91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
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/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, version 3 of the License.
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*
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* Jehanne 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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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <posix.h>
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#include "internal.h"
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void *
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POSIX_sbrk(int *errnop, ptrdiff_t incr)
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{
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void *p;
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p = segbrk(incr);
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if(p != (void*)-1)
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return p;
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*errnop = __libposix_translate_errstr((uintptr_t)POSIX_sbrk);
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return (void*)-1;
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}
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void *
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POSIX_malloc(int *errnop, size_t size)
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{
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void *p;
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p = malloc(size);
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if(p != nil)
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return p;
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*errnop = __libposix_get_errno(PosixENOMEM);
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return nil;
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}
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void *
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POSIX_realloc(int *errnop, void *ptr, size_t size)
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{
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void *p;
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p = realloc(ptr, size);
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if(p != nil)
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return p;
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if(size == 0){
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if(ptr != nil){
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// POSIX 1-2008 requires an "implementation defined" errno
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*errnop = __libposix_get_errno(PosixEINVAL);
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}
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} else {
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*errnop = __libposix_get_errno(PosixENOMEM);
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}
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return nil;
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}
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void *
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POSIX_calloc(int *errnop, size_t nelem, size_t size)
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{
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void *p;
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size = size * nelem;
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if(size <= 0){
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// POSIX 1-2008 requires an "implementation defined" errno
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*errnop = __libposix_get_errno(PosixEINVAL);
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return nil;
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}
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p = malloc(size);
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if(p != nil){
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memset(p, 0, size);
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return p;
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}
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*errnop = __libposix_get_errno(PosixENOMEM);
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return nil;
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}
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void
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POSIX_free(void *ptr)
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{
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jehanne_free(ptr);
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}
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