -1 for errors. */
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void *
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__sbrk (ptrdiff_t increment)
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{
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void *oldbrk;
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/* Always update __curbrk from the kernel's brk value. That way two
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separate instances of __brk and __sbrk can share the heap, returning
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interleaved pieces of it. This happens when libc.so is loaded by
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dlopen in a statically-linked program that already uses __brk. */
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if (__brk (0) < 0)
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return (void *) -1;
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if (increment == 0)
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return __curbrk;
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oldbrk = __curbrk;
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if (__brk (oldbrk + increment) < 0)
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return (void *) -1;
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return oldbrk;
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}
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weak_alias (__sbrk, sbrk)
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