/**
* @brief Helper to verify validity of export ID's
*
* @l3_arg NFS argument
* @req SVC request
*
* @return nfsstat3
*/
static enum nfsstat3
nfs3_verify_exportid(struct LINK3args *l3_arg, struct svc_req *req)
{
const short to_exportid = nfs3_FhandleToExportId(&l3_arg->link.dir);
const short from_exportid = nfs3_FhandleToExportId(&l3_arg->file);
if (to_exportid < 0 || from_exportid < 0) {
LogInfo(COMPONENT_DISPATCH,
"NFS%d LINK Request from client %s has badly formed handle for link dir",
req->rq_msg.cb_vers,
op_ctx->client ?
op_ctx->client->hostaddr_str :
"unknown client");
return NFS3ERR_BADHANDLE;
}
/* Both objects have to be in the same filesystem */
if (to_exportid != from_exportid)
return NFS3ERR_XDEV;
return NFS3_OK;
}
int nfs3_link(nfs_arg_t *arg,
nfs_worker_data_t *worker,
struct svc_req *req, nfs_res_t *res)
{
const char *link_name = arg->arg_link3.link.name;
cache_entry_t *target_entry = NULL;
cache_entry_t *parent_entry = NULL;
pre_op_attr pre_parent = {
.attributes_follow = false
};
cache_inode_status_t cache_status = CACHE_INODE_SUCCESS;
short to_exportid = 0;
short from_exportid = 0;
int rc = NFS_REQ_OK;
if (isDebug(COMPONENT_NFSPROTO)) {
char strto[LEN_FH_STR], strfrom[LEN_FH_STR];
nfs_FhandleToStr(req->rq_vers,
&(arg->arg_link3.file),
NULL,
strfrom);
nfs_FhandleToStr(req->rq_vers,
&(arg->arg_link3.link.dir),
NULL,
strto);
LogDebug(COMPONENT_NFSPROTO,
"REQUEST PROCESSING: Calling nfs3_link handle: %s to "
"handle: %s name: %s", strfrom, strto, link_name);
}
/* to avoid setting it on each error case */
res->res_link3.LINK3res_u.resfail.file_attributes.attributes_follow =
FALSE;
res->res_link3.LINK3res_u.resfail.linkdir_wcc.before.attributes_follow =
FALSE;
res->res_link3.LINK3res_u.resfail.linkdir_wcc.after.attributes_follow =
FALSE;
/* Get the exportids for the two handles. */
to_exportid = nfs3_FhandleToExportId(&(arg->arg_link3.link.dir));
from_exportid = nfs3_FhandleToExportId(&(arg->arg_link3.file));
/* Validate the to_exportid */
if (to_exportid < 0 || from_exportid < 0) {
LogInfo(COMPONENT_DISPATCH,
"NFS%d LINK Request from client %s has badly formed handle for link dir",
req->rq_vers,
op_ctx->client
? op_ctx->client->hostaddr_str
: "unknown client");
/* Bad handle, report to client */
res->res_link3.status = NFS3ERR_BADHANDLE;
goto out;
}
/* Both objects have to be in the same filesystem */
if (to_exportid != from_exportid) {
res->res_link3.status = NFS3ERR_XDEV;
goto out;
}
/* Get entry for parent directory */
parent_entry = nfs3_FhandleToCache(&arg->arg_link3.link.dir,
&res->res_link3.status,
&rc);
if (parent_entry == NULL) {
/* Status and rc have been set by nfs3_FhandleToCache */
goto out;
}
nfs_SetPreOpAttr(parent_entry, &pre_parent);
target_entry = nfs3_FhandleToCache(&arg->arg_link3.file,
&res->res_link3.status,
&rc);
if (target_entry == NULL) {
/* Status and rc have been set by nfs3_FhandleToCache */
goto out;
}
/* Sanity checks: */
if (parent_entry->type != DIRECTORY) {
res->res_link3.status = NFS3ERR_NOTDIR;
rc = NFS_REQ_OK;
goto out;
}
if (link_name == NULL || *link_name == '\0')
res->res_link3.status = NFS3ERR_INVAL;
else {
/* Both objects have to be in the same filesystem */
if (to_exportid != from_exportid)
res->res_link3.status = NFS3ERR_XDEV;
else {
cache_status = cache_inode_link(target_entry,
parent_entry,
link_name);
if (cache_status == CACHE_INODE_SUCCESS) {
nfs_SetPostOpAttr(target_entry,
&(res->res_link3.LINK3res_u.
