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/*
* Copyright (C) 1999-2006 by CERN/IT/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: Cns_opendir.c,v $ $Revision: 1.3 $ $Date: 2006/08/01 12:41:12 $ CERN IT-PDP/DM Jean-Philippe Baud";
#endif /* not lint */
/* Cns_opendir - open a directory entry */
#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"
Cns_DIR DLL_DECL *
Cns_opendirxg(char *host, const char *path, const char *guid)
{
char *actual_path;
char *actual_server;
int c, n;
Cns_DIR *dirp = NULL;
char func[16];
gid_t gid;
int msglen;
char *q;
char *rbp;
char repbuf[8];
int s = -1;
char *sbp;
char server[CA_MAXHOSTNAMELEN+1];
struct Cns_api_thread_info *thip;
char sendbuf[REQBUFSZ];
uid_t uid;
strcpy (func, "Cns_opendir");
if (Cns_apiinit (&thip))
return (NULL);
uid = geteuid();
gid = getegid();
#if defined(_WIN32)
if (uid < 0 || gid < 0) {
Cns_errmsg (func, NS053);
serrno = SENOMAPFND;
return (NULL);
}
#endif
if (! path && ! guid) {
serrno = EFAULT;
return (NULL);
}
if (path && strlen (path) > CA_MAXPATHLEN) {
serrno = ENAMETOOLONG;
return (NULL);
}
if (guid && strlen (guid) > CA_MAXGUIDLEN) {
serrno = EINVAL;
return (NULL);
}
if ((dirp = (Cns_DIR *) malloc (sizeof(Cns_DIR) + DIRBUFSZ)) == NULL) {
serrno = ENOMEM;
return (NULL);
}
if (path && Cns_selectsrvr (path, thip->server, server, &actual_path))
return (NULL);
if (path && actual_path != path)
actual_server = server;
else if (host)
actual_server = host;
else if (path)
actual_server = server;
else
actual_server = NULL;
/* Build request header */
sbp = sendbuf;
marshall_LONG (sbp, guid ? CNS_MAGIC2 : CNS_MAGIC);
marshall_LONG (sbp, CNS_OPENDIR);
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_HYPER (sbp, thip->cwd);
if (path) {
marshall_STRING (sbp, actual_path);
} else {
marshall_STRING (sbp, "");
}
if (guid) {
marshall_STRING (sbp, guid);
} else {
marshall_STRING (sbp, "");
}
msglen = sbp - sendbuf;
marshall_LONG (q, msglen); /* update length field */
c = send2nsd (&s, actual_server, sendbuf, msglen, repbuf, sizeof(repbuf));
if (c < 0) {
if (serrno == SENAMETOOLONG) serrno = ENAMETOOLONG;
free (dirp);
return (NULL);
}
memset (dirp, 0, sizeof(Cns_DIR));
dirp->dd_fd = s;
rbp = repbuf;
unmarshall_HYPER (rbp, dirp->fileid);
dirp->bod = 1;
dirp->dd_buf = (char *) dirp + sizeof(Cns_DIR);
return (dirp);
}
Cns_DIR DLL_DECL *
Cns_opendirg(const char *path, const char *guid)
{
return (Cns_opendirxg (NULL, path, guid));
}
Cns_DIR DLL_DECL *
Cns_opendir(const char *path)
{
return (Cns_opendirg (path, NULL));
}
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