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

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