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NAME    [Toc]    [Back]

     getnetgrent, innetgr, setnetgrent, endnetgrent - netgroup database operations

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <netgroup.h>

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

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

     setnetgrent(const char *netgroup);


DESCRIPTION    [Toc]    [Back]

     These functions operate on the netgroup database file which is described
     in netgroup(5).

     The database defines a set of netgroups, each made up of one or more

           (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 NULL 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.  setnetgrent() also sets the offset 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 NULL
     those fields will match any string value in the netgroup member.

RETURN VALUES    [Toc]    [Back]

     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    [Toc]    [Back]

     /etc/netgroup  netgroup database file

SEE ALSO    [Toc]    [Back]

     netgroup(5), nsswitch.conf(5)

BUGS    [Toc]    [Back]

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

BSD                            January 16, 1999                            BSD
[ Back ]
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