static errno_t
fuse_vfsop_getattr(mount_t mp, struct vfs_attr *attr, vfs_context_t context)
{
int err = 0;
bool deading = false, faking = false;
struct fuse_dispatcher fdi;
struct fuse_statfs_out *fsfo;
struct fuse_statfs_out faked;
struct fuse_data *data;
fuse_trace_printf_vfsop();
data = fuse_get_mpdata(mp);
if (!data) {
panic("fuse4x: no private data for mount point?");
}
if (!(data->dataflags & FSESS_INITED)) {
// coreservices process requests ATTR_VOL_CAPABILITIES on the mountpoint right before
// returning from mount() syscall. We need to fake the output because daemon might
// not be ready to response yet (and deadlock will happen).
faking = true;
goto dostatfs;
}
fdisp_init(&fdi, 0);
fdisp_make(&fdi, FUSE_STATFS, mp, FUSE_ROOT_ID, context);
if ((err = fdisp_wait_answ(&fdi))) {
// If we cannot communicate with the daemon (most likely because
// it's dead), we still want to portray that we are a bonafide
// file system so that we can be gracefully unmounted.
if (err == ENOTCONN) {
deading = faking = true;
goto dostatfs;
}
return err;
}
dostatfs:
if (faking) {
bzero(&faked, sizeof(faked));
fsfo = &faked;
} else {
fsfo = fdi.answ;
}
if (fsfo->st.bsize == 0) {
fsfo->st.bsize = FUSE_DEFAULT_IOSIZE;
}
if (fsfo->st.frsize == 0) {
fsfo->st.frsize = FUSE_DEFAULT_BLOCKSIZE;
}
/* optimal transfer block size; will go into f_iosize in the kernel */
fsfo->st.bsize = fuse_round_size(fsfo->st.bsize,
FUSE_MIN_IOSIZE, FUSE_MAX_IOSIZE);
/* file system fragment size; will go into f_bsize in the kernel */
fsfo->st.frsize = fuse_round_size(fsfo->st.frsize,
FUSE_MIN_BLOCKSIZE, FUSE_MAX_BLOCKSIZE);
/* We must have: f_iosize >= f_bsize (fsfo->st.bsize >= fsfo->st_frsize) */
if (fsfo->st.bsize < fsfo->st.frsize) {
fsfo->st.bsize = fsfo->st.frsize;
}
/*
* TBD: Possibility:
*
* For actual I/O to fuse4x's "virtual" storage device, we use
* data->blocksize and data->iosize. These are really meant to be
* constant across the lifetime of a single mount. If necessary, we
* can experiment by updating the mount point's stat with the frsize
* and bsize values we come across here.
*/
/*
* FUSE user daemon will (might) give us this:
*
* __u64 blocks; // total data blocks in the file system
* __u64 bfree; // free blocks in the file system
* __u64 bavail; // free blocks available to non-superuser
* __u64 files; // total file nodes in the file system
* __u64 ffree; // free file nodes in the file system
* __u32 bsize; // preferred/optimal file system block size
* __u32 namelen; // maximum length of filenames
* __u32 frsize; // fundamental file system block size
*
* On Mac OS X, we will map this data to struct vfs_attr as follows:
*
* Mac OS X FUSE
* -------- ----
* uint64_t f_supported <- // handled here
* uint64_t f_active <- // handled here
* uint64_t f_objcount <- -
* uint64_t f_filecount <- files
* uint64_t f_dircount <- -
* uint32_t f_bsize <- frsize
* size_t f_iosize <- bsize
* uint64_t f_blocks <- blocks
* uint64_t f_bfree <- bfree
* uint64_t f_bavail <- bavail
* uint64_t f_bused <- blocks - bfree
* uint64_t f_files <- files
* uint64_t f_ffree <- ffree
* fsid_t f_fsid <- // handled elsewhere
* uid_t f_owner <- // handled elsewhere
* ... capabilities <- // handled here
* ... attributes <- // handled here
* f_create_time <- -
* f_modify_time <- -
* f_access_time <- -
* f_backup_time <- -
* uint32_t f_fssubtype <- // daemon provides
* char *f_vol_name <- // handled here
* uint16_t f_signature <- // handled here
* uint16_t f_carbon_fsid <- // handled here
*/
VFSATTR_RETURN(attr, f_filecount, fsfo->st.files);
VFSATTR_RETURN(attr, f_bsize, fsfo->st.frsize);
VFSATTR_RETURN(attr, f_iosize, fsfo->st.bsize);
VFSATTR_RETURN(attr, f_blocks, fsfo->st.blocks);
VFSATTR_RETURN(attr, f_bfree, fsfo->st.bfree);
VFSATTR_RETURN(attr, f_bavail, fsfo->st.bavail);
VFSATTR_RETURN(attr, f_bused, (fsfo->st.blocks - fsfo->st.bfree));