resok.file_attributes));
nfs_SetWccData(&pre_parent,
parent_entry,
&(res->res_link3.LINK3res_u.
resok.linkdir_wcc));
res->res_link3.status = NFS3_OK;
rc = NFS_REQ_OK;
goto out;
}
} /* else */
}
/* If we are here, there was an error */
if (nfs_RetryableError(cache_status)) {
rc = NFS_REQ_DROP;
goto out;
}
res->res_link3.status = nfs3_Errno(cache_status);
nfs_SetPostOpAttr(target_entry,
&(res->res_link3.LINK3res_u.resfail.file_attributes));
nfs_SetWccData(&pre_parent, parent_entry,
&res->res_link3.LINK3res_u.resfail.linkdir_wcc);
rc = NFS_REQ_OK;
out:
/* return references */
if (target_entry)
cache_inode_put(target_entry);
if (parent_entry)
cache_inode_put(parent_entry);
return rc;
} /* nfs3_link */
/**
* @brief Free the result structure allocated for nfs3_link
*
* This function frees the result structure allocated for nfs3_link.
*
* @param[in,out] resp Result structure
*
*/
void nfs3_link_free(nfs_res_t *resp)
{
return;
}
int main(int argc, char *argv[])
{
int c;
int exportid = 0;
char buffer[CMD_BUFFER_SIZE];
char str[2 * CMD_BUFFER_SIZE];
fhandle2 filehandle_v2;
struct nfs_fh3 filehandle_v3;
nfs_fh4 filehandle_v4;
int flag_i = FALSE;
char exec_name[MAXPATHLEN];
char *tempo_exec_name = NULL;
cache_inode_fsal_data_t fsal_data;
fsal_op_context_t fsal_op_context;
fsal_export_context_t fsal_export_context;
exportlist_t *pexportlist = NULL;
exportlist_t *pexport = NULL;
nfs_start_info_t nfs_start_info;
fsal_status_t fsal_status;
unsigned int nfs_version = 3;
path_str_t fsal_path_lib[NB_AVAILABLE_FSAL];
#ifdef _USE_SHARED_FSAL
int lentab = NB_AVAILABLE_FSAL ;
#endif
short cache_content_hash;
char entry_path[MAXPATHLEN];
int i, nb_char;
fsal_path_t export_path = FSAL_PATH_INITIALIZER;
unsigned int cookie;
fsal_xattrent_t xattr_array[256];
unsigned int nb_returned;
int eol;
char attr_buffer[4096];
size_t sz_returned;
fsal_u64_t objid;
char options[] = "h@f:v:i:";
char usage[] = "%s [-h][-f <cfg_path>] {-v 2|3|4 <NFS_FileHandle> | -i <inum>}\n"
" -h : prints this help\n"
" -f <config_file> : sets the ganesha configuration file to be used\n"
" -v <nfs_version> : sets the NFS version the file handle passed as argument\n"
" -i <inum> : get datacache path for the given inode number (decimal)\n";
ServerBootTime = time(NULL);
SetDefaultLogging("STDERR");
/* What is the executable file's name */
if((tempo_exec_name = strrchr(argv[0], '/')) != NULL)
strcpy((char *)exec_name, tempo_exec_name + 1);
strncpy(config_path, DEFAULT_CONFIG_FILE, MAXPATHLEN);
/* now parsing options with getopt */
while((c = getopt(argc, argv, options)) != EOF)
{
switch (c)
{
case '@':
printf("%s compiled on %s at %s\n", exec_name, __DATE__, __TIME__);
exit(0);
break;
case 'h':
printf(usage, exec_name);
exit(0);
break;
case 'f':
strncpy(config_path, optarg, MAXPATHLEN);
break;
case 'i':
if(sscanf(optarg, "%llu", &objid) != 1)
{
fprintf(stderr, "Invalid object_id %s (base-10 integer expected)\n",
optarg);
exit(1);
}
flag_i = TRUE;
break;
case 'v':
nfs_version = atoi(optarg);
if((nfs_version < 2) || (nfs_version > 4))
{
fprintf(stderr, "Invalid nfs version %u\n", nfs_version);
exit(1);
}
break;
case '?':
printf("Unknown option: %c\n", optopt);
printf(usage, exec_name);
exit(1);
}
}
if(!flag_i && (optind != argc - 1))
{
printf("Missing argument: <NFS_FileHandle>\n");
printf(usage, exec_name);
exit(1);
}
/* initialize memory and logging */
nfs_prereq_init("convert_fh", "localhost", NIV_MAJ, "/dev/tty");
#ifdef _USE_SHARED_FSAL
