LXR linux/include/uapi/linux/personality.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _UAPI_LINUX_PERSONALITY_H
   3#define _UAPI_LINUX_PERSONALITY_H
   4
   5
   6/*
   7 * Flags for bug emulation.
   8 *
   9 * These occupy the top three bytes.
  10 */
  11enum {
  12        UNAME26 =               0x0020000,
  13        ADDR_NO_RANDOMIZE =     0x0040000,      /* disable randomization of VA space */
  14        FDPIC_FUNCPTRS =        0x0080000,      /* userspace function ptrs point to descriptors
  15                                                 * (signal handling)
  16                                                 */
  17        MMAP_PAGE_ZERO =        0x0100000,
  18        ADDR_COMPAT_LAYOUT =    0x0200000,
  19        READ_IMPLIES_EXEC =     0x0400000,
  20        ADDR_LIMIT_32BIT =      0x0800000,
  21        SHORT_INODE =           0x1000000,
  22        WHOLE_SECONDS =         0x2000000,
  23        STICKY_TIMEOUTS =       0x4000000,
  24        ADDR_LIMIT_3GB =        0x8000000,
  25};
  26
  27/*
  28 * Security-relevant compatibility flags that must be
  29 * cleared upon setuid or setgid exec:
  30 */
  31#define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC  | \
  32                            ADDR_NO_RANDOMIZE  | \
  33                            ADDR_COMPAT_LAYOUT | \
  34                            MMAP_PAGE_ZERO)
  35
  36/*
  37 * Personality types.
  38 *
  39 * These go in the low byte.  Avoid using the top bit, it will
  40 * conflict with error returns.
  41 */
  42enum {
  43        PER_LINUX =             0x0000,
  44        PER_LINUX_32BIT =       0x0000 | ADDR_LIMIT_32BIT,
  45        PER_LINUX_FDPIC =       0x0000 | FDPIC_FUNCPTRS,
  46        PER_SVR4 =              0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
  47        PER_SVR3 =              0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
  48        PER_SCOSVR3 =           0x0003 | STICKY_TIMEOUTS |
  49                                         WHOLE_SECONDS | SHORT_INODE,
  50        PER_OSR5 =              0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
  51        PER_WYSEV386 =          0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
  52        PER_ISCR4 =             0x0005 | STICKY_TIMEOUTS,
  53        PER_BSD =               0x0006,
  54        PER_SUNOS =             0x0006 | STICKY_TIMEOUTS,
  55        PER_XENIX =             0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
  56        PER_LINUX32 =           0x0008,
  57        PER_LINUX32_3GB =       0x0008 | ADDR_LIMIT_3GB,
  58        PER_IRIX32 =            0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
  59        PER_IRIXN32 =           0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
  60        PER_IRIX64 =            0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
  61        PER_RISCOS =            0x000c,
  62        PER_SOLARIS =           0x000d | STICKY_TIMEOUTS,
  63        PER_UW7 =               0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
  64        PER_OSF4 =              0x000f,                  /* OSF/1 v4 */
  65        PER_HPUX =              0x0010,
  66        PER_MASK =              0x00ff,
  67};
  68
  69
  70#endif /* _UAPI_LINUX_PERSONALITY_H */
  71