x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
fgetgrent(3) Library Functions Manual fgetgrent(3)
NAME
fgetgrent - get group file entry
LIBRARY
Standard C library (libc, -lc)
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():
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 error.
ERRORS
ENOMEM Insufficient memory to allocate group structure.
ATTRIBUTES
For an explanation of the terms used in this section, see at-
tributes(7).
+---------------------------+---------------+--------------------------+
|Interface | Attribute | Value |
+---------------------------+---------------+--------------------------+
|fgetgrent() | Thread safety | MT-Unsafe race:fgetgrent |
+---------------------------+---------------+--------------------------+
STANDARDS
None.
HISTORY
SVr4.
SEE ALSO
endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgr-
nam(3), putgrent(3), setgrent(3), group(5)
Linux man-pages 6.04 2023-03-30 fgetgrent(3)
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