From 4f365e7a5d448dab7e0bb56ed32ff2bfddd134bd Mon Sep 17 00:00:00 2001 From: "Christian Brauner (Amutable)" Date: Wed, 20 May 2026 23:48:52 +0200 Subject: sched/coredump: introduce enum task_dumpable Replace the SUID_DUMP_DISABLE/USER/ROOT preprocessor constants with enum task_dumpable. Numeric values are preserved (kernel.suid_dumpable sysctl and prctl(PR_SET_DUMPABLE) ABI), so this is a pure rename with no behavioral change. Subsequent commits relocate dumpability onto a per-task structure where the enum type will allow stronger type-checking on the new API. Reviewed-by: Jann Horn Reviewed-by: David Hildenbrand (arm) Link: https://patch.msgid.link/20260520-work-task_exec_state-v3-1-69f895bc1385@kernel.org Signed-off-by: Christian Brauner (Amutable) --- kernel/exit.c | 2 +- kernel/ptrace.c | 4 ++-- kernel/sys.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) (limited to 'kernel') diff --git a/kernel/exit.c b/kernel/exit.c index f50d73c272d6..507eda655e8d 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -571,7 +571,7 @@ static void exit_mm(void) */ smp_mb__after_spinlock(); local_irq_disable(); - current->user_dumpable = (get_dumpable(mm) == SUID_DUMP_USER); + current->user_dumpable = (get_dumpable(mm) == TASK_DUMPABLE_OWNER); current->mm = NULL; membarrier_update_current_mm(NULL); enter_lazy_tlb(mm, current); diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 130043bfc209..07398c9c8fe3 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -53,7 +53,7 @@ int ptrace_access_vm(struct task_struct *tsk, unsigned long addr, if (!tsk->ptrace || (current != tsk->parent) || - ((get_dumpable(mm) != SUID_DUMP_USER) && + ((get_dumpable(mm) != TASK_DUMPABLE_OWNER) && !ptracer_capable(tsk, mm->user_ns))) { mmput(mm); return 0; @@ -276,7 +276,7 @@ static bool task_still_dumpable(struct task_struct *task, unsigned int mode) { struct mm_struct *mm = task->mm; if (mm) { - if (get_dumpable(mm) == SUID_DUMP_USER) + if (get_dumpable(mm) == TASK_DUMPABLE_OWNER) return true; return ptrace_has_cap(mm->user_ns, mode); } diff --git a/kernel/sys.c b/kernel/sys.c index 62e842055cc9..f1189f719db5 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -2568,7 +2568,7 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, error = get_dumpable(me->mm); break; case PR_SET_DUMPABLE: - if (arg2 != SUID_DUMP_DISABLE && arg2 != SUID_DUMP_USER) { + if (arg2 != TASK_DUMPABLE_OFF && arg2 != TASK_DUMPABLE_OWNER) { error = -EINVAL; break; } -- cgit v1.2.3