/**
* FSAL_link:
* Create a hardlink.
*
* \param exttarget (input):
* Handle of the target object.
* \param extdir (input):
* Pointer to the directory handle where
* the hardlink is to be created.
* \param link_name (input):
* Pointer to the name of the hardlink to be created.
* \param extcontext (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 attributes (optionnal input/output):
* The post_operation attributes of the linked object.
* 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)
* - ERR_FSAL_STALE (target or dir does not address an existing object)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Other error codes can be returned :
* ERR_FSAL_ACCESS, ERR_FSAL_EXIST, ERR_FSAL_IO, ...
*
* NB: if getting postop attributes failed,
* the function does not return an error
* but the FSAL_ATTR_RDATTR_ERR bit is set in
* the attributes->asked_attributes field.
*/
fsal_status_t CEPHFSAL_link(fsal_handle_t * exttarget,
fsal_handle_t * extdir,
fsal_name_t * link_name,
fsal_op_context_t * extcontext,
fsal_attrib_list_t * attributes)
{
int rc;
struct stat st;
char strname[FSAL_MAX_NAME_LEN];
cephfsal_handle_t* target = (cephfsal_handle_t*) exttarget;
cephfsal_handle_t* dir = (cephfsal_handle_t*) extdir;
cephfsal_op_context_t* context = (cephfsal_op_context_t*) context;
struct ceph_mount_info *cmount = context->export_context->cmount;
int uid = FSAL_OP_CONTEXT_TO_UID(context);
int gid = FSAL_OP_CONTEXT_TO_GID(context);
/* sanity checks.
* note : attributes is optional.
*/
if(!target || !dir || !context || !link_name)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_link);
memset(target, 0, sizeof(cephfsal_handle_t));
/* Tests if hardlinking is allowed by configuration. */
if(!global_fs_info.link_support)
Return(ERR_FSAL_NOTSUPP, 0, INDEX_FSAL_link);
FSAL_name2str(link_name, strname, FSAL_MAX_NAME_LEN);
TakeTokenFSCall();
rc = ceph_ll_link(cmount, VINODE(target), VINODE(dir), strname, &st,
uid, gid);
ReleaseTokenFSCall();
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_link);
if(attributes)
{
fsal_status_t status;
status = posix2fsal_attributes(&st, attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(attributes->asked_attributes);
FSAL_SET_MASK(attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_link);
}
}
/* OK */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_link);
}
/*
* Common code used by fsal_lookup and fsal_readdir -
* given the name try to stat an entry. If an entry is
* regular file or directory then open it and use fd2handle
* to get a real handle, otherwise use inum2handle to fake
* a handle.
*/
fsal_status_t
xfsfsal_stat_by_name(fsal_op_context_t * context,
int atfd,
const char *name,
fsal_handle_t *handle,
fsal_attrib_list_t * attributes)
{
int rc;
int errsv;
struct stat buffstat;
fsal_status_t st;
TakeTokenFSCall();
rc = fstatat(atfd, name, &buffstat, AT_SYMLINK_NOFOLLOW);
errsv = errno;
ReleaseTokenFSCall();
if(rc < 0)
ReturnCode(posix2fsal_error(errsv), errsv);
if(S_ISDIR(buffstat.st_mode) || S_ISREG(buffstat.st_mode))
{
int tmpfd;
TakeTokenFSCall();
tmpfd = openat(atfd, name, O_RDONLY | O_NOFOLLOW, 0600);
errsv = errno;
ReleaseTokenFSCall();
if(tmpfd < 0)
ReturnCode(posix2fsal_error(errsv), errsv);
st = fsal_internal_fd2handle(context, tmpfd, handle);
close(tmpfd);
}
else
{
st = fsal_internal_inum2handle(context, buffstat.st_ino, handle);
}
if(FSAL_IS_ERROR(st))
return st;
if(attributes)
{
st = posix2fsal_attributes(&buffstat, attributes);
if(FSAL_IS_ERROR(st))
{
FSAL_CLEAR_MASK(attributes->asked_attributes);
FSAL_SET_MASK(attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
return st;
}
/**
* FSAL_getattrs:
* Get attributes for the object specified by its filehandle.
*
* \param filehandle (input):
* The handle of the object to get parameters.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param object_attributes (mandatory input/output):
* The retrieved attributes for the object.
* 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).
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t XFSFSAL_getattrs(fsal_handle_t * p_filehandle, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_attrib_list_t * p_object_attributes /* IN/OUT */
)
{
int rc, errsv;
fsal_status_t st;
int fd;
struct stat buffstat;
/* sanity checks.
* note : object_attributes is mandatory in FSAL_getattrs.
*/
if(!p_filehandle || !p_context || !p_object_attributes)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_getattrs);
TakeTokenFSCall();
st = fsal_internal_handle2fd(p_context, p_filehandle, &fd, O_RDONLY);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(st))
ReturnStatus(st, INDEX_FSAL_getattrs);
/* get file metadata */
TakeTokenFSCall();
rc = fstat(fd, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
close(fd);
if(rc != 0)
{
if(errsv == ENOENT)
Return(ERR_FSAL_STALE, errsv, INDEX_FSAL_getattrs);
else
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_getattrs);
}
/* convert attributes */
st = posix2fsal_attributes(&buffstat, p_object_attributes);
if(FSAL_IS_ERROR(st))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
ReturnStatus(st, INDEX_FSAL_getattrs);
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
/**
* FSAL_getattrs:
* Get attributes for the object specified by its filehandle.
*
* \param filehandle (input):
* The handle of the object to get parameters.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param object_attributes (mandatory input/output):
* The retrieved attributes for the object.
* 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).
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t LUSTREFSAL_getattrs(fsal_handle_t * p_filehandle, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_attrib_list_t * p_object_attributes /* IN/OUT */
)
{
int rc;
fsal_status_t st;
fsal_path_t fsalpath;
struct stat buffstat;
/* sanity checks.
* note : object_attributes is mandatory in FSAL_getattrs.
*/
if(!p_filehandle || !p_context || !p_object_attributes)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_getattrs);
/* get the path of the file */
st = fsal_internal_Handle2FidPath(p_context, p_filehandle, &fsalpath);
if(FSAL_IS_ERROR(st))
ReturnStatus(st, INDEX_FSAL_getattrs);
/* get file metadata */
TakeTokenFSCall();
rc = lstat(fsalpath.path, &buffstat);
ReleaseTokenFSCall();
if(rc != 0)
{
rc = errno;
if(rc == ENOENT)
Return(ERR_FSAL_STALE, rc, INDEX_FSAL_getattrs);
else
Return(posix2fsal_error(rc), rc, INDEX_FSAL_getattrs);
}
/* convert attributes */
st = posix2fsal_attributes(&buffstat, p_object_attributes);
if(FSAL_IS_ERROR(st))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
ReturnStatus(st, INDEX_FSAL_getattrs);
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
/**
* FSAL_getattrs:
* Get attributes for the object specified by its filehandle.
*
* \param filehandle (input):
* The handle of the object to get parameters.
* \param context (input):
* Authentication context for the operation (user, export...).
* \param object_attributes (mandatory input/output):
* The retrieved attributes for the object.
* 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).
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - ERR_FSAL_STALE (object_handle does not address an existing object)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Another error code if an error occured.
*/
fsal_status_t CEPHFSAL_getattrs(fsal_handle_t * exthandle,
fsal_op_context_t * extcontext,
fsal_attrib_list_t * object_attributes)
{
int rc;
struct stat st;
fsal_status_t status;
cephfsal_handle_t* filehandle = (cephfsal_handle_t*) exthandle;
cephfsal_op_context_t* context = (cephfsal_op_context_t*) extcontext;
int uid = FSAL_OP_CONTEXT_TO_UID(context);
int gid = FSAL_OP_CONTEXT_TO_GID(context);
/* sanity checks.
* note : object_attributes is mandatory in FSAL_getattrs.
*/
if(!filehandle || !context || !object_attributes)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_getattrs);
TakeTokenFSCall();
rc = ceph_ll_getattr(context->export_context->cmount, VINODE(filehandle),
&st, uid, gid);
ReleaseTokenFSCall();
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_getattrs);
/* convert attributes */
status = posix2fsal_attributes(&st, object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
/**
* VFSFSAL_getattrs:
* Get attributes for the object specified by its filehandle.
*
* \param filehandle (input):
* The handle of the object to get parameters.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param object_attributes (mandatory input/output):
* The retrieved attributes for the object.
* 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).
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t VFSFSAL_getattrs(fsal_handle_t * p_filehandle, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_attrib_list_t * p_object_attributes /* IN/OUT */
)
{
fsal_status_t st;
int rc = 0 ;
int errsv;
struct stat buffstat;
/* sanity checks.
* note : object_attributes is mandatory in VFSFSAL_getattrs.
*/
if(!p_filehandle || !p_context || !p_object_attributes)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_getattrs);
TakeTokenFSCall();
rc = vfs_stat_by_handle( ((vfsfsal_op_context_t *)p_context)->export_context->mount_root_fd,
&((vfsfsal_handle_t *)p_filehandle)->data.vfs_handle,
&buffstat ) ;
errsv = errno;
ReleaseTokenFSCall();
if( rc == -1 )
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_getattrs);
/* convert attributes */
st = posix2fsal_attributes(&buffstat, p_object_attributes);
if(FSAL_IS_ERROR(st))
{
FSAL_CLEAR_MASK(p_object_attributes->asked_attributes);
FSAL_SET_MASK(p_object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
ReturnStatus(st, INDEX_FSAL_getattrs);
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
/* alloc_handle
* allocate and fill in a handle
* this uses malloc/free for the time being.
*/
static struct lustre_fsal_obj_handle *alloc_handle(
struct lustre_file_handle *fh,
struct fsal_filesystem *fs,
struct stat *stat,
const char *link_content,
struct lustre_file_handle *dir_fh,
const char *sock_name,
struct fsal_export *exp_hdl)
{
struct lustre_fsal_obj_handle *hdl;
fsal_status_t st;
hdl =
gsh_malloc(sizeof(struct lustre_fsal_obj_handle) +
sizeof(struct lustre_file_handle));
if (hdl == NULL)
return NULL;
memset(hdl, 0,
(sizeof(struct lustre_fsal_obj_handle) +
sizeof(struct lustre_file_handle)));
hdl->handle = (struct lustre_file_handle *)&hdl[1];
memcpy(hdl->handle, fh, sizeof(struct lustre_file_handle));
hdl->obj_handle.type = posix2fsal_type(stat->st_mode);
hdl->dev = posix2fsal_devt(stat->st_dev);
hdl->obj_handle.fs = fs;
if (hdl->obj_handle.type == REGULAR_FILE) {
hdl->u.file.fd = -1; /* no open on this yet */
hdl->u.file.openflags = FSAL_O_CLOSED;
} else if (hdl->obj_handle.type == SYMBOLIC_LINK
&& link_content != NULL) {
size_t len = strlen(link_content) + 1;
hdl->u.symlink.link_content = gsh_malloc(len);
if (hdl->u.symlink.link_content == NULL)
goto spcerr;
memcpy(hdl->u.symlink.link_content, link_content, len);
hdl->u.symlink.link_size = len;
} else if (hdl->obj_handle.type == SOCKET_FILE && dir_fh != NULL
&& sock_name != NULL) {
hdl->u.sock.sock_dir =
gsh_malloc(sizeof(struct lustre_file_handle));
if (hdl->u.sock.sock_dir == NULL)
goto spcerr;
memcpy(hdl->u.sock.sock_dir, dir_fh,
sizeof(struct lustre_file_handle));
hdl->u.sock.sock_name = gsh_malloc(strlen(sock_name) + 1);
if (hdl->u.sock.sock_name == NULL)
goto spcerr;
strcpy(hdl->u.sock.sock_name, sock_name);
}
hdl->obj_handle.attributes.mask =
exp_hdl->ops->fs_supported_attrs(exp_hdl);
st = posix2fsal_attributes(stat, &hdl->obj_handle.attributes);
if (FSAL_IS_ERROR(st))
goto spcerr;
fsal_obj_handle_init(&hdl->obj_handle, exp_hdl,
posix2fsal_type(stat->st_mode));
return hdl;
spcerr:
if (hdl->obj_handle.type == SYMBOLIC_LINK) {
if (hdl->u.symlink.link_content != NULL)
gsh_free(hdl->u.symlink.link_content);
} else if (hdl->obj_handle.type == SOCKET_FILE) {
if (hdl->u.sock.sock_name != NULL)
gsh_free(hdl->u.sock.sock_name);
if (hdl->u.sock.sock_dir != NULL)
gsh_free(hdl->u.sock.sock_dir);
}
gsh_free(hdl); /* elvis has left the building */
return NULL;
}
/**
* FSAL_open:
* Open a regular file for reading/writing its data content.
*
* \param filehandle (input):
* Handle of the file to be read/modified.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param openflags (input):
* Flags that indicates behavior for file opening and access.
* This is an inclusive OR of the following values
* ( such of them are not compatible) :
* - FSAL_O_RDONLY: opening file for reading only.
* - FSAL_O_RDWR: opening file for reading and writing.
* - FSAL_O_WRONLY: opening file for writting only.
* - FSAL_O_APPEND: always write at the end of the file.
* - FSAL_O_TRUNC: truncate the file to 0 on opening.
* \param file_descriptor (output):
* The file descriptor to be used for FSAL_read/write operations.
* \param file_attributes (optionnal input/output):
* Post operation attributes.
* 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).
*
* \return Major error codes:
* - ERR_FSAL_NO_ERROR: no error.
* - Another error code if an error occured during this call.
*/
fsal_status_t LUSTREFSAL_open(lustrefsal_handle_t * p_filehandle, /* IN */
lustrefsal_op_context_t * p_context, /* IN */
fsal_openflags_t openflags, /* IN */
lustrefsal_file_t * p_file_descriptor, /* OUT */
fsal_attrib_list_t * p_file_attributes /* [ IN/OUT ] */
)
{
int rc, errsv;
fsal_status_t status;
fsal_path_t fsalpath;
struct stat buffstat;
int posix_flags = 0;
/* sanity checks.
* note : file_attributes is optional.
