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grp.h

Section: POSIX Programmer's Manual (0P)
Updated: 2013
Index Return to Main Contents
 

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.

 

NAME

grp.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 Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .


 

Index

PROLOG
NAME
SYNOPSIS
DESCRIPTION
APPLICATION USAGE
RATIONALE
FUTURE DIRECTIONS
SEE ALSO
COPYRIGHT


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