endnetgrent man page on FreeBSD

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GETNETGRENT(3)		 BSD Library Functions Manual		GETNETGRENT(3)

NAME
     getnetgrent, innetgr, setnetgrent, endnetgrent — netgroup database opera‐
     tions

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <netdb.h>

     int
     getnetgrent(char **host, char **user, char **domain);

     int
     innetgr(const char *netgroup, const char *host, const char *user,
	 const char *domain);

     void
     setnetgrent(const char *netgroup);

     void
     endnetgrent(void);

DESCRIPTION
     These functions operate on the netgroup database file /etc/netgroup which
     is described in netgroup(5).  The database defines a set of netgroups,
     each made up of one or more triples:

	   (host, user, domain)
     that defines a combination of host, user and domain.  Any of the three
     fields may be specified as ``wildcards'' that match any string.

     The function getnetgrent() sets the three pointer arguments to the
     strings of the next member of the current netgroup.  If any of the string
     pointers are (char *)0 that field is considered a wildcard.

     The functions setnetgrent() and endnetgrent() set the current netgroup
     and terminate the current netgroup respectively.  If setnetgrent() is
     called with a different netgroup than the previous call, an implicit
     endnetgrent() is implied.	The setnetgrent() function also sets the off‐
     set to the first member of the netgroup.

     The function innetgr() searches for a match of all fields within the
     specified group.  If any of the host, user, or domain arguments are (char
     *)0 those fields will match any string value in the netgroup member.

RETURN VALUES
     The function getnetgrent() returns 0 for ``no more netgroup members'' and
     1 otherwise.  The function innetgr() returns 1 for a successful match and
     0 otherwise.  The functions setnetgrent() and endnetgrent() have no
     return value.

FILES
     /etc/netgroup  netgroup database file

COMPATIBILITY
     The netgroup members have three string fields to maintain compatibility
     with other vendor implementations, however it is not obvious what use the
     domain string has within BSD.

SEE ALSO
     netgroup(5)

BUGS
     The function getnetgrent() returns pointers to dynamically allocated data
     areas that are freed when the function endnetgrent() is called.

BSD				 June 4, 1993				   BSD
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