*/
if(!p_filehandle || !p_context || !p_file_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_open);
status = fsal_internal_Handle2FidPath(p_context, p_filehandle, &fsalpath);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_open);
/* retrieve file attributes for checking access rights */
TakeTokenFSCall();
rc = lstat(fsalpath.path, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
{
if(errsv == ENOENT)
Return(ERR_FSAL_STALE, errsv, INDEX_FSAL_open);
else
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_open);
}
status =
fsal_internal_testAccess(p_context,
openflags & FSAL_O_RDONLY ? FSAL_R_OK : FSAL_W_OK,
&buffstat, NULL);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_open);
/* convert fsal open flags to posix open flags */
rc = fsal2posix_openflags(openflags, &posix_flags);
/* flags conflicts. */
if(rc)
{
LogEvent(COMPONENT_FSAL, "Invalid/conflicting flags : %#X",
openflags);
Return(rc, 0, INDEX_FSAL_open);
}
TakeTokenFSCall();
p_file_descriptor->fd = open(fsalpath.path, posix_flags, 0644);
errsv = errno;
ReleaseTokenFSCall();
if(p_file_descriptor->fd == -1)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_open);
/* set the read-only flag of the file descriptor */
p_file_descriptor->ro = openflags & FSAL_O_RDONLY;
/* output attributes */
if(p_file_attributes)
{
status = posix2fsal_attributes(&buffstat, p_file_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_file_attributes->asked_attributes);
FSAL_SET_MASK(p_file_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_open);
}
/**
* FSAL_create:
* Create a regular file.
*
* \param extparent (input):
* Handle of the parent directory where the file is to be created.
* \param filename (input):
* Pointer to the name of the file to be created.
* \param context (input):
* Authentication context for the operation (user, export...).
* \param accessmode (input):
* Mode for the file 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 file.
* \param object_attributes (optionnal input/output):
* The postop attributes of the created file.
* 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).
* Can be NULL.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - ERR_FSAL_STALE (parent_directory_handle does not address an existing object)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Other error codes can be returned :
* ERR_FSAL_ACCESS, ERR_FSAL_EXIST, ERR_FSAL_IO, ...
*
* NB: if getting postop attributes failed,
* the function does not return an error
* but the FSAL_ATTR_RDATTR_ERR bit is set in
* the object_attributes->asked_attributes field.
*/
fsal_status_t CEPHFSAL_create(fsal_handle_t * extparent,
fsal_name_t * filename,
fsal_op_context_t * extcontext,
fsal_accessmode_t accessmode,
fsal_handle_t * object_handle,
fsal_attrib_list_t * object_attributes)
{
int rc;
mode_t mode;
struct Fh *fd;
struct stat st;
char strname[FSAL_MAX_NAME_LEN];
cephfsal_handle_t* parent = (cephfsal_handle_t*) extparent;
cephfsal_op_context_t* context = (cephfsal_op_context_t*) extcontext;
struct ceph_mount_info *cmount = context->export_context->cmount;
int uid = FSAL_OP_CONTEXT_TO_UID(context);
int gid = FSAL_OP_CONTEXT_TO_GID(context);
/* sanity checks.
* note : object_attributes is optional.
*/
if(!parent || !context || !object_handle || !filename)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_create);
memset(object_handle, 0, sizeof(cephfsal_handle_t));
mode = fsal2unix_mode(accessmode);
mode = mode & ~global_fs_info.umask;
FSAL_name2str(filename, strname, FSAL_MAX_NAME_LEN);
TakeTokenFSCall();
rc = ceph_ll_create(cmount, VINODE(parent), strname,
mode, 0, &fd, &st, uid, gid);
ceph_ll_close(cmount, fd);
ReleaseTokenFSCall();
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_create);
rc = stat2fsal_fh(cmount,
&st,
(cephfsal_handle_t*) object_handle);
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_create);
if(object_attributes)
{
fsal_status_t status;
status = posix2fsal_attributes(&st, object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_create);
}
}
/* OK */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_create);
}
/**
* FSAL_mknode:
* Create a special object in the filesystem.
* Not supported upon HPSS.
*
* \return ERR_FSAL_NOTSUPP.
*/
fsal_status_t POSIXFSAL_mknode(fsal_handle_t * parentdir_hdl, /* IN */
fsal_name_t * p_node_name, /* IN */
fsal_op_context_t * context, /* IN */
fsal_accessmode_t accessmode, /* IN */
fsal_nodetype_t nodetype, /* IN */
fsal_dev_t * dev, /* IN */
fsal_handle_t * object_handle, /* OUT (handle to the created node) */
fsal_attrib_list_t * node_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * parentdir_handle = (posixfsal_handle_t *) parentdir_hdl;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
posixfsal_handle_t * p_object_handle = (posixfsal_handle_t *) object_handle;
int rc, errsv;
int setgid_bit = 0;
struct stat buffstat;
fsal_status_t status;
fsal_path_t fsalpath;
fsal_posixdb_fileinfo_t info;
mode_t unix_mode = 0;
dev_t unix_dev = 0;
/* 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 destination path */
status =
fsal_internal_getPathFromHandle(p_context, parentdir_handle, 1, &fsalpath,
&buffstat);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mknode);
/* Check the user can write in the directory, and check weither the setgid bit on the directory */
if(buffstat.st_mode & S_ISGID)
setgid_bit = 1;
status = fsal_internal_testAccess(p_context, FSAL_W_OK | FSAL_X_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mknode);
status = fsal_internal_appendFSALNameToFSALPath(&fsalpath, p_node_name);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mknode);
/* creates the node, then stats it */
TakeTokenFSCall();
rc = mknod(fsalpath.path, unix_mode, unix_dev);
if(!rc)
rc = lstat(fsalpath.path, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mknode);
/* add the object to the database */
if(FSAL_IS_ERROR(status = fsal_internal_posix2posixdb_fileinfo(&buffstat, &info)))
Return(status.major, status.minor, INDEX_FSAL_mknode);
if(FSAL_IS_ERROR
(status =
fsal_internal_posixdb_add_entry(p_context->p_conn, p_node_name, &info,
parentdir_handle, p_object_handle)))
Return(status.major, status.minor, INDEX_FSAL_mknode);
/* the node has been created */
/* chown the file 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 = lchown(fsalpath.path, p_context->credential.user,
setgid_bit ? -1 : (int)p_context->credential.group);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mknode);
buffstat.st_uid = p_context->credential.user;
buffstat.st_gid = p_context->credential.group;
}
/* Fills the attributes if needed */
if(node_attributes)
{
status = posix2fsal_attributes(&buffstat, 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_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 POSIXFSAL_mkdir(fsal_handle_t * parent_directory_handle, /* IN */
fsal_name_t * p_dirname, /* IN */
fsal_op_context_t * context, /* IN */
fsal_accessmode_t accessmode, /* IN */
fsal_handle_t * object_handle, /* OUT */
fsal_attrib_list_t * p_object_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * p_parent_directory_handle
= (posixfsal_handle_t *) parent_directory_handle;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
posixfsal_handle_t * p_object_handle = (posixfsal_handle_t *) object_handle;
int rc, errsv;
int setgid_bit = 0;
struct stat buffstat;
mode_t unix_mode;
fsal_status_t status;
fsal_path_t fsalpath;
fsal_posixdb_fileinfo_t info;
/* 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 HPSS mode. */
unix_mode = fsal2unix_mode(accessmode);
/* Apply umask */
unix_mode = unix_mode & ~global_fs_info.umask;
/* build the destination path */
status =
fsal_internal_getPathFromHandle(p_context, p_parent_directory_handle, 1, &fsalpath,
&buffstat);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mkdir);
/* Check the user can write in the directory, and check the setgid bit on the directory */
if(buffstat.st_mode & S_ISGID)
setgid_bit = 1;
status = fsal_internal_testAccess(p_context, FSAL_W_OK | FSAL_X_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mkdir);
status = fsal_internal_appendFSALNameToFSALPath(&fsalpath, p_dirname);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_mkdir);
/* creates the directory and stats it */
TakeTokenFSCall();
rc = mkdir(fsalpath.path, unix_mode);
if(!rc)
rc = lstat(fsalpath.path, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mkdir);
/* add the directory to the database */
if(FSAL_IS_ERROR(status = fsal_internal_posix2posixdb_fileinfo(&buffstat, &info)))
Return(status.major, status.minor, INDEX_FSAL_mkdir);
if(FSAL_IS_ERROR
(status =
fsal_internal_posixdb_add_entry(p_context->p_conn, p_dirname, &info,
p_parent_directory_handle, p_object_handle)))
Return(status.major, status.minor, INDEX_FSAL_mkdir);
/* the directory has been created */
/* chown the file 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 = lchown(fsalpath.path, p_context->credential.user,
setgid_bit ? -1 : (int)p_context->credential.group);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_mkdir);
buffstat.st_uid = p_context->credential.user;
buffstat.st_gid = p_context->credential.group;
}
/* Fills the attributes if needed */
if(p_object_attributes)
{
status = posix2fsal_attributes(&buffstat, 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_status_t fetch_attrs(struct vfs_fsal_obj_handle *myself,
int my_fd, struct attrlist *attrs)
{
struct stat stat;
int retval = 0;
fsal_status_t status = {0, 0};
const char *func = "unknown";
/* Now stat the file as appropriate */
switch (myself->obj_handle.type) {
case SOCKET_FILE:
case CHARACTER_FILE:
case BLOCK_FILE:
retval = fstatat(my_fd, myself->u.unopenable.name, &stat,
AT_SYMLINK_NOFOLLOW);
func = "fstatat";
break;
case REGULAR_FILE:
retval = fstat(my_fd, &stat);
func = "fstat";
break;
case SYMBOLIC_LINK:
case FIFO_FILE:
case DIRECTORY:
retval = vfs_stat_by_handle(my_fd, &stat);
func = "vfs_stat_by_handle";
break;
case NO_FILE_TYPE:
case EXTENDED_ATTR:
/* Caught during open with EINVAL */
break;
}
if (retval < 0) {
if (errno == ENOENT)
retval = ESTALE;
else
retval = errno;
LogDebug(COMPONENT_FSAL, "%s failed with %s", func,
strerror(retval));
if (attrs->mask & ATTR_RDATTR_ERR) {
/* Caller asked for error to be visible. */
attrs->mask = ATTR_RDATTR_ERR;
}
return fsalstat(posix2fsal_error(retval), retval);
}
posix2fsal_attributes(&stat, attrs);
attrs->fsid = myself->obj_handle.fs->fsid;
if (myself->sub_ops && myself->sub_ops->getattrs) {
status =
myself->sub_ops->getattrs(myself, my_fd, attrs->mask, attrs);
if (FSAL_IS_ERROR(status) &&
(attrs->mask & ATTR_RDATTR_ERR) != 0) {
/* Caller asked for error to be visible. */
attrs->mask = ATTR_RDATTR_ERR;
}
}
if (!FSAL_IS_ERROR(status)) {
/* Make sure ATTR_RDATTR_ERR is cleared on success. */
attrs->mask &= ~ATTR_RDATTR_ERR;
}
return status;
}
/**
* FSAL_readdir :
* Read the entries of an opened directory.
*
* \param dir_descriptor (input):
* Pointer to the directory descriptor filled by FSAL_opendir.
* \param start_position (input):
* Cookie that indicates the first object to be read during
* this readdir operation.
* This should be :
* - FSAL_READDIR_FROM_BEGINNING for reading the content
* of the directory from the beginning.
* - The end_position parameter returned by the previous
* call to FSAL_readdir.
* \param get_attr_mask (input)
* Specify the set of attributes to be retrieved for directory entries.
* \param buffersize (input)
* The size (in bytes) of the buffer where
* the direntries are to be stored.
* \param pdirent (output)
* Adresse of the buffer where the direntries are to be stored.
* \param end_position (output)
* Cookie that indicates the current position in the directory.
* \param nb_entries (output)
* Pointer to the number of entries read during the call.
* \param end_of_dir (output)
* Pointer to a boolean that indicates if the end of dir
* has been reached during the call.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t POSIXFSAL_readdir(fsal_dir_t * dir_descriptor, /* IN */
fsal_cookie_t start_pos, /* 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 */
)
{
posixfsal_dir_t * p_dir_descriptor = (posixfsal_dir_t *) dir_descriptor;
posixfsal_cookie_t start_position, telldir_pos;
posixfsal_cookie_t * p_end_position = (posixfsal_cookie_t *) end_position;
fsal_status_t st;
fsal_posixdb_status_t stdb;
fsal_count_t max_dir_entries;
struct dirent *dp;
struct dirent dpe;
struct stat buffstat;
fsal_path_t fsalpath;
fsal_posixdb_fileinfo_t infofs;
int rc;
/*****************/
/* 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 */
/***************************/
memcpy ( (char *)&start_position.data.cookie, (char *)&start_pos.data, sizeof( off_t ) ) ;
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.data.cookie);
rc = errno;
}
if(rc)
{
st.major = posix2fsal_error(rc);
st.minor = rc;
goto readdir_error;
}
/************************/
/* browse the directory */
/************************/
*p_nb_entries = 0;
while(*p_nb_entries < max_dir_entries)
{
/***********************/
/* read the next entry */
/***********************/
TakeTokenFSCall();
rc = readdir_r(p_dir_descriptor->p_dir, &dpe, &dp);
ReleaseTokenFSCall();
if(rc)
{
st.major = posix2fsal_error(errno);
st.minor = errno;
goto readdir_error;
} /* End of directory */
if(!dp)
{
*p_end_of_dir = 1;
break;
}
/***********************************/
/* Get information about the entry */
/***********************************/
/* 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))))
goto readdir_error;
memcpy(&fsalpath, &(p_dir_descriptor->path), sizeof(fsal_path_t));
st = fsal_internal_appendFSALNameToFSALPath(&fsalpath,
&(p_pdirent[*p_nb_entries].name));
if(FSAL_IS_ERROR(st))
goto readdir_error;
/* get object info */
TakeTokenFSCall();
rc = lstat(fsalpath.path, &buffstat);
ReleaseTokenFSCall();
if(rc)
{
st.major = posix2fsal_error(errno);
st.minor = errno;
goto readdir_error;
}
if(FSAL_IS_ERROR(st = fsal_internal_posix2posixdb_fileinfo(&buffstat, &infofs)))
goto readdir_error;
/********************/
/* fills the handle */
/********************/
/* check for "." and ".." */
if(!strcmp(dp->d_name, "."))
{
memcpy(&(p_pdirent[*p_nb_entries].handle), &(p_dir_descriptor->handle),
sizeof(posixfsal_handle_t));
}
else if(!strcmp(dp->d_name, ".."))
