/**
* FSAL_mkdir:
* Create a directory.
*
* \param parent_directory_handle (input):
* Handle of the parent directory where
* the subdirectory is to be created.
* \param p_dirname (input):
* Pointer to the name of the directory to be created.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param accessmode (input):
* Mode for the directory to be created.
* (the umask defined into the FSAL configuration file
* will be applied on it).
* \param object_handle (output):
* Pointer to the handle of the created directory.
* \param object_attributes (optionnal input/output):
* The attributes of the created directory.
* As input, it defines the attributes that the caller
* wants to retrieve (by positioning flags into this structure)
* and the output is built considering this input
* (it fills the structure according to the flags it contains).
* May be NULL.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t GPFSFSAL_mkdir(fsal_handle_t * p_parent_directory_handle, /* IN */
fsal_name_t * p_dirname, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_accessmode_t accessmode, /* IN */
fsal_handle_t * p_object_handle, /* OUT */
fsal_attrib_list_t * p_object_attributes /* [ IN/OUT ] */
)
{
int rc, errsv;
int setgid_bit = 0;
mode_t unix_mode;
fsal_status_t status;
int fd, newfd;
fsal_accessflags_t access_mask = 0;
fsal_attrib_list_t parent_dir_attrs;
/* sanity checks.
* note : object_attributes is optional.
*/
if(!p_parent_directory_handle || !p_context || !p_object_handle || !p_dirname)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_mkdir);
/* convert FSAL mode to unix mode. */
unix_mode = fsal2unix_mode(accessmode);
/* Apply umask */
unix_mode = unix_mode & ~global_fs_info.umask;
TakeTokenFSCall();
status = fsal_internal_handle2fd(p_context, p_parent_directory_handle, &fd, O_RDONLY);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_mkdir);
/* get directory metadata */
parent_dir_attrs.asked_attributes = GPFS_SUPPORTED_ATTRIBUTES;
status = GPFSFSAL_getattrs(p_parent_directory_handle, p_context, &parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_create);
/* Check the user can write in the directory, and check the setgid bit on the directory */
if(fsal2unix_mode(parent_dir_attrs.mode) & S_ISGID)
setgid_bit = 1;
/* Set both mode and ace4 mask */
access_mask = FSAL_MODE_MASK_SET(FSAL_W_OK | FSAL_X_OK) |
FSAL_ACE4_MASK_SET(FSAL_ACE_PERM_ADD_SUBDIRECTORY);
status = fsal_internal_testAccess(p_context, access_mask, NULL, &parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_mkdir);
/* build new entry path */
/* creates the directory and get its handle */
TakeTokenFSCall();
rc = mkdirat(fd, p_dirname->name, unix_mode);
errsv = errno;
if(rc)
{
close(fd);
ReleaseTokenFSCall();
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mkdir);
}
ReleaseTokenFSCall();
/****
* There is a race here between mkdir creation and the open, not
* sure there is any way to close it in practice.
*/
/* get the new handle */
TakeTokenFSCall();
status = fsal_internal_get_handle_at(fd, p_dirname, p_object_handle);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
{
close(fd);
ReturnStatus(status, INDEX_FSAL_mkdir);
}
TakeTokenFSCall();
status =
fsal_internal_handle2fd_at(fd, p_object_handle, &newfd, O_RDONLY | O_DIRECTORY);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
{
close(fd);
ReturnStatus(status, INDEX_FSAL_mkdir);
}
/* the directory has been created */
/* chown the dir to the current user/group */
if(p_context->credential.user != geteuid())
{
TakeTokenFSCall();
/* if the setgid_bit was set on the parent directory, do not change the group of the created file, because it's already the parentdir's group */
rc = fchown(newfd, p_context->credential.user,
setgid_bit ? -1 : (int)p_context->credential.group);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
{
close(fd);
close(newfd);
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mkdir);
}
}
close(fd);
close(newfd);
/* retrieve file attributes */
if(p_object_attributes)
{
status = GPFSFSAL_getattrs(p_object_handle, p_context, p_object_attributes);
/* on error, we set a special bit in the mask. */
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
/* OK */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_mkdir);
}
/**
* FSAL_mknode:
* Create a special object in the filesystem.
* Not supported upon HPSS.
