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sortix--sortix/kernel/ioctx.cpp

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/*
* Copyright (c) 2012, 2013, 2014 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* ioctx.cpp
* The context for io operations: who made it, how should data be copied, etc.
*/
#include <sortix/kernel/copy.h>
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#include <sortix/kernel/ioctx.h>
#include <sortix/kernel/kernel.h>
#include <sortix/kernel/process.h>
namespace Sortix {
void SetupUserIOCtx(ioctx_t* ctx)
{
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Process* process = CurrentProcess();
ScopedLock lock(&process->idlock);
ctx->uid = ctx->auth_uid = process->uid;
ctx->gid = ctx->auth_gid = process->gid;
ctx->copy_to_dest = CopyToUser;
ctx->copy_from_src = CopyFromUser;
ctx->zero_dest = ZeroUser;
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ctx->dflags = 0;
}
void SetupKernelIOCtx(ioctx_t* ctx)
{
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Process* process = CurrentProcess();
ScopedLock lock(&process->idlock);
ctx->uid = ctx->auth_uid = process->uid;
ctx->gid = ctx->auth_gid = process->gid;
ctx->copy_to_dest = CopyToKernel;
ctx->copy_from_src = CopyFromKernel;
ctx->zero_dest = ZeroKernel;
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ctx->dflags = 0;
}
} // namespace Sortix