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Kernel: Allow getgroups with size 

This can be used to query the number of groups
This commit is contained in:
Bananymous 2025-08-17 23:58:48 +03:00
parent 0066b20413
commit 3e97a82af0
1 changed files with 3 additions and 1 deletions
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4
kernel/kernel/Process.cpp
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@ -3211,8 +3211,10 @@ namespace Kernel
BAN::ErrorOr<long> Process::sys_getgroups(gid_t groups[], size_t count) BAN::ErrorOr<long> Process::sys_getgroups(gid_t groups[], size_t count)
{ {
LockGuard _(m_process_lock); LockGuard _(m_process_lock);
const auto current = m_credentials.groups();
if (count == 0)
return current.size();
TRY(validate_pointer_access(groups, count * sizeof(gid_t), true)); TRY(validate_pointer_access(groups, count * sizeof(gid_t), true));
auto current = m_credentials.groups();
if (current.size() > count) if (current.size() > count)
return BAN::Error::from_errno(EINVAL); return BAN::Error::from_errno(EINVAL);
for (size_t i = 0; i < current.size(); i++) for (size_t i = 0; i < current.size(); i++)