{
stdb = fsal_posixdb_getParentDirHandle(p_dir_descriptor->context.p_conn,
&(p_dir_descriptor->handle),
(posixfsal_handle_t *) &(p_pdirent[*p_nb_entries].handle));
if(FSAL_POSIXDB_IS_ERROR(stdb) && FSAL_IS_ERROR(st = posixdb2fsal_error(stdb)))
goto readdir_error;
}
else
{
#ifdef _USE_POSIXDB_READDIR_BLOCK
if(p_dir_descriptor->dbentries_count > -1)
{ /* look for the entry in dbentries */
st = fsal_internal_getInfoFromChildrenList(&(p_dir_descriptor->context),
&(p_dir_descriptor->handle),
&(p_pdirent[*p_nb_entries].name),
&infofs,
p_dir_descriptor->p_dbentries,
p_dir_descriptor->
dbentries_count,
&(p_pdirent[*p_nb_entries].
handle));
}
else
#endif
{ /* get handle for the entry */
st = fsal_internal_getInfoFromName(&(p_dir_descriptor->context),
&(p_dir_descriptor->handle),
&(p_pdirent[*p_nb_entries].name),
&infofs,
(posixfsal_handle_t *) &(p_pdirent[*p_nb_entries].handle));
}
if(FSAL_IS_ERROR(st))
goto readdir_error;
} /* end of name check for "." and ".." */
/************************
* Fills the attributes *
************************/
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))
goto readdir_error;
/*
*
**/
telldir_pos.data.cookie = telldir(p_dir_descriptor->p_dir);
memcpy(&p_pdirent[*p_nb_entries].cookie, &telldir_pos, sizeof(fsal_cookie_t));
p_pdirent[*p_nb_entries].nextentry = NULL;
if(*p_nb_entries)
p_pdirent[*p_nb_entries - 1].nextentry = &(p_pdirent[*p_nb_entries]);
memcpy(p_end_position, &p_pdirent[*p_nb_entries].cookie, sizeof(fsal_cookie_t));
(*p_nb_entries)++;
};
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_readdir);
/* return error, and free what must be freed */
readdir_error:
Return(st.major, st.minor, INDEX_FSAL_readdir);
}
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);
}
/**
* FSAL_opendir :
* Opens a directory for reading its content.
*
* \param dir_handle (input)
* the handle of the directory to be opened.
* \param cred (input)
* Permission context for the operation (user,...).
* \param dir_descriptor (output)
* pointer to an allocated structure that will receive
* directory stream informations, on successfull completion.
* \param dir_attributes (optional output)
* On successfull completion,the structure pointed
* by dir_attributes receives the new directory attributes.
* May be NULL.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t LUSTREFSAL_opendir(fsal_handle_t * p_dir_handle, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_dir_t *dir_desc, /* OUT */
fsal_attrib_list_t * p_dir_attributes /* [ IN/OUT ] */
)
{
int rc;
fsal_status_t status;
fsal_path_t fsalpath;
struct stat buffstat;
lustrefsal_dir_t *p_dir_descriptor = (lustrefsal_dir_t *)dir_desc;
/* sanity checks
* note : dir_attributes is optionnal.
*/
if(!p_dir_handle || !p_context || !p_dir_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_opendir);
/* get the path of the directory */
status = fsal_internal_Handle2FidPath(p_context, p_dir_handle, &fsalpath);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_opendir);
/* get directory metadata */
TakeTokenFSCall();
rc = lstat(fsalpath.path, &buffstat);
ReleaseTokenFSCall();
if(rc != 0)
{
rc = errno;
if(rc == ENOENT)
Return(ERR_FSAL_STALE, rc, INDEX_FSAL_opendir);
else
Return(posix2fsal_error(rc), rc, INDEX_FSAL_opendir);
}
/* Test access rights for this directory */
status = fsal_internal_testAccess(p_context, FSAL_R_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_opendir);
/* if everything is OK, fills the dir_desc structure : */
TakeTokenFSCall();
p_dir_descriptor->p_dir = opendir(fsalpath.path);
ReleaseTokenFSCall();
if(!p_dir_descriptor->p_dir)
Return(posix2fsal_error(errno), errno, INDEX_FSAL_opendir);
memcpy(&(p_dir_descriptor->context), p_context, sizeof(lustrefsal_op_context_t));
memcpy(&(p_dir_descriptor->path), &fsalpath, sizeof(fsal_path_t));
memcpy(&(p_dir_descriptor->handle), p_dir_handle, sizeof(lustrefsal_handle_t));
if(p_dir_attributes)
{
status = posix2fsal_attributes(&buffstat, p_dir_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_dir_attributes->asked_attributes);
FSAL_SET_MASK(p_dir_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_opendir);
}
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);
}
static struct closefd vfs_fsal_open_and_stat(struct fsal_export *exp,
struct vfs_fsal_obj_handle *myself,
struct stat *stat, int open_flags,
fsal_errors_t *fsal_error)
{
struct fsal_obj_handle *obj_hdl = &myself->obj_handle;
struct closefd cfd = { .fd = -1, .close_fd = false };
int retval = 0;
vfs_file_handle_t *fh = NULL;
vfs_alloc_handle(fh);
const char *func = "unknown";
struct vfs_filesystem *vfs_fs = myself->obj_handle.fs->private;
switch (obj_hdl->type) {
case SOCKET_FILE:
case CHARACTER_FILE:
case BLOCK_FILE:
cfd.fd = vfs_open_by_handle(vfs_fs,
myself->u.unopenable.dir,
O_PATH | O_NOACCESS,
fsal_error);
if (cfd.fd < 0) {
LogDebug(COMPONENT_FSAL,
"Failed with %s open_flags 0x%08x",
strerror(-cfd.fd), O_PATH | O_NOACCESS);
return cfd;
}
cfd.close_fd = true;
retval =
fstatat(cfd.fd, myself->u.unopenable.name, stat,
AT_SYMLINK_NOFOLLOW);
func = "fstatat";
break;
case REGULAR_FILE:
if (myself->u.file.openflags == FSAL_O_CLOSED) {
/* no file open at the moment */
cfd.fd = vfs_fsal_open(myself, open_flags, fsal_error);
if (cfd.fd < 0) {
LogDebug(COMPONENT_FSAL,
"Failed with %s open_flags 0x%08x",
strerror(-cfd.fd), open_flags);
return cfd;
}
cfd.close_fd = true;
} else {
cfd.fd = myself->u.file.fd;
}
retval = fstat(cfd.fd, stat);
func = "fstat";
break;
case SYMBOLIC_LINK:
open_flags |= (O_PATH | O_RDWR | O_NOFOLLOW);
goto vfos_open;
case FIFO_FILE:
open_flags |= O_NONBLOCK;
/* fall through */
case DIRECTORY:
default:
vfos_open:
cfd.fd = vfs_fsal_open(myself, open_flags, fsal_error);
if (cfd.fd < 0) {
LogDebug(COMPONENT_FSAL,
"Failed with %s open_flags 0x%08x",
strerror(-cfd.fd), open_flags);
return cfd;
}
cfd.close_fd = true;
retval = vfs_stat_by_handle(cfd.fd, myself->handle,
stat, open_flags);
func = "vfs_stat_by_handle";
break;
}
if (retval < 0) {
retval = errno;
if (cfd.close_fd) {
int rc;
rc = close(cfd.fd);
if (rc < 0) {
rc = errno;
LogDebug(COMPONENT_FSAL, "close failed with %s",
strerror(rc));
}
}
if (retval == ENOENT)
retval = ESTALE;
*fsal_error = posix2fsal_error(retval);
LogDebug(COMPONENT_FSAL, "%s failed with %s", func,
strerror(retval));
cfd.fd = -retval;
cfd.close_fd = false;
return cfd;
}
return cfd;
}
static fsal_status_t getattrs(struct fsal_obj_handle *obj_hdl)
{
struct vfs_fsal_obj_handle *myself;
struct closefd cfd = { .fd = -1, .close_fd = false };
struct stat stat;
fsal_errors_t fsal_error = ERR_FSAL_NO_ERROR;
fsal_status_t st;
int retval = 0;
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
if (obj_hdl->fsal != obj_hdl->fs->fsal) {
LogDebug(COMPONENT_FSAL,
"FSAL %s getattr for handle belonging to FSAL %s, ignoring",
obj_hdl->fsal->name,
obj_hdl->fs->fsal != NULL
? obj_hdl->fs->fsal->name
: "(none)");
goto out;
}
cfd = vfs_fsal_open_and_stat(op_ctx->fsal_export, myself, &stat,
O_RDONLY, &fsal_error);
if (cfd.fd >= 0) {
st = posix2fsal_attributes(&stat, &obj_hdl->attributes);
if (cfd.close_fd)
close(cfd.fd);
if (FSAL_IS_ERROR(st)) {
FSAL_CLEAR_MASK(obj_hdl->attributes.mask);
FSAL_SET_MASK(obj_hdl->attributes.mask,
ATTR_RDATTR_ERR);
fsal_error = st.major;
retval = st.minor;
} else {
obj_hdl->attributes.fsid = obj_hdl->fs->fsid;
}
} else {
LogDebug(COMPONENT_FSAL, "Failed with %s, fsal_error %s",
strerror(-cfd.fd),
fsal_error ==
ERR_FSAL_STALE ? "ERR_FSAL_STALE" : "other");
if (obj_hdl->type == SYMBOLIC_LINK
&& cfd.fd == -EPERM) {
/* You cannot open_by_handle (XFS on linux) a symlink
* and it throws an EPERM error for it.
* open_by_handle_at does not throw that error for
* symlinks so we play a game here. Since there is
* not much we can do with symlinks anyway,
* say that we did it but don't actually
* do anything. In this case, return the stat we got
* at lookup time. If you *really* want to tweek things
* like owners, get a modern linux kernel...
*/
fsal_error = ERR_FSAL_NO_ERROR;
goto out;
}
retval = -cfd.fd;
}
out:
return fsalstat(fsal_error, retval);
}
/*
* NOTE: this is done under protection of the attributes rwlock
* in the cache entry.
*/
static fsal_status_t setattrs(struct fsal_obj_handle *obj_hdl,
struct attrlist *attrs)
{
struct vfs_fsal_obj_handle *myself;
struct closefd cfd = { .fd = -1, .close_fd = false };
struct stat stat;
fsal_errors_t fsal_error = ERR_FSAL_NO_ERROR;
int retval = 0;
int open_flags = O_RDONLY;
/* apply umask, if mode attribute is to be changed */
if (FSAL_TEST_MASK(attrs->mask, ATTR_MODE))
attrs->mode &= ~op_ctx->fsal_export->exp_ops.
fs_umask(op_ctx->fsal_export);
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
if (obj_hdl->fsal != obj_hdl->fs->fsal) {
LogDebug(COMPONENT_FSAL,
"FSAL %s operation for handle belonging to FSAL %s, return EXDEV",
obj_hdl->fsal->name,
obj_hdl->fs->fsal != NULL
? obj_hdl->fs->fsal->name
: "(none)");
retval = EXDEV;
fsal_error = posix2fsal_error(retval);
goto hdlerr;
}
/* This is yet another "you can't get there from here". If this object
* is a socket (AF_UNIX), an fd on the socket s useless _period_.
* If it is for a symlink, without O_PATH, you will get an ELOOP error
* and (f)chmod doesn't work for a symlink anyway - not that it matters
* because access checking is not done on the symlink but the final
* target.
* AF_UNIX sockets are also ozone material. If the socket is already
* active listeners et al, you can manipulate the mode etc. If it is
* just sitting there as in you made it with a mknod.
* (one of those leaky abstractions...)
* or the listener forgot to unlink it, it is lame duck.
*/
if (FSAL_TEST_MASK(attrs->mask, ATTR_SIZE))
open_flags = O_RDWR;
cfd = vfs_fsal_open_and_stat(op_ctx->fsal_export, myself, &stat,
open_flags, &fsal_error);
if (cfd.fd < 0) {
if (obj_hdl->type == SYMBOLIC_LINK &&
cfd.fd == -EPERM) {
/* You cannot open_by_handle (XFS) a symlink and it
* throws an EPERM error for it. open_by_handle_at
* does not throw that error for symlinks so we play a
* game here. Since there is not much we can do with
* symlinks anyway, say that we did it
* but don't actually do anything.
* If you *really* want to tweek things
* like owners, get a modern linux kernel...
*/
fsal_error = ERR_FSAL_NO_ERROR;
goto out;
}
return fsalstat(fsal_error, cfd.fd);
}
/** TRUNCATE **/
if (FSAL_TEST_MASK(attrs->mask, ATTR_SIZE)) {
if (obj_hdl->type != REGULAR_FILE) {
fsal_error = ERR_FSAL_INVAL;
goto fileerr;
}
retval = ftruncate(cfd.fd, attrs->filesize);
if (retval != 0) {
/* XXX ESXi volume creation pattern reliably
* reaches this point and reliably can successfully
* ftruncate on reopen. I don't know yet if fd if
* we failed to handle a previous error, or what.
* I don't see a prior failed op in wireshark. */
if (retval == -1 /* bad fd */) {
vfs_close(obj_hdl);
if (cfd.close_fd)
close(cfd.fd);
cfd = vfs_fsal_open_and_stat(
op_ctx->fsal_export,
myself, &stat,
open_flags,
&fsal_error);
retval = ftruncate(cfd.fd, attrs->filesize);
if (retval != 0)
goto fileerr;
} else
goto fileerr;
}
}
/** CHMOD **/
if (FSAL_TEST_MASK(attrs->mask, ATTR_MODE)) {
/* The POSIX chmod call doesn't affect the symlink object, but
* the entry it points to. So we must ignore it.
