1 /* 2 */ 3 4 #ifndef LINUX_PERSONALITY_H 5 #define LINUX_PERSONALITY_H 6 7 /* 8 * Flags for bug emulation. 9 * 10 * These occupy the top three bytes. 11 */ 12 enum { 13 LINUX_UNAME26 = 0x0020000, 14 LINUX_ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization 15 * of VA space 16 */ 17 LINUX_FDPIC_FUNCPTRS = 0x0080000, /* userspace function 18 * ptrs point to descriptors 19 * (signal handling) 20 */ 21 LINUX_MMAP_PAGE_ZERO = 0x0100000, 22 LINUX_ADDR_COMPAT_LAYOUT = 0x0200000, 23 LINUX_READ_IMPLIES_EXEC = 0x0400000, 24 LINUX_ADDR_LIMIT_32BIT = 0x0800000, 25 LINUX_SHORT_INODE = 0x1000000, 26 LINUX_WHOLE_SECONDS = 0x2000000, 27 LINUX_STICKY_TIMEOUTS = 0x4000000, 28 LINUX_ADDR_LIMIT_3GB = 0x8000000, 29 }; 30 31 /* 32 * Security-relevant compatibility flags that must be 33 * cleared upon setuid or setgid exec: 34 */ 35 #define LINUX_PER_CLEAR_ON_SETID (LINUX_READ_IMPLIES_EXEC | \ 36 LINUX_ADDR_NO_RANDOMIZE | \ 37 LINUX_ADDR_COMPAT_LAYOUT | \ 38 LINUX_MMAP_PAGE_ZERO) 39 40 /* 41 * Personality types. 42 * 43 * These go in the low byte. Avoid using the top bit, it will 44 * conflict with error returns. 45 */ 46 enum { 47 LINUX_PER_LINUX = 0x0000, 48 LINUX_PER_LINUX_32BIT = 0x0000 | LINUX_ADDR_LIMIT_32BIT, 49 LINUX_PER_LINUX_FDPIC = 0x0000 | LINUX_FDPIC_FUNCPTRS, 50 LINUX_PER_LINUX32 = 0x0008, 51 LINUX_PER_LINUX32_3GB = 0x0008 | LINUX_ADDR_LIMIT_3GB, 52 LINUX_PER_MASK = 0x00ff, 53 }; 54 55 #endif /* LINUX_PERSONALITY_H */ 56