personality.h

Go to the documentation of this file.

#ifndef _UAPI_LINUX_PERSONALITY_H
#define _UAPI_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 /* _UAPI_LINUX_PERSONALITY_H */