1*23e8912cSDmitry Chagin 2*23e8912cSDmitry Chagin #ifndef LINUX_PERSONALITY_H 3*23e8912cSDmitry Chagin #define LINUX_PERSONALITY_H 4*23e8912cSDmitry Chagin 5*23e8912cSDmitry Chagin /* 6*23e8912cSDmitry Chagin * Flags for bug emulation. 7*23e8912cSDmitry Chagin * 8*23e8912cSDmitry Chagin * These occupy the top three bytes. 9*23e8912cSDmitry Chagin */ 10*23e8912cSDmitry Chagin enum { 11*23e8912cSDmitry Chagin LINUX_UNAME26 = 0x0020000, 12*23e8912cSDmitry Chagin LINUX_ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization 13*23e8912cSDmitry Chagin * of VA space 14*23e8912cSDmitry Chagin */ 15*23e8912cSDmitry Chagin LINUX_FDPIC_FUNCPTRS = 0x0080000, /* userspace function 16*23e8912cSDmitry Chagin * ptrs point to descriptors 17*23e8912cSDmitry Chagin * (signal handling) 18*23e8912cSDmitry Chagin */ 19*23e8912cSDmitry Chagin LINUX_MMAP_PAGE_ZERO = 0x0100000, 20*23e8912cSDmitry Chagin LINUX_ADDR_COMPAT_LAYOUT = 0x0200000, 21*23e8912cSDmitry Chagin LINUX_READ_IMPLIES_EXEC = 0x0400000, 22*23e8912cSDmitry Chagin LINUX_ADDR_LIMIT_32BIT = 0x0800000, 23*23e8912cSDmitry Chagin LINUX_SHORT_INODE = 0x1000000, 24*23e8912cSDmitry Chagin LINUX_WHOLE_SECONDS = 0x2000000, 25*23e8912cSDmitry Chagin LINUX_STICKY_TIMEOUTS = 0x4000000, 26*23e8912cSDmitry Chagin LINUX_ADDR_LIMIT_3GB = 0x8000000, 27*23e8912cSDmitry Chagin }; 28*23e8912cSDmitry Chagin 29*23e8912cSDmitry Chagin /* 30*23e8912cSDmitry Chagin * Security-relevant compatibility flags that must be 31*23e8912cSDmitry Chagin * cleared upon setuid or setgid exec: 32*23e8912cSDmitry Chagin */ 33*23e8912cSDmitry Chagin #define LINUX_PER_CLEAR_ON_SETID (LINUX_READ_IMPLIES_EXEC | \ 34*23e8912cSDmitry Chagin LINUX_ADDR_NO_RANDOMIZE | \ 35*23e8912cSDmitry Chagin LINUX_ADDR_COMPAT_LAYOUT | \ 36*23e8912cSDmitry Chagin LINUX_MMAP_PAGE_ZERO) 37*23e8912cSDmitry Chagin 38*23e8912cSDmitry Chagin /* 39*23e8912cSDmitry Chagin * Personality types. 40*23e8912cSDmitry Chagin * 41*23e8912cSDmitry Chagin * These go in the low byte. Avoid using the top bit, it will 42*23e8912cSDmitry Chagin * conflict with error returns. 43*23e8912cSDmitry Chagin */ 44*23e8912cSDmitry Chagin enum { 45*23e8912cSDmitry Chagin LINUX_PER_LINUX = 0x0000, 46*23e8912cSDmitry Chagin LINUX_PER_LINUX_32BIT = 0x0000 | LINUX_ADDR_LIMIT_32BIT, 47*23e8912cSDmitry Chagin LINUX_PER_LINUX_FDPIC = 0x0000 | LINUX_FDPIC_FUNCPTRS, 48*23e8912cSDmitry Chagin LINUX_PER_LINUX32 = 0x0008, 49*23e8912cSDmitry Chagin LINUX_PER_LINUX32_3GB = 0x0008 | LINUX_ADDR_LIMIT_3GB, 50*23e8912cSDmitry Chagin LINUX_PER_MASK = 0x00ff, 51*23e8912cSDmitry Chagin }; 52*23e8912cSDmitry Chagin 53*23e8912cSDmitry Chagin #endif /* LINUX_PERSONALITY_H */ 54