*/
if (!S_ISLNK(stat.st_mode)) {
if (vfs_unopenable_type(obj_hdl->type))
retval = fchmodat(cfd.fd,
myself->u.unopenable.name,
fsal2unix_mode(attrs->mode),
0);
else
retval = fchmod(cfd.fd,
fsal2unix_mode(attrs->mode));
if (retval != 0)
goto fileerr;
}
}
/** CHOWN **/
if (FSAL_TEST_MASK(attrs->mask, ATTR_OWNER | ATTR_GROUP)) {
uid_t user = FSAL_TEST_MASK(attrs->mask, ATTR_OWNER)
? (int)attrs->owner : -1;
gid_t group = FSAL_TEST_MASK(attrs->mask, ATTR_GROUP)
? (int)attrs->group : -1;
if (vfs_unopenable_type(obj_hdl->type))
retval = fchownat(cfd.fd, myself->u.unopenable.name,
user, group, AT_SYMLINK_NOFOLLOW);
else if (obj_hdl->type == SYMBOLIC_LINK)
retval = fchownat(cfd.fd, "", user, group,
AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH);
else
retval = fchown(cfd.fd, user, group);
if (retval)
goto fileerr;
}
/** UTIME **/
if (FSAL_TEST_MASK
(attrs->mask,
ATTR_ATIME | ATTR_MTIME | ATTR_ATIME_SERVER | ATTR_MTIME_SERVER)) {
struct timespec timebuf[2];
if (obj_hdl->type == SYMBOLIC_LINK)
goto out; /* Setting time on symlinks is illegal */
/* Atime */
if (FSAL_TEST_MASK(attrs->mask, ATTR_ATIME_SERVER)) {
timebuf[0].tv_sec = 0;
timebuf[0].tv_nsec = UTIME_NOW;
} else if (FSAL_TEST_MASK(attrs->mask, ATTR_ATIME)) {
timebuf[0] = attrs->atime;
} else {
timebuf[0].tv_sec = 0;
timebuf[0].tv_nsec = UTIME_OMIT;
}
/* Mtime */
if (FSAL_TEST_MASK(attrs->mask, ATTR_MTIME_SERVER)) {
timebuf[1].tv_sec = 0;
timebuf[1].tv_nsec = UTIME_NOW;
} else if (FSAL_TEST_MASK(attrs->mask, ATTR_MTIME)) {
timebuf[1] = attrs->mtime;
} else {
timebuf[1].tv_sec = 0;
timebuf[1].tv_nsec = UTIME_OMIT;
}
if (vfs_unopenable_type(obj_hdl->type))
retval = vfs_utimesat(cfd.fd, myself->u.unopenable.name,
timebuf, AT_SYMLINK_NOFOLLOW);
else
retval = vfs_utimes(cfd.fd, timebuf);
if (retval != 0)
goto fileerr;
}
goto out;
fileerr:
retval = errno;
fsal_error = posix2fsal_error(retval);
out:
if (cfd.close_fd)
close(cfd.fd);
hdlerr:
return fsalstat(fsal_error, retval);
}
/* file_unlink
* unlink the named file in the directory
*/
static fsal_status_t file_unlink(struct fsal_obj_handle *dir_hdl,
const char *name)
{
struct vfs_fsal_obj_handle *myself;
fsal_errors_t fsal_error = ERR_FSAL_NO_ERROR;
struct stat stat;
int fd;
int retval = 0;
myself = container_of(dir_hdl, struct vfs_fsal_obj_handle, obj_handle);
if (dir_hdl->fsal != dir_hdl->fs->fsal) {
LogDebug(COMPONENT_FSAL,
"FSAL %s operation for handle belonging to FSAL %s, return EXDEV",
dir_hdl->fsal->name,
dir_hdl->fs->fsal != NULL
? dir_hdl->fs->fsal->name
: "(none)");
retval = EXDEV;
fsal_error = posix2fsal_error(retval);
goto out;
}
fd = vfs_fsal_open(myself, O_PATH | O_NOACCESS, &fsal_error);
if (fd < 0) {
retval = -fd;
goto out;
}
retval = fstatat(fd, name, &stat, AT_SYMLINK_NOFOLLOW);
if (retval < 0) {
retval = errno;
LogDebug(COMPONENT_FSAL, "fstatat %s failed %s", name,
strerror(retval));
if (retval == ENOENT)
fsal_error = ERR_FSAL_STALE;
else
fsal_error = posix2fsal_error(retval);
goto errout;
}
fsal_set_credentials(op_ctx->creds);
retval = unlinkat(fd, name, (S_ISDIR(stat.st_mode)) ? AT_REMOVEDIR : 0);
if (retval < 0) {
retval = errno;
if (retval == ENOENT)
fsal_error = ERR_FSAL_STALE;
else
fsal_error = posix2fsal_error(retval);
}
fsal_restore_ganesha_credentials();
errout:
close(fd);
out:
return fsalstat(fsal_error, retval);
}
/* handle_digest
* fill in the opaque f/s file handle part.
* we zero the buffer to length first. This MAY already be done above
* at which point, remove memset here because the caller is zeroing
* the whole struct.
*/
static fsal_status_t handle_digest(const struct fsal_obj_handle *obj_hdl,
fsal_digesttype_t output_type,
struct gsh_buffdesc *fh_desc)
{
const struct vfs_fsal_obj_handle *myself;
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
if (obj_hdl->fsal != obj_hdl->fs->fsal) {
/* Log, but allow digest */
LogDebug(COMPONENT_FSAL,
"FSAL %s operation for handle belonging to FSAL %s",
obj_hdl->fsal->name,
obj_hdl->fs->fsal != NULL
? obj_hdl->fs->fsal->name
: "(none)");
}
switch (output_type) {
case FSAL_DIGEST_NFSV3:
case FSAL_DIGEST_NFSV4:
if (fh_desc->len < myself->handle->handle_len) {
LogMajor(COMPONENT_FSAL,
"Space too small for handle. need %d, have %lu",
(int) myself->handle->handle_len,
fh_desc->len);
return fsalstat(ERR_FSAL_TOOSMALL, 0);
}
memcpy(fh_desc->addr,
myself->handle->handle_data,
myself->handle->handle_len);
break;
default:
return fsalstat(ERR_FSAL_SERVERFAULT, 0);
}
fh_desc->len = myself->handle->handle_len;
return fsalstat(ERR_FSAL_NO_ERROR, 0);
}
/**
* handle_to_key
* return a handle descriptor into the handle in this object handle
* @TODO reminder. make sure things like hash keys don't point here
* after the handle is released.
*/
static void handle_to_key(struct fsal_obj_handle *obj_hdl,
struct gsh_buffdesc *fh_desc)
{
struct vfs_fsal_obj_handle *myself;
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
fh_desc->addr = myself->handle->handle_data;
fh_desc->len = myself->handle->handle_len;
}
/*
* release
* release our export first so they know we are gone
*/
static void release(struct fsal_obj_handle *obj_hdl)
{
struct vfs_fsal_obj_handle *myself;
object_file_type_t type = obj_hdl->type;
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
if (type == REGULAR_FILE) {
fsal_status_t st = vfs_close(obj_hdl);
if (FSAL_IS_ERROR(st)) {
LogCrit(COMPONENT_FSAL,
"Could not close hdl 0x%p, error %s(%d)",
obj_hdl, strerror(st.minor), st.minor);
}
}
fsal_obj_handle_fini(obj_hdl);
if (type == SYMBOLIC_LINK) {
if (myself->u.symlink.link_content != NULL)
gsh_free(myself->u.symlink.link_content);
} else if (vfs_unopenable_type(type)) {
if (myself->u.unopenable.name != NULL)
gsh_free(myself->u.unopenable.name);
if (myself->u.unopenable.dir != NULL)
gsh_free(myself->u.unopenable.dir);
}
gsh_free(myself);
}
void vfs_handle_ops_init(struct fsal_obj_ops *ops)
{
ops->release = release;
ops->lookup = lookup;
ops->readdir = read_dirents;
ops->create = create;
ops->mkdir = makedir;
ops->mknode = makenode;
ops->symlink = makesymlink;
ops->readlink = readsymlink;
ops->test_access = fsal_test_access;
ops->getattrs = getattrs;
ops->setattrs = setattrs;
ops->link = linkfile;
ops->rename = renamefile;
ops->unlink = file_unlink;
ops->open = vfs_open;
ops->status = vfs_status;
ops->read = vfs_read;
ops->write = vfs_write;
ops->commit = vfs_commit;
ops->lock_op = vfs_lock_op;
ops->close = vfs_close;
ops->lru_cleanup = vfs_lru_cleanup;
ops->handle_digest = handle_digest;
ops->handle_to_key = handle_to_key;
/* xattr related functions */
ops->list_ext_attrs = vfs_list_ext_attrs;
ops->getextattr_id_by_name = vfs_getextattr_id_by_name;
ops->getextattr_value_by_name = vfs_getextattr_value_by_name;
ops->getextattr_value_by_id = vfs_getextattr_value_by_id;
ops->setextattr_value = vfs_setextattr_value;
ops->setextattr_value_by_id = vfs_setextattr_value_by_id;
ops->getextattr_attrs = vfs_getextattr_attrs;
ops->remove_extattr_by_id = vfs_remove_extattr_by_id;
ops->remove_extattr_by_name = vfs_remove_extattr_by_name;
}
/* export methods that create object handles
*/
/* lookup_path
* modeled on old api except we don't stuff attributes.
* KISS
*/
fsal_status_t vfs_lookup_path(struct fsal_export *exp_hdl,
const char *path, struct fsal_obj_handle **handle)
{
int dir_fd = -1;
struct stat stat;
struct vfs_fsal_obj_handle *hdl;
fsal_errors_t fsal_error = ERR_FSAL_NO_ERROR;
int retval = 0;
struct fsal_filesystem *fs;
struct fsal_dev__ dev;
vfs_file_handle_t *fh = NULL;
vfs_alloc_handle(fh);
*handle = NULL; /* poison it */
dir_fd = open_dir_by_path_walk(-1, path, &stat);
if (dir_fd < 0) {
LogCrit(COMPONENT_FSAL,
"Could not open directory for path %s",
path);
retval = -dir_fd;
goto errout;
}
dev = posix2fsal_devt(stat.st_dev);
fs = lookup_dev(&dev);
if (fs == NULL) {
LogInfo(COMPONENT_FSAL,
"Could not find file system for path %s",
path);
retval = ENOENT;
goto errout;
}
if (fs->fsal != exp_hdl->fsal) {
LogInfo(COMPONENT_FSAL,
"File system for path %s did not belong to FSAL %s",
path, exp_hdl->fsal->name);
retval = EACCES;
goto errout;
}
LogDebug(COMPONENT_FSAL,
"filesystem %s for path %s",
fs->path, path);
retval = vfs_fd_to_handle(dir_fd, fs, fh);
if (retval < 0) {
retval = errno;
LogCrit(COMPONENT_FSAL,
"Could not get handle for path %s, error %s",
path, strerror(retval));
goto errout;
}
/* allocate an obj_handle and fill it up */
hdl = alloc_handle(-1, fh, fs, &stat, NULL, "", exp_hdl);
if (hdl == NULL) {
retval = ENOMEM;
LogCrit(COMPONENT_FSAL,
"Could not allocate handle for path %s",
path);
goto errout;
}
close(dir_fd);
*handle = &hdl->obj_handle;
return fsalstat(ERR_FSAL_NO_ERROR, 0);
errout:
if (dir_fd >= 0)
close(dir_fd);
fsal_error = posix2fsal_error(retval);
return fsalstat(fsal_error, retval);
}
fsal_status_t vfs_check_handle(struct fsal_export *exp_hdl,
struct gsh_buffdesc *hdl_desc,
struct fsal_filesystem **fs,
vfs_file_handle_t *fh,
bool *dummy)
{
fsal_errors_t fsal_error = ERR_FSAL_NO_ERROR;
int retval = 0;
struct fsal_fsid__ fsid;
enum fsid_type fsid_type;
*fs = NULL;
if (!vfs_valid_handle(hdl_desc))
return fsalstat(ERR_FSAL_BADHANDLE, 0);
memcpy(fh->handle_data, hdl_desc->addr, hdl_desc->len);
fh->handle_len = hdl_desc->len;
*dummy = vfs_is_dummy_handle(fh);
retval = vfs_extract_fsid(fh, &fsid_type, &fsid);
if (retval == 0) {
*fs = lookup_fsid(&fsid, fsid_type);
if (*fs == NULL) {
LogInfo(COMPONENT_FSAL,
"Could not map "
"fsid=0x%016"PRIx64".0x%016"PRIx64
" to filesytem",
fsid.major, fsid.minor);
retval = ESTALE;
fsal_error = posix2fsal_error(retval);
goto errout;
}
if (((*fs)->fsal != exp_hdl->fsal) && !(*dummy)) {
LogInfo(COMPONENT_FSAL,
"fsid=0x%016"PRIx64".0x%016"PRIx64
" in handle not a %s filesystem",
fsid.major, fsid.minor,
exp_hdl->fsal->name);
retval = ESTALE;
fsal_error = posix2fsal_error(retval);
goto errout;
}
LogDebug(COMPONENT_FSAL,
"Found filesystem %s for handle for FSAL %s",
(*fs)->path,
(*fs)->fsal != NULL ? (*fs)->fsal->name : "(none)");
} else {
LogDebug(COMPONENT_FSAL,
"Could not map handle to fsid");
fsal_error = ERR_FSAL_BADHANDLE;
goto errout;
}
errout:
return fsalstat(fsal_error, retval);
}
static struct vfs_fsal_obj_handle *alloc_handle(int dirfd,
vfs_file_handle_t *fh,
struct fsal_filesystem *fs,
struct stat *stat,
vfs_file_handle_t *dir_fh,
const char *path,
struct fsal_export *exp_hdl)
{
struct vfs_fsal_export *myself =
container_of(exp_hdl, struct vfs_fsal_export, export);
struct vfs_fsal_obj_handle *hdl;
fsal_status_t st;
hdl = gsh_calloc(1,
(sizeof(struct vfs_fsal_obj_handle) +
sizeof(vfs_file_handle_t)));
if (hdl == NULL)
return NULL;
hdl->handle = (vfs_file_handle_t *) &hdl[1];
memcpy(hdl->handle, fh, sizeof(vfs_file_handle_t));
hdl->obj_handle.type = posix2fsal_type(stat->st_mode);
hdl->dev = posix2fsal_devt(stat->st_dev);
hdl->up_ops = exp_hdl->up_ops;
hdl->obj_handle.fs = fs;
if (hdl->obj_handle.type == REGULAR_FILE) {
hdl->u.file.fd = -1; /* no open on this yet */
hdl->u.file.openflags = FSAL_O_CLOSED;
} else if (hdl->obj_handle.type == SYMBOLIC_LINK) {
ssize_t retlink;
size_t len = stat->st_size + 1;
char *link_content = gsh_malloc(len);
if (link_content == NULL)
goto spcerr;
retlink =
vfs_readlink_by_handle(fh, dirfd, path, link_content, len);
if (retlink < 0 || retlink == len)
goto spcerr;
link_content[retlink] = '\0';
hdl->u.symlink.link_content = link_content;
hdl->u.symlink.link_size = len;
} else if (vfs_unopenable_type(hdl->obj_handle.type)) {
/* AF_UNIX sockets, character special, and block
special files require craziness */
if (dir_fh == NULL) {
int retval;
vfs_alloc_handle(dir_fh);
retval =
vfs_fd_to_handle(dirfd, hdl->obj_handle.fs, fh);
if (retval < 0)
goto spcerr;
}
hdl->u.unopenable.dir = gsh_malloc(sizeof(vfs_file_handle_t));
if (hdl->u.unopenable.dir == NULL)
goto spcerr;
memcpy(hdl->u.unopenable.dir, dir_fh,
sizeof(vfs_file_handle_t));
hdl->u.unopenable.name = gsh_strdup(path);
if (hdl->u.unopenable.name == NULL)
goto spcerr;
}
hdl->obj_handle.attributes.mask =
exp_hdl->exp_ops.fs_supported_attrs(exp_hdl);
st = posix2fsal_attributes(stat, &hdl->obj_handle.attributes);
if (FSAL_IS_ERROR(st))
goto spcerr;
hdl->obj_handle.attributes.fsid = fs->fsid;
fsal_obj_handle_init(&hdl->obj_handle, exp_hdl,
posix2fsal_type(stat->st_mode));
vfs_handle_ops_init(&hdl->obj_handle.obj_ops);
vfs_sub_init_handle_ops(myself, &hdl->obj_handle.obj_ops);
return hdl;
spcerr:
if (hdl->obj_handle.type == SYMBOLIC_LINK) {
if (hdl->u.symlink.link_content != NULL)
gsh_free(hdl->u.symlink.link_content);
} else if (vfs_unopenable_type(hdl->obj_handle.type)) {
if (hdl->u.unopenable.name != NULL)
gsh_free(hdl->u.unopenable.name);
if (hdl->u.unopenable.dir != NULL)
gsh_free(hdl->u.unopenable.dir);
}
gsh_free(hdl); /* elvis has left the building */
return NULL;
}
static void fill_dirent(fsal_dirent_t * to_be_filled,
fsal_attrib_mask_t getattr_mask,
const char *name, const struct stat *stbuf, off_t off)
{
fsal_status_t status;
struct stat tmp_statbuff;
int err = FALSE;
fusefsal_handle_t *fill_handle = (fusefsal_handle_t *) &to_be_filled->handle;
if(stbuf)
{
if(stbuf->st_ino == 0)
{
LogDebug(COMPONENT_FSAL,
"WARNING in fill_dirent: Filesystem doesn't provide inode numbers !!!");
}
fill_handle->data.inode = stbuf->st_ino;
fill_handle->data.device = stbuf->st_dev;
FSAL_str2name(name, strlen(name) + 1, &(to_be_filled->name));
((fusefsal_cookie_t *) &to_be_filled->cookie)->data = off;
/* local copy for non "const" calls */
tmp_statbuff = *stbuf;
/* set attributes */
to_be_filled->attributes.asked_attributes = getattr_mask;
status = posix2fsal_attributes(&tmp_statbuff, &to_be_filled->attributes);
LogFullDebug(COMPONENT_FSAL,
"getattr_mask = %X, recupere = %X, status=%d, inode=%llX.%llu, type=%d, posixmode=%#o, mode=%#o",
(unsigned int)getattr_mask, (unsigned int)to_be_filled->attributes.asked_attributes, status.major,
to_be_filled->attributes.fsid.major, to_be_filled->attributes.fileid,
to_be_filled->attributes.type, tmp_statbuff.st_mode,
to_be_filled->attributes.mode);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(to_be_filled->attributes.asked_attributes);
/* set getattr error bit in attr mask */
FSAL_SET_MASK(to_be_filled->attributes.asked_attributes, FSAL_ATTR_RDATTR_ERR);
err = TRUE;
}
}
/* if any error occured during conversion,
* or if values seem to be inconsistent,
* proceed a lookup afterward */
if(!stbuf
|| (stbuf->st_ino == 0)
|| err
|| to_be_filled->attributes.type == (fsal_nodetype_t) - 1
|| to_be_filled->attributes.mode == 0 || to_be_filled->attributes.numlinks == 0)
{
FSAL_CLEAR_MASK(to_be_filled->attributes.asked_attributes);
/* we only known entry name, we tag it for a later lookup.