VFSATTR_RETURN(attr, f_files, fsfo->st.files);
VFSATTR_RETURN(attr, f_ffree, fsfo->st.ffree);
/* f_fsid and f_owner handled elsewhere. */
/* Handle capabilities and attributes. */
handle_capabilities_and_attributes(mp, attr);
VFSATTR_RETURN(attr, f_create_time, kZeroTime);
VFSATTR_RETURN(attr, f_modify_time, kZeroTime);
VFSATTR_RETURN(attr, f_access_time, kZeroTime);
VFSATTR_RETURN(attr, f_backup_time, kZeroTime);
if (deading) {
VFSATTR_RETURN(attr, f_fssubtype, (uint32_t)FUSE_FSSUBTYPE_INVALID);
} else {
VFSATTR_RETURN(attr, f_fssubtype, data->fssubtype);
}
/* Daemon needs to pass this. */
if (VFSATTR_IS_ACTIVE(attr, f_vol_name)) {
if (data->volname[0] != 0) {
strncpy(attr->f_vol_name, data->volname, MAXPATHLEN);
attr->f_vol_name[MAXPATHLEN - 1] = 0;
VFSATTR_SET_SUPPORTED(attr, f_vol_name);
}
}
VFSATTR_RETURN(attr, f_signature, OSSwapBigToHostInt16(FUSEFS_SIGNATURE));
VFSATTR_RETURN(attr, f_carbon_fsid, 0);
if (!faking)
fuse_ticket_drop(fdi.tick);
return 0;
}
static errno_t
fuse_vfsop_setattr(mount_t mp, struct vfs_attr *fsap, vfs_context_t context)
{
int error = 0;
fuse_trace_printf_vfsop();
kauth_cred_t cred = vfs_context_ucred(context);
if (!fuse_vfs_context_issuser(context) &&
(kauth_cred_getuid(cred) != vfs_statfs(mp)->f_owner)) {
return EACCES;
}
struct fuse_data *data = fuse_get_mpdata(mp);
if (VFSATTR_IS_ACTIVE(fsap, f_vol_name)) {
if (!fuse_implemented(data, FSESS_NOIMPLBIT(SETVOLNAME))) {
error = ENOTSUP;
goto out;
}
if (fsap->f_vol_name[0] == 0) {
error = EINVAL;
goto out;
}
size_t namelen = strlen(fsap->f_vol_name);
if (namelen >= MAXPATHLEN) {
error = ENAMETOOLONG;
goto out;
}
vnode_t root_vp;
error = fuse_vfsop_root(mp, &root_vp, context);
if (error) {
goto out;
}
struct fuse_dispatcher fdi;
fdisp_init(&fdi, namelen + 1);
fdisp_make_vp(&fdi, FUSE_SETVOLNAME, root_vp, context);
memcpy((char *)fdi.indata, fsap->f_vol_name, namelen);
((char *)fdi.indata)[namelen] = '\0';
if (!(error = fdisp_wait_answ(&fdi))) {
fuse_ticket_drop(fdi.tick);
}
(void)vnode_put(root_vp);
if (error) {
if (error == ENOSYS) {
error = ENOTSUP;
fuse_clear_implemented(data, FSESS_NOIMPLBIT(SETVOLNAME));
}
goto out;
}
copystr(fsap->f_vol_name, data->volname, MAXPATHLEN - 1, &namelen);
bzero(data->volname + namelen, MAXPATHLEN - namelen);
VFSATTR_SET_SUPPORTED(fsap, f_vol_name);
}
out:
return error;
}
static void
handle_capabilities_and_attributes(mount_t mp, struct vfs_attr *attr)
{
struct fuse_data *data = fuse_get_mpdata(mp);
if (!data) {
panic("fuse4x: no private data for mount point?");
}
attr->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] = 0
// | VOL_CAP_FMT_PERSISTENTOBJECTIDS
| VOL_CAP_FMT_SYMBOLICLINKS
/*
* Note that we don't really have hard links in a fuse4x file system
* unless the user file system daemon provides persistent/consistent
* inode numbers. Maybe instead of returning the "wrong" answer here
* we should just deny knowledge of this capability in the valid bits
* below.
*/
| VOL_CAP_FMT_HARDLINKS
// | VOL_CAP_FMT_JOURNAL
// | VOL_CAP_FMT_JOURNAL_ACTIVE
| VOL_CAP_FMT_NO_ROOT_TIMES
// | VOL_CAP_FMT_SPARSE_FILES
// | VOL_CAP_FMT_ZERO_RUNS
// | VOL_CAP_FMT_CASE_SENSITIVE
| VOL_CAP_FMT_CASE_PRESERVING
| VOL_CAP_FMT_FAST_STATFS
| VOL_CAP_FMT_2TB_FILESIZE
// | VOL_CAP_FMT_OPENDENYMODES
// | VOL_CAP_FMT_HIDDEN_FILES
// | VOL_CAP_FMT_PATH_FROM_ID
;
attr->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] = 0
| VOL_CAP_FMT_PERSISTENTOBJECTIDS
| VOL_CAP_FMT_SYMBOLICLINKS
| VOL_CAP_FMT_HARDLINKS
| VOL_CAP_FMT_JOURNAL
| VOL_CAP_FMT_JOURNAL_ACTIVE
| VOL_CAP_FMT_NO_ROOT_TIMES
| VOL_CAP_FMT_SPARSE_FILES
| VOL_CAP_FMT_ZERO_RUNS
| VOL_CAP_FMT_CASE_SENSITIVE
| VOL_CAP_FMT_CASE_PRESERVING
| VOL_CAP_FMT_FAST_STATFS
| VOL_CAP_FMT_2TB_FILESIZE
| VOL_CAP_FMT_OPENDENYMODES
| VOL_CAP_FMT_HIDDEN_FILES
| VOL_CAP_FMT_PATH_FROM_ID
;
attr->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] = 0
