/* * grp.h */ #ifndef _GRP_H #define _GRP_H #include #include struct group { char *gr_name; char *gr_passwd; gid_t gr_gid; char **gr_mem; }; __extern int setgroups(size_t, const gid_t *); __extern struct group *getgrgid(gid_t); __extern struct group *getgrnam(const char *); #endif /* _GRP_H */