[mirror_ubuntu-hirsute-kernel.git] / include / linux / sched / coredump.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SCHED_COREDUMP_H
#define _LINUX_SCHED_COREDUMP_H

#include <linux/mm_types.h>

#define SUID_DUMP_DISABLE	0	/* No setuid dumping */
#define SUID_DUMP_USER		1	/* Dump as user of process */
#define SUID_DUMP_ROOT		2	/* Dump as root */

/* mm flags */

/* for SUID_DUMP_* above */
#define MMF_DUMPABLE_BITS 2
#define MMF_DUMPABLE_MASK ((1 << MMF_DUMPABLE_BITS) - 1)

extern void set_dumpable(struct mm_struct *mm, int value);
/*
 * This returns the actual value of the suid_dumpable flag. For things
 * that are using this for checking for privilege transitions, it must
 * test against SUID_DUMP_USER rather than treating it as a boolean
 * value.
 */
static inline int __get_dumpable(unsigned long mm_flags)
{
	return mm_flags & MMF_DUMPABLE_MASK;
}

static inline int get_dumpable(struct mm_struct *mm)
{
	return __get_dumpable(mm->flags);
}

/* coredump filter bits */
#define MMF_DUMP_ANON_PRIVATE	2
#define MMF_DUMP_ANON_SHARED	3
#define MMF_DUMP_MAPPED_PRIVATE	4
#define MMF_DUMP_MAPPED_SHARED	5
#define MMF_DUMP_ELF_HEADERS	6
#define MMF_DUMP_HUGETLB_PRIVATE 7
#define MMF_DUMP_HUGETLB_SHARED  8
#define MMF_DUMP_DAX_PRIVATE	9
#define MMF_DUMP_DAX_SHARED	10

#define MMF_DUMP_FILTER_SHIFT	MMF_DUMPABLE_BITS
#define MMF_DUMP_FILTER_BITS	9
#define MMF_DUMP_FILTER_MASK \
	(((1 << MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)
#define MMF_DUMP_FILTER_DEFAULT \
	((1 << MMF_DUMP_ANON_PRIVATE) |	(1 << MMF_DUMP_ANON_SHARED) |\
	 (1 << MMF_DUMP_HUGETLB_PRIVATE) | MMF_DUMP_MASK_DEFAULT_ELF)

#ifdef CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
# define MMF_DUMP_MASK_DEFAULT_ELF	(1 << MMF_DUMP_ELF_HEADERS)
#else
# define MMF_DUMP_MASK_DEFAULT_ELF	0
#endif
					/* leave room for more dump flags */
#define MMF_VM_MERGEABLE	16	/* KSM may merge identical pages */
#define MMF_VM_HUGEPAGE		17	/* set when VM_HUGEPAGE is set on vma */
/*
 * This one-shot flag is dropped due to necessity of changing exe once again
 * on NFS restore
 */
//#define MMF_EXE_FILE_CHANGED	18	/* see prctl_set_mm_exe_file() */

#define MMF_HAS_UPROBES		19	/* has uprobes */
#define MMF_RECALC_UPROBES	20	/* MMF_HAS_UPROBES can be wrong */
#define MMF_OOM_SKIP		21	/* mm is of no interest for the OOM killer */
#define MMF_UNSTABLE		22	/* mm is unstable for copy_from_user */
#define MMF_HUGE_ZERO_PAGE	23      /* mm has ever used the global huge zero page */
#define MMF_DISABLE_THP		24	/* disable THP for all VMAs */
#define MMF_OOM_VICTIM		25	/* mm is the oom victim */
#define MMF_OOM_REAP_QUEUED	26	/* mm was queued for oom_reaper */
#define MMF_MULTIPROCESS	27	/* mm is shared between processes */
#define MMF_DISABLE_THP_MASK	(1 << MMF_DISABLE_THP)

#define MMF_INIT_MASK		(MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\
				 MMF_DISABLE_THP_MASK)

