personality.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- #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_HPUX = 0x000f,
- PER_OSF4 = 0x0010, /* OSF/1 v4 */
- 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 */