// | VOL_CAP_INT_SEARCHFS
| VOL_CAP_INT_ATTRLIST
// | VOL_CAP_INT_NFSEXPORT
// | VOL_CAP_INT_READDIRATTR
// | VOL_CAP_INT_EXCHANGEDATA
// | VOL_CAP_INT_COPYFILE
// | VOL_CAP_INT_ALLOCATE
// | VOL_CAP_INT_VOL_RENAME
| VOL_CAP_INT_ADVLOCK
| VOL_CAP_INT_FLOCK
| VOL_CAP_INT_EXTENDED_SECURITY
// | VOL_CAP_INT_USERACCESS
// | VOL_CAP_INT_MANLOCK
// | VOL_CAP_INT_EXTENDED_ATTR
// | VOL_CAP_INT_NAMEDSTREAMS
;
if (data->dataflags & FSESS_NATIVE_XATTR) {
attr->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] |=
VOL_CAP_INT_EXTENDED_ATTR;
}
/* Don't set the EXCHANGEDATA capability if it's known not to be
* implemented in the FUSE daemon. */
if (fuse_implemented(data, FSESS_NOIMPLBIT(EXCHANGE))) {
attr->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] |=
VOL_CAP_INT_EXCHANGEDATA;
}
attr->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] = 0
| VOL_CAP_INT_SEARCHFS
| VOL_CAP_INT_ATTRLIST
| VOL_CAP_INT_NFSEXPORT
| VOL_CAP_INT_READDIRATTR
| VOL_CAP_INT_EXCHANGEDATA
| VOL_CAP_INT_COPYFILE
| VOL_CAP_INT_ALLOCATE
| VOL_CAP_INT_VOL_RENAME
| VOL_CAP_INT_ADVLOCK
| VOL_CAP_INT_FLOCK
| VOL_CAP_INT_EXTENDED_SECURITY
| VOL_CAP_INT_USERACCESS
| VOL_CAP_INT_MANLOCK
| VOL_CAP_INT_EXTENDED_ATTR
| VOL_CAP_INT_NAMEDSTREAMS
;
attr->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
attr->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
attr->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
attr->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
VFSATTR_SET_SUPPORTED(attr, f_capabilities);
attr->f_attributes.validattr.commonattr = 0
| ATTR_CMN_NAME
| ATTR_CMN_DEVID
| ATTR_CMN_FSID
| ATTR_CMN_OBJTYPE
// | ATTR_CMN_OBJTAG
| ATTR_CMN_OBJID
// | ATTR_CMN_OBJPERMANENTID
| ATTR_CMN_PAROBJID
// | ATTR_CMN_SCRIPT
// | ATTR_CMN_CRTIME
| ATTR_CMN_MODTIME
// | ATTR_CMN_CHGTIME
// | ATTR_CMN_ACCTIME
// | ATTR_CMN_BKUPTIME
// | ATTR_CMN_FNDRINFO
| ATTR_CMN_OWNERID
| ATTR_CMN_GRPID
| ATTR_CMN_ACCESSMASK
| ATTR_CMN_FLAGS
// | ATTR_CMN_USERACCESS
| ATTR_CMN_EXTENDED_SECURITY
// | ATTR_CMN_UUID
// | ATTR_CMN_GRPUUID
// | ATTR_CMN_FILEID
// | ATTR_CMN_PARENTID
;
attr->f_attributes.validattr.volattr = 0
| ATTR_VOL_FSTYPE
| ATTR_VOL_SIGNATURE
| ATTR_VOL_SIZE
| ATTR_VOL_SPACEFREE
| ATTR_VOL_SPACEAVAIL
// | ATTR_VOL_MINALLOCATION
// | ATTR_VOL_ALLOCATIONCLUMP
| ATTR_VOL_IOBLOCKSIZE
// | ATTR_VOL_OBJCOUNT
| ATTR_VOL_FILECOUNT
// | ATTR_VOL_DIRCOUNT
// | ATTR_VOL_MAXOBJCOUNT
| ATTR_VOL_MOUNTPOINT
| ATTR_VOL_NAME
| ATTR_VOL_MOUNTFLAGS
| ATTR_VOL_MOUNTEDDEVICE
// | ATTR_VOL_ENCODINGSUSED
| ATTR_VOL_CAPABILITIES
| ATTR_VOL_ATTRIBUTES
// | ATTR_VOL_INFO
;
attr->f_attributes.validattr.dirattr = 0
| ATTR_DIR_LINKCOUNT
// | ATTR_DIR_ENTRYCOUNT
// | ATTR_DIR_MOUNTSTATUS
;
attr->f_attributes.validattr.fileattr = 0
| ATTR_FILE_LINKCOUNT
| ATTR_FILE_TOTALSIZE
| ATTR_FILE_ALLOCSIZE
| ATTR_FILE_IOBLOCKSIZE
| ATTR_FILE_DEVTYPE
// | ATTR_FILE_FORKCOUNT
// | ATTR_FILE_FORKLIST
| ATTR_FILE_DATALENGTH
| ATTR_FILE_DATAALLOCSIZE
// | ATTR_FILE_RSRCLENGTH
// | ATTR_FILE_RSRCALLOCSIZE
;
attr->f_attributes.validattr.forkattr = 0;
// | ATTR_FORK_TOTALSIZE
// | ATTR_FORK_ALLOCSIZE
;
// Handle some special cases
if (!(data->dataflags & FSESS_CASE_INSENSITIVE)) {
attr->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] |=
VOL_CAP_FMT_CASE_SENSITIVE;
}
/*
if (data->dataflags & FSESS_VOL_RENAME) {
attr->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] |=
VOL_CAP_INT_VOL_RENAME;
} else {
fuse_clear_implemented(data, FSESS_NOIMPLBIT(SETVOLNAME));
}
*/
/* Not yet. */
fuse_clear_implemented(data, FSESS_NOIMPLBIT(SETVOLNAME));
if (data->dataflags & FSESS_XTIMES) {
attr->f_attributes.validattr.commonattr |=
(ATTR_CMN_BKUPTIME | ATTR_CMN_CHGTIME | ATTR_CMN_CRTIME);
} else {
fuse_clear_implemented(data, FSESS_NOIMPLBIT(GETXTIMES));
}
// All attributes that we do support, we support natively.