*
* \return ERR_FSAL_NOTSUPP.
*/
fsal_status_t GPFSFSAL_mknode(fsal_handle_t * parentdir_handle, /* IN */
fsal_name_t * p_node_name, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_accessmode_t accessmode, /* IN */
fsal_nodetype_t nodetype, /* IN */
fsal_dev_t * dev, /* IN */
fsal_handle_t * p_object_handle, /* OUT (handle to the created node) */
fsal_attrib_list_t * node_attributes /* [ IN/OUT ] */
)
{
int rc, errsv;
int setgid_bit = 0;
fsal_status_t status;
int fd, newfd;
mode_t unix_mode = 0;
dev_t unix_dev = 0;
fsal_accessflags_t access_mask = 0;
fsal_attrib_list_t parent_dir_attrs;
/* sanity checks.
* note : link_attributes is optional.
*/
if(!parentdir_handle || !p_context || !p_node_name)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_mknode);
unix_mode = fsal2unix_mode(accessmode);
/* Apply umask */
unix_mode = unix_mode & ~global_fs_info.umask;
switch (nodetype)
{
case FSAL_TYPE_BLK:
if(!dev)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_mknode);
unix_mode |= S_IFBLK;
unix_dev = (dev->major << 8) | (dev->minor & 0xFF);
break;
case FSAL_TYPE_CHR:
if(!dev)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_mknode);
unix_mode |= S_IFCHR;
unix_dev = (dev->major << 8) | (dev->minor & 0xFF);
break;
case FSAL_TYPE_SOCK:
unix_mode |= S_IFSOCK;
break;
case FSAL_TYPE_FIFO:
unix_mode |= S_IFIFO;
break;
default:
LogMajor(COMPONENT_FSAL,
"Invalid node type in FSAL_mknode: %d", nodetype);
Return(ERR_FSAL_INVAL, 0, INDEX_FSAL_mknode);
}
/* build the directory path */
status =
fsal_internal_handle2fd(p_context, parentdir_handle, &fd, O_RDONLY | O_DIRECTORY);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_mknode);
/* retrieve directory attributes */
parent_dir_attrs.asked_attributes = GPFS_SUPPORTED_ATTRIBUTES;
status = GPFSFSAL_getattrs(parentdir_handle, p_context, &parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_mknode);
/* Check the user can write in the directory, and check weither the setgid bit on the directory */
if(fsal2unix_mode(parent_dir_attrs.mode) & S_ISGID)
setgid_bit = 1;
/* Set both mode and ace4 mask */
access_mask = FSAL_MODE_MASK_SET(FSAL_W_OK | FSAL_X_OK) |
FSAL_ACE4_MASK_SET(FSAL_ACE_PERM_ADD_FILE);
status = fsal_internal_testAccess(p_context, access_mask, NULL, &parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_mknode);
/* creates the node, then stats it */
rc = mknodat(fd, p_node_name->name, unix_mode, unix_dev);
errsv = errno;
if(rc)
{
close(fd);
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mknode);
}
/* WARNING:
* After creating the new node, the node name could have been changed.
* This is a race condition. However only root creates new nodes. This
* is an unlikely race condition, but hopefully can be fixed someday.
*/
if(FSAL_IS_ERROR(status = fsal_internal_get_handle_at(fd, p_node_name,
p_object_handle)))
{
close(fd);
ReturnStatus(status, INDEX_FSAL_mknode);
}
if(FSAL_IS_ERROR(status = fsal_internal_handle2fd_at(fd,
p_object_handle, &newfd,
O_RDONLY | O_NOFOLLOW)))
{
close(fd);
ReturnStatus(status, INDEX_FSAL_mknode);
}
/* the node has been created */
/* chown the file to the current user/group */
if(p_context->credential.user != geteuid())
{
/* if the setgid_bit was set on the parent directory, do not change the group of the created file, because it's already the parentdir's group */
rc = fchown(newfd, p_context->credential.user,
setgid_bit ? -1 : (int)p_context->credential.group);
errsv = errno;
if(rc)
{
close(fd);
close(newfd);
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mknode);
}
}
close(fd);
close(newfd);
/* Fills the attributes if needed */
if(node_attributes)
{
status = GPFSFSAL_getattrs(p_object_handle, p_context, node_attributes);
/* on error, we set a special bit in the mask. */
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(node_attributes->asked_attributes);
FSAL_SET_MASK(node_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
/* Finished */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_mknode);
}
/**
* FSAL_lookup :
* Looks up for an object into a directory.
