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fgetgrent

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 stream. The first time it is called it returns the first entry; thereafter, it returns successive entries. The file stream must have the same format as /etc/group.

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 the group information structure, or NULL if there are no more entries or an error occurs.

ERRORS

ENOMEM

Insufficient memory to allocate group information structure.

CONFORMING TO

SVr4

SEE ALSO

endgrent(3), fgetgrent_r(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3)