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Linux 9dbcd5f6333d 5.15.0-102-generic #112-Ubuntu SMP Tue Mar 5 16:50:32 UTC 2024 x86_64
Current File : //usr/include/linux/personality.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_PERSONALITY_H
#define _LINUX_PERSONALITY_H


/*
 * Flags for bug emulation.
 *
 * These occupy the top three bytes.
 */
enum {
	UNAME26	=               0x0020000,
	ADDR_NO_RANDOMIZE = 	0x0040000,	/* disable randomization of VA space */
	FDPIC_FUNCPTRS =	0x0080000,	/* userspace function ptrs point to descriptors
						 * (signal handling)
						 */
	MMAP_PAGE_ZERO =	0x0100000,
	ADDR_COMPAT_LAYOUT =	0x0200000,
	READ_IMPLIES_EXEC =	0x0400000,
	ADDR_LIMIT_32BIT =	0x0800000,
	SHORT_INODE =		0x1000000,
	WHOLE_SECONDS =		0x2000000,
	STICKY_TIMEOUTS	=	0x4000000,
	ADDR_LIMIT_3GB = 	0x8000000,
};

/*
 * Security-relevant compatibility flags that must be
 * cleared upon setuid or setgid exec:
 */
#define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC  | \
			    ADDR_NO_RANDOMIZE  | \
			    ADDR_COMPAT_LAYOUT | \
			    MMAP_PAGE_ZERO)

/*
 * Personality types.
 *
 * These go in the low byte.  Avoid using the top bit, it will
 * conflict with error returns.
 */
enum {
	PER_LINUX =		0x0000,
	PER_LINUX_32BIT =	0x0000 | ADDR_LIMIT_32BIT,
	PER_LINUX_FDPIC =	0x0000 | FDPIC_FUNCPTRS,
	PER_SVR4 =		0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
	PER_SVR3 =		0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
	PER_SCOSVR3 =		0x0003 | STICKY_TIMEOUTS |
					 WHOLE_SECONDS | SHORT_INODE,
	PER_OSR5 =		0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
	PER_WYSEV386 =		0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
	PER_ISCR4 =		0x0005 | STICKY_TIMEOUTS,
	PER_BSD =		0x0006,
	PER_SUNOS =		0x0006 | STICKY_TIMEOUTS,
	PER_XENIX =		0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
	PER_LINUX32 =		0x0008,
	PER_LINUX32_3GB =	0x0008 | ADDR_LIMIT_3GB,
	PER_IRIX32 =		0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
	PER_IRIXN32 =		0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
	PER_IRIX64 =		0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
	PER_RISCOS =		0x000c,
	PER_SOLARIS =		0x000d | STICKY_TIMEOUTS,
	PER_UW7 =		0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
	PER_OSF4 =		0x000f,			 /* OSF/1 v4 */
	PER_HPUX =		0x0010,
	PER_MASK =		0x00ff,
};


#endif /* _LINUX_PERSONALITY_H */
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