getgrgid(3) [redhat man page]

GETGRNAM(3)						     Linux Programmer's Manual						       GETGRNAM(3)

NAME

       getgrnam, getgrgid - get group file entry

SYNOPSIS

       #include <grp.h>
       #include <sys/types.h>

       struct group *getgrnam(const char *name);

       struct group *getgrgid(gid_t gid);

DESCRIPTION

       The  getgrnam()	function  returns a pointer to a structure containing the group information from /etc/group for the entry that matches the
       group name name.

       The getgrgid() function returns a pointer to a structure containing the group information from /etc/group for the entry	that  matches  the
       group gid gid.

       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;        /* group members */
	      };

RETURN VALUE

       The  getgrnam()	and  getgrgid()  functions  return the group information structure, or NULL if the matching entry is not found or an error
       occurs.

ERRORS

       ENOMEM Insufficient memory to allocate group information structure.

FILES

       /etc/group
	      Group database file

CONFORMING TO

       SVID 3, POSIX, BSD 4.3

SEE ALSO

       fgetgrent(3), getgrent(3), setgrent(3), endgrent(3)

GNU
								    1993-04-04							       GETGRNAM(3)

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

NAME

       fgetgrent - get group file entry

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(): _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;	       /* 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.

ERRORS

       ENOMEM Insufficient memory to allocate group structure.

CONFORMING TO

       SVr4.

SEE ALSO

       endgrent(3), fgetgrent_r(3), fopen(3), getgrent(3), getgrgid(3), getgrnam(3), putgrent(3), setgrent(3), group(5)

COLOPHON

       This  page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

GNU
								    2008-07-10							      FGETGRENT(3)