*/
fill_handle->data.inode = INODE_TO_BE_COMPLETED;
FSAL_str2name(name, strlen(name) + 1, &(to_be_filled->name));
((fusefsal_cookie_t *) &to_be_filled->cookie)->data = off;
}
} /* fill_dirent */
/**
* FSAL_readdir :
* Read the entries of an opened directory.
*
* \param descriptor (input):
* Pointer to the directory descriptor filled by FSAL_opendir.
* \param start_position (input):
* Cookie that indicates the first object to be read during
* this readdir operation.
* This should be :
* - FSAL_READDIR_FROM_BEGINNING for reading the content
* of the directory from the beginning.
* - The end_position parameter returned by the previous
* call to FSAL_readdir.
* \param get_attr_mask (input)
* Specify the set of attributes to be retrieved for directory entries.
* \param buffersize (input)
* The size (in bytes) of the buffer where
* the direntries are to be stored.
* \param dirents (output)
* Adress of the buffer where the direntries are to be stored.
* \param end_position (output)
* Cookie that indicates the current position in the directory.
* \param count (output)
* Pointer to the number of entries read during the call.
* \param end_of_dir (output)
* Pointer to a boolean that indicates if the end of dir
* has been reached during the call.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Other error codes can be returned :
* ERR_FSAL_IO, ...
*/
fsal_status_t CEPHFSAL_readdir(fsal_dir_t *extdescriptor,
fsal_op_context_t * p_context, /* IN */
fsal_cookie_t extstart,
fsal_attrib_mask_t attrmask,
fsal_mdsize_t buffersize,
fsal_dirent_t *dirents,
fsal_cookie_t *extend,
fsal_count_t *count,
fsal_boolean_t *end_of_dir)
{
int rc = 0;
fsal_status_t status;
struct dirent de;
cephfsal_dir_t* descriptor = (cephfsal_dir_t*) extdescriptor;
struct ceph_mount_info *cmount = descriptor->ctx.export_context->cmount;
loff_t start = ((cephfsal_cookie_t*) extstart.data)->cookie;
loff_t* end = &((cephfsal_cookie_t*) extend->data)->cookie;
unsigned int max_entries = buffersize / sizeof(fsal_dirent_t);
/* sanity checks */
if(!descriptor || !dirents || !end || !count || !end_of_dir)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_readdir);
*end_of_dir = FALSE;
*count = 0;
TakeTokenFSCall();
(void) ceph_seekdir(cmount, DH(descriptor), start);
while ((*count <= max_entries) && !(*end_of_dir)) {
struct stat st;
memset(&dirents[*count], sizeof(fsal_dirent_t), 0);
memset(&de, sizeof(struct dirent), 0);
memset(&st, sizeof(struct stat), 0);
int stmask = 0;
TakeTokenFSCall();
rc = ceph_readdirplus_r(cmount, DH(descriptor), &de, &st, &stmask);
if (rc < 0) /* Error */
Return(posix2fsal_error(rc), 0, INDEX_FSAL_readdir);
else if (rc == 1) {
/* Got a dirent */
cephfsal_handle_t* entryhandle
= (cephfsal_handle_t*) &(dirents[*count].handle.data);
cephfsal_cookie_t* entrycookie
= (cephfsal_cookie_t*) &(dirents[*count].cookie);
/* skip . and .. */
if(!strcmp(de.d_name, ".") || !strcmp(de.d_name, ".."))
continue;
entryhandle->data.vi.ino.val = st.st_ino;
entryhandle->data.vi.snapid.val = st.st_dev;
status = FSAL_str2name(de.d_name, FSAL_MAX_NAME_LEN,
&(dirents[*count].name));
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_readdir);
entrycookie->data.cookie = ceph_telldir(cmount, DH(descriptor));
dirents[*count].attributes.asked_attributes = attrmask;
status =
posix2fsal_attributes(&st,
&(dirents[*count].attributes));
if(FSAL_IS_ERROR(status)) {
FSAL_CLEAR_MASK(dirents[*count].attributes
.asked_attributes);
FSAL_SET_MASK(dirents[*count].attributes.asked_attributes,
FSAL_ATTR_RDATTR_ERR);
}
if (*count != 0) {
dirents[(*count)-1].nextentry = &(dirents[*count]);
}
(*count)++;
} else if (rc == 0) /* EOF */
*end_of_dir = TRUE;
else{
/* Can't happen */
abort();
}
} /* while */
(*end) = ceph_telldir(cmount, DH(descriptor));
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_readdir);
}
/**
* FSAL_opendir :
* Opens a directory for reading its content.
*
* \param dir_handle (input)
* the handle of the directory to be opened.
* \param cred (input)
* Permission context for the operation (user,...).
* \param dir_descriptor (output)
* pointer to an allocated structure that will receive
* directory stream informations, on successfull completion.
* \param dir_attributes (optional output)
* On successfull completion,the structure pointed
* by dir_attributes receives the new directory attributes.
* May be NULL.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t VFSFSAL_opendir(vfsfsal_handle_t * p_dir_handle, /* IN */
vfsfsal_op_context_t * p_context, /* IN */
vfsfsal_dir_t * p_dir_descriptor, /* OUT */
fsal_attrib_list_t * p_dir_attributes /* [ IN/OUT ] */
)
{
int rc, errsv;
fsal_status_t status;
struct stat buffstat;
/* sanity checks
* note : dir_attributes is optionnal.
*/
if(!p_dir_handle || !p_context || !p_dir_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_opendir);
/* get the path of the directory */
TakeTokenFSCall();
status =
fsal_internal_handle2fd(p_context, p_dir_handle, &p_dir_descriptor->fd,
O_RDONLY | O_DIRECTORY);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_opendir);
/* get directory metadata */
TakeTokenFSCall();
rc = fstat(p_dir_descriptor->fd, &buffstat);
ReleaseTokenFSCall();
if(rc != 0)
{
close(p_dir_descriptor->fd);
if(rc == ENOENT)
Return(ERR_FSAL_STALE, errsv, INDEX_FSAL_opendir);
else
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_opendir);
}
/* Test access rights for this directory */
status = fsal_internal_testAccess(p_context, FSAL_R_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_opendir);
/* if everything is OK, fills the dir_desc structure : */
memcpy(&(p_dir_descriptor->context), p_context, sizeof(vfsfsal_op_context_t));
memcpy(&(p_dir_descriptor->handle), p_dir_handle, sizeof(vfsfsal_handle_t));
if(p_dir_attributes)
{
status = posix2fsal_attributes(&buffstat, p_dir_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_dir_attributes->asked_attributes);
FSAL_SET_MASK(p_dir_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
p_dir_descriptor->dir_offset = 0;
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_opendir);
}
/**
* @brief Up Thread
*
* @param Arg reference to void
*
*/
void *GPFSFSAL_UP_Thread(void *Arg)
{
struct gpfs_filesystem *gpfs_fs = Arg;
struct fsal_up_vector *event_func;
char thr_name[16];
int rc = 0;
struct pnfs_deviceid devid;
struct stat buf;
struct glock fl;
struct callback_arg callback;
struct gpfs_file_handle handle;
int reason = 0;
int flags = 0;
unsigned int *fhP;
int retry = 0;
struct gsh_buffdesc key;
uint32_t expire_time_attr = 0;
uint32_t upflags;
int errsv = 0;
fsal_status_t fsal_status = {0,};
#ifdef _VALGRIND_MEMCHECK
memset(&handle, 0, sizeof(handle));
memset(&buf, 0, sizeof(buf));
memset(&fl, 0, sizeof(fl));
memset(&devid, 0, sizeof(devid));
#endif
snprintf(thr_name, sizeof(thr_name),
"fsal_up_%"PRIu64".%"PRIu64,
gpfs_fs->fs->dev.major, gpfs_fs->fs->dev.minor);
SetNameFunction(thr_name);
LogFullDebug(COMPONENT_FSAL_UP,
"Initializing FSAL Callback context for %d.",
gpfs_fs->root_fd);
/* wait for nfs init completion to get general_fridge
* initialized which is needed for processing some upcall events
*/
nfs_init_wait();
/* Start querying for events and processing. */
while (1) {
LogFullDebug(COMPONENT_FSAL_UP,
"Requesting event from FSAL Callback interface for %d.",
gpfs_fs->root_fd);
handle.handle_size = GPFS_MAX_FH_SIZE;
handle.handle_key_size = OPENHANDLE_KEY_LEN;
handle.handle_version = OPENHANDLE_VERSION;
callback.interface_version =
GPFS_INTERFACE_VERSION + GPFS_INTERFACE_SUB_VER;
callback.mountdirfd = gpfs_fs->root_fd;
callback.handle = &handle;
callback.reason = &reason;
callback.flags = &flags;
callback.buf = &buf;
callback.fl = &fl;
callback.dev_id = &devid;
callback.expire_attr = &expire_time_attr;
rc = gpfs_ganesha(OPENHANDLE_INODE_UPDATE, &callback);
errsv = errno;
if (rc != 0) {
rc = -(rc);
if (rc > GPFS_INTERFACE_VERSION) {
LogFatal(COMPONENT_FSAL_UP,
"Ganesha version %d mismatch GPFS version %d.",
callback.interface_version, rc);
return NULL;
}
if (errsv == EINTR)
continue;
LogCrit(COMPONENT_FSAL_UP,
"OPENHANDLE_INODE_UPDATE failed for %d. rc %d, errno %d (%s) reason %d",
gpfs_fs->root_fd, rc, errsv,
strerror(errsv), reason);
/* @todo 1000 retry logic will go away once the
* OPENHANDLE_INODE_UPDATE ioctl separates EINTR
* and EUNATCH.
*/
if (errsv == EUNATCH && ++retry > 1000)
LogFatal(COMPONENT_FSAL_UP,
"GPFS file system %d has gone away.",
gpfs_fs->root_fd);
continue;
}
retry = 0;
/* flags is int, but only the least significant 2 bytes
* are valid. We are getting random bits into the upper
* 2 bytes! Workaround this until the kernel module
* gets fixed.
*/
flags = flags & 0xffff;
LogDebug(COMPONENT_FSAL_UP,
"inode update: rc %d reason %d update ino %"
PRId64 " flags:%x",
rc, reason, callback.buf->st_ino, flags);
LogFullDebug(COMPONENT_FSAL_UP,
"inode update: flags:%x callback.handle:%p handle size = %u handle_type:%d handle_version:%d key_size = %u handle_fsid=%X.%X f_handle:%p expire: %d",
*callback.flags, callback.handle,
callback.handle->handle_size,
callback.handle->handle_type,
callback.handle->handle_version,
callback.handle->handle_key_size,
callback.handle->handle_fsid[0],
callback.handle->handle_fsid[1],
callback.handle->f_handle, expire_time_attr);
callback.handle->handle_version = OPENHANDLE_VERSION;
fhP = (int *)&(callback.handle->f_handle[0]);
LogFullDebug(COMPONENT_FSAL_UP,
" inode update: handle %08x %08x %08x %08x %08x %08x %08x",
fhP[0], fhP[1], fhP[2], fhP[3], fhP[4], fhP[5],
fhP[6]);
/* Here is where we decide what type of event this is
* ... open,close,read,...,invalidate? */
key.addr = &handle;
key.len = handle.handle_key_size;
LogDebug(COMPONENT_FSAL_UP, "Received event to process for %d",
gpfs_fs->root_fd);
/* We need valid up_vector while processing some of the
* events below. Setup up vector and hold the mutex while
* processing the event for the entire duration.
