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  */
  11 enum {
  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  */
  42 enum {
  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 */