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#ifndef _LINUX_PERSONALITY_H
#define _LINUX_PERSONALITY_H
/*
* Handling of different ABIs (personalities).
*/
struct exec_domain;
struct pt_regs;
extern int register_exec_domain(struct exec_domain *);
extern int unregister_exec_domain(struct exec_domain *);
extern int __set_personality(unsigned long);
/*
* Sysctl variables related to binary emulation.
*/
extern unsigned long abi_defhandler_coff;
extern unsigned long abi_defhandler_elf;
extern unsigned long abi_defhandler_lcall7;
extern unsigned long abi_defhandler_libcso;
extern int abi_fake_utsname;
/*
* Flags for bug emulation.
*
* These occupy the top three bytes.
*/
enum {
MMAP_PAGE_ZERO = 0x0100000,
ADDR_LIMIT_32BIT = 0x0800000,
SHORT_INODE = 0x1000000,
WHOLE_SECONDS = 0x2000000,
STICKY_TIMEOUTS = 0x4000000,
};
/*
* 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_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_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_MASK = 0x00ff,
};
/*
* Description of an execution domain.
*
* The first two members are refernced from assembly source
* and should stay where they are unless explicitly needed.
*/
typedef void (*handler_t)(int, struct pt_regs *);
struct exec_domain {
const char *name; /* name of the execdomain */
handler_t handler; /* handler for syscalls */
unsigned char pers_low; /* lowest personality */
unsigned char pers_high; /* highest personality */
unsigned long *signal_map; /* signal mapping */
unsigned long *signal_invmap; /* reverse signal mapping */
struct map_segment *err_map; /* error mapping */
struct map_segment *socktype_map; /* socket type mapping */
struct map_segment *sockopt_map; /* socket option mapping */
struct map_segment *af_map; /* address family mapping */
struct module *module; /* module context of the ed. */
struct exec_domain *next; /* linked list (internal) */
};
/*
* Return the base personality without flags.
*/
#define personality(pers) (pers & PER_MASK)
/*
* Personality of the currently running process.
*/
#define get_personality (current->personality)
/*
* Change personality of the currently running process.
*/
#define set_personality(pers) \
((current->personality == pers) ? 0 : __set_personality(pers))
/*
* Load an execution domain.
*/
#define get_exec_domain(ep) \
do { \
if (ep != NULL && ep->module != NULL) \
__MOD_INC_USE_COUNT(ep->module); \
} while (0)
/*
* Unload an execution domain.
*/
#define put_exec_domain(ep) \
do { \
if (ep != NULL && ep->module != NULL) \
__MOD_DEC_USE_COUNT(ep->module); \
} while (0)
#endif /* _LINUX_PERSONALITY_H */
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