*/
PTHREAD_MUTEX_lock(&gpfs_fs->upvector_mutex);
if (!setup_up_vector(gpfs_fs)) {
PTHREAD_MUTEX_unlock(&gpfs_fs->upvector_mutex);
return NULL;
}
event_func = gpfs_fs->up_vector;
switch (reason) {
case INODE_LOCK_GRANTED: /* Lock Event */
case INODE_LOCK_AGAIN: /* Lock Event */
{
LogMidDebug(COMPONENT_FSAL_UP,
"%s: owner %p pid %d type %d start %lld len %lld",
reason ==
INODE_LOCK_GRANTED ?
"inode lock granted" :
"inode lock again", fl.lock_owner,
fl.flock.l_pid, fl.flock.l_type,
(long long)fl.flock.l_start,
(long long)fl.flock.l_len);
fsal_lock_param_t lockdesc = {
.lock_sle_type = FSAL_POSIX_LOCK,
.lock_type = fl.flock.l_type,
.lock_start = fl.flock.l_start,
.lock_length = fl.flock.l_len
};
if (reason == INODE_LOCK_AGAIN)
fsal_status = up_async_lock_avail(
general_fridge,
event_func,
&key,
fl.lock_owner,
&lockdesc, NULL, NULL);
else
fsal_status = up_async_lock_grant(
general_fridge,
event_func,
&key,
fl.lock_owner,
&lockdesc, NULL, NULL);
}
break;
case BREAK_DELEGATION: /* Delegation Event */
LogDebug(COMPONENT_FSAL_UP,
"delegation recall: flags:%x ino %" PRId64,
flags, callback.buf->st_ino);
fsal_status = up_async_delegrecall(general_fridge,
event_func,
&key, NULL, NULL);
break;
case LAYOUT_FILE_RECALL: /* Layout file recall Event */
{
struct pnfs_segment segment = {
.offset = 0,
.length = UINT64_MAX,
.io_mode = LAYOUTIOMODE4_ANY
};
LogDebug(COMPONENT_FSAL_UP,
"layout file recall: flags:%x ino %"
PRId64, flags, callback.buf->st_ino);
fsal_status = up_async_layoutrecall(
general_fridge,
event_func,
&key,
LAYOUT4_NFSV4_1_FILES,
false, &segment,
NULL, NULL, NULL,
NULL);
}
break;
case LAYOUT_RECALL_ANY: /* Recall all layouts Event */
LogDebug(COMPONENT_FSAL_UP,
"layout recall any: flags:%x ino %" PRId64,
flags, callback.buf->st_ino);
/**
* @todo This functionality needs to be implemented as a
* bulk FSID CB_LAYOUTRECALL. RECALL_ANY isn't suitable
* since it can't be restricted to just one FSAL. Also
* an FSID LAYOUTRECALL lets you have multiplke
* filesystems exported from one FSAL and not yank layouts
* on all of them when you only need to recall them for one.
*/
break;
case LAYOUT_NOTIFY_DEVICEID: /* Device update Event */
LogDebug(COMPONENT_FSAL_UP,
"layout dev update: flags:%x ino %"
PRId64 " seq %d fd %d fsid 0x%" PRIx64,
flags,
callback.buf->st_ino,
devid.device_id2,
devid.device_id4,
devid.devid);
memset(&devid, 0, sizeof(devid));
devid.fsal_id = FSAL_ID_GPFS;
fsal_status = up_async_notify_device(general_fridge,
event_func,
NOTIFY_DEVICEID4_DELETE_MASK,
LAYOUT4_NFSV4_1_FILES,
&devid,
true, NULL,
NULL);
break;
case INODE_UPDATE: /* Update Event */
{
struct attrlist attr;
LogMidDebug(COMPONENT_FSAL_UP,
"inode update: flags:%x update ino %"
PRId64 " n_link:%d",
flags, callback.buf->st_ino,
(int)callback.buf->st_nlink);
/** @todo: This notification is completely
* asynchronous. If we happen to change some
* of the attributes later, we end up over
* writing those with these possibly stale
* values as we don't know when we get to
* update with these up call values. We should
* probably use time stamp or let the up call
* always provide UP_TIMES flag in which case
* we can compare the current ctime vs up call
* provided ctime before updating the
* attributes.
*
* For now, we think size attribute is more
* important than others, so invalidate the
* attributes and let ganesha fetch attributes
* as needed if this update includes a size
* change. We are careless for other attribute
* changes, and we may end up with stale values
* until this gets fixed!
*/
if (flags & (UP_SIZE | UP_SIZE_BIG)) {
fsal_status = event_func->invalidate(
event_func, &key,
FSAL_UP_INVALIDATE_CACHE);
break;
}
/* Check for accepted flags, any other changes
just invalidate. */
if (flags &
~(UP_SIZE | UP_NLINK | UP_MODE | UP_OWN |
UP_TIMES | UP_ATIME | UP_SIZE_BIG)) {
fsal_status = event_func->invalidate(
event_func, &key,
FSAL_UP_INVALIDATE_CACHE);
} else {
/* buf may not have all attributes set.
* Set the mask to what is changed
*/
attr.valid_mask = 0;
attr.acl = NULL;
upflags = 0;
if (flags & UP_SIZE)
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_SIZE | ATTR_SPACEUSED;
if (flags & UP_SIZE_BIG) {
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_SIZE | ATTR_SPACEUSED;
upflags |=
fsal_up_update_filesize_inc |
fsal_up_update_spaceused_inc;
}
if (flags & UP_MODE)
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_MODE;
if (flags & UP_OWN)
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_OWNER | ATTR_GROUP |
ATTR_MODE;
if (flags & UP_TIMES)
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_ATIME | ATTR_CTIME |
ATTR_MTIME;
if (flags & UP_ATIME)
attr.valid_mask |=
ATTR_CHGTIME | ATTR_CHANGE |
ATTR_ATIME;
if (flags & UP_NLINK)
attr.valid_mask |=
ATTR_NUMLINKS;
attr.request_mask = attr.valid_mask;
attr.expire_time_attr =
expire_time_attr;
posix2fsal_attributes(&buf, &attr);
fsal_status = event_func->update(
event_func, &key,
&attr, upflags);
if ((flags & UP_NLINK)
&& (attr.numlinks == 0)) {
upflags = fsal_up_nlink;
attr.valid_mask = 0;
attr.request_mask = 0;
fsal_status = up_async_update
(general_fridge,
event_func,
&key, &attr,
upflags, NULL, NULL);
}
}
}
break;
case THREAD_STOP: /* We wanted to terminate this thread */
LogDebug(COMPONENT_FSAL_UP,
"Terminating the GPFS up call thread for %d",
gpfs_fs->root_fd);
PTHREAD_MUTEX_unlock(&gpfs_fs->upvector_mutex);
return NULL;
case INODE_INVALIDATE:
LogMidDebug(COMPONENT_FSAL_UP,
"inode invalidate: flags:%x update ino %"
PRId64, flags, callback.buf->st_ino);
upflags = FSAL_UP_INVALIDATE_CACHE;
fsal_status = event_func->invalidate_close(
event_func,
&key,
upflags);
break;
case THREAD_PAUSE:
/* File system image is probably going away, but
* we don't need to do anything here as we
* eventually get other errors that stop this
* thread.
*/
PTHREAD_MUTEX_unlock(&gpfs_fs->upvector_mutex);
continue; /* get next event */
default:
PTHREAD_MUTEX_unlock(&gpfs_fs->upvector_mutex);
LogWarn(COMPONENT_FSAL_UP, "Unknown event: %d", reason);
continue;
}
PTHREAD_MUTEX_unlock(&gpfs_fs->upvector_mutex);
if (FSAL_IS_ERROR(fsal_status) &&
fsal_status.major != ERR_FSAL_NOENT) {
LogWarn(COMPONENT_FSAL_UP,
"Event %d could not be processed for fd %d rc %s",
reason, gpfs_fs->root_fd,
fsal_err_txt(fsal_status));
}
}
return NULL;
} /* GPFSFSAL_UP_Thread */
/**
* FSAL_opendir :
* Opens a directory for reading its content.
*
* \param dir_handle (input)
* the handle of the directory to be opened.
* \param cred (input)
* Permission context for the operation (user,...).
* \param dir_descriptor (output)
* pointer to an allocated structure that will receive
* directory stream informations, on successfull completion.
* \param dir_attributes (optional output)
* On successfull completion,the structure pointed
* by dir_attributes receives the new directory attributes.
* May be NULL.
*
* \return Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - Another error code if an error occured.
*/
fsal_status_t POSIXFSAL_opendir(fsal_handle_t * dir_handle, /* IN */
fsal_op_context_t * context, /* IN */
fsal_dir_t * dir_descriptor, /* OUT */
fsal_attrib_list_t * p_dir_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * p_dir_handle = (posixfsal_handle_t *) dir_handle;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
posixfsal_dir_t * p_dir_descriptor = (posixfsal_dir_t *) dir_descriptor;
int rc, errsv;
fsal_status_t status;
fsal_path_t fsalpath;
struct stat buffstat;
/* sanity checks
* note : dir_attributes is optionnal.
*/
if(!p_dir_handle || !p_context || !p_dir_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_opendir);
/* get the path of the directory */
status =
fsal_internal_getPathFromHandle(p_context, p_dir_handle, 1, &fsalpath, &buffstat);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_opendir);
/* Test access rights for this directory */
status = fsal_internal_testAccess(p_context, FSAL_R_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_opendir);
/* if everything is OK, fills the dir_desc structure : */
TakeTokenFSCall();
p_dir_descriptor->p_dir = opendir(fsalpath.path);
ReleaseTokenFSCall();
if(!p_dir_descriptor->p_dir)
Return(posix2fsal_error(errno), errno, INDEX_FSAL_opendir);
memcpy(&(p_dir_descriptor->context), p_context, sizeof(posixfsal_op_context_t));
memcpy(&(p_dir_descriptor->path), &fsalpath, sizeof(fsal_path_t));
memcpy(&(p_dir_descriptor->handle), p_dir_handle, sizeof(posixfsal_handle_t));
#ifdef _USE_POSIXDB_READDIR_BLOCK
p_dir_descriptor->p_dbentries = NULL;
p_dir_descriptor->dbentries_count = 0;
/* fill the p_dbentries list */
statusdb = fsal_posixdb_getChildren(p_dir_descriptor->context.p_conn,
&(p_dir_descriptor->handle),
FSAL_POSIXDB_MAXREADDIRBLOCKSIZE,
&(p_dir_descriptor->p_dbentries),
&(p_dir_descriptor->dbentries_count));
if(FSAL_POSIXDB_IS_ERROR(statusdb)) /* too many entries in the directory, or another error */
p_dir_descriptor->dbentries_count = -1;
#endif
if(p_dir_attributes)
{
TakeTokenFSCall();
rc = lstat(fsalpath.path, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc) /* lstat failed */
goto attr_err;
status = posix2fsal_attributes(&buffstat, p_dir_attributes);
if(FSAL_IS_ERROR(status))
{
attr_err:
FSAL_CLEAR_MASK(p_dir_attributes->asked_attributes);
FSAL_SET_MASK(p_dir_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_opendir);
}
/**
* FSAL_open:
* Open a regular file for reading/writing its data content.
*
* \param filehandle (input):
* Handle of the file to be read/modified.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param openflags (input):
* Flags that indicates behavior for file opening and access.
* This is an inclusive OR of the following values
* ( such of them are not compatible) :
* - FSAL_O_RDONLY: opening file for reading only.
* - FSAL_O_RDWR: opening file for reading and writing.
* - FSAL_O_WRONLY: opening file for writting only.
* - FSAL_O_APPEND: always write at the end of the file.
* - FSAL_O_TRUNC: truncate the file to 0 on opening.
* \param file_descriptor (output):
* The file descriptor to be used for FSAL_read/write operations.
* \param file_attributes (optionnal input/output):
* Post operation attributes.
* 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).
*
* \return Major error codes:
* - ERR_FSAL_NO_ERROR: no error.
* - Another error code if an error occured during this call.
*/
fsal_status_t XFSFSAL_open(fsal_handle_t * p_filehandle, /* IN */
fsal_op_context_t * p_context, /* IN */
fsal_openflags_t openflags, /* IN */
fsal_file_t * p_file_descriptor, /* OUT */
fsal_attrib_list_t * p_file_attributes /* [ IN/OUT ] */
)
{
int rc, errsv;
fsal_status_t status;
int fd = 0 ;
struct stat buffstat;
int posix_flags = 0;
/* sanity checks.
* note : file_attributes is optional.
