#ifndef _GRP_H
#define _GRP_H

#include <sys/cdefs.h>
#include <sys/types.h>

__BEGIN_DECLS

struct group
  {
    char *gr_name;		/* Group name.	*/
    char *gr_passwd;		/* Password.	*/
    gid_t gr_gid;		/* Group ID.	*/
    char **gr_mem;		/* Member list.	*/
  };

struct group *getgrgid (gid_t uid) __THROW;
struct group *getgrnam (const char *name) __THROW;

struct group *getgrent(void) __THROW;
void setgrent(void) __THROW;
void endgrent(void) __THROW;

__writememsz__(2,3)
int getgrent_r(struct group* res, char* buf, size_t buflen,
	       struct group** res_sig) __THROW;
__writememsz__(3,4)
int getgrnam_r(const char* name,
	       struct group* res, char* buf, size_t buflen,
	       struct group** res_sig) __THROW;
__writememsz__(3,4)
int getgrgid_r(uid_t uid,
	       struct group* res, char* buf, size_t buflen,
	       struct group** res_sig) __THROW;

int setgroups(size_t n, const gid_t* groups) __THROW;
__readmemsz__(2,1)
int setgroups32(size_t n, const gid32_t* groups) __THROW;
__readmem__(1)
int initgroups(const char* user, gid_t group) __THROW;
__readmem__(1) __writemem__(3)
int getgrouplist(const char* user,gid_t group,gid_t* groups,int* ngroups) __THROW;

__END_DECLS

#endif