FGETGRENT(3) Linux Programmer s Manual FGETGRENT(3)

NAME fgetgrent - get group file entry

SYNOPSIS #include <stdio.h> #include <sys/types.h> #include <grp.h>

struct group *fgetgrent(FILE *stream);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

fgetgrent(): _SVID_SOURCE

DESCRIPTION The fgetgrent() function returns a pointer to a structure containing the group information from the file referred to by stream. The first time it is called it returns the first entry; thereafter, it returns successive entries. The file referred to by stream must have the same format as /etc/group (see group(5)).

The group structure is defined in <grp.h> as follows:

struct group { char *gr_name; /* group name */ char *gr_passwd; /* group password */ gid_t gr_gid; /* group ID */ char **gr_mem; /* group members */ };

RETURN VALUE The fgetgrent() function returns a pointer to a group structure, or NULL if there are no more entries or an error occurs.

ERRORS ENOMEM Insufficient memory to allocate group structure.

CONFORMING TO SVr4.

SEE ALSO endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgr- nam(3), putgrent(3), setgrent(3), group(5)

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.

GNU 2008-07-10 FGETGRENT(3)