*/
if(!p_filehandle || !p_context || !p_file_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_open);
/* convert fsal open flags to posix open flags */
rc = fsal2posix_openflags(openflags, &posix_flags);
/* flags conflicts. */
if(rc)
{
LogEvent(COMPONENT_FSAL, "Invalid/conflicting flags : %#X",
openflags);
Return(rc, 0, INDEX_FSAL_open);
}
TakeTokenFSCall();
status = fsal_internal_handle2fd(p_context, p_filehandle, &fd, posix_flags);
ReleaseTokenFSCall();
if(FSAL_IS_ERROR(status))
ReturnStatus(status, INDEX_FSAL_open);
/* retrieve file attributes for checking access rights */
TakeTokenFSCall();
rc = fstat(fd, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
{
close(fd);
if(errsv == ENOENT)
Return(ERR_FSAL_STALE, errsv, INDEX_FSAL_open);
else
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_open);
}
#if 0
/* No required, the open would have failed if not permitted */
status =
fsal_check_access(p_context,
openflags & FSAL_O_RDONLY ? FSAL_R_OK : FSAL_W_OK,
&buffstat, NULL);
if(FSAL_IS_ERROR(status))
{
close(fd);
ReturnStatus(status, INDEX_FSAL_open);
}
#endif
TakeTokenFSCall();
((xfsfsal_file_t *)p_file_descriptor)->fd = fd;
errsv = errno;
ReleaseTokenFSCall();
/* set the read-only flag of the file descriptor */
((xfsfsal_file_t *)p_file_descriptor)->ro = openflags & FSAL_O_RDONLY;
/* output attributes */
if(p_file_attributes)
{
status = posix2fsal_attributes(&buffstat, p_file_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_file_attributes->asked_attributes);
FSAL_SET_MASK(p_file_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_open);
}
fsal_status_t vfs_open2(struct fsal_obj_handle *obj_hdl,
struct state_t *state,
fsal_openflags_t openflags,
enum fsal_create_mode createmode,
const char *name,
struct attrlist *attrib_set,
fsal_verifier_t verifier,
struct fsal_obj_handle **new_obj,
struct attrlist *attrs_out,
bool *caller_perm_check)
{
int posix_flags = 0;
int fd, dir_fd;
int retval = 0;
mode_t unix_mode;
fsal_status_t status = {0, 0};
struct vfs_fd *my_fd = NULL;
struct vfs_fsal_obj_handle *myself, *hdl = NULL;
struct stat stat;
vfs_file_handle_t *fh = NULL;
bool truncated;
bool created = false;
if (state != NULL)
my_fd = (struct vfs_fd *)(state + 1);
myself = container_of(obj_hdl, struct vfs_fsal_obj_handle, obj_handle);
LogAttrlist(COMPONENT_FSAL, NIV_FULL_DEBUG,
"attrib_set ", attrib_set, false);
fsal2posix_openflags(openflags, &posix_flags);
truncated = (posix_flags & O_TRUNC) != 0;
LogFullDebug(COMPONENT_FSAL,
truncated ? "Truncate" : "No truncate");
if (createmode >= FSAL_EXCLUSIVE) {
/* Now fixup attrs for verifier if exclusive create */
set_common_verifier(attrib_set, verifier);
}
if (name == NULL) {
/* This is an open by handle */
struct vfs_fsal_obj_handle *myself;
myself = container_of(obj_hdl,
struct vfs_fsal_obj_handle,
obj_handle);
if (obj_hdl->fsal != obj_hdl->fs->fsal) {
LogDebug(COMPONENT_FSAL,
"FSAL %s operation for handle belonging to FSAL %s, return EXDEV",
obj_hdl->fsal->name, obj_hdl->fs->fsal->name);
return fsalstat(posix2fsal_error(EXDEV), EXDEV);
}
if (state != NULL) {
/* Prepare to take the share reservation, but only if we
* are called with a valid state (if state is NULL the
* caller is a stateless create such as NFS v3 CREATE).
*/
/* This can block over an I/O operation. */
PTHREAD_RWLOCK_wrlock(&obj_hdl->lock);
/* Check share reservation conflicts. */
status = check_share_conflict(&myself->u.file.share,
openflags,
false);
if (FSAL_IS_ERROR(status)) {
PTHREAD_RWLOCK_unlock(&obj_hdl->lock);
return status;
}
/* Take the share reservation now by updating the
* counters.
*/
update_share_counters(&myself->u.file.share,
FSAL_O_CLOSED,
openflags);
PTHREAD_RWLOCK_unlock(&obj_hdl->lock);
} else {
/* We need to use the global fd to continue, and take
* the lock to protect it.
*/
my_fd = &hdl->u.file.fd;
PTHREAD_RWLOCK_wrlock(&obj_hdl->lock);
}
status = vfs_open_my_fd(myself, openflags, posix_flags, my_fd);
if (FSAL_IS_ERROR(status)) {
if (state == NULL) {
/* Release the lock taken above, and return
* since there is nothing to undo.
*/
PTHREAD_RWLOCK_unlock(&obj_hdl->lock);
return status;
} else {
/* Error - need to release the share */
goto undo_share;
}
}
if (createmode >= FSAL_EXCLUSIVE || truncated) {
/* Refresh the attributes */
struct stat stat;
retval = fstat(my_fd->fd, &stat);
if (retval == 0) {
LogFullDebug(COMPONENT_FSAL,
"New size = %" PRIx64,
stat.st_size);
} else {
if (errno == EBADF)
errno = ESTALE;
status = fsalstat(posix2fsal_error(errno),
errno);
}
/* Now check verifier for exclusive, but not for
* FSAL_EXCLUSIVE_9P.
*/
if (!FSAL_IS_ERROR(status) &&
createmode >= FSAL_EXCLUSIVE &&
createmode != FSAL_EXCLUSIVE_9P &&
!check_verifier_stat(&stat, verifier)) {
/* Verifier didn't match, return EEXIST */
status =
fsalstat(posix2fsal_error(EEXIST), EEXIST);
}
}
if (state == NULL) {
/* If no state, release the lock taken above and return
* status.
*/
PTHREAD_RWLOCK_unlock(&obj_hdl->lock);
return status;
}
if (!FSAL_IS_ERROR(status)) {
/* Return success. */
return status;
}
(void) vfs_close_my_fd(my_fd);
undo_share:
/* Can only get here with state not NULL and an error */
/* On error we need to release our share reservation
* and undo the update of the share counters.
* This can block over an I/O operation.
*/
PTHREAD_RWLOCK_wrlock(&obj_hdl->lock);
update_share_counters(&myself->u.file.share,
openflags,
FSAL_O_CLOSED);
PTHREAD_RWLOCK_unlock(&obj_hdl->lock);
return status;
}
/* In this path where we are opening by name, we can't check share
* reservation yet since we don't have an object_handle yet. If we
* indeed create the object handle (there is no race with another
* open by name), then there CAN NOT be a share conflict, otherwise
* the share conflict will be resolved when the object handles are
* merged.
*/
#ifdef ENABLE_VFS_DEBUG_ACL
if (createmode != FSAL_NO_CREATE) {
/* Need to ammend attributes for inherited ACL, these will be
* set later. We also need to test for permission to create
* since there might be an ACL.
*/
struct attrlist attrs;
fsal_accessflags_t access_type;
access_type = FSAL_MODE_MASK_SET(FSAL_W_OK) |
FSAL_ACE4_MASK_SET(FSAL_ACE_PERM_ADD_FILE);
status = obj_hdl->obj_ops.test_access(obj_hdl, access_type,
NULL, NULL, false);
if (FSAL_IS_ERROR(status))
return status;
fsal_prepare_attrs(&attrs, ATTR_ACL);
status = obj_hdl->obj_ops.getattrs(obj_hdl, &attrs);
if (FSAL_IS_ERROR(status))
return status;
status.major = fsal_inherit_acls(attrib_set, attrs.acl,
FSAL_ACE_FLAG_FILE_INHERIT);
/* Done with the attrs */
fsal_release_attrs(&attrs);
if (FSAL_IS_ERROR(status))
return status;
}
#endif /* ENABLE_VFS_DEBUG_ACL */
if (createmode != FSAL_NO_CREATE) {
/* Now add in O_CREAT and O_EXCL. */
posix_flags |= O_CREAT;
/* And if we are at least FSAL_GUARDED, do an O_EXCL create. */
if (createmode >= FSAL_GUARDED)
posix_flags |= O_EXCL;
/* Fetch the mode attribute to use in the openat system call. */
unix_mode = fsal2unix_mode(attrib_set->mode) &
~op_ctx->fsal_export->exp_ops.fs_umask(op_ctx->fsal_export);
/* Don't set the mode if we later set the attributes */
FSAL_UNSET_MASK(attrib_set->mask, ATTR_MODE);
}
if (createmode == FSAL_UNCHECKED && (attrib_set->mask != 0)) {
/* If we have FSAL_UNCHECKED and want to set more attributes
* than the mode, we attempt an O_EXCL create first, if that
* succeeds, then we will be allowed to set the additional
* attributes, otherwise, we don't know we created the file
* and this can NOT set the attributes.
*/
posix_flags |= O_EXCL;
}
dir_fd = vfs_fsal_open(myself, O_PATH | O_NOACCESS, &status.major);
if (dir_fd < 0)
return fsalstat(status.major, -dir_fd);
/** @todo: not sure what this accomplishes... */
retval = vfs_stat_by_handle(dir_fd, &stat);
if (retval < 0) {
retval = errno;
status = fsalstat(posix2fsal_error(retval), retval);
goto direrr;
}
/* Become the user because we are creating an object in this dir.
*/
if (createmode != FSAL_NO_CREATE)
fsal_set_credentials(op_ctx->creds);
if ((posix_flags & O_CREAT) != 0)
fd = openat(dir_fd, name, posix_flags, unix_mode);
else
fd = openat(dir_fd, name, posix_flags);
if (fd == -1 && errno == EEXIST && createmode == FSAL_UNCHECKED) {
/* We tried to create O_EXCL to set attributes and failed.
* Remove O_EXCL and retry. We still try O_CREAT again just in
* case file disappears out from under us.
*
* Note that because we have dropped O_EXCL, later on we will
* not assume we created the file, and thus will not set
* additional attributes. We don't need to separately track
* the condition of not wanting to set attributes.
*/
posix_flags &= ~O_EXCL;
fd = openat(dir_fd, name, posix_flags, unix_mode);
}
/* Preserve errno */
retval = errno;
/* If we were creating, restore credentials now. */
if (createmode != FSAL_NO_CREATE)
fsal_restore_ganesha_credentials();
if (fd < 0) {
status = fsalstat(posix2fsal_error(retval), retval);
goto direrr;
}
/* Remember if we were responsible for creating the file.
* Note that in an UNCHECKED retry we MIGHT have re-created the
* file and won't remember that. Oh well, so in that rare case we
* leak a partially created file if we have a subsequent error in here.
* Also notify caller to do permission check if we DID NOT create the
* file. Note it IS possible in the case of a race between an UNCHECKED
* open and an external unlink, we did create the file, but we will
* still force a permission check. Of course that permission check
* SHOULD succeed since we also won't set the mode the caller requested
* and the default file create permissions SHOULD allow the owner
* read/write.
*/
created = (posix_flags & O_EXCL) != 0;
*caller_perm_check = !created;
vfs_alloc_handle(fh);
retval = vfs_name_to_handle(dir_fd, obj_hdl->fs, name, fh);
if (retval < 0) {
retval = errno;
status = fsalstat(posix2fsal_error(retval), retval);
goto fileerr;
}
retval = fstat(fd, &stat);
if (retval < 0) {
retval = errno;
status = fsalstat(posix2fsal_error(retval), retval);
goto fileerr;
}
/* allocate an obj_handle and fill it up */
hdl = alloc_handle(dir_fd, fh, obj_hdl->fs, &stat, myself->handle, name,
op_ctx->fsal_export);
if (hdl == NULL) {
status = fsalstat(posix2fsal_error(ENOMEM), ENOMEM);
goto fileerr;
}
/* If we didn't have a state above, use the global fd. At this point,
* since we just created the global fd, no one else can have a
* reference to it, and thus we can mamnipulate unlocked which is
* handy since we can then call setattr2 which WILL take the lock
* without a double locking deadlock.
*/
if (my_fd == NULL)
my_fd = &hdl->u.file.fd;
my_fd->fd = fd;
my_fd->openflags = openflags;
*new_obj = &hdl->obj_handle;
if (created && attrib_set->mask != 0) {
/* Set attributes using our newly opened file descriptor as the
* share_fd if there are any left to set (mode and truncate
* have already been handled).
*
* Note that we only set the attributes if we were responsible
* for creating the file and we have attributes to set.
*
* Note if we have ENABLE_VFS_DEBUG_ACL an inherited ACL might
* be part of the attributes we are setting here.
*/
status = (*new_obj)->obj_ops.setattr2(*new_obj,
false,
state,
attrib_set);
if (FSAL_IS_ERROR(status)) {
/* Release the handle we just allocated. */
(*new_obj)->obj_ops.release(*new_obj);
*new_obj = NULL;
goto fileerr;
}
if (attrs_out != NULL) {
status = (*new_obj)->obj_ops.getattrs(*new_obj,
attrs_out);
if (FSAL_IS_ERROR(status) &&
(attrs_out->mask & ATTR_RDATTR_ERR) == 0) {
/* Get attributes failed and caller expected
* to get the attributes. Otherwise continue
* with attrs_out indicating ATTR_RDATTR_ERR.
*/
goto fileerr;
}
}
} else if (attrs_out != NULL) {
/* Since we haven't set any attributes other than what was set
* on create (if we even created), just use the stat results
* we used to create the fsal_obj_handle.
*/
posix2fsal_attributes(&stat, attrs_out);
/* Make sure ATTR_RDATTR_ERR is cleared on success. */
attrs_out->mask &= ~ATTR_RDATTR_ERR;
}
close(dir_fd);
if (state != NULL) {
/* Prepare to take the share reservation, but only if we are
* called with a valid state (if state is NULL the caller is
* a stateless create such as NFS v3 CREATE).
*/
/* This can block over an I/O operation. */
PTHREAD_RWLOCK_wrlock(&(*new_obj)->lock);
/* Take the share reservation now by updating the counters. */
update_share_counters(&hdl->u.file.share,
FSAL_O_CLOSED,
openflags);
PTHREAD_RWLOCK_unlock(&(*new_obj)->lock);
}
return fsalstat(ERR_FSAL_NO_ERROR, 0);
fileerr:
close(fd);
/* Delete the file if we actually created it. */
if (created)
unlinkat(dir_fd, name, 0);
direrr:
close(dir_fd);
return fsalstat(posix2fsal_error(retval), retval);
}
/**
* FSAL_open:
* Open a regular file for reading/writing its data content.
*
* \param filehandle (input):
* Handle of the file to be read/modified.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param openflags (input):
* Flags that indicates behavior for file opening and access.
* This is an inclusive OR of the following values
* ( such of them are not compatible) :
* - FSAL_O_RDONLY: opening file for reading only.
* - FSAL_O_RDWR: opening file for reading and writing.
* - FSAL_O_WRONLY: opening file for writting only.
* - FSAL_O_APPEND: always write at the end of the file.
* - FSAL_O_TRUNC: truncate the file to 0 on opening.
* \param file_descriptor (output):
* The file descriptor to be used for FSAL_read/write operations.
* \param file_attributes (optionnal input/output):
* Post operation attributes.
* 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).
*
* \return Major error codes:
* - ERR_FSAL_NO_ERROR: no error.
* - Another error code if an error occured during this call.
