mirror of
https://github.com/drasko/codezero.git
synced 2026-01-12 02:43:15 +01:00
cab2e8bdd3
Finished adding untested shm syscalls. Finished adding untested l4 send/recv helpers Everything compiles. Now going to fix lots of bugs ;-)
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*
|
|
* High-level block device handling.
|
|
*
|
|
* Copyright (C) 2007, 2008 Bahadir Balban
|
|
*/
|
|
#include <stdio.h>
|
|
#include <blkdev.h>
|
|
|
|
/*
|
|
* Handles block device requests from fs0 using a combination of
|
|
* server-specific and posix shm semantics
|
|
*/
|
|
void handle_block_device_request()
|
|
{
|
|
u32 mr[MR_UNUSED_TOTAL];
|
|
l4id_t sender;
|
|
int err;
|
|
u32 tag;
|
|
|
|
printf("%s: Listening requests.\n", __TASKNAME__);
|
|
|
|
if ((err = l4_receive(L4_ANYTHREAD)) < 0) {
|
|
printf("%s: %s: IPC Error: %d. Quitting...\n", __TASKNAME__,
|
|
__FUNCTION__, err);
|
|
BUG();
|
|
}
|
|
|
|
/* Read conventional ipc data */
|
|
tag = l4_get_tag();
|
|
sender = l4_get_sender();
|
|
|
|
/* Read mrs not used by syslib */
|
|
for (int i = 0; i < MR_UNUSED_TOTAL; i++)
|
|
mr[i] = read_mr(i);
|
|
|
|
switch(tag) {
|
|
case L4_IPC_TAG_WAIT:
|
|
printf("%s: Synced with waiting thread.\n", __TASKNAME__);
|
|
break;
|
|
case L4_IPC_TAG_BLOCK_OPEN:
|
|
sys_open(sender, (void *)mr[0], (int)mr[1], (u32)mr[2]);
|
|
break;
|
|
default:
|
|
printf("%s: Unrecognised ipc tag (%d)"
|
|
"received. Ignoring.\n", __TASKNAME__, mr[MR_TAG]);
|
|
}
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
/* Initialise the block devices */
|
|
init_blkdev();
|
|
|
|
while (1) {
|
|
handle_block_device_request();
|
|
}
|
|
return 0;
|
|
}
|
|
|