#endif /* _LINUX_SCHED_COREDUMP_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
f7ccbae4 IM	2	#ifndef _LINUX_SCHED_COREDUMP_H
	3	#define _LINUX_SCHED_COREDUMP_H
	4
11701c67 IM	5	#include <linux/mm_types.h>
	6
	7	#define SUID_DUMP_DISABLE 0 /* No setuid dumping */
	8	#define SUID_DUMP_USER 1 /* Dump as user of process */
	9	#define SUID_DUMP_ROOT 2 /* Dump as root */
	10
	11	/* mm flags */
	12
	13	/* for SUID_DUMP_* above */
	14	#define MMF_DUMPABLE_BITS 2
	15	#define MMF_DUMPABLE_MASK ((1 << MMF_DUMPABLE_BITS) - 1)
	16
	17	extern void set_dumpable(struct mm_struct *mm, int value);
	18	/*
	19	* This returns the actual value of the suid_dumpable flag. For things
	20	* that are using this for checking for privilege transitions, it must
	21	* test against SUID_DUMP_USER rather than treating it as a boolean
	22	* value.
	23	*/
	24	static inline int __get_dumpable(unsigned long mm_flags)
	25	{
	26	return mm_flags & MMF_DUMPABLE_MASK;
	27	}
	28
	29	static inline int get_dumpable(struct mm_struct *mm)
	30	{
	31	return __get_dumpable(mm->flags);
	32	}
	33
	34	/* coredump filter bits */
	35	#define MMF_DUMP_ANON_PRIVATE 2
	36	#define MMF_DUMP_ANON_SHARED 3
	37	#define MMF_DUMP_MAPPED_PRIVATE 4
	38	#define MMF_DUMP_MAPPED_SHARED 5
	39	#define MMF_DUMP_ELF_HEADERS 6
	40	#define MMF_DUMP_HUGETLB_PRIVATE 7
	41	#define MMF_DUMP_HUGETLB_SHARED 8
	42	#define MMF_DUMP_DAX_PRIVATE 9
	43	#define MMF_DUMP_DAX_SHARED 10
	44
	45	#define MMF_DUMP_FILTER_SHIFT MMF_DUMPABLE_BITS
	46	#define MMF_DUMP_FILTER_BITS 9
	47	#define MMF_DUMP_FILTER_MASK \
	48	(((1 << MMF_DUMP_FILTER_BITS) - 1) << MMF_DUMP_FILTER_SHIFT)
	49	#define MMF_DUMP_FILTER_DEFAULT \
	50	((1 << MMF_DUMP_ANON_PRIVATE) \| (1 << MMF_DUMP_ANON_SHARED) \|\
	51	(1 << MMF_DUMP_HUGETLB_PRIVATE) \| MMF_DUMP_MASK_DEFAULT_ELF)
	52
	53	#ifdef CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
	54	# define MMF_DUMP_MASK_DEFAULT_ELF (1 << MMF_DUMP_ELF_HEADERS)
	55	#else
	56	# define MMF_DUMP_MASK_DEFAULT_ELF 0
	57	#endif
	58	/* leave room for more dump flags */
	59	#define MMF_VM_MERGEABLE 16 /* KSM may merge identical pages */
	60	#define MMF_VM_HUGEPAGE 17 /* set when VM_HUGEPAGE is set on vma */
	61	/*
	62	* This one-shot flag is dropped due to necessity of changing exe once again
	63	* on NFS restore
	64	*/
	65	//#define MMF_EXE_FILE_CHANGED 18 /* see prctl_set_mm_exe_file() */
	66
	67	#define MMF_HAS_UPROBES 19 /* has uprobes */
	68	#define MMF_RECALC_UPROBES 20 /* MMF_HAS_UPROBES can be wrong */
69	#define MMF_OOM_SKIP 21 /* mm is of no interest for the OOM killer */
70	#define MMF_UNSTABLE 22 /* mm is unstable for copy_from_user */
71	#define MMF_HUGE_ZERO_PAGE 23 /* mm has ever used the global huge zero page */
18600332	72	#define MMF_DISABLE_THP 24 /* disable THP for all VMAs */
4837fe37	73	#define MMF_OOM_VICTIM 25 /* mm is the oom victim */
9bcdeb51	74	#define MMF_OOM_REAP_QUEUED 26 /* mm was queued for oom_reaper */
67197a4f	75	#define MMF_MULTIPROCESS 27 /* mm is shared between processes */
18600332	76	#define MMF_DISABLE_THP_MASK (1 << MMF_DISABLE_THP)
11701c67	77
18600332 MH	78	#define MMF_INIT_MASK (MMF_DUMPABLE_MASK \| MMF_DUMP_FILTER_MASK \|\
18600332 MH	79	MMF_DISABLE_THP_MASK)
f7ccbae4 IM	80
f7ccbae4 IM	81	#endif /* _LINUX_SCHED_COREDUMP_H */