mirror of https://github.com/dzavalishin/oskit/
92 lines
2.0 KiB
C
Executable File
92 lines
2.0 KiB
C
Executable File
/*
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* Copyright (c) 1997-1998 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <malloc.h>
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#include <errno.h>
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#include <oskit/io/bufio.h>
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#include <oskit/fs/openfile.h>
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#include <oskit/svm.h>
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static inline int
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convert_prot(int prot)
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{
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int svm_prot = 0;
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if (prot & PROT_READ)
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svm_prot |= SVM_PROT_READ;
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if (prot & PROT_WRITE)
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svm_prot |= SVM_PROT_WRITE;
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return svm_prot;
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}
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void *
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mmap(void *addr, size_t len, int prot, int flags, int fd, off_t off)
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{
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oskit_error_t rc;
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if (len == 0)
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return 0;
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if (flags & MAP_ANON) {
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rc = svm_alloc((oskit_addr_t *)&addr, len, convert_prot(prot),
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(flags & MAP_FIXED) ? SVM_ALLOC_FIXED : 0);
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if (rc) {
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errno = rc;
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return MAP_FAILED;
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}
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return addr;
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}
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errno = ENOSYS;
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return MAP_FAILED;
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}
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int
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munmap(void *addr, size_t len)
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{
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oskit_error_t rc;
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if (len == 0)
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return 0;
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rc = svm_dealloc((oskit_addr_t) addr, len);
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if (rc) {
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errno = rc;
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return -1;
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}
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return 0;
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}
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int
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mprotect(const void *addr, size_t len, int prot)
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{
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oskit_error_t rc;
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if (len == 0)
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return 0;
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rc = svm_protect((oskit_addr_t) addr, len, convert_prot(prot));
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if (rc) {
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errno = rc;
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return -1;
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}
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return 0;
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}
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