*
* Note : if parent handle and filename are NULL,
* this retrieves root's handle.
*
* \param parent_directory_handle (input)
* Handle of the parent directory to search the object in.
* \param filename (input)
* The name of the object to find.
* \param p_context (input)
* Authentication context for the operation (user,...).
* \param object_handle (output)
* The handle of the object corresponding to filename.
* \param object_attributes (optional input/output)
* Pointer to the attributes of the object we found.
* As input, it defines the attributes that the caller
* wants to retrieve (by positioning flags into this structure)
* and the output is built considering this input
* (it fills the structure according to the flags it contains).
* It can be NULL (increases performances).
*
* \return - ERR_FSAL_NO_ERROR, if no error.
* - Another error code else.
*
*/
fsal_status_t GPFSFSAL_lookup(fsal_handle_t * p_parent_directory_handle, /* IN */
fsal_name_t * p_filename, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_handle_t * object_handle, /* OUT */
fsal_attrib_list_t * p_object_attributes /* [ IN/OUT ] */
)
{
fsal_status_t status;
int parentfd;
fsal_accessflags_t access_mask = 0;
fsal_attrib_list_t parent_dir_attrs;
gpfsfsal_handle_t *p_object_handle = (gpfsfsal_handle_t *)object_handle;
/* sanity checks
* note : object_attributes is optional
* parent_directory_handle may be null for getting FS root.
*/
if(!p_object_handle || !p_context)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookup);
/* filename AND parent handle are NULL => lookup "/" */
if((p_parent_directory_handle && !p_filename)
|| (!p_parent_directory_handle && p_filename))
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookup);
/* get information about root */
if(!p_parent_directory_handle)
{
gpfsfsal_handle_t *root_handle = &((gpfsfsal_op_context_t *)p_context)->export_context->mount_root_handle;
/* get handle for the mount point */
memcpy(p_object_handle->data.handle.f_handle,
root_handle->data.handle.f_handle,
sizeof(root_handle->data.handle.handle_size));
p_object_handle->data.handle.handle_size = root_handle->data.handle.handle_size;
p_object_handle->data.handle.handle_key_size = root_handle->data.handle.handle_key_size;
/* get attributes, if asked */
if(p_object_attributes)
{
status = GPFSFSAL_getattrs(object_handle, p_context, p_object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
/* Done */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_lookup);
}
/* retrieve directory attributes */
TakeTokenFSCall();
status =
fsal_internal_handle2fd(p_context, p_parent_directory_handle, &parentfd, O_RDONLY);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_lookup);
/* get directory metadata */
parent_dir_attrs.asked_attributes = GPFS_SUPPORTED_ATTRIBUTES;
status = GPFSFSAL_getattrs(p_parent_directory_handle, p_context, &parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_lookup);
/* Be careful about junction crossing, symlinks, hardlinks,... */
switch (parent_dir_attrs.type)
{
case FSAL_TYPE_DIR:
// OK
break;
case FSAL_TYPE_JUNCTION:
// This is a junction
Return(ERR_FSAL_XDEV, 0, INDEX_FSAL_lookup);
case FSAL_TYPE_FILE:
case FSAL_TYPE_LNK:
case FSAL_TYPE_XATTR:
// not a directory
Return(ERR_FSAL_NOTDIR, 0, INDEX_FSAL_lookup);
default:
Return(ERR_FSAL_SERVERFAULT, 0, INDEX_FSAL_lookup);
}
// LogFullDebug(COMPONENT_FSAL,
// "lookup of %#llx:%#x:%#x/%s", p_parent_directory_handle->seq,
// p_parent_directory_handle->oid, p_parent_directory_handle->ver,
// p_filename->name);
