NAME¶

fgetgrent - get group file entry

SYNOPSIS¶

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

struct group *fgetgrent(FILE *stream);

fgetgrent():
Since glibc 2.19:
_DEFAULT_SOURCE
Glibc 2.19 and earlier:
_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;         /* NULL-terminated array of pointers


                               to names of 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. In the event of an error, errno is set to indicate the cause.

ERRORS¶

ENOMEM

Insufficient memory to allocate group structure.

ATTRIBUTES¶

For an explanation of the terms used in this section, see attributes(7).

CONFORMING TO¶

SVr4.

SEE ALSO¶

endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3), group(5)

COLOPHON¶

This page is part of release 5.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.