Commit 6a1014cd authored by Ben Sidhom's avatar Ben Sidhom Committed by Aaron Jacobs

Enable StatFS on dynamicfs

MacOS apparently invokes StatFS on os.Lstat/os.Stat. Note that the
return fields are not actually populated here.
parent 8edb6e44
package dynamicfs
import (
"strings"
"fmt"
"io"
"log"
"os"
"strings"
"sync"
"time"
"golang.org/x/net/context"
"github.com/jacobsa/timeutil"
"github.com/jacobsa/fuse"
"github.com/jacobsa/fuse/fuseutil"
"github.com/jacobsa/fuse/fuseops"
"os"
"fmt"
"log"
"sync"
"time"
"github.com/jacobsa/fuse/fuseutil"
"github.com/jacobsa/timeutil"
)
// Create a file system that contains 2 files (`age` and `weekday`) and no directories. Every time
......@@ -34,8 +34,8 @@ import (
func NewDynamicFS(clock timeutil.Clock) (server fuse.Server, err error) {
createTime := clock.Now()
fs := &dynamicFS{
clock: clock,
createTime: createTime,
clock: clock,
createTime: createTime,
fileHandles: make(map[fuseops.HandleID]string),
}
server = fuseutil.NewFileSystemServer(fs)
......@@ -44,10 +44,10 @@ func NewDynamicFS(clock timeutil.Clock) (server fuse.Server, err error) {
type dynamicFS struct {
fuseutil.NotImplementedFileSystem
mu sync.Mutex
clock timeutil.Clock
createTime time.Time
nextHandle fuseops.HandleID
mu sync.Mutex
clock timeutil.Clock
createTime time.Time
nextHandle fuseops.HandleID
fileHandles map[fuseops.HandleID]string
}
......@@ -79,9 +79,9 @@ var gInodeInfo = map[fuseops.InodeID]inodeInfo{
children: []fuseutil.Dirent{
{
Offset: 1,
Inode: ageInode,
Name: "age",
Type: fuseutil.DT_File,
Inode: ageInode,
Name: "age",
Type: fuseutil.DT_File,
},
{
Offset: 2,
......@@ -96,7 +96,7 @@ var gInodeInfo = map[fuseops.InodeID]inodeInfo{
ageInode: {
attributes: fuseops.InodeAttributes{
Nlink: 1,
Mode: 0444,
Mode: 0444,
},
},
......@@ -104,15 +104,15 @@ var gInodeInfo = map[fuseops.InodeID]inodeInfo{
weekdayInode: {
attributes: fuseops.InodeAttributes{
Nlink: 1,
Mode: 0444,
Mode: 0444,
// Size left at 0.
},
},
}
func findChildInode(
name string,
children []fuseutil.Dirent) (inode fuseops.InodeID, err error) {
name string,
children []fuseutil.Dirent) (inode fuseops.InodeID, err error) {
for _, e := range children {
if e.Name == name {
inode = e.Inode
......@@ -131,13 +131,12 @@ func (fs *dynamicFS) findUnusedHandle() fuseops.HandleID {
handle++
}
fs.nextHandle = handle + 1
log.Printf("Minting new handle: %d", handle)
return handle
}
func (fs *dynamicFS) GetInodeAttributes(
ctx context.Context,
op *fuseops.GetInodeAttributesOp) (err error) {
ctx context.Context,
op *fuseops.GetInodeAttributesOp) (err error) {
// Find the info for this inode.
info, ok := gInodeInfo[op.Inode]
if !ok {
......@@ -150,8 +149,8 @@ op *fuseops.GetInodeAttributesOp) (err error) {
}
func (fs *dynamicFS) LookUpInode(
ctx context.Context,
op *fuseops.LookUpInodeOp) (err error) {
ctx context.Context,
op *fuseops.LookUpInodeOp) (err error) {
// Find the info for the parent.
parentInfo, ok := gInodeInfo[op.Parent]
if !ok {
......@@ -173,15 +172,15 @@ op *fuseops.LookUpInodeOp) (err error) {
}
func (fs *dynamicFS) OpenDir(
ctx context.Context,
op *fuseops.OpenDirOp) (err error) {
ctx context.Context,
op *fuseops.OpenDirOp) (err error) {
// Allow opening directory.
return
}
func (fs *dynamicFS) ReadDir(
ctx context.Context,
op *fuseops.ReadDirOp) (err error) {
ctx context.Context,
op *fuseops.ReadDirOp) (err error) {
// Find the info for this inode.
info, ok := gInodeInfo[op.Inode]
if !ok {
......@@ -218,8 +217,8 @@ op *fuseops.ReadDirOp) (err error) {
}
func (fs *dynamicFS) OpenFile(
ctx context.Context,
op *fuseops.OpenFileOp) (err error) {
ctx context.Context,
op *fuseops.OpenFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
var contents string
......@@ -243,8 +242,8 @@ op *fuseops.OpenFileOp) (err error) {
}
func (fs *dynamicFS) ReadFile(
ctx context.Context,
op *fuseops.ReadFileOp) (err error) {
ctx context.Context,
op *fuseops.ReadFileOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
contents, ok := fs.fileHandles[op.Handle]
......@@ -262,8 +261,8 @@ op *fuseops.ReadFileOp) (err error) {
}
func (fs *dynamicFS) ReleaseFileHandle(
ctx context.Context,
op *fuseops.ReleaseFileHandleOp) (err error) {
ctx context.Context,
op *fuseops.ReleaseFileHandleOp) (err error) {
fs.mu.Lock()
defer fs.mu.Unlock()
_, ok := fs.fileHandles[op.Handle]
......@@ -275,3 +274,8 @@ func (fs *dynamicFS) ReleaseFileHandle(
delete(fs.fileHandles, op.Handle)
return
}
func (fs *dynamicFS) StatFS(ctx context.Context,
op *fuseops.StatFSOp) (err error) {
return
}
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