/* check rights to enter into the directory */
/* Set both mode and ace4 mask */
access_mask = FSAL_MODE_MASK_SET(FSAL_R_OK | FSAL_X_OK) |
FSAL_ACE4_MASK_SET(FSAL_ACE_PERM_LIST_DIR);
if(!p_context->export_context->fe_static_fs_info->accesscheck_support)
status = fsal_internal_testAccess(p_context, access_mask, NULL, &parent_dir_attrs);
else
status = fsal_internal_access(p_context, p_parent_directory_handle, access_mask,
&parent_dir_attrs);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_lookup);
/* get file handle, it it exists */
/* This might be a race, but it's the best we can currently do */
status = fsal_internal_get_handle_at(parentfd, p_filename, object_handle);
close(parentfd);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_lookup);
/* get object attributes */
if(p_object_attributes)
{
status = GPFSFSAL_getattrs(object_handle, p_context, p_object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
/* lookup complete ! */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_lookup);
}
fsal_status_t VFSFSAL_readdir(vfsfsal_dir_t * p_dir_descriptor, /* IN */
vfsfsal_cookie_t start_position, /* IN */
fsal_attrib_mask_t get_attr_mask, /* IN */
fsal_mdsize_t buffersize, /* IN */
fsal_dirent_t * p_pdirent, /* OUT */
vfsfsal_cookie_t * p_end_position, /* OUT */
fsal_count_t * p_nb_entries, /* OUT */
fsal_boolean_t * p_end_of_dir /* OUT */
)
{
fsal_status_t st;
fsal_count_t max_dir_entries;
char buff[BUF_SIZE];
struct linux_dirent *dp = NULL;
int bpos = 0;
int tmpfd = 0;
char d_type;
struct stat buffstat;
int errsv = 0, rc = 0;
memset(buff, 0, BUF_SIZE);
/*****************/
/* sanity checks */
/*****************/
if(!p_dir_descriptor || !p_pdirent || !p_end_position || !p_nb_entries || !p_end_of_dir)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_readdir);
max_dir_entries = (buffersize / sizeof(fsal_dirent_t));
/***************************/
/* seek into the directory */
/***************************/
errno = 0;
if(start_position.data.cookie == 0)
{
//rewinddir(p_dir_descriptor->p_dir);
rc = errno;
}
else
{
//seekdir(p_dir_descriptor->p_dir, start_position.cookie);
rc = errno;
}
if(rc)
Return(posix2fsal_error(rc), rc, INDEX_FSAL_readdir);
/************************/
/* browse the directory */
/************************/
*p_nb_entries = 0;
while(*p_nb_entries < max_dir_entries)
{
/***********************/
/* read the next entry */
/***********************/
TakeTokenFSCall();
rc = syscall(SYS_getdents, p_dir_descriptor->fd, buff, BUF_SIZE);
ReleaseTokenFSCall();
if(rc < 0)
{
rc = errno;
Return(posix2fsal_error(rc), rc, INDEX_FSAL_readdir);
}
/* End of directory */
if(rc == 0)
{
*p_end_of_dir = 1;
break;
}
/***********************************/
/* Get information about the entry */
/***********************************/
for(bpos = 0; bpos < rc;)
{
dp = (struct linux_dirent *)(buff + bpos);
d_type = *(buff + bpos + dp->d_reclen - 1);
/** @todo not used for the moment. Waiting for information on symlink management */
bpos += dp->d_reclen;
/* LogFullDebug(COMPONENT_FSAL, "\tino=%8ld|%8lx off=%d|%x reclen=%d|%x name=%s|%d", dp->d_ino, dp->d_ino, (int)dp->d_off, (int)dp->d_off,
dp->d_reclen, dp->d_reclen, dp->d_name, (int)dp->d_name[0] ) ; */
if(!(*p_nb_entries < max_dir_entries))
break;
/* skip . and .. */
if(!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
/* build the full path of the file into "fsalpath */
if(FSAL_IS_ERROR
(st =
FSAL_str2name(dp->d_name, FSAL_MAX_NAME_LEN,
&(p_pdirent[*p_nb_entries].name))))
ReturnStatus(st, INDEX_FSAL_readdir);
d_type = DT_UNKNOWN;
if((tmpfd =
