EXPORTENT(3)EXPORTENT(3)NAME
exportent, getexportent, setexportent, addexportent, remexportent,
endexportent, getexportopt - get exported file system information
SYNOPSIS
#include <stdio.h>
#include <exportent.h>
FILE *setexportent()
struct exportent *getexportent(filep)
FILE *filep;
int addexportent(filep, dirname, options)
FILE *filep;
char *dirname;
char *options;
int remexportent(filep, dirname)
FILE *filep;
char *dirname;
char *getexportopt(xent, opt)
struct exportent *xent;
char *opt;
void endexportent(filep)
FILE *filep;
DESCRIPTION
These routines access the exported filesystem information in /etc/xtab.
setexportent() opens the export information file and returns a file
pointer to use with getexportent, addexportent, remexportent, and
endexportent. getexportent() reads the next line from filep and
returns a pointer to an object with the following structure containing
the broken-out fields of a line in the file, /etc/xtab The fields have
meanings described in exports(5).
#define ACCESS_OPT ``access'' /* machines that can mount fs */
#define ROOT_OPT ``root'' /* machines with root access of fs */
#define RO_OPT ``ro'' /* export read-only */
#define RW_OPT ``rw'' /* export read-mostly */
#define ANON_OPT ``anon'' /* uid for anonymous requests */
struct exportent {
char *xent_dirname; /* directory (or file) to export */
char *xent_options; /* options, as above */
};
addexportent() adds the exportent() to the end of the open file filep.
It returns 0 if successful and -1 on failure. remexportent() removes
the indicated entry from the list. It also returns 0 on success and -1
on failure. getexportopt() scans the xent_options field of the
exportent() structure for a substring that matches opt. It returns the
string value of opt, or NULL if the option is not found.
endexportent() closes the file.
FILES
/etc/exports
/etc/xtab
SEE ALSOexports(5), exportfs(8)DIAGNOSTICS
NULL pointer (0) returned on EOF or error.
BUGS
The returned exportent() structure points to static information that is
overwritten in each call.
4 January 1987 EXPORTENT(3)