if(nfs_get_fsalpathlib_conf(config_path, fsal_path_lib, &lentab))
{
fprintf(stderr, "NFS MAIN: Error parsing configuration file.");
exit(1);
}
#endif /* _USE_SHARED_FSAL */
/* Load the FSAL library (if needed) */
if(!FSAL_LoadLibrary((char *)fsal_path_lib)) /** @todo: this part of the code and this utility has to be checked */
{
fprintf(stderr, "NFS MAIN: Could not load FSAL dynamic library %s", (char *)fsal_path_lib[0]);
exit(1);
}
/* Get the FSAL functions */
FSAL_LoadFunctions();
/* Get the FSAL consts */
FSAL_LoadConsts();
/* initialize default parameters */
nfs_set_param_default();
/* parse configuration file */
if(nfs_set_param_from_conf(&nfs_start_info))
{
fprintf(stderr, "Error parsing configuration file '%s'", config_path);
exit(1);
}
/* check parameters consitency */
if(nfs_check_param_consistency())
{
fprintf(stderr, "Inconsistent parameters found");
exit(1);
}
if(!nfs_param.pexportlist)
{
fprintf(stderr, "No export entries found in configuration file !!!\n");
return -1;
}
pexportlist = nfs_param.pexportlist;
/* not initialization is needed for converting fileid to path in datacache */
if(!flag_i)
{
#ifdef _USE_SHARED_FSAL
fsal_status = FSAL_Init(&nfs_param.fsal_param[0]);
#else
fsal_status = FSAL_Init(&nfs_param.fsal_param);
#endif
if(FSAL_IS_ERROR(fsal_status))
{
/* Failed init */
fprintf(stderr, "FSAL library could not be initialized, major=%d minor=%d\n",
fsal_status.major, fsal_status.minor);
exit(1);
}
strncpy(str, argv[optind], 2 * CMD_BUFFER_SIZE);
switch (nfs_version)
{
case 2:
if(sscanmem(filehandle_v2, sizeof(file_handle_v2_t), (char *)str) == -1)
{
fprintf(stderr, "Bad FH as input (expected size: %lu bytes)\n",
(unsigned long)sizeof(file_handle_v2_t));
exit(1);
}
exportid = nfs2_FhandleToExportId(&filehandle_v2);
break;
case 3:
if(sscanmem(buffer, sizeof(file_handle_v3_t), (char *)str) == -1)
{
fprintf(stderr, "Bad FH as input (expected size: %lu bytes)\n",
(unsigned long)sizeof(file_handle_v3_t));
exit(1);
}
filehandle_v3.data.data_val = (char *)buffer;
filehandle_v3.data.data_len = sizeof(file_handle_v3_t);
exportid = nfs3_FhandleToExportId(&filehandle_v3);
break;
case 4:
if(sscanmem(buffer, sizeof(file_handle_v4_t), (char *)str) == -1)
{
fprintf(stderr, "Bad FH as input (expected size: %lu bytes)\n",
(unsigned long)sizeof(file_handle_v4_t));
exit(1);
}
filehandle_v4.nfs_fh4_val = (char *)buffer;
filehandle_v4.nfs_fh4_len = sizeof(file_handle_v4_t);
exportid = nfs4_FhandleToExportId(&filehandle_v4);
break;
}
if((pexport = nfs_Get_export_by_id(pexportlist, exportid)) == NULL)
{
fprintf(stderr, "NFS FH has exportid %u which is invalid....\n", exportid);
exit(1);
}
/* INITIALIZING A CLIENT CONTEXT FOR FSAL */
FSAL_str2path(pexport->fullpath, MAXPATHLEN, &export_path);
if(FSAL_IS_ERROR
(fsal_status =
FSAL_BuildExportContext(&fsal_export_context, &export_path,
pexport->FS_specific)))
{
fprintf(stderr, "Error in FSAL_BuildExportContext, major=%u, minor=%u\n",
fsal_status.major, fsal_status.minor);
exit(1);
}
fsal_status = FSAL_InitClientContext(&fsal_op_context);
if(FSAL_IS_ERROR(fsal_status))
{
/* Failed init */
fprintf(stderr, "Could not init client context... major=%d minor=%d\n",
fsal_status.major, fsal_status.minor);
exit(1);
}
fsal_status = FSAL_GetClientContext(&fsal_op_context,
&fsal_export_context, 0, 0, NULL, 0);
if(FSAL_IS_ERROR(fsal_status))
{
/* Failed init */
fprintf(stderr, "Could not get cred for uid=%d gid=%d, major=%d minor=%d\n",
getuid(), getgid(), fsal_status.major, fsal_status.minor);
exit(1);
}
