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// IBM_PROLOG_BEGIN_TAG
// This is an automatically generated prolog.
//
// $Source: src/sys/vfs/vfs_init.C $
//
// IBM CONFIDENTIAL
//
// COPYRIGHT International Business Machines Corp. 2011
//
// p1
//
// Object Code Only (OCO) source materials
// Licensed Internal Code Source Materials
// IBM HostBoot Licensed Internal Code
//
// The source code for this program is not published or other-
// wise divested of its trade secrets, irrespective of what has
// been deposited with the U.S. Copyright Office.
//
// Origin: 30
//
// IBM_PROLOG_END
/**
* @file vfs_init.C
* @brief function definitions for funtions used to initialize modules
*/
#include <sys/vfs.h>
#include <kernel/console.H>
#include <limits.h>
#include <sys/mm.h>
#include <util/align.H>
VfsSystemModule VFS_MODULES[VFS_MODULE_MAX];
uint64_t VFS_LAST_ADDRESS;
int vfs_module_perms(VfsSystemModule* module)
{
int rc = 0;
uint64_t memsize = ALIGN_PAGE(module->byte_count);
uint64_t textsize= (uint64_t)module->data - (uint64_t)module->text;
uint64_t datasize = memsize - textsize;
printkd("%s text=%p:%lx data=%p:%lx\n",
module->module,
module->text,
textsize,
module->data,
datasize);
if(textsize != 0)
{
// Mark text pages(s) as executable
rc |= mm_set_permission(module->text,
textsize,
EXECUTABLE);
// Mark data pages(s) as normal
rc |= mm_set_permission(module->data,
datasize,
WRITABLE);
}
else // ro data module
{
// Mark data pages(s) as normal
rc |= mm_set_permission(module->data,
datasize,
READ_ONLY);
}
return rc;
}
// ----------------------------------------------------------------------------
void vfs_module_init()
{
printk("Initializing modules.\n");
VfsSystemModule* module = &VFS_MODULES[0];
while ('\0' != module->module[0])
{
int rc = vfs_module_perms(module);
if(rc) printk("Perms set failed on %s, rc = %d\n",
module->module,rc);
++module;
}
module = &VFS_MODULES[0];
while ('\0' != module->module[0])
{
printk("\tIniting module %s...", module->module);
if (NULL != module->init)
(module->init)(NULL);
printk("done.\n");
++module;
}
printk("Modules initialized.\n");
}
// ----------------------------------------------------------------------------
VfsSystemModule * vfs_find_module(VfsSystemModule * i_table,
const char * i_name)
{
VfsSystemModule* module = i_table;
VfsSystemModule* ret = NULL;
while ('\0' != module->module[0])
{
if (0 == strcmp(i_name,module->module))
{
ret = module;
break;
}
module++;
}
return ret;
}
// ----------------------------------------------------------------------------
VfsSystemModule * vfs_find_address(VfsSystemModule * i_table,
const void * i_vaddr)
{
VfsSystemModule * module = i_table;
VfsSystemModule * ret = NULL;
const uint8_t * vaddr = reinterpret_cast<const uint8_t *>(i_vaddr);
while('\0' != module->module[0])
{
const uint8_t * first = reinterpret_cast<const uint8_t *>(module->text);
const uint8_t * last = first + module->byte_count;
if(vaddr >= first && vaddr < last)
{
ret = module;
break;
}
++module;
}
return ret;
}
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