grp.h(0P) POSIX Programmer's Manual grp.h(0P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEgrp.h — group structure
SYNOPSIS
#include <grp.h>
DESCRIPTION
The <grp.h> header shall declare the group structure, which shall
include the following members:
char *gr_name The name of the group.
gid_t gr_gid Numerical group ID.
char **gr_mem Pointer to a null-terminated array of character
pointers to member names.
The <grp.h> header shall define the gid_t and size_t types as described
in <sys/types.h>.
The following shall be declared as functions and may also be defined as
macros. Function prototypes shall be provided.
void endgrent(void);
struct group *getgrent(void);
struct group *getgrgid(gid_t);
int getgrgid_r(gid_t, struct group *, char *,
size_t, struct group **);
struct group *getgrnam(const char *);
int getgrnam_r(const char *, struct group *, char *,
size_t , struct group **);
void setgrent(void);
The following sections are informative.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
<sys_types.h>
The System Interfaces volume of POSIX.1‐2008, endgrent(), getgrgid(),
getgrnam()COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the source
files to man page format. To report such errors, see https://www.ker‐
nel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 grp.h(0P)
