sys/compat/linux/linux_persona.h

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