GETNETGRENT(3) NetBSD Library Functions Manual GETNETGRENT(3)
getnetgrent, innetgr, setnetgrent, endnetgrent -- netgroup database oper- ations
Standard C Library (libc, -lc)
#include <netgroup.h> int getnetgrent(const char **host, const char **user, const char **domain); int innetgr(const char *netgroup, const char *host, const char *user, const char *domain); void setnetgrent(const char *netgroup); void endnetgrent(void);
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 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 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.
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.
/etc/netgroup netgroup database file
The function getnetgrent() returns pointers to dynamically allocated data areas that are free'd when the function endnetgrent() is called. NetBSD 6.0 January 16, 1999 NetBSD 6.0
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