/* now, can use the fsal_op_context */
switch (nfs_version)
{
case 2:
if(!nfs2_FhandleToFSAL(&filehandle_v2, &fsal_data.handle, &fsal_op_context))
{
fprintf(stderr, "Cannot convert Fhandle to FSAL\n");
exit(1);
}
break;
case 3:
if(!nfs3_FhandleToFSAL(&filehandle_v3, &fsal_data.handle, &fsal_op_context))
{
fprintf(stderr, "Cannot convert Fhandle to FSAL\n");
exit(1);
}
break;
case 4:
if(!nfs4_FhandleToFSAL(&filehandle_v4, &fsal_data.handle, &fsal_op_context))
{
fprintf(stderr, "Cannot convert Fhandle to FSAL\n");
exit(1);
}
break;
}
printf("\n");
snprintmem((caddr_t) str, 2 * CMD_BUFFER_SIZE, (caddr_t) & fsal_data.handle,
sizeof(fsal_data.handle));
printf("%-18s = %s\n", "FSAL Handle", str);
/* Now, list FSAL extended attributes */
cookie = XATTRS_READLIST_FROM_BEGINNING;
eol = FALSE;
while(!eol)
{
unsigned int index;
fsal_status = FSAL_ListXAttrs(&fsal_data.handle, cookie, &fsal_op_context,
xattr_array, 256, &nb_returned, &eol);
if(FSAL_IS_ERROR(fsal_status))
{
fprintf(stderr, "Error executing FSAL_ListXAttrs\n");
exit(1);
}
/* list attributes and get their value */
for(index = 0; index < nb_returned; index++)
{
cookie = xattr_array[index].xattr_cookie;
printf("%-18s = ", xattr_array[index].xattr_name.name);
fsal_status =
FSAL_GetXAttrValueByName(&fsal_data.handle,
&xattr_array[index].xattr_name,
&fsal_op_context, attr_buffer, 4096,
&sz_returned);
if(FSAL_IS_ERROR(fsal_status))
{
fprintf(stderr, "Error executing FSAL_GetXAttrValueByName\n");
}
/* Display it */
print_buffer(attr_buffer, sz_returned);
}
}
/* get object ID */
fsal_status =
FSAL_DigestHandle(&fsal_export_context, FSAL_DIGEST_FILEID4, &fsal_data.handle,
(caddr_t) & objid);
if(FSAL_IS_ERROR(fsal_status))
{
fprintf(stderr, "Error retrieving fileid from handle\n");
}
else
{
printf("%-18s = %llu\n", "FileId", objid);
}
}
/* end of retrieval of objid */
/* build the path in the datacache */
cache_content_hash = HashFileID4(objid);
/* for limiting the number of entries into each datacache directory
* we create 256 subdirectories on 2 levels, depending on the entry's fileid.
*/
nb_char = snprintf(entry_path, MAXPATHLEN, "export_id=%d", 0);
for(i = 0; i <= 8; i += 8)
{
/* concatenation of hashval */
nb_char += snprintf((char *)(entry_path + nb_char), MAXPATHLEN - nb_char,
"/%02hhX", (char)((cache_content_hash >> i) & 0xFF));
}
/* displays the node name */
printf("%-18s = %s/%s/node=%llx*\n", "DataCache path",
nfs_param.cache_layers_param.cache_content_client_param.cache_dir, entry_path,
objid);
exit(0);
}
int nfs3_rename(nfs_arg_t *arg, struct svc_req *req, nfs_res_t *res)
{
const char *entry_name = arg->arg_rename3.from.name;
const char *new_entry_name = arg->arg_rename3.to.name;
cache_entry_t *parent_entry = NULL;
cache_entry_t *new_parent_entry = NULL;
cache_inode_status_t cache_status;
short to_exportid = 0;
short from_exportid = 0;
int rc = NFS_REQ_OK;
pre_op_attr pre_parent = {
.attributes_follow = false
};
pre_op_attr pre_new_parent = {
.attributes_follow = false
};
if (isDebug(COMPONENT_NFSPROTO)) {
char strto[LEN_FH_STR], strfrom[LEN_FH_STR];
nfs_FhandleToStr(req->rq_vers,
&arg->arg_rename3.from.dir,
NULL,
strfrom);
nfs_FhandleToStr(req->rq_vers,
&arg->arg_rename3.to.dir,
NULL,
strto);
LogDebug(COMPONENT_NFSPROTO,
"REQUEST PROCESSING: Calling nfs_Rename from handle: %s name %s to handle: %s name: %s",
strfrom, entry_name, strto, new_entry_name);
}
/* to avoid setting it on each error case */
res->res_rename3.RENAME3res_u.resfail.fromdir_wcc.before.
