41 lines
1.0 KiB
C++
41 lines
1.0 KiB
C++
|
#include "fs/VFS.h"
|
||
|
|
#include "memory/MemoryManager.h"
|
||
|
|
#include "sys/Syscall.h"
|
||
|
|
#include "thread/Scheduler.h"
|
||
|
|
#include <bits/getdents.h>
|
||
|
|
|
||
|
|
Result<u64> sys_getdents(Registers*, SyscallArgs args)
|
||
|
|
{
|
||
|
|
int fd = (int)args[0];
|
||
|
|
luna_dirent* ent = (luna_dirent*)args[1];
|
||
|
|
usize count = (usize)args[2];
|
||
|
|
|
||
|
|
Thread* current = Scheduler::current();
|
||
|
|
|
||
|
|
auto& descriptor = *TRY(current->resolve_fd(fd));
|
||
|
|
|
||
|
|
if (descriptor.inode->type() != VFS::InodeType::Directory) return err(ENOTDIR);
|
||
|
|
|
||
|
|
usize nwrite = 0;
|
||
|
|
while (nwrite < count)
|
||
|
|
{
|
||
|
|
auto maybe_entry = descriptor.inode->get(descriptor.offset);
|
||
|
|
if (!maybe_entry.has_value()) break;
|
||
|
|
|
||
|
|
descriptor.offset++;
|
||
|
|
|
||
|
|
auto entry = maybe_entry.release_value();
|
||
|
|
|
||
|
|
luna_dirent kent;
|
||
|
|
kent.inode = entry.inode->inode_number();
|
||
|
|
strlcpy(kent.name, entry.name.chars(), entry.name.length() + 1);
|
||
|
|
|
||
|
|
if (!MemoryManager::copy_to_user_typed(ent, &kent)) return err(EFAULT);
|
||
|
|
|
||
|
|
ent++;
|
||
|
|
nwrite++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return nwrite;
|
||
|
|
}
|