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