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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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8
Kernel/Syscalls/setuid.cpp
View file

@ -10,6 +10,7 @@ namespace Kernel {
KResultOr<FlatPtr> Process::sys$seteuid(uid_t new_euid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_euid != uid() && new_euid != suid() && !is_superuser())
@ -26,6 +27,7 @@ KResultOr<FlatPtr> Process::sys$seteuid(uid_t new_euid)
KResultOr<FlatPtr> Process::sys$setegid(gid_t new_egid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_egid != gid() && new_egid != sgid() && !is_superuser())
@ -41,6 +43,7 @@ KResultOr<FlatPtr> Process::sys$setegid(gid_t new_egid)
KResultOr<FlatPtr> Process::sys$setuid(uid_t new_uid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_uid != uid() && new_uid != euid() && !is_superuser())
@ -58,6 +61,7 @@ KResultOr<FlatPtr> Process::sys$setuid(uid_t new_uid)
KResultOr<FlatPtr> Process::sys$setgid(gid_t new_gid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_gid != gid() && new_gid != egid() && !is_superuser())
@ -75,6 +79,7 @@ KResultOr<FlatPtr> Process::sys$setgid(gid_t new_gid)
KResultOr<FlatPtr> Process::sys$setreuid(uid_t new_ruid, uid_t new_euid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_ruid == (uid_t)-1)
@ -100,6 +105,7 @@ KResultOr<FlatPtr> Process::sys$setreuid(uid_t new_ruid, uid_t new_euid)
KResultOr<FlatPtr> Process::sys$setresuid(uid_t new_ruid, uid_t new_euid, uid_t new_suid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_ruid == (uid_t)-1)
@ -125,6 +131,7 @@ KResultOr<FlatPtr> Process::sys$setresuid(uid_t new_ruid, uid_t new_euid, uid_t
KResultOr<FlatPtr> Process::sys$setresgid(gid_t new_rgid, gid_t new_egid, gid_t new_sgid)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (new_rgid == (gid_t)-1)
@ -150,6 +157,7 @@ KResultOr<FlatPtr> Process::sys$setresgid(gid_t new_rgid, gid_t new_egid, gid_t
KResultOr<FlatPtr> Process::sys$setgroups(size_t count, Userspace<const gid_t*> user_gids)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this)
REQUIRE_PROMISE(id);
if (!is_superuser())
return EPERM;