openat(p_dir_descriptor->fd, dp->d_name, O_RDONLY | O_NOFOLLOW, 0600)) < 0)
{
if(errno != ELOOP) /* ( p_dir_descriptor->fd, dp->d_name) is not a symlink */
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_readdir);
else
d_type = DT_LNK;
}
/* get object handle */
TakeTokenFSCall();
if(d_type != DT_LNK)
{
vfsfsal_handle_t *tmp_handle =
(vfsfsal_handle_t *) (&(p_pdirent[*p_nb_entries].handle));
st = fsal_internal_fd2handle(&p_dir_descriptor->context, tmpfd, tmp_handle);
close(tmpfd);
}
else
{
vfsfsal_handle_t *tmp_handle =
(vfsfsal_handle_t *) (&(p_pdirent[*p_nb_entries].handle));
if(fstatat(p_dir_descriptor->fd, dp->d_name, &buffstat, AT_SYMLINK_NOFOLLOW)
< 0)
{
ReleaseTokenFSCall();
Return(posix2fsal_error(errno), errno, INDEX_FSAL_readdir);
}
st = fsal_internal_get_handle_at( p_dir_descriptor->fd, dp->d_name, tmp_handle ) ;
if(FSAL_IS_ERROR(st))
{
ReleaseTokenFSCall();
ReturnStatus(st, INDEX_FSAL_readdir);
}
p_pdirent[*p_nb_entries].attributes.asked_attributes = get_attr_mask;
st = posix2fsal_attributes(&buffstat, &p_pdirent[*p_nb_entries].attributes);
if(FSAL_IS_ERROR(st))
{
ReleaseTokenFSCall();
FSAL_CLEAR_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes);
FSAL_SET_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes,
FSAL_ATTR_RDATTR_ERR);
ReturnStatus(st, INDEX_FSAL_getattrs);
}
}
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(st))
ReturnStatus(st, INDEX_FSAL_readdir);
/************************
* Fills the attributes *
************************/
if(d_type != DT_LNK)
{
p_pdirent[*p_nb_entries].attributes.asked_attributes = get_attr_mask;
st = VFSFSAL_getattrs((vfsfsal_handle_t
*) (&(p_pdirent[*p_nb_entries].handle)),
(vfsfsal_op_context_t *) & p_dir_descriptor->context,
&p_pdirent[*p_nb_entries].attributes);
if(FSAL_IS_ERROR(st))
{
FSAL_CLEAR_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes);
FSAL_SET_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes,
FSAL_ATTR_RDATTR_ERR);
}
}
//p_pdirent[*p_nb_entries].cookie.cookie = dp->d_off;
((vfsfsal_cookie_t *) (&p_pdirent[*p_nb_entries].cookie))->data.cookie = dp->d_off;
p_pdirent[*p_nb_entries].nextentry = NULL;
if(*p_nb_entries)
p_pdirent[*p_nb_entries - 1].nextentry = &(p_pdirent[*p_nb_entries]);
//(*p_end_position) = p_pdirent[*p_nb_entries].cookie;
memcpy((char *)p_end_position, (char *)&p_pdirent[*p_nb_entries].cookie,
sizeof(vfsfsal_cookie_t));
(*p_nb_entries)++;
} /* for */
} /* While */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_readdir);
}
int main() {
fsal_path_t path;
int rc,fd,status, i, memsz, mempos, memval;
fsal_op_context_t op_context;
struct statfs stat_buf;
gpfsfsal_export_context_t *p_export_context = calloc(0, sizeof(gpfsfsal_export_context_t));
fsal_handle_t object_handle;
fsal_handle_t object_handle_garbled;
gpfsfsal_xstat_t buffstat;
fsal_name_t file_name;
unsigned char *handle_ptr;
char *TESTDIR = "/ibm/gpfs0";
char *TESTFILE = "invalid_getattrs_example";
char *TESTFILE_PATH = "/ibm/gpfs0/invalid_getattrs_example";
char *CREATETESTFILE = "mknod /ibm/gpfs0/invalid_getattrs_example u 1 1";
char *REMOVETESTFILE = "ssh int001st001 rm -rf /ibm/gpfs0/invalid_getattrs_example";
printf("Creating test file: %s\n", TESTFILE);
system(CREATETESTFILE);
strcpy(path.path, TESTDIR);
path.len = strlen(TESTDIR);
strcpy(file_name.name, TESTFILE);
file_name.len = strlen(TESTFILE);
fd = open(path.path, O_RDONLY | O_DIRECTORY);
if(fd < 0) {
printf("Couldn't open directory.\n");
return 0;
}
p_export_context->mount_root_fd = fd;
rc = statfs(path.path, &stat_buf);
if(rc) {
