17 #include <bits/alltypes.h>
27 struct group
*getgrgid(gid_t
);
28 struct group
*getgrnam(const char *);
30 int getgrgid_r(gid_t
, struct group
*, char *, size_t, struct group
**);
31 int getgrnam_r(const char *, struct group
*, char *, size_t, struct group
**);
33 struct group
*getgrent(void);
38 struct group
*fgetgrent(FILE *stream
);
39 int putgrent(const struct group
*, FILE *);
42 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
43 int getgrouplist(const char *, gid_t
, gid_t
*, int *);
44 int setgroups(size_t, const gid_t
*);
45 int initgroups(const char *, gid_t
);