61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix 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 GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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filesystem.cpp
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Allows access to stored sequences of bytes in an orderly fashion.
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******************************************************************************/
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#include "platform.h"
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#include "syscall.h"
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#include "process.h"
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#include "filesystem.h"
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#include "mount.h"
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namespace Sortix
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{
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namespace FileSystem
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{
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Device* Open(const char* path, int flags, mode_t mode)
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{
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size_t pathoffset = 0;
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DevFileSystem* fs = Mount::WhichFileSystem(path, &pathoffset);
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if ( !fs ) { return NULL; }
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return fs->Open(path + pathoffset, flags, mode);
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}
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int SysOpen(const char* path, int flags, mode_t mode)
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{
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Process* process = CurrentProcess();
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Device* dev = Open(path, flags, mode);
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if ( !dev ) { return -1; /* TODO: errno */ }
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int fd = process->descriptors.Allocate(dev);
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if ( fd < 0 ) { dev->Unref(); }
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return fd;
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}
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void Init()
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{
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Syscall::Register(SYSCALL_OPEN, (void*) SysOpen);
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}
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}
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}
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