attr->f_attributes.nativeattr.commonattr = \
attr->f_attributes.validattr.commonattr;
attr->f_attributes.nativeattr.volattr = \
attr->f_attributes.validattr.volattr;
attr->f_attributes.nativeattr.dirattr = \
attr->f_attributes.validattr.dirattr;
attr->f_attributes.nativeattr.fileattr = \
attr->f_attributes.validattr.fileattr;
attr->f_attributes.nativeattr.forkattr = \
attr->f_attributes.validattr.forkattr;
VFSATTR_SET_SUPPORTED(attr, f_attributes);
}
static int
zfs_vfs_getattr(struct mount *mp, struct vfs_attr *fsap, __unused vfs_context_t context)
{
zfsvfs_t *zfsvfs = vfs_fsprivate(mp);
uint64_t refdbytes, availbytes, usedobjs, availobjs;
ZFS_ENTER(zfsvfs);
dmu_objset_space(zfsvfs->z_os,
&refdbytes, &availbytes, &usedobjs, &availobjs);
VFSATTR_RETURN(fsap, f_objcount, usedobjs);
VFSATTR_RETURN(fsap, f_maxobjcount, 0x7fffffffffffffff);
/*
* Carbon depends on f_filecount and f_dircount so
* make up some values based on total objects.
*/
VFSATTR_RETURN(fsap, f_filecount, usedobjs - (usedobjs / 4));
VFSATTR_RETURN(fsap, f_dircount, usedobjs / 4);
/*
* The underlying storage pool actually uses multiple block sizes.
* We report the fragsize as the smallest block size we support,
* and we report our blocksize as the filesystem's maximum blocksize.
*/
VFSATTR_RETURN(fsap, f_bsize, 1UL << SPA_MINBLOCKSHIFT);
VFSATTR_RETURN(fsap, f_iosize, zfsvfs->z_max_blksz);
/*
* The following report "total" blocks of various kinds in the
* file system, but reported in terms of f_frsize - the
* "fragment" size.
*/
VFSATTR_RETURN(fsap, f_blocks,
(u_int64_t)((refdbytes + availbytes) >> SPA_MINBLOCKSHIFT));
VFSATTR_RETURN(fsap, f_bfree, (u_int64_t)(availbytes >> SPA_MINBLOCKSHIFT));
VFSATTR_RETURN(fsap, f_bavail, fsap->f_bfree); /* no root reservation */
VFSATTR_RETURN(fsap, f_bused, fsap->f_blocks - fsap->f_bfree);
/*
* statvfs() should really be called statufs(), because it assumes
* static metadata. ZFS doesn't preallocate files, so the best
* we can do is report the max that could possibly fit in f_files,
* and that minus the number actually used in f_ffree.
* For f_ffree, report the smaller of the number of object available
* and the number of blocks (each object will take at least a block).
*/
VFSATTR_RETURN(fsap, f_ffree, (u_int64_t)MIN(availobjs, fsap->f_bfree));
VFSATTR_RETURN(fsap, f_files, fsap->f_ffree + usedobjs);
#if 0
statp->f_flag = vf_to_stf(vfsp->vfs_flag);
#endif
if (VFSATTR_IS_ACTIVE(fsap, f_fsid)) {
VFSATTR_RETURN(fsap, f_fsid, vfs_statfs(mp)->f_fsid);
}
if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
bcopy(&zfs_capabilities, &fsap->f_capabilities, sizeof (zfs_capabilities));
VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
}
if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
bcopy(&zfs_attributes, &fsap->f_attributes.validattr, sizeof (zfs_attributes));
bcopy(&zfs_attributes, &fsap->f_attributes.nativeattr, sizeof (zfs_attributes));
VFSATTR_SET_SUPPORTED(fsap, f_attributes);
}
if (VFSATTR_IS_ACTIVE(fsap, f_create_time)) {
dmu_objset_stats_t dmu_stat;
dmu_objset_fast_stat(zfsvfs->z_os, &dmu_stat);
fsap->f_create_time.tv_sec = dmu_stat.dds_creation_time;
fsap->f_create_time.tv_nsec = 0;
VFSATTR_SET_SUPPORTED(fsap, f_create_time);
}
if (VFSATTR_IS_ACTIVE(fsap, f_modify_time)) {
if (zfsvfs->z_mtime_vp != NULL) {
znode_t *mzp;
mzp = VTOZ(zfsvfs->z_mtime_vp);
ZFS_TIME_DECODE(&fsap->f_modify_time, mzp->z_phys->zp_mtime);
} else {
fsap->f_modify_time.tv_sec = 0;
fsap->f_modify_time.tv_nsec = 0;
}
VFSATTR_SET_SUPPORTED(fsap, f_modify_time);
}
/*
* For Carbon compatibility, pretend to support this legacy/unused
* attribute
*/