*/
fsal_status_t POSIXFSAL_open(fsal_handle_t * filehandle, /* IN */
fsal_op_context_t * context, /* IN */
fsal_openflags_t openflags, /* IN */
fsal_file_t * file_descriptor, /* OUT */
fsal_attrib_list_t * p_file_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * p_filehandle = (posixfsal_handle_t *) filehandle;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
posixfsal_file_t * p_file_descriptor = (posixfsal_file_t *) file_descriptor;
int rc, errsv;
fsal_status_t status;
fsal_path_t fsalpath;
struct stat buffstat;
#ifdef _FSAL_POSIX_USE_STREAM
char posix_flags[4]; /* stores r, r+, w, w+, a, or a+ */
#else
int posix_flags;
#endif
/* sanity checks.
* note : file_attributes is optional.
*/
if(!p_filehandle || !p_context || !p_file_descriptor)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_open);
status =
fsal_internal_getPathFromHandle(p_context, p_filehandle, 0, &fsalpath, &buffstat);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_open);
status =
fsal_internal_testAccess(p_context,
(openflags & FSAL_O_RDONLY ? FSAL_R_OK : FSAL_W_OK) |
FSAL_OWNER_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_open);
/* convert fsal open flags to posix open flags */
rc = fsal2posix_openflags(openflags, &posix_flags);
/* flags conflicts. */
if(rc)
{
LogEvent(COMPONENT_FSAL, "Invalid/conflicting flags : %#X", openflags);
Return(rc, 0, INDEX_FSAL_open);
}
TakeTokenFSCall();
#ifdef _FSAL_POSIX_USE_STREAM
p_file_descriptor->p_file = fopen(fsalpath.path, posix_flags);
errsv = errno;
ReleaseTokenFSCall();
if(!(p_file_descriptor->p_file))
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_open);
#else
p_file_descriptor->filefd = open(fsalpath.path, posix_flags);
errsv = errno;
ReleaseTokenFSCall();
#endif
/* set the read-only flag of the file descriptor */
p_file_descriptor->ro = openflags & FSAL_O_RDONLY;
/* output attributes */
if(p_file_attributes)
{
status = posix2fsal_attributes(&buffstat, p_file_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_file_attributes->asked_attributes);
FSAL_SET_MASK(p_file_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
Return(ERR_FSAL_NO_ERROR, errsv, INDEX_FSAL_open); /* use the error... */
}
/**
* FSAL_link:
* Create a hardlink.
*
* \param target_handle (input):
* Handle of the target object.
* \param dir_handle (input):
* Pointer to the directory handle where
* the hardlink is to be created.
* \param p_link_name (input):
* Pointer to the name of the hardlink 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 attributes (optionnal input/output):
* The post_operation attributes of the linked object.
* 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 POSIXFSAL_link(fsal_handle_t * target_handle, /* IN */
fsal_handle_t * dir_handle, /* IN */
fsal_name_t * p_link_name, /* IN */
fsal_op_context_t * context, /* IN */
fsal_attrib_list_t * p_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * p_target_handle = (posixfsal_handle_t *) target_handle;
posixfsal_handle_t * p_dir_handle = (posixfsal_handle_t *) dir_handle;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
int rc, errsv;
fsal_status_t status;
fsal_path_t fsalpath_old, fsalpath_new;
fsal_posixdb_fileinfo_t info;
posixfsal_handle_t newhandle;
struct stat buffstat, buffstat_dir;
/* sanity checks.
* note : attributes is optional.
*/
if(!p_target_handle || !p_dir_handle || !p_context || !p_link_name)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_link);
/* Tests if hardlinking is allowed by configuration. */
if(!global_fs_info.link_support)
Return(ERR_FSAL_NOTSUPP, 0, INDEX_FSAL_link);
LogFullDebug(COMPONENT_FSAL, "linking %llu/%i to %llu.%i/%s \n", p_target_handle->data.id,
p_target_handle->data.ts, p_dir_handle->data.id, p_dir_handle->data.ts, p_link_name->name);
/* get the old path */
status =
fsal_internal_getPathFromHandle(p_context, p_target_handle, 0, &fsalpath_old,
&buffstat);
if(FSAL_IS_ERROR(status))
{
Return(status.major, status.minor, INDEX_FSAL_link);
}
/* build the destination path and check permissions on the directory */
status =
fsal_internal_getPathFromHandle(p_context, p_dir_handle, 1, &fsalpath_new,
&buffstat_dir);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_link);
status =
fsal_internal_testAccess(p_context, FSAL_W_OK | FSAL_X_OK, &buffstat_dir, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_link);
status = fsal_internal_appendFSALNameToFSALPath(&fsalpath_new, p_link_name);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_link);
/* Create the link on the filesystem */
TakeTokenFSCall();
rc = link(fsalpath_old.path, fsalpath_new.path);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_link);
/* add the link in the database */
buffstat.st_nlink++; /* avoid to stat the new file */
status = fsal_internal_posix2posixdb_fileinfo(&buffstat, &info);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_link);
if(FSAL_IS_ERROR
(status =
fsal_internal_posixdb_add_entry(p_context->p_conn, p_link_name, &info,
p_dir_handle, &newhandle)))
Return(status.major, status.minor, INDEX_FSAL_link);
/* optionnaly get attributes */
if(p_attributes)
{
TakeTokenFSCall();
rc = lstat(fsalpath_old.path, &buffstat);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
{
status.major = posix2fsal_error(errsv);
status.minor = errsv;
}
else
{
status = posix2fsal_attributes(&buffstat, p_attributes);
}
/* on error, we set a special bit in the mask. */
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(p_attributes->asked_attributes);
FSAL_SET_MASK(p_attributes->asked_attributes, FSAL_ATTR_RDATTR_ERR);
}
}
/* OK */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_link);
}
fsal_status_t CEPHFSAL_lookupPath(fsal_path_t * path,
fsal_op_context_t * extcontext,
fsal_handle_t * exthandle,
fsal_attrib_list_t * object_attributes)
{
int rc;
struct stat st;
fsal_status_t status;
cephfsal_handle_t* handle = (cephfsal_handle_t*) exthandle;
cephfsal_op_context_t* context = (cephfsal_op_context_t*) extcontext;
char str[FSAL_MAX_PATH_LEN];
struct ceph_mount_info *cmount = context->export_context->cmount;
/* sanity checks
* note : object_attributes is optionnal
* parent_directory_handle may be null for getting FS root.
*/
if(!path || !context || !handle)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookupPath);
memset(handle, 0, sizeof(cephfsal_handle_t));
FSAL_path2str(path, str, FSAL_MAX_PATH_LEN);
/* retrieves root handle */
if((strcmp(str, "/") == 0))
{
VINODE(handle).ino.val = CEPH_INO_ROOT;
VINODE(handle).snapid.val = CEPH_NOSNAP;
if(object_attributes)
{
status = CEPHFSAL_getattrs(exthandle, extcontext,
object_attributes);
/* On error, we set a flag in the returned attributes */
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes,
FSAL_ATTR_RDATTR_ERR);
}
}
}
else /* this is a real lookup(parent, name) */
{
rc = ceph_ll_walk(cmount, str, &st);
if(rc)
{
Return(posix2fsal_error(rc), 0, INDEX_FSAL_lookupPath);
}
stat2fsal_fh(cmount, &st, handle);
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_create);
if(object_attributes)
{
status = posix2fsal_attributes(&st, object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes,
FSAL_ATTR_RDATTR_ERR);
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_getattrs);
}
}
}
/* lookup complete ! */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_lookup);
}
/**
* FSAL_create:
* Create a regular file.
*
* \param parent_directory_handle (input):
* Handle of the parent directory where the file is to be created.
* \param p_filename (input):
* Pointer to the name of the file to be created.
* \param cred (input):
* Authentication context for the operation (user,...).
* \param accessmode (input):
* Mode for the file 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 file.
* \param object_attributes (optional input/output):
* The attributes of the created file.
* 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 occurred.
*/
fsal_status_t POSIXFSAL_create(fsal_handle_t * parent_directory_handle, /* IN */
fsal_name_t * p_filename, /* IN */
fsal_op_context_t * context, /* IN */
fsal_accessmode_t accessmode, /* IN */
fsal_handle_t * object_handle, /* OUT */
fsal_attrib_list_t * p_object_attributes /* [ IN/OUT ] */
)
{
posixfsal_handle_t * p_parent_directory_handle
= (posixfsal_handle_t *) parent_directory_handle;
posixfsal_op_context_t * p_context = (posixfsal_op_context_t *) context;
posixfsal_handle_t * p_object_handle = (posixfsal_handle_t *) p_object_handle;
int rc, fd, errsv;
int setgid_bit = 0;
fsal_status_t status;
fsal_path_t fsalpath;
struct stat buffstat;
fsal_posixdb_fileinfo_t info;
mode_t unix_mode;
/* sanity checks.
* note : object_attributes is optional.
*/
if(!p_parent_directory_handle || !p_context || !p_object_handle || !p_filename)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_create);
/* convert fsal mode to unix mode. */
unix_mode = fsal2unix_mode(accessmode);
/* Apply umask */
unix_mode = unix_mode & ~global_fs_info.umask;
LogFullDebug(COMPONENT_FSAL, "Creation mode: 0%o", accessmode);
/* build the destination path */
status =
fsal_internal_getPathFromHandle(p_context, p_parent_directory_handle, 1, &fsalpath,
&buffstat);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_create);
/* Check the user can write in the directory, and check the setgid bit on the directory */
if(buffstat.st_mode & S_ISGID)
setgid_bit = 1;
status = fsal_internal_testAccess(p_context, FSAL_W_OK | FSAL_X_OK, &buffstat, NULL);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_create);
status = fsal_internal_appendFSALNameToFSALPath(&fsalpath, p_filename);
if(FSAL_IS_ERROR(status))
Return(status.major, status.minor, INDEX_FSAL_create);
/* call to API */
TakeTokenFSCall();
/* create the file */
fd = open(fsalpath.path, O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, unix_mode); /* error if the file already exists */
errsv = errno;
if(fd == -1)
goto releaseToken;
/* close the file descriptor */
rc = close(fd);
errsv = errno;
if(rc)
goto releaseToken;
/* stat the new file */
rc = lstat(fsalpath.path, &buffstat);
errsv = errno;
releaseToken:
ReleaseTokenFSCall();
if(fd == -1 || rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_create);
/* add the file to the database */
if(FSAL_IS_ERROR(status = fsal_internal_posix2posixdb_fileinfo(&buffstat, &info)))
Return(status.major, status.minor, INDEX_FSAL_create);
if(FSAL_IS_ERROR
(status =
fsal_internal_posixdb_add_entry(p_context->p_conn, p_filename, &info,
p_parent_directory_handle, p_object_handle)))
Return(status.major, status.minor, INDEX_FSAL_create);
/* the file has been created */
/* chown the file to the current user */
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 = lchown(fsalpath.path, p_context->credential.user,
setgid_bit ? -1 : (int)p_context->credential.group);
errsv = errno;
ReleaseTokenFSCall();
if(rc)
Return(posix2fsal_error(errsv), errsv, INDEX_FSAL_create);
buffstat.st_uid = p_context->credential.user;
buffstat.st_gid = p_context->credential.group;
}
/* add the file to the database */
if(p_object_attributes)
{
/* convert POSIX attributes to fsal attributes */
status = posix2fsal_attributes(&buffstat, 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_create);
}
/**
* 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 Major error codes :
* - ERR_FSAL_NO_ERROR (no error)
* - ERR_FSAL_STALE (parent_directory_handle does not address an existing object)
* - ERR_FSAL_NOTDIR (parent_directory_handle does not address a directory)
* - ERR_FSAL_NOENT (the object designated by p_filename does not exist)
* - ERR_FSAL_XDEV (tried to operate a lookup on a filesystem junction.
* Use FSAL_lookupJunction instead)
* - ERR_FSAL_FAULT (a NULL pointer was passed as mandatory argument)
* - Other error codes can be returned :
* ERR_FSAL_ACCESS, ERR_FSAL_IO, ...
*
*/
fsal_status_t CEPHFSAL_lookup(fsal_handle_t * extparent,
fsal_name_t * filename,
fsal_op_context_t * extcontext,
fsal_handle_t * exthandle,
fsal_attrib_list_t * object_attributes)
{
int rc;
struct stat st;
fsal_status_t status;
cephfsal_handle_t* parent = (cephfsal_handle_t*) extparent;
cephfsal_op_context_t* context = (cephfsal_op_context_t*) extcontext;
cephfsal_handle_t* handle = (cephfsal_handle_t*) exthandle;
char str[FSAL_MAX_NAME_LEN+1];
struct ceph_mount_info *cmount = context->export_context->cmount;
/* sanity checks
* note : object_attributes is optionnal
* parent_directory_handle may be null for getting FS root.
*/
if(!handle || !context)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookup);
memset(handle, 0, sizeof(cephfsal_handle_t));
/* retrieves root handle */
if(!parent)
{
/* check that filename is NULL,
* else, parent should not
* be NULL.
*/
if(filename != NULL)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookup);
/* Ceph seems to have a constant identifying the root inode.
Possible source of bugs, so check here if trouble */
VINODE(handle).ino.val = CEPH_INO_ROOT;
VINODE(handle).snapid.val = CEPH_NOSNAP;
if(object_attributes)
{
status = CEPHFSAL_getattrs(exthandle, extcontext, object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes,
FSAL_ATTR_RDATTR_ERR);
}
}
}
else /* this is a real lookup(parent, name) */
{
/* the filename should not be null */
if(filename == NULL)
Return(ERR_FSAL_FAULT, 0, INDEX_FSAL_lookup);
FSAL_name2str(filename, str, FSAL_MAX_NAME_LEN);
/* Ceph returns POSIX errors, so let's use them */
rc = ceph_ll_lookup(cmount,
VINODE(parent), str, &st,
FSAL_OP_CONTEXT_TO_UID(context),
FSAL_OP_CONTEXT_TO_GID(context));
if(rc)
{
Return(posix2fsal_error(rc), 0, INDEX_FSAL_lookup);
}
rc = stat2fsal_fh(cmount, &st, handle);
if (rc < 0)
Return(posix2fsal_error(rc), 0, INDEX_FSAL_create);
if(object_attributes)
{
/* convert attributes */
status = posix2fsal_attributes(&st, object_attributes);
if(FSAL_IS_ERROR(status))
{
FSAL_CLEAR_MASK(object_attributes->asked_attributes);
FSAL_SET_MASK(object_attributes->asked_attributes,
FSAL_ATTR_RDATTR_ERR);
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_lookup);
}
}
}
/* lookup complete ! */
Return(ERR_FSAL_NO_ERROR, 0, INDEX_FSAL_lookup);
}
