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

grp.h(0P)                 POSIX Programmer's Manual                grp.h(0P)

PROLOG         top

       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         top

       grp.h — group structure

SYNOPSIS         top

       #include <grp.h>

DESCRIPTION         top

       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         top

       None.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       sys_types.h(0p)
       The System Interfaces volume of POSIX.1‐2008, endgrent(3p),
       getgrgid(3p), getgrnam(3p)

COPYRIGHT         top

       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 .
IEEE/The Open Group                 2013                           grp.h(0P)

Pages that refer to this page: endgrent(3p)getgrgid(3p)getgrnam(3p)