if (VFSATTR_IS_ACTIVE(fsap, f_backup_time)) {
fsap->f_backup_time.tv_sec = 0;
fsap->f_backup_time.tv_nsec = 0;
VFSATTR_SET_SUPPORTED(fsap, f_backup_time);
}
if (VFSATTR_IS_ACTIVE(fsap, f_vol_name)) {
spa_t *spa = dmu_objset_spa(zfsvfs->z_os);
spa_config_enter(spa, RW_READER, FTAG);
strlcpy(fsap->f_vol_name, spa_name(spa), MAXPATHLEN);
spa_config_exit(spa, FTAG);
VFSATTR_SET_SUPPORTED(fsap, f_vol_name);
}
VFSATTR_RETURN(fsap, f_fssubtype, 0);
VFSATTR_RETURN(fsap, f_signature, 0x5a21); /* 'Z!' */
VFSATTR_RETURN(fsap, f_carbon_fsid, 0);
ZFS_EXIT(zfsvfs);
return (0);
}
static int
devfs_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, __unused vfs_context_t ctx)
{
VFSATTR_RETURN(fsap, f_objcount, devfs_stats.nodes);
VFSATTR_RETURN(fsap, f_maxobjcount, devfs_stats.nodes);
VFSATTR_RETURN(fsap, f_bsize, 512);
VFSATTR_RETURN(fsap, f_iosize, 512);
if (VFSATTR_IS_ACTIVE(fsap, f_blocks) || VFSATTR_IS_ACTIVE(fsap, f_bused)) {
fsap->f_blocks = (devfs_stats.mounts * sizeof(struct devfsmount)
+ devfs_stats.nodes * sizeof(devnode_t)
+ devfs_stats.entries * sizeof(devdirent_t)
+ devfs_stats.stringspace
) / fsap->f_bsize;
fsap->f_bused = fsap->f_blocks;
VFSATTR_SET_SUPPORTED(fsap, f_blocks);
VFSATTR_SET_SUPPORTED(fsap, f_bused);
}
VFSATTR_RETURN(fsap, f_bfree, 0);
VFSATTR_RETURN(fsap, f_bavail, 0);
VFSATTR_RETURN(fsap, f_files, devfs_stats.nodes);
VFSATTR_RETURN(fsap, f_ffree, 0);
VFSATTR_RETURN(fsap, f_fssubtype, 0);
if (VFSATTR_IS_ACTIVE(fsap, f_capabilities)) {
fsap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] =
VOL_CAP_FMT_SYMBOLICLINKS |
VOL_CAP_FMT_HARDLINKS |
VOL_CAP_FMT_NO_ROOT_TIMES |
VOL_CAP_FMT_CASE_SENSITIVE |
VOL_CAP_FMT_CASE_PRESERVING |
VOL_CAP_FMT_FAST_STATFS |
VOL_CAP_FMT_2TB_FILESIZE |
VOL_CAP_FMT_HIDDEN_FILES;
fsap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] =
VOL_CAP_INT_ATTRLIST ;
fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
fsap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
fsap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] =
VOL_CAP_FMT_PERSISTENTOBJECTIDS |
VOL_CAP_FMT_SYMBOLICLINKS |
VOL_CAP_FMT_HARDLINKS |
VOL_CAP_FMT_JOURNAL |
VOL_CAP_FMT_JOURNAL_ACTIVE |
VOL_CAP_FMT_NO_ROOT_TIMES |
VOL_CAP_FMT_SPARSE_FILES |
VOL_CAP_FMT_ZERO_RUNS |
VOL_CAP_FMT_CASE_SENSITIVE |
VOL_CAP_FMT_CASE_PRESERVING |
VOL_CAP_FMT_FAST_STATFS |
VOL_CAP_FMT_2TB_FILESIZE |
VOL_CAP_FMT_OPENDENYMODES |
VOL_CAP_FMT_HIDDEN_FILES |
VOL_CAP_FMT_PATH_FROM_ID |
VOL_CAP_FMT_NO_VOLUME_SIZES;
fsap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] =
VOL_CAP_INT_SEARCHFS |
VOL_CAP_INT_ATTRLIST |
VOL_CAP_INT_NFSEXPORT |
VOL_CAP_INT_READDIRATTR |
VOL_CAP_INT_EXCHANGEDATA |
VOL_CAP_INT_COPYFILE |
VOL_CAP_INT_ALLOCATE |
VOL_CAP_INT_VOL_RENAME |
VOL_CAP_INT_ADVLOCK |
VOL_CAP_INT_FLOCK |
VOL_CAP_INT_EXTENDED_SECURITY |
VOL_CAP_INT_USERACCESS |
VOL_CAP_INT_MANLOCK |
VOL_CAP_INT_EXTENDED_ATTR |
VOL_CAP_INT_NAMEDSTREAMS;
fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
fsap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
VFSATTR_SET_SUPPORTED(fsap, f_capabilities);
}
if (VFSATTR_IS_ACTIVE(fsap, f_attributes)) {
fsap->f_attributes.validattr.commonattr =
ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID |
ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID |
ATTR_CMN_PAROBJID |
ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME |
ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK |
ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID;
fsap->f_attributes.validattr.volattr =
ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE |
ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION |
ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT |
ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS |
ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES |
ATTR_VOL_ATTRIBUTES;
fsap->f_attributes.validattr.dirattr =
ATTR_DIR_LINKCOUNT | ATTR_DIR_MOUNTSTATUS;
fsap->f_attributes.validattr.fileattr =
ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE |
ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE |
ATTR_FILE_DATALENGTH;
fsap->f_attributes.validattr.forkattr = 0;
fsap->f_attributes.nativeattr.commonattr =
ATTR_CMN_NAME | ATTR_CMN_DEVID | ATTR_CMN_FSID |
ATTR_CMN_OBJTYPE | ATTR_CMN_OBJTAG | ATTR_CMN_OBJID |
ATTR_CMN_PAROBJID |
ATTR_CMN_MODTIME | ATTR_CMN_CHGTIME | ATTR_CMN_ACCTIME |
ATTR_CMN_OWNERID | ATTR_CMN_GRPID | ATTR_CMN_ACCESSMASK |
ATTR_CMN_FLAGS | ATTR_CMN_USERACCESS | ATTR_CMN_FILEID;
fsap->f_attributes.nativeattr.volattr =
ATTR_VOL_FSTYPE | ATTR_VOL_SIZE | ATTR_VOL_SPACEFREE |
ATTR_VOL_SPACEAVAIL | ATTR_VOL_MINALLOCATION |
ATTR_VOL_OBJCOUNT | ATTR_VOL_MAXOBJCOUNT |
ATTR_VOL_MOUNTPOINT | ATTR_VOL_MOUNTFLAGS |
ATTR_VOL_MOUNTEDDEVICE | ATTR_VOL_CAPABILITIES |
ATTR_VOL_ATTRIBUTES;
fsap->f_attributes.nativeattr.dirattr =
ATTR_DIR_MOUNTSTATUS;
fsap->f_attributes.nativeattr.fileattr =
ATTR_FILE_LINKCOUNT | ATTR_FILE_TOTALSIZE |
ATTR_FILE_IOBLOCKSIZE | ATTR_FILE_DEVTYPE |
ATTR_FILE_DATALENGTH;
fsap->f_attributes.nativeattr.forkattr = 0;
VFSATTR_SET_SUPPORTED(fsap, f_attributes);
}
return 0;
}
static int
nullfs_vfs_getattr(struct mount * mp, struct vfs_attr * vfap, vfs_context_t ctx)
{
struct vnode * coveredvp = NULL;
struct vfs_attr vfa;
struct null_mount * null_mp = MOUNTTONULLMOUNT(mp);
vol_capabilities_attr_t capabilities;
struct vfsstatfs * sp = vfs_statfs(mp);
struct timespec tzero = {0, 0};
NULLFSDEBUG("%s\n", __FUNCTION__);
/* Set default capabilities in case the lower file system is gone */
memset(&capabilities, 0, sizeof(capabilities));
capabilities.capabilities[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_FAST_STATFS | VOL_CAP_FMT_HIDDEN_FILES;
capabilities.valid[VOL_CAPABILITIES_FORMAT] = VOL_CAP_FMT_FAST_STATFS | VOL_CAP_FMT_HIDDEN_FILES;
if (nullfs_vfs_getlowerattr(vnode_mount(null_mp->nullm_lowerrootvp), &vfa, ctx) == 0) {
if (VFSATTR_IS_SUPPORTED(&vfa, f_capabilities)) {
memcpy(&capabilities, &vfa.f_capabilities, sizeof(capabilities));
/* don't support vget */
capabilities.capabilities[VOL_CAPABILITIES_FORMAT] &= ~(VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_PATH_FROM_ID);
capabilities.capabilities[VOL_CAPABILITIES_FORMAT] |= VOL_CAP_FMT_HIDDEN_FILES; /* Always support UF_HIDDEN */
capabilities.valid[VOL_CAPABILITIES_FORMAT] &= ~(VOL_CAP_FMT_PERSISTENTOBJECTIDS | VOL_CAP_FMT_PATH_FROM_ID);
capabilities.valid[VOL_CAPABILITIES_FORMAT] |= VOL_CAP_FMT_HIDDEN_FILES; /* Always support UF_HIDDEN */
/* dont' support interfaces that only make sense on a writable file system
* or one with specific vnops implemented */
capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] = 0;
capabilities.valid[VOL_CAPABILITIES_INTERFACES] &=
~(VOL_CAP_INT_SEARCHFS | VOL_CAP_INT_ATTRLIST | VOL_CAP_INT_READDIRATTR | VOL_CAP_INT_EXCHANGEDATA |
VOL_CAP_INT_COPYFILE | VOL_CAP_INT_ALLOCATE | VOL_CAP_INT_VOL_RENAME | VOL_CAP_INT_ADVLOCK | VOL_CAP_INT_FLOCK);
}
}
if (VFSATTR_IS_ACTIVE(vfap, f_create_time))
VFSATTR_RETURN(vfap, f_create_time, tzero);
if (VFSATTR_IS_ACTIVE(vfap, f_modify_time))
VFSATTR_RETURN(vfap, f_modify_time, tzero);
if (VFSATTR_IS_ACTIVE(vfap, f_access_time))
VFSATTR_RETURN(vfap, f_access_time, tzero);
if (VFSATTR_IS_ACTIVE(vfap, f_bsize))
VFSATTR_RETURN(vfap, f_bsize, sp->f_bsize);
if (VFSATTR_IS_ACTIVE(vfap, f_iosize))
