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Kernel: Annotate all syscalls with VERIFY_PROCESS_BIG_LOCK_ACQUIRED

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Before we start disabling acquisition of the big process lock for
specific syscalls, make sure to document and assert that all the
lock is held during all syscalls.
This commit is contained in:
Brian Gianforcaro 2021-07-18 11:20:12 -07:00 • committed by Gunnar Beutner
parent 120b9bc05b
commit 9201a06027
72 changed files with 165 additions and 0 deletions
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5
Kernel/Syscalls/process.cpp
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@ -11,18 +11,21 @@ namespace Kernel {
KResultOr<FlatPtr> Process::sys$getpid()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(stdio);
return pid().value();
}
KResultOr<FlatPtr> Process::sys$getppid()
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(stdio);
return m_ppid.value();
}
KResultOr<FlatPtr> Process::sys$get_process_name(Userspace<char*> buffer, size_t buffer_size)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(stdio);
if (m_name.length() + 1 > buffer_size)
return ENAMETOOLONG;
@ -34,6 +37,7 @@ KResultOr<FlatPtr> Process::sys$get_process_name(Userspace<char*> buffer, size_t
KResultOr<FlatPtr> Process::sys$set_process_name(Userspace<const char*> user_name, size_t user_name_length)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(proc);
if (user_name_length > 256)
return ENAMETOOLONG;
@ -49,6 +53,7 @@ KResultOr<FlatPtr> Process::sys$set_process_name(Userspace<const char*> user_nam
KResultOr<FlatPtr> Process::sys$set_coredump_metadata(Userspace<const Syscall::SC_set_coredump_metadata_params*> user_params)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
Syscall::SC_set_coredump_metadata_params params;
if (!copy_from_user(&params, user_params))
return EFAULT;