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#include <string.h>
#include <sys/msg.h>
#include <sys/vfs.h>
#include <sys/task.h>
#include <util/locked/list.H>
#include <kernel/console.H> // TODO : Remove this.
const char* VFS_ROOT = "/";
const char* VFS_ROOT_BIN = "/bin/";
const char* VFS_ROOT_DATA = "/data/";
const char* VFS_ROOT_MSG = "/msg/";
void vfs_module_init();
struct VfsPath
{
char key[64];
bool operator!=(VfsPath& r) { return 0 != strcmp(key, r.key); };
};
struct VfsEntry
{
typedef VfsPath key_type;
key_type key;
msg_q_t msg_q;
VfsEntry* next;
VfsEntry* prev;
};
void vfs_main(void* unused)
{
// Create message queue, register with kernel.
msg_q_t vfsMsgQ = msg_q_create();
msg_q_register(vfsMsgQ, VFS_ROOT);
printk("done.\n");
// TODO... barrier with init.
// Initalize modules.
vfs_module_init();
Util::Locked::List<VfsEntry, VfsEntry::key_type> vfsContents;
while(1)
{
msg_t* msg = msg_wait(vfsMsgQ);
switch(msg->type)
{
case VFS_MSG_REGISTER_MSGQ:
{
VfsEntry* e = new VfsEntry();
strcpy(e->key.key, (char*) msg->extra_data);
e->msg_q = (msg_q_t) msg->data[0];
vfsContents.insert(e);
printk("VFS: Registering %p as %s\n",
e->msg_q, e->key.key);
msg_respond(vfsMsgQ, msg);
}
break;
case VFS_MSG_RESOLVE_MSGQ:
{
VfsEntry::key_type k;
strcpy(k.key, (char*) msg->extra_data);
VfsEntry* e = vfsContents.find(k);
if (NULL == e)
msg->data[0] = (uint64_t) NULL;
else
msg->data[0] = (uint64_t) e->msg_q;
msg_respond(vfsMsgQ, msg);
}
break;
case VFS_MSG_EXEC:
{
printk("VFS: Got exec request of %s\n",
(const char*)msg->data[0]);
VfsSystemModule* module = &VFS_MODULES[0];
tid_t child = -1;
while ('\0' != module->module[0])
{
if (0 == strcmp((const char*) msg->data[0],
module->module))
{
if ( module->start == NULL)
{
// module has no _start() routine,
// return child = -1
break;
}
child = task_create(module->start,
(void*) msg->data[1]);
break;
}
module++;
}
msg->data[0] = child;
msg_respond(vfsMsgQ, msg);
}
break;
default:
msg_free(msg);
break;
}
} // end while(1)
}
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