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/*
* Copyright (C) 1999-2006 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: Cns_readdirx.c,v $ $Revision: 1.2 $ $Date: 2006/08/01 12:41:12 $ CERN IT-PDP/DM Jean-Philippe Baud";
#endif /* not lint */
/* Cns_readdirx - read a directory entry including file attributes */
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#if defined(_WIN32)
#include <winsock2.h>
#else
#include <unistd.h>
#include <netinet/in.h>
#endif
#include "marshall.h"
#include "Cns_api.h"
#include "Cns.h"
#include "serrno.h"
struct Cns_direnstat DLL_DECL *
Cns_readdirx(Cns_DIR *dirp)
{
int c;
int direntsz;
struct Cns_direnstat *dp;
char func[16];
int getattr = 1;
gid_t gid;
int msglen;
int n;
int nbentries;
char *q;
char *rbp;
char repbuf[DIRBUFSZ+4];
char *sbp;
char sendbuf[REQBUFSZ];
uid_t uid;
strcpy (func, "Cns_readdirx");
uid = geteuid();
gid = getegid();
#if defined(_WIN32)
if (uid < 0 || gid < 0) {
Cns_errmsg (func, NS053);
serrno = SENOMAPFND;
return (NULL);
}
#endif
if (! dirp) {
serrno = EFAULT;
return (NULL);
}
/* compute size of client machine Cns_direnstat structure excluding d_name */
dp = (struct Cns_direnstat *) dirp->dd_buf;
direntsz = &dp->d_name[0] - (char *) dp;
if (dirp->dd_size == 0) { /* no data in the cache */
if (dirp->eod)
return (NULL);
/* Build request header */
sbp = sendbuf;
marshall_LONG (sbp, CNS_MAGIC);
marshall_LONG (sbp, CNS_READDIR);
q = sbp; /* save pointer. The next field will be updated */
msglen = 3 * LONGSIZE;
marshall_LONG (sbp, msglen);
/* Build request body */
marshall_LONG (sbp, uid);
marshall_LONG (sbp, gid);
marshall_WORD (sbp, getattr);
marshall_WORD (sbp, direntsz);
marshall_HYPER (sbp, dirp->fileid);
marshall_WORD (sbp, dirp->bod);
msglen = sbp - sendbuf;
marshall_LONG (q, msglen); /* update length field */
c = send2nsd (&dirp->dd_fd, NULL, sendbuf, msglen,
repbuf, sizeof(repbuf));
if (c < 0)
return (NULL);
rbp = repbuf;
unmarshall_WORD (rbp, nbentries);
if (nbentries == 0)
return (NULL); /* end of directory */
/* unmarshall reply into the Cns_direnstat structures */
dp = (struct Cns_direnstat *) dirp->dd_buf;
while (nbentries--) {
unmarshall_HYPER (rbp, dp->fileid);
unmarshall_WORD (rbp, dp->filemode);
unmarshall_LONG (rbp, dp->nlink);
unmarshall_LONG (rbp, dp->uid);
unmarshall_LONG (rbp, dp->gid);
unmarshall_HYPER (rbp, dp->filesize);
unmarshall_TIME_T (rbp, dp->atime);
unmarshall_TIME_T (rbp, dp->mtime);
unmarshall_TIME_T (rbp, dp->ctime);
unmarshall_WORD (rbp, dp->fileclass);
unmarshall_BYTE (rbp, dp->status);
unmarshall_STRING (rbp, dp->d_name);
dp->d_reclen = ((direntsz + strlen (dp->d_name) + 8) / 8) * 8;
dp = (struct Cns_direnstat *) ((char *) dp + dp->d_reclen);
}
dirp->bod = 0;
unmarshall_WORD (rbp, dirp->eod);
dirp->dd_size = (char *) dp - dirp->dd_buf;
}
dp = (struct Cns_direnstat *) (dirp->dd_buf + dirp->dd_loc);
dirp->dd_loc += dp->d_reclen;
if (dirp->dd_loc >= dirp->dd_size) { /* must refill next time */
dirp->dd_loc = 0;
dirp->dd_size = 0;
}
return (dp);
}
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