printf ("statfs call failed on file %s: %d", path.path, rc);
return 0;
}
p_export_context->fsid[0] = stat_buf.f_fsid.__val[0];
p_export_context->fsid[1] = stat_buf.f_fsid.__val[1];
/* Get file handle to root of GPFS share */
op_context.export_context = p_export_context;
status = fsal_internal_get_handle(&op_context,
&path,
(fsal_handle_t *)(&(p_export_context->mount_root_handle)));
if (status)
printf("fsal_internal_get_handle() failed\n");
/* Now show the error for when we use a nonsense file handle. */
/* printf("USING AN UNINITIALIZED FILE HANDLE FOR GETATTR ...\n");
fsal_get_xstat_by_handle(&op_context, &object_handle, &buffstat);
printf("\n");
*/
/* Get handle of file */
fsal_internal_get_handle_at(fd, &file_name, &object_handle);
/* Getattrs of file */
printf("USING A CORRECT FILE HANDLE FOR GETATTR ...\n");
handle_ptr = ((gpfsfsal_handle_t *)&object_handle)->data.handle.f_handle;
printf("handle: ");
for(i=0; i < OPENHANDLE_HANDLE_LEN; i++)
printf("%02x", (unsigned char)handle_ptr[i]);
printf("\n");
fsal_get_xstat_by_handle(&op_context, &object_handle, &buffstat);
/* print attrs */
print_attrs(&buffstat);
printf("\n");
/* Getattrs of file */
/*
printf("USING A FILE HANDLE THAT HAS BEEN MEMSET at 4th BYTE FOR GETATTR ...\n");
memcpy(&object_handle_garbled, &object_handle, sizeof(fsal_handle_t));
handle_ptr = ((gpfsfsal_handle_t *)&object_handle_garbled)->data.handle.f_handle;
memset(handle_ptr+3, 4, 1);
printf("handle: ");
for(i=0; i < OPENHANDLE_HANDLE_LEN; i++)
printf("%02x", (unsigned char)handle_ptr[i]);
printf("\n");
fsal_get_xstat_by_handle(&op_context, &object_handle_garbled, &buffstat);
printf("\n");
*/
/* Getattrs of file */
/*
printf("USING A FILE HANDLE THAT HAS BEEN MEMSET at 2nd BYTE FOR GETATTR ...\n");
memcpy(&object_handle_garbled, &object_handle, sizeof(fsal_handle_t));
handle_ptr = ((gpfsfsal_handle_t *)&object_handle_garbled)->data.handle.f_handle;
memset(handle_ptr+1, 4, 1);
printf("handle: ");
for(i=0; i < OPENHANDLE_HANDLE_LEN; i++)
printf("%02x", (unsigned char)handle_ptr[i]);
printf("\n");
fsal_get_xstat_by_handle(&op_context, &object_handle_garbled, &buffstat);
printf("\n");
*/
/* Getattrs of file */
/*
printf("USING FILE HANDLEs THAT HAVE BEEN MEMSET\n");
for(memsz=0; memsz <= OPENHANDLE_HANDLE_LEN; memsz++) {
for(mempos=0; mempos <= OPENHANDLE_HANDLE_LEN-memsz; mempos++) {
for(memval=0; memval <= 255; memval++) {
memcpy(&object_handle_garbled, &object_handle, sizeof(fsal_handle_t));
handle_ptr = ((gpfsfsal_handle_t *)&object_handle_garbled)->data.handle.f_handle;
memset(handle_ptr+mempos, memval, memsz);
printf("handle: ");
for(i=0; i < OPENHANDLE_HANDLE_LEN; i++)
printf("%02x", (unsigned char)handle_ptr[i]);
printf("\n");
fsal_get_xstat_by_handle(&op_context, &object_handle_garbled, &buffstat);
}
}
}
*/
/* delete file */
printf("Removing test file: %s\n", TESTFILE);
system(REMOVETESTFILE);
/* Now show the INTERRUPT error. */
printf("USING A FILE HANDLE FROM A DELETED FILE FOR GETATTR ...\n");
fsal_get_xstat_by_handle(&op_context, &object_handle, &buffstat);
printf("\n");
close(fd);
return 0;
}
fsal_status_t VFSFSAL_readdir(fsal_dir_t * dir_descriptor, /* IN */
fsal_cookie_t startposition, /* IN */
fsal_attrib_mask_t get_attr_mask, /* IN */
fsal_mdsize_t buffersize, /* IN */
fsal_dirent_t * p_pdirent, /* OUT */
fsal_cookie_t * end_position, /* OUT */
fsal_count_t * p_nb_entries, /* OUT */
fsal_boolean_t * p_end_of_dir /* OUT */
)
{
vfsfsal_dir_t * p_dir_descriptor = (vfsfsal_dir_t * ) dir_descriptor;
vfsfsal_cookie_t start_position;
