mirror of https://github.com/dzavalishin/oskit/
105 lines
2.7 KiB
C
Executable File
105 lines
2.7 KiB
C
Executable File
/*
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* Copyright (c) 1997-1999 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 <oskit/startup.h>
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#include <oskit/dev/dev.h>
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#include <oskit/io/blkio.h>
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#include <oskit/io/absio.h>
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#include <oskit/svm.h>
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#ifdef PTHREADS
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#include <oskit/com/wrapper.h>
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#include <oskit/threads/pthread.h>
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#define start_svm start_svm_pthreads
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#define start_svm_on_blkio start_svm_on_blkio_pthreads
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#endif
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/*
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* Start the SVM system on a specific oskit_blkio instance. In the pthreads
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* case, the bio should NOT be wrapped; it will be taken care of here.
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*/
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oskit_error_t
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start_svm_on_blkio(oskit_blkio_t *bio)
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{
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#ifdef PTHREADS
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{
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oskit_error_t err;
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oskit_blkio_t *wrappedbio;
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/*
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* Wrap the partition blkio.
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*/
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err = oskit_wrap_blkio(bio,
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(void (*)(void *))osenv_process_lock,
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(void (*)(void *))osenv_process_unlock,
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0, &wrappedbio);
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if (err)
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panic("oskit_wrap_blkio() failed: errno 0x%x\n", err);
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/*
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* Don't need the partition anymore, the wrapper has a ref.
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*/
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oskit_blkio_release(bio);
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bio = wrappedbio;
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}
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#endif
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/*
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* Allow for the possibility that the SVM system was already
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* initialized without a pager bio, and that this might be a
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* subsequent call to add paging to the mix.
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*/
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svm_pager_init((oskit_absio_t *) bio);
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/*
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* Don't need the partition anymore, SVM has a ref.
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*/
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oskit_blkio_release(bio);
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return 0;
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}
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/*
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* Start the SVM system on a disk/partition specification.
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*
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* Device initialization should already have been done.
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*/
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oskit_error_t
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start_svm(const char *disk, const char *partition)
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{
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oskit_error_t err;
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oskit_blkio_t *bio;
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/*
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* If paging is not requested ...
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*/
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if (!disk) {
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svm_init((oskit_absio_t *) 0);
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return 0;
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}
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/* Otherwise open the disk partition. */
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osenv_process_lock();
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err = start_disk(disk, partition, 0, &bio);
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osenv_process_unlock();
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if (err)
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return err;
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return start_svm_on_blkio(bio);
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}
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