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/* Copyright (C) 2007-2008 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
*/
#include "android/hw-kmsg.h"
#include "qemu-char.h"
#include "charpipe.h"
#include "android/utils/debug.h"
static CharDriverState* android_kmsg_cs;
typedef struct {
CharDriverState* cs;
AndroidKmsgFlags flags;
} KernelLog;
static int
kernel_log_can_read( void* opaque )
{
return 1024;
}
static void
kernel_log_read( void* opaque, const uint8_t* from, int len )
{
KernelLog* k = opaque;
if (k->flags & ANDROID_KMSG_PRINT_MESSAGES)
printf( "%.*s", len, (const char*)from );
/* XXXX: TODO: save messages into in-memory buffer for later retrieval */
}
static void
kernel_log_init( KernelLog* k, AndroidKmsgFlags flags )
{
if ( qemu_chr_open_charpipe( &k->cs, &android_kmsg_cs ) < 0 ) {
derror( "could not create kernel log charpipe" );
exit(1);
}
qemu_chr_add_handlers( k->cs, kernel_log_can_read, kernel_log_read, NULL, k );
k->flags = flags;
}
static KernelLog _kernel_log[1];
void
android_kmsg_init( AndroidKmsgFlags flags )
{
if (_kernel_log->cs == NULL)
kernel_log_init( _kernel_log, flags );
}
CharDriverState* android_kmsg_get_cs( void )
{
if (android_kmsg_cs == NULL) {
android_kmsg_init(0);
}
return android_kmsg_cs;
}
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