1FGETGRENT(3)               Linux Programmer's Manual              FGETGRENT(3)
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NAME

6       fgetgrent - get group file entry
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SYNOPSIS

9       #include <stdio.h>
10       #include <sys/types.h>
11       #include <grp.h>
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13       struct group *fgetgrent(FILE *stream);
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15   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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17       fgetgrent(): _SVID_SOURCE
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DESCRIPTION

20       The  fgetgrent()  function  returns a pointer to a structure containing
21       the group information from the file referred to by stream.   The  first
22       time  it  is  called it returns the first entry; thereafter, it returns
23       successive entries.  The file referred to by stream must have the  same
24       format as /etc/group (see group(5)).
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26       The group structure is defined in <grp.h> as follows:
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28           struct group {
29               char   *gr_name;        /* group name */
30               char   *gr_passwd;      /* group password */
31               gid_t   gr_gid;         /* group ID */
32               char  **gr_mem;         /* group members */
33           };
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RETURN VALUE

36       The  fgetgrent()  function  returns  a pointer to a group structure, or
37       NULL if there are no more entries or an error occurs.  In the event  of
38       an error, errno is set to indicate the cause.
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ERRORS

41       ENOMEM Insufficient memory to allocate group structure.
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CONFORMING TO

44       SVr4.
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SEE ALSO

47       endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgr‐
48       nam(3), putgrent(3), setgrent(3), group(5)
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COLOPHON

51       This page is part of release 3.53 of the Linux  man-pages  project.   A
52       description  of  the project, and information about reporting bugs, can
53       be found at http://www.kernel.org/doc/man-pages/.
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57GNU                               2013-04-19                      FGETGRENT(3)
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