diff options
Diffstat (limited to 'include/linux/personality.h')
| -rw-r--r-- | include/linux/personality.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/linux/personality.h b/include/linux/personality.h new file mode 100644 index 000000000..4f292251a --- /dev/null +++ b/include/linux/personality.h @@ -0,0 +1,51 @@ +#ifndef _PERSONALITY_H +#define _PERSONALITY_H + +#include <linux/linkage.h> +#include <linux/ptrace.h> + + +/* Flags for bug emulation. These occupy the top three bytes. */ +#define STICKY_TIMEOUTS 0x4000000 +#define WHOLE_SECONDS 0x2000000 + +/* Personality types. These go in the low byte. Avoid using the top bit, + * it will conflict with error returns. + */ +#define PER_MASK (0x00ff) +#define PER_LINUX (0x0000) +#define PER_SVR4 (0x0001 | STICKY_TIMEOUTS) +#define PER_SVR3 (0x0002 | STICKY_TIMEOUTS) +#define PER_SCOSVR3 (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS) +#define PER_WYSEV386 (0x0004 | STICKY_TIMEOUTS) +#define PER_ISCR4 (0x0005 | STICKY_TIMEOUTS) +#define PER_BSD (0x0006) + + +/* Prototype for an lcall7 syscall handler. */ +typedef asmlinkage void (*lcall7_func)(struct pt_regs *); + + +/* Description of an execution domain - personality range supported, + * lcall7 syscall handler, start up / shut down functions etc. + * N.B. The name and lcall7 handler must be where they are since the + * offset of the handler is hard coded in kernel/sys_call.S. + */ +struct exec_domain { + char *name; + lcall7_func handler; + unsigned char pers_low, pers_high; + unsigned long * signal_map; + unsigned long * signal_invmap; + int *use_count; + struct exec_domain *next; +}; + +extern struct exec_domain default_exec_domain; + +extern struct exec_domain *lookup_exec_domain(unsigned long personality); +extern int register_exec_domain(struct exec_domain *it); +extern int unregister_exec_domain(struct exec_domain *it); +extern asmlinkage int sys_personality(unsigned long personality); + +#endif /* _PERSONALITY_H */ |