// Statfs gets the filesystem meta information. It's notably used to report filesystem metrics
// to the host. If the target account is using quota it will be reported as the device size.
// If no quota was found the device size will be equal to the underlying type maximum value.
func (s *SVFS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.StatfsResponse) error {
account, _, err := SwiftConnection.Account()
if err != nil {
return err
}
resp.Bsize = uint32(BlockSize)
// Not mounting a specific container, then get account
// information.
if TargetContainer == "" {
resp.Files = uint64(account.Objects)
resp.Blocks = uint64(account.BytesUsed) / uint64(resp.Bsize)
}
// Mounting a specific container, then get container usage.
if TargetContainer != "" {
c, _, err := SwiftConnection.Container(TargetContainer)
if err != nil {
return err
}
cs, _, err := SwiftConnection.Container(TargetContainer + segmentContainerSuffix)
if err != nil {
return err
}
resp.Files = uint64(c.Count)
resp.Blocks = uint64(c.Bytes+cs.Bytes) / uint64(resp.Bsize)
}
// An account quota has been set, compute relative free space.
if account.Quota > 0 {
resp.Bavail = uint64(account.Quota-account.BytesUsed) / uint64(resp.Bsize)
resp.Bfree = resp.Bavail
if TargetContainer == "" {
resp.Blocks = uint64(account.Quota) / uint64(resp.Bsize)
} else {
resp.Blocks = uint64(account.Quota-account.BytesUsed)/uint64(resp.Bsize) + resp.Blocks
}
} else {
// Else there's theorically no limit to available storage space.
used := resp.Blocks
resp.Blocks = uint64(1<<63-1) / uint64(resp.Bsize)
resp.Bavail = resp.Blocks - used
resp.Bfree = resp.Bavail
}
return nil
}
func (fs FS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.StatfsResponse) error {
resp.Blocks = 18446744073709551615
resp.Bfree = 18446744073709551615 // Free blocks in file system.
resp.Bavail = 18446744073709551615 // Free blocks in file system if you're not root.
resp.Files = 0 // Total files in file system.
resp.Ffree = 18446744073709551615 // Free files in file system.
resp.Bsize = uint32(fs.blockSize) // Block size
resp.Namelen = 4294967295 // Maximum file name length?
resp.Frsize = 1 // Fragment size, smallest addressable data size in the file system.
return nil
}
func (fs *CamliFileSystem) Statfs(ctx context.Context, req *fuse.StatfsRequest, res *fuse.StatfsResponse) error {
// Make some stuff up, just to see if it makes "lsof" happy.
res.Blocks = 1 << 35
res.Bfree = 1 << 34
res.Bavail = 1 << 34
res.Files = 1 << 29
res.Ffree = 1 << 28
res.Namelen = 2048
res.Bsize = 1024
return nil
}
// Statfs is called to obtain file system metadata.
// It should write that data to resp.
func (f *FS) Statfs(ctx context.Context, req *fuse.StatfsRequest, resp *fuse.StatfsResponse) error {
const blockSize = 4096
const fsBlocks = (1 << 50) / blockSize
resp.Blocks = fsBlocks // Total data blocks in file system.
resp.Bfree = fsBlocks // Free blocks in file system.
resp.Bavail = fsBlocks // Free blocks in file system if you're not root.
resp.Files = 1E9 // Total files in file system.
resp.Ffree = 1E9 // Free files in file system.
resp.Bsize = blockSize // Block size
resp.Namelen = 255 // Maximum file name length?
resp.Frsize = blockSize // Fragment size, smallest addressable data size in the file system.
return nil
}
func (fs FS) Statfs(req *fuse.StatfsRequest, res *fuse.StatfsResponse, intr fs.Intr) fuse.Error {
// Make some stuff up, just to see if it makes "lsof" happy.
res.Blocks = 1 << 35
res.Bfree = 1 << 34
res.Bavail = 1 << 34
res.Files = 1 << 29
res.Ffree = 1 << 28
res.Namelen = 2048
// res.Bsize = 1024
// res.Bsize = 32768
// res.Bsize = 49152
res.Bsize = 4096 * 1024
return nil
}
func statfsToFuse(path string, resp *fuse.StatfsResponse) error {
var buf syscall.Statfs_t
if err := syscall.Statfs(path, &buf); err != nil {
return fuse.ENOTSUP
}
resp.Blocks = uint64(buf.Blocks) // Total data blocks in file system.
resp.Bfree = uint64(buf.Bfree) // Free blocks in file system.
resp.Bavail = uint64(buf.Bavail) // Free blocks in file system if you're not root.
resp.Files = uint64(buf.Files) // Total files in file system.
resp.Ffree = uint64(buf.Ffree) // Free files in file system.
resp.Bsize = uint32(buf.Bsize) // Block size
// resp.Namelen = ???? // Does not exist on Mac OS X
// resp.Frsize = // Does not exist on Mac OS X
return nil
}
func (f testStatFS) Statfs(req *fuse.StatfsRequest, resp *fuse.StatfsResponse, int fs.Intr) fuse.Error {
resp.Blocks = 42
resp.Files = 13
return nil
}
