// Initialize the file system
void
fs_init(void)
{
static_assert(sizeof(struct File) == 256);
// Find a JOS disk. Use the second IDE disk (number 1) if available.
if (ide_probe_disk1())
ide_set_disk(1);
else
ide_set_disk(0);
read_super();
check_write_block();
read_bitmap();
}
// Initialize the file system
void
fs_init(void)
{
static_assert(sizeof(struct File) == 256);
// Find a JOS disk. Use the second IDE disk (number 1) if available.
if (ide_probe_disk1())
ide_set_disk(1);
else
ide_set_disk(0);
bc_init();
// Set "super" to point to the super block.
super = diskaddr(1);
check_super();
}
void
umain(int argc, char **argv)
{
int r;
static_assert(sizeof(struct BlockInfo) == 64);
static_assert(BLOCKINFOMAP + (DISKSIZE / BLKSIZE) * sizeof(struct BlockInfo) <= DISKMAP);
assert(thisenv->env_id == ENVID_BUFCACHE);
binaryname = "bufcache";
cprintf("bufcache is running\n");
// Check that we are able to do I/O
// If it looks like I/O will definitely fail, then yield first to
// other runnable, non-idle environments.
// (This helps previous grading scripts: environment IDs are as
// expected, but tests still complete quickly.)
while (!(thisenv->env_tf.tf_eflags & FL_IOPL_MASK)
&& another_runnable_environment_exists())
sys_yield();
outw(0x8A00, 0x8A00);
cprintf("bufcache can do I/O\n");
// Find a JOS disk. Use the second IDE disk (number 1) if available.
if (ide_probe_disk1())
ide_set_disk(1);
else
ide_set_disk(0);
// Set up the flush pipe
if ((r = pipe(p)) < 0)
panic("Error setting up pipe: %e\n", r);
// Process incoming requests
while (1) {
int32_t breq;
envid_t envid;
breq = ipc_recv(&envid, 0, 0);
handle_flush_queue();
handle_breq(envid, breq);
}
}
// Initialize the file system
void
fs_init(void)
{
static_assert(sizeof(struct File) == 256);
// Find a JOS disk. Use the second IDE disk (number 1) if available.
if (ide_probe_disk1())
ide_set_disk(1);
else
ide_set_disk(0);
bc_init();
LOG(DEBUG_FS, "bc_init done\n");
// Set "super" to point to the super block.
super = diskaddr(1);
// Set "bitmap" to the beginning of the first bitmap block.
bitmap = diskaddr(2);
check_super();
check_bitmap();
}
// Initialize the file system
void
fs_init(void)
{
static_assert(sizeof(struct File) == 256);
#ifndef VMM_GUEST
// Find a JOS disk. Use the second IDE disk (number 1) if available.
if (ide_probe_disk1())
ide_set_disk(1);
else
ide_set_disk(0);
#else
host_ipc_init();
#endif
bc_init();
// Set "super" to point to the super block.
super = diskaddr(1);
check_super();
// Set "bitmap" to the beginning of the first bitmap block.
bitmap = diskaddr(2);
check_bitmap();
}