lids_capflag.h

来自「关于LINUX安全内核的源代码」· C头文件 代码 · 共 43 行

#ifndef LIDS_CAPFLAG_H
#define LIDS_CAPFLAG_H

#define EINVAL -1
#define ENOENT -2


typedef struct entry_s {
	struct entry_s *next;
	char *name;			/* Name of entry */
	int val;			/* Value of entry */
	char *desc;			/* Short description of entry */
	int pos;			/* Location of entry */
} entry_t;

extern entry_t flag_list[];
extern entry_t cap_list[];

#define for_each_entry(list,c)	for ((c) = list; (c)->next != NULL; (c) = (c)->next)


extern entry_t *getentrybyname(entry_t *list, const char *name);
extern entry_t *getentrybyval(entry_t *list, int val);
extern entry_t *getentrybypos(entry_t *list, int pos);

extern void setentry(entry_t *list);
extern void endentry(entry_t *list);


#define FLAG_FULL_SET           (~0)
#define FLAG_TO_MASK(flag)      (1 << (flag))
#define flag_raise(flag, bit)   ((flag) |= FLAG_TO_MASK(bit))
#define flag_lower(flag, bit)   ((flag) &= ~FLAG_TO_MASK(bit))
#define flag_raised(flag, bit)  ((flag) & FLAG_TO_MASK(bit) & FLAG_FULL_SET)

#define CAP_FULL_SET            (~0)
#define CAP_TO_MASK(cap)       (1 << (cap))
#define cap_raise(cap, bit)    ((cap) |= CAP_TO_MASK(bit))
#define cap_lower(cap, bit)    ((cap) &= ~CAP_TO_MASK(bit))
#define cap_raised(cap, bit)   ((cap) & CAP_TO_MASK(bit) & CAP_FULL_SET)

#endif