VFSATTR_RETURN(vfap, f_iosize, sp->f_iosize);
if (VFSATTR_IS_ACTIVE(vfap, f_owner))
VFSATTR_RETURN(vfap, f_owner, 0);
if (VFSATTR_IS_ACTIVE(vfap, f_blocks))
VFSATTR_RETURN(vfap, f_blocks, sp->f_blocks);
if (VFSATTR_IS_ACTIVE(vfap, f_bfree))
VFSATTR_RETURN(vfap, f_bfree, sp->f_bfree);
if (VFSATTR_IS_ACTIVE(vfap, f_bavail))
VFSATTR_RETURN(vfap, f_bavail, sp->f_bavail);
if (VFSATTR_IS_ACTIVE(vfap, f_bused))
VFSATTR_RETURN(vfap, f_bused, sp->f_bused);
if (VFSATTR_IS_ACTIVE(vfap, f_files))
VFSATTR_RETURN(vfap, f_files, sp->f_files);
if (VFSATTR_IS_ACTIVE(vfap, f_ffree))
VFSATTR_RETURN(vfap, f_ffree, sp->f_ffree);
if (VFSATTR_IS_ACTIVE(vfap, f_fssubtype))
VFSATTR_RETURN(vfap, f_fssubtype, 0);
if (VFSATTR_IS_ACTIVE(vfap, f_capabilities)) {
memcpy(&vfap->f_capabilities, &capabilities, sizeof(vol_capabilities_attr_t));
VFSATTR_SET_SUPPORTED(vfap, f_capabilities);
}
if (VFSATTR_IS_ACTIVE(vfap, f_attributes)) {
vol_attributes_attr_t * volattr = &vfap->f_attributes;
volattr->validattr.commonattr = 0;
volattr->validattr.volattr = ATTR_VOL_NAME | ATTR_VOL_CAPABILITIES | ATTR_VOL_ATTRIBUTES;
volattr->validattr.dirattr = 0;
volattr->validattr.fileattr = 0;
volattr->validattr.forkattr = 0;
volattr->nativeattr.commonattr = 0;
volattr->nativeattr.volattr = ATTR_VOL_NAME | ATTR_VOL_CAPABILITIES | ATTR_VOL_ATTRIBUTES;
volattr->nativeattr.dirattr = 0;
volattr->nativeattr.fileattr = 0;
volattr->nativeattr.forkattr = 0;
VFSATTR_SET_SUPPORTED(vfap, f_attributes);
}
if (VFSATTR_IS_ACTIVE(vfap, f_vol_name)) {
/* The name of the volume is the same as the directory we mounted on */
coveredvp = vfs_vnodecovered(mp);
if (coveredvp) {
const char * name = vnode_getname_printable(coveredvp);
strlcpy(vfap->f_vol_name, name, MAXPATHLEN);
vnode_putname_printable(name);
VFSATTR_SET_SUPPORTED(vfap, f_vol_name);
vnode_put(coveredvp);
}
}
return 0;
}
static int
vfs_getattr_9p(mount_t mp, struct vfs_attr *ap, vfs_context_t ctx)
{
#pragma unused(ctx)
struct vfsstatfs *sp;
mount_9p *nmp;
TRACE();
nmp = MTO9P(mp);
sp = vfs_statfs(mp);
VFSATTR_RETURN(ap, f_bsize, sp->f_bsize);
VFSATTR_RETURN(ap, f_iosize, sp->f_iosize);
// VFSATTR_RETURN(ap, f_blocks, sp->f_blocks);
// VFSATTR_RETURN(ap, f_bfree, sp->f_bfree);
// VFSATTR_RETURN(ap, f_bavail, sp->f_bavail);
// VFSATTR_RETURN(ap, f_bused, sp->f_bused);
VFSATTR_RETURN(ap, f_files, sp->f_files);
VFSATTR_RETURN(ap, f_ffree, sp->f_ffree);
if (VFSATTR_IS_ACTIVE(ap, f_capabilities)) {
ap->f_capabilities.valid[VOL_CAPABILITIES_FORMAT] = 0
| VOL_CAP_FMT_PERSISTENTOBJECTIDS
| VOL_CAP_FMT_SYMBOLICLINKS
| VOL_CAP_FMT_HARDLINKS
| VOL_CAP_FMT_JOURNAL
| VOL_CAP_FMT_JOURNAL_ACTIVE
| VOL_CAP_FMT_NO_ROOT_TIMES
| VOL_CAP_FMT_SPARSE_FILES
| VOL_CAP_FMT_ZERO_RUNS
| VOL_CAP_FMT_CASE_SENSITIVE
| VOL_CAP_FMT_CASE_PRESERVING
| VOL_CAP_FMT_FAST_STATFS
| VOL_CAP_FMT_2TB_FILESIZE
| VOL_CAP_FMT_OPENDENYMODES
| VOL_CAP_FMT_HIDDEN_FILES
| VOL_CAP_FMT_PATH_FROM_ID
| VOL_CAP_FMT_NO_VOLUME_SIZES
| VOL_CAP_FMT_DECMPFS_COMPRESSION
;
ap->f_capabilities.capabilities[VOL_CAPABILITIES_FORMAT] = 0
| VOL_CAP_FMT_NO_ROOT_TIMES
| VOL_CAP_FMT_CASE_SENSITIVE
| VOL_CAP_FMT_CASE_PRESERVING
| VOL_CAP_FMT_FAST_STATFS
| VOL_CAP_FMT_2TB_FILESIZE
| VOL_CAP_FMT_NO_VOLUME_SIZES
;
ap->f_capabilities.valid[VOL_CAPABILITIES_INTERFACES] = 0
| VOL_CAP_INT_SEARCHFS
| VOL_CAP_INT_ATTRLIST
| VOL_CAP_INT_NFSEXPORT
| VOL_CAP_INT_READDIRATTR
| VOL_CAP_INT_EXCHANGEDATA
| VOL_CAP_INT_COPYFILE
| VOL_CAP_INT_ALLOCATE
| VOL_CAP_INT_VOL_RENAME
| VOL_CAP_INT_ADVLOCK
| VOL_CAP_INT_FLOCK
| VOL_CAP_INT_EXTENDED_SECURITY
| VOL_CAP_INT_USERACCESS
| VOL_CAP_INT_MANLOCK
| VOL_CAP_INT_NAMEDSTREAMS
