.TH "IXP_SRV_WALKANDCLONE" 3 "2012 Dec" "libixp Manual"


.SH NAME

.P
ixp_srv_walkandclone, ixp_srv_readdir, ixp_srv_verifyfile, IxpLookupFn

.SH SYNOPSIS

.nf
#include <ixp_srvutil.h>

void ixp_srv_walkandclone(Ixp9Req *req, IxpLookupFn lookup);

void ixp_srv_readdir(Ixp9Req *req, IxpLookupFn lookup, void (*dostat)(IxpStat *, IxpFileId *));

bool ixp_srv_verifyfile(IxpFileId *file, IxpLookupFn lookup);

typedef IxpFileId* (*IxpLookupFn)(IxpFileId*, char*);
.fi


.SH DESCRIPTION

.P
These convenience functions simplify the writing of basic and
static file servers. They use a generic file lookup function
to simplify the process of walking, cloning, and returning
directory listings. Given the \fBIxpFileId(3)\fR of a directory and a
filename name should return a new IxpFileId (allocated via
\fBixp_srv_getfile(3)\fR) for the matching directory entry, or null
if there is no match. If the passed name is null, \fIlookup\fR
should return a linked list of IxpFileIds, one for each child
directory entry.

.P
ixp_srv_walkandclone handles the moderately complex process
of walking from a directory entry and cloning fids, and calls
\fBixp_respond(3)\fR. It should be called in response to a TWalk
request.

.P
ixp_srv_readdir should be called to handle read requests on
directories. It prepares a stat for each child of the
directory, taking into account the requested offset, and
calls \fBixp_respond(3)\fR. The \fIdostat\fR parameter must be a
function which fills the passed \fBIxpStat(3)\fR pointer based on
the contents of the passed IxpFileId.

.P
ixp_srv_verifyfile returns whether a file still exists in the
filesystem, and should be used by filesystems that invalidate
files once they have been deleted.

.SH SEE ALSO

.P
IxpFileId(3), ixp_getfile(3), ixp_freefile(3)

.\" man code generated by txt2tags 2.6 (http://txt2tags.org)
.\" cmdline: txt2tags -o- ixp_srv_walkandclone.man3