coredump.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _LINUX_SCHED_COREDUMP_H
 3#define _LINUX_SCHED_COREDUMP_H
 4
 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
11static inline unsigned long __mm_flags_get_dumpable(const struct mm_struct *mm)
12{
13	/*
14	 * By convention, dumpable bits are contained in first 32 bits of the
15	 * bitmap, so we can simply access this first unsigned long directly.
16	 */
17	return __mm_flags_get_word(mm);
18}
19
20static inline void __mm_flags_set_mask_dumpable(struct mm_struct *mm, int value)
21{
22	__mm_flags_set_mask_bits_word(mm, MMF_DUMPABLE_MASK, value);
23}
24
25extern void set_dumpable(struct mm_struct *mm, int value);
26/*
27 * This returns the actual value of the suid_dumpable flag. For things
28 * that are using this for checking for privilege transitions, it must
29 * test against SUID_DUMP_USER rather than treating it as a boolean
30 * value.
31 */
32static inline int __get_dumpable(unsigned long mm_flags)
33{
34	return mm_flags & MMF_DUMPABLE_MASK;
35}
36
37static inline int get_dumpable(struct mm_struct *mm)
38{
39	unsigned long flags = __mm_flags_get_dumpable(mm);
40
41	return __get_dumpable(flags);
42}
43
44#endif /* _LINUX_SCHED_COREDUMP_H */