| VOL_CAP_INT_EXTENDED_ATTR
;
ap->f_capabilities.capabilities[VOL_CAPABILITIES_INTERFACES] = 0
| VOL_CAP_INT_ADVLOCK
| VOL_CAP_INT_FLOCK
;
ap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED1] = 0;
ap->f_capabilities.valid[VOL_CAPABILITIES_RESERVED2] = 0;
ap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED1] = 0;
ap->f_capabilities.capabilities[VOL_CAPABILITIES_RESERVED2] = 0;
VFSATTR_SET_SUPPORTED(ap, f_capabilities);
}
if (VFSATTR_IS_ACTIVE(ap, f_attributes)) {
ap->f_attributes.nativeattr.commonattr = ap->f_attributes.validattr.commonattr = 0;
ap->f_attributes.nativeattr.volattr = ap->f_attributes.validattr.volattr = 0
| ATTR_VOL_IOBLOCKSIZE
| ATTR_VOL_MOUNTFLAGS
| ATTR_VOL_NAME
| ATTR_VOL_MOUNTFLAGS
| ATTR_VOL_MOUNTEDDEVICE
| ATTR_VOL_CAPABILITIES
| ATTR_VOL_ATTRIBUTES
;
ap->f_attributes.nativeattr.dirattr = ap->f_attributes.validattr.dirattr = 0;
ap->f_attributes.nativeattr.fileattr = ap->f_attributes.validattr.fileattr = 0;
ap->f_attributes.nativeattr.forkattr = ap->f_attributes.validattr.forkattr = 0;
VFSATTR_SET_SUPPORTED(ap, f_attributes);
}
if (VFSATTR_IS_ACTIVE(ap, f_vol_name)) {
strlcpy(ap->f_vol_name, nmp->volume, MAXPATHLEN);
VFSATTR_SET_SUPPORTED(ap, f_vol_name);
}
return 0;
}
/**
* VBoxVFS get VFS layer object attribute callback.
*
* @param mp Mount data provided by VFS layer.
* @param pAttr Output buffer to return attributes.
* @param pContext kAuth context needed in order to authentificate mount operation.
*
* @returns 0 for success, else an error code.
*/
static int
vboxvfs_getattr(struct mount *mp, struct vfs_attr *pAttr, vfs_context_t pContext)
{
NOREF(pContext);
vboxvfs_mount_t *pMount;
SHFLVOLINFO SHFLVolumeInfo;
int rc;
uint32_t cbBuffer = sizeof(SHFLVolumeInfo);
uint32_t u32bsize;
uint64_t u64blocks;
uint64_t u64bfree;
PDEBUG("Getting attribute...\n");
AssertReturn(mp, EINVAL);
pMount = (vboxvfs_mount_t *)vfs_fsprivate(mp);
AssertReturn(pMount, EINVAL);
AssertReturn(pMount->pShareName, EINVAL);
rc = VbglR0SfFsInfo(&g_vboxSFClient, &pMount->pMap, 0, SHFL_INFO_GET | SHFL_INFO_VOLUME,
&cbBuffer, (PSHFLDIRINFO)&SHFLVolumeInfo);
AssertReturn(rc == 0, EPROTO);
u32bsize = (uint32_t)SHFLVolumeInfo.ulBytesPerAllocationUnit;
AssertReturn(u32bsize > 0, ENOTSUP);
u64blocks = (uint64_t)SHFLVolumeInfo.ullTotalAllocationBytes / (uint64_t)u32bsize;
u64bfree = (uint64_t)SHFLVolumeInfo.ullAvailableAllocationBytes / (uint64_t)u32bsize;
VFSATTR_RETURN(pAttr, f_bsize, u32bsize);
VFSATTR_RETURN(pAttr, f_blocks, u64blocks);
VFSATTR_RETURN(pAttr, f_bfree, u64bfree);
VFSATTR_RETURN(pAttr, f_bavail, u64bfree);
VFSATTR_RETURN(pAttr, f_bused, u64blocks - u64bfree);
VFSATTR_RETURN(pAttr, f_owner, pMount->owner);
VFSATTR_CLEAR_ACTIVE(pAttr, f_iosize);
VFSATTR_CLEAR_ACTIVE(pAttr, f_files);
VFSATTR_CLEAR_ACTIVE(pAttr, f_ffree);
VFSATTR_CLEAR_ACTIVE(pAttr, f_fssubtype);
/* todo: take care about f_capabilities and f_attributes, f_fsid */
VFSATTR_CLEAR_ACTIVE(pAttr, f_capabilities);
VFSATTR_CLEAR_ACTIVE(pAttr, f_attributes);
VFSATTR_CLEAR_ACTIVE(pAttr, f_fsid);
/* todo: take care about f_create_time, f_modify_time, f_access_time, f_backup_time */
VFSATTR_CLEAR_ACTIVE(pAttr, f_create_time);
VFSATTR_CLEAR_ACTIVE(pAttr, f_modify_time);
VFSATTR_CLEAR_ACTIVE(pAttr, f_access_time);
VFSATTR_CLEAR_ACTIVE(pAttr, f_backup_time);
VFSATTR_CLEAR_ACTIVE(pAttr, f_signature);
VFSATTR_CLEAR_ACTIVE(pAttr, f_carbon_fsid);
VFSATTR_CLEAR_ACTIVE(pAttr, f_uuid);
if (VFSATTR_IS_ACTIVE(pAttr, f_vol_name))
{
strlcpy(pAttr->f_vol_name, (char*)pMount->pShareName->String.utf8, MAXPATHLEN);
VFSATTR_SET_SUPPORTED(pAttr, f_vol_name);
}
VFSATTR_ALL_SUPPORTED(pAttr);
return 0;
}