vfsfsal_cookie_t * p_end_position = (vfsfsal_cookie_t *) end_position;
fsal_status_t st;
fsal_count_t max_dir_entries;
fsal_name_t entry_name;
char buff[BUF_SIZE];
struct linux_dirent *dp = NULL;
int bpos = 0;
struct stat buffstat;
int rc = 0;
memset(buff, 0, BUF_SIZE);
memset(&entry_name, 0, sizeof(fsal_name_t));
/*****************/
/* sanity checks */
/*****************/
if(!p_dir_descriptor || !p_pdirent || !p_end_position || !p_nb_entries || !p_end_of_dir)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_readdir);
max_dir_entries = (buffersize / sizeof(fsal_dirent_t));
/***************************/
/* seek into the directory */
/***************************/
start_position.data.cookie = *((off_t*) &startposition.data);
rc = errno = 0;
lseek(p_dir_descriptor->fd, start_position.data.cookie, SEEK_SET);
rc = errno;
if(rc)
Return(posix2fsal_error(rc), rc, INDEX_FSAL_readdir);
/************************/
/* browse the directory */
/************************/
*p_nb_entries = 0;
while(*p_nb_entries < max_dir_entries)
{
/***********************/
/* read the next entry */
/***********************/
TakeTokenFSCall();
rc = syscall(SYS_getdents, p_dir_descriptor->fd, buff, BUF_SIZE);
ReleaseTokenFSCall();
if(rc < 0)
{
rc = errno;
Return(posix2fsal_error(rc), rc, INDEX_FSAL_readdir);
}
/* End of directory */
if(rc == 0)
{
*p_end_of_dir = 1;
break;
}
/***********************************/
/* Get information about the entry */
/***********************************/
for(bpos = 0; bpos < rc;)
{
dp = (struct linux_dirent *)(buff + bpos);
bpos += dp->d_reclen;
if(!(*p_nb_entries < max_dir_entries))
break;
/* skip . and .. */
if(!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
/* build the full path of the file into "fsalpath */
if(FSAL_IS_ERROR
(st =
FSAL_str2name(dp->d_name, FSAL_MAX_NAME_LEN,
&(p_pdirent[*p_nb_entries].name))))
ReturnStatus(st, INDEX_FSAL_readdir);
// TODO: there is a race here, because between handle fetch
// and open at things might change. we need to figure out if there
// is another way to open without the pcontext
strncpy(entry_name.name, dp->d_name, sizeof(entry_name.name));
entry_name.len = strlen(entry_name.name);
/* get object handle */
TakeTokenFSCall();
if(fstatat(p_dir_descriptor->fd, dp->d_name, &buffstat, AT_SYMLINK_NOFOLLOW) < 0 )
{
ReleaseTokenFSCall();
Return(posix2fsal_error(errno), errno, INDEX_FSAL_readdir);
}
st = fsal_internal_get_handle_at( p_dir_descriptor->fd, dp->d_name,
&p_pdirent[*p_nb_entries].handle) ;
if(FSAL_IS_ERROR(st))
{
ReleaseTokenFSCall();
ReturnStatus(st, INDEX_FSAL_readdir);
}
p_pdirent[*p_nb_entries].attributes.asked_attributes = get_attr_mask;
st = posix2fsal_attributes(&buffstat, &p_pdirent[*p_nb_entries].attributes);
if(FSAL_IS_ERROR(st))
{
ReleaseTokenFSCall();
FSAL_CLEAR_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes);
FSAL_SET_MASK(p_pdirent[*p_nb_entries].attributes.asked_attributes,
FSAL_ATTR_RDATTR_ERR);
ReturnStatus(st, INDEX_FSAL_getattrs);
}
ReleaseTokenFSCall();
//p_pdirent[*p_nb_entries].cookie.cookie = dp->d_off;
((vfsfsal_cookie_t *) (&p_pdirent[*p_nb_entries].cookie))->data.cookie = dp->d_off;
p_pdirent[*p_nb_entries].nextentry = NULL;
if(*p_nb_entries)
p_pdirent[*p_nb_entries - 1].nextentry = &(p_pdirent[*p_nb_entries]);
//(*p_end_position) = p_pdirent[*p_nb_entries].cookie;
memcpy((char *)p_end_position, (char *)&p_pdirent[*p_nb_entries].cookie,
sizeof(vfsfsal_cookie_t));
(*p_nb_entries)++;
} /* for */
} /* While */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_readdir);
}
/**
* @brief Create a symbolic link.
