1 2 #ifndef LINUX_PERSONALITY_H 3 #define LINUX_PERSONALITY_H 4 5 /* 6 * Flags for bug emulation. 7 * 8 * These occupy the top three bytes. 9 */ 10 enum { 11 LINUX_UNAME26 = 0x0020000, 12 LINUX_ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization 13 * of VA space 14 */ 15 LINUX_FDPIC_FUNCPTRS = 0x0080000, /* userspace function 16 * ptrs point to descriptors 17 * (signal handling) 18 */ 19 LINUX_MMAP_PAGE_ZERO = 0x0100000, 20 LINUX_ADDR_COMPAT_LAYOUT = 0x0200000, 21 LINUX_READ_IMPLIES_EXEC = 0x0400000, 22 LINUX_ADDR_LIMIT_32BIT = 0x0800000, 23 LINUX_SHORT_INODE = 0x1000000, 24 LINUX_WHOLE_SECONDS = 0x2000000, 25 LINUX_STICKY_TIMEOUTS = 0x4000000, 26 LINUX_ADDR_LIMIT_3GB = 0x8000000, 27 }; 28 29 /* 30 * Security-relevant compatibility flags that must be 31 * cleared upon setuid or setgid exec: 32 */ 33 #define LINUX_PER_CLEAR_ON_SETID (LINUX_READ_IMPLIES_EXEC | \ 34 LINUX_ADDR_NO_RANDOMIZE | \ 35 LINUX_ADDR_COMPAT_LAYOUT | \ 36 LINUX_MMAP_PAGE_ZERO) 37 38 /* 39 * Personality types. 40 * 41 * These go in the low byte. Avoid using the top bit, it will 42 * conflict with error returns. 43 */ 44 enum { 45 LINUX_PER_LINUX = 0x0000, 46 LINUX_PER_LINUX_32BIT = 0x0000 | LINUX_ADDR_LIMIT_32BIT, 47 LINUX_PER_LINUX_FDPIC = 0x0000 | LINUX_FDPIC_FUNCPTRS, 48 LINUX_PER_LINUX32 = 0x0008, 49 LINUX_PER_LINUX32_3GB = 0x0008 | LINUX_ADDR_LIMIT_3GB, 50 LINUX_PER_MASK = 0x00ff, 51 }; 52 53 #endif /* LINUX_PERSONALITY_H */ 54