attributes_follow = FALSE;
res->res_rename3.RENAME3res_u.resfail.fromdir_wcc.after.
attributes_follow = FALSE;
res->res_rename3.RENAME3res_u.resfail.todir_wcc.before.
attributes_follow = FALSE;
res->res_rename3.RENAME3res_u.resfail.todir_wcc.after.
attributes_follow = FALSE;
/* Get the exportids for the two handles. */
to_exportid = nfs3_FhandleToExportId(&(arg->arg_rename3.to.dir));
from_exportid = nfs3_FhandleToExportId(&(arg->arg_rename3.from.dir));
/* Validate the to_exportid */
if (to_exportid < 0 || from_exportid < 0) {
LogInfo(COMPONENT_DISPATCH,
"NFS%d RENAME Request from client %s has badly formed handle for to dir",
req->rq_vers,
op_ctx->client
? op_ctx->client->hostaddr_str
: "unknown client");
/* Bad handle, report to client */
res->res_rename3.status = NFS3ERR_BADHANDLE;
goto out;
}
/* Both objects have to be in the same filesystem */
if (to_exportid != from_exportid) {
res->res_rename3.status = NFS3ERR_XDEV;
goto out;
}
/* Convert fromdir file handle into a cache_entry */
parent_entry = nfs3_FhandleToCache(&arg->arg_rename3.from.dir,
&res->res_create3.status,
&rc);
if (parent_entry == NULL) {
/* Status and rc have been set by nfs3_FhandleToCache */
goto out;
}
nfs_SetPreOpAttr(parent_entry, &pre_parent);
/* Convert todir file handle into a cache_entry */
new_parent_entry = nfs3_FhandleToCache(&arg->arg_rename3.to.dir,
&res->res_create3.status,
&rc);
if (new_parent_entry == NULL) {
/* Status and rc have been set by nfs3_FhandleToCache */
goto out;
}
nfs_SetPreOpAttr(new_parent_entry, &pre_new_parent);
if (entry_name == NULL || *entry_name == '\0' || new_entry_name == NULL
|| *new_entry_name == '\0') {
cache_status = CACHE_INODE_INVALID_ARGUMENT;
goto out_fail;
}
cache_status = cache_inode_rename(parent_entry,
entry_name,
new_parent_entry,
new_entry_name);
if (cache_status != CACHE_INODE_SUCCESS)
goto out_fail;
res->res_rename3.status = NFS3_OK;
nfs_SetWccData(&pre_parent, parent_entry,
&res->res_rename3.RENAME3res_u.resok.fromdir_wcc);
nfs_SetWccData(&pre_new_parent, new_parent_entry,
&res->res_rename3.RENAME3res_u.resok.todir_wcc);
rc = NFS_REQ_OK;
goto out;
out_fail:
res->res_rename3.status = nfs3_Errno(cache_status);
nfs_SetWccData(&pre_parent, parent_entry,
&res->res_rename3.RENAME3res_u.resfail.fromdir_wcc);
nfs_SetWccData(&pre_new_parent, new_parent_entry,
&res->res_rename3.RENAME3res_u.resfail.todir_wcc);
/* If we are here, there was an error */
if (nfs_RetryableError(cache_status))
rc = NFS_REQ_DROP;
out:
if (parent_entry)
cache_inode_put(parent_entry);
if (new_parent_entry)
cache_inode_put(new_parent_entry);
return rc;
}
/**
* @brief Free the result structure allocated for nfs3_rename.
*
* This function frees the result structure allocated for nfs3_rename.
*
* @param[in,out] res Result structure
*
*/
void nfs3_rename_free(nfs_res_t *res)
{
/* Nothing to do here */
}