*
* @param dir_hdl Handle of the parent dir where the link is to be created.
* @param linkname Name of the link to be created.
* @param linkcontent Content of the link to be created.
* @param op_ctx Authentication context for the operation (user,...).
* @param accessmode Mode of the link to be created.
* It has no sense in POSIX filesystems.
* @param gpfs_fh Pointer to the handle of the created symlink.
* @param link_attr Attributes of the newly created symlink.
* As input, it defines the attributes that the caller
* wants to retrieve (by positioning flags into this structure)
* and the output is built considering this input
* (it fills the structure according to the flags it contains).
* May be NULL.
*
* @return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t
GPFSFSAL_symlink(struct fsal_obj_handle *dir_hdl, const char *linkname,
const char *linkcontent, const struct req_op_context *op_ctx,
uint32_t accessmode, struct gpfs_file_handle *gpfs_fh,
struct attrlist *link_attr)
{
int rc, errsv;
fsal_status_t status;
int fd;
struct gpfs_fsal_obj_handle *gpfs_hdl;
struct gpfs_filesystem *gpfs_fs;
/* note : link_attr is optional. */
if (!dir_hdl || !op_ctx || !gpfs_fh || !linkname
|| !linkcontent)
return fsalstat(ERR_FSAL_FAULT, 0);
gpfs_hdl =
container_of(dir_hdl, struct gpfs_fsal_obj_handle, obj_handle);
gpfs_fs = dir_hdl->fs->private_data;
/* Tests if symlinking is allowed by configuration. */
if (!op_ctx->fsal_export->exp_ops.
fs_supports(op_ctx->fsal_export,
fso_symlink_support))
return fsalstat(ERR_FSAL_NOTSUPP, 0);
status = fsal_internal_handle2fd(gpfs_fs->root_fd, gpfs_hdl->handle,
&fd, O_RDONLY | O_DIRECTORY, 0);
if (FSAL_IS_ERROR(status))
return status;
/* build symlink path */
/* create the symlink on the filesystem using the credentials
* for proper ownership assignment.
*/
fsal_set_credentials(op_ctx->creds);
rc = symlinkat(linkcontent, fd, linkname);
errsv = errno;
fsal_restore_ganesha_credentials();
if (rc) {
close(fd);
return fsalstat(posix2fsal_error(errsv), errsv);
}
/* now get the associated handle, while there is a race, there is
also a race lower down */
status = fsal_internal_get_handle_at(fd, linkname, gpfs_fh);
if (FSAL_IS_ERROR(status)) {
close(fd);
return status;
}
/* get attributes */
status = GPFSFSAL_getattrs(op_ctx->fsal_export, gpfs_fs,
op_ctx, gpfs_fh,
link_attr);
if (!FSAL_IS_ERROR(status) && link_attr->type != SYMBOLIC_LINK) {
/* We could wind up not failing the creation of the symlink
* and the only way we know is that the object type isn't
* a symlink.
*/
fsal_release_attrs(link_attr);
status = fsalstat(ERR_FSAL_EXIST, 0);
}
close(fd);
return status;
}
