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Diffstat (limited to 'internal/fusefrontend/fs.go')
-rw-r--r--internal/fusefrontend/fs.go24
1 files changed, 23 insertions, 1 deletions
diff --git a/internal/fusefrontend/fs.go b/internal/fusefrontend/fs.go
index 62146a2..26a5b5e 100644
--- a/internal/fusefrontend/fs.go
+++ b/internal/fusefrontend/fs.go
@@ -22,6 +22,7 @@ import (
"github.com/rfjakob/gocryptfs/internal/tlog"
)
+// FS implements the go-fuse virtual filesystem interface.
type FS struct {
pathfs.FileSystem // loopbackFileSystem, see go-fuse/fuse/pathfs/loopback.go
args Args // Stores configuration arguments
@@ -35,7 +36,9 @@ type FS struct {
contentEnc *contentenc.ContentEnc
}
-// Encrypted FUSE overlay filesystem
+var _ pathfs.FileSystem = &FS{} // Verify that interface is implemented.
+
+// NewFS returns a new encrypted FUSE overlay filesystem.
func NewFS(args Args) *FS {
cryptoCore := cryptocore.New(args.Masterkey, args.CryptoBackend, contentenc.DefaultIVBits)
contentEnc := contentenc.New(cryptoCore, contentenc.DefaultBS)
@@ -49,6 +52,7 @@ func NewFS(args Args) *FS {
}
}
+// GetAttr implements pathfs.Filesystem.
func (fs *FS) GetAttr(name string, context *fuse.Context) (*fuse.Attr, fuse.Status) {
tlog.Debug.Printf("FS.GetAttr('%s')", name)
if fs.isFiltered(name) {
@@ -85,6 +89,7 @@ func (fs *FS) mangleOpenFlags(flags uint32) (newFlags int, writeOnly bool) {
return newFlags, writeOnly
}
+// Open implements pathfs.Filesystem.
func (fs *FS) Open(path string, flags uint32, context *fuse.Context) (fuseFile nodefs.File, status fuse.Status) {
if fs.isFiltered(path) {
return nil, fuse.EPERM
@@ -104,6 +109,7 @@ func (fs *FS) Open(path string, flags uint32, context *fuse.Context) (fuseFile n
return NewFile(f, writeOnly, fs.contentEnc)
}
+// Create implements pathfs.Filesystem.
func (fs *FS) Create(path string, flags uint32, mode uint32, context *fuse.Context) (fuseFile nodefs.File, code fuse.Status) {
if fs.isFiltered(path) {
return nil, fuse.EPERM
@@ -156,6 +162,7 @@ func (fs *FS) Create(path string, flags uint32, mode uint32, context *fuse.Conte
return NewFile(fd, writeOnly, fs.contentEnc)
}
+// Chmod implements pathfs.Filesystem.
func (fs *FS) Chmod(path string, mode uint32, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -170,6 +177,7 @@ func (fs *FS) Chmod(path string, mode uint32, context *fuse.Context) (code fuse.
return fuse.ToStatus(err)
}
+// Chown implements pathfs.Filesystem.
func (fs *FS) Chown(path string, uid uint32, gid uint32, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -181,6 +189,7 @@ func (fs *FS) Chown(path string, uid uint32, gid uint32, context *fuse.Context)
return fuse.ToStatus(os.Lchown(cPath, int(uid), int(gid)))
}
+// Mknod implements pathfs.Filesystem.
func (fs *FS) Mknod(path string, mode uint32, dev uint32, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -217,6 +226,7 @@ func (fs *FS) Mknod(path string, mode uint32, dev uint32, context *fuse.Context)
return fs.FileSystem.Mknod(cPath, mode, dev, context)
}
+// Truncate implements pathfs.Filesystem.
// Support truncate(2) by opening the file and calling ftruncate(2)
// While the glibc "truncate" wrapper seems to always use ftruncate, fsstress from
// xfstests uses this a lot by calling "truncate64" directly.
@@ -230,6 +240,7 @@ func (fs *FS) Truncate(path string, offset uint64, context *fuse.Context) (code
return code
}
+// Utimens implements pathfs.Filesystem.
func (fs *FS) Utimens(path string, a *time.Time, m *time.Time, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -241,6 +252,7 @@ func (fs *FS) Utimens(path string, a *time.Time, m *time.Time, context *fuse.Con
return fs.FileSystem.Utimens(cPath, a, m, context)
}
+// StatFs implements pathfs.Filesystem.
func (fs *FS) StatFs(path string) *fuse.StatfsOut {
if fs.isFiltered(path) {
return nil
@@ -252,6 +264,7 @@ func (fs *FS) StatFs(path string) *fuse.StatfsOut {
return fs.FileSystem.StatFs(cPath)
}
+// Readlink implements pathfs.Filesystem.
func (fs *FS) Readlink(path string, context *fuse.Context) (out string, status fuse.Status) {
cPath, err := fs.getBackingPath(path)
if err != nil {
@@ -278,6 +291,7 @@ func (fs *FS) Readlink(path string, context *fuse.Context) (out string, status f
return string(target), fuse.OK
}
+// Unlink implements pathfs.Filesystem.
func (fs *FS) Unlink(path string, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -312,6 +326,7 @@ func (fs *FS) Unlink(path string, context *fuse.Context) (code fuse.Status) {
return fuse.ToStatus(err)
}
+// Symlink implements pathfs.Filesystem.
func (fs *FS) Symlink(target string, linkName string, context *fuse.Context) (code fuse.Status) {
tlog.Debug.Printf("Symlink(\"%s\", \"%s\")", target, linkName)
if fs.isFiltered(linkName) {
@@ -359,6 +374,7 @@ func (fs *FS) Symlink(target string, linkName string, context *fuse.Context) (co
return fuse.ToStatus(err)
}
+// Rename implements pathfs.Filesystem.
func (fs *FS) Rename(oldPath string, newPath string, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(newPath) {
return fuse.EPERM
@@ -437,6 +453,7 @@ func (fs *FS) Rename(oldPath string, newPath string, context *fuse.Context) (cod
return fuse.OK
}
+// Link implements pathfs.Filesystem.
func (fs *FS) Link(oldPath string, newPath string, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(newPath) {
return fuse.EPERM
@@ -474,6 +491,7 @@ func (fs *FS) Link(oldPath string, newPath string, context *fuse.Context) (code
return fuse.ToStatus(os.Link(cOldPath, cNewPath))
}
+// Access implements pathfs.Filesystem.
func (fs *FS) Access(path string, mode uint32, context *fuse.Context) (code fuse.Status) {
if fs.isFiltered(path) {
return fuse.EPERM
@@ -485,18 +503,22 @@ func (fs *FS) Access(path string, mode uint32, context *fuse.Context) (code fuse
return fuse.ToStatus(syscall.Access(cPath, mode))
}
+// GetXAttr implements pathfs.Filesystem.
func (fs *FS) GetXAttr(name string, attr string, context *fuse.Context) ([]byte, fuse.Status) {
return nil, fuse.ENOSYS
}
+// SetXAttr implements pathfs.Filesystem.
func (fs *FS) SetXAttr(name string, attr string, data []byte, flags int, context *fuse.Context) fuse.Status {
return fuse.ENOSYS
}
+// ListXAttr implements pathfs.Filesystem.
func (fs *FS) ListXAttr(name string, context *fuse.Context) ([]string, fuse.Status) {
return nil, fuse.ENOSYS
}
+// RemoveXAttr implements pathfs.Filesystem.
func (fs *FS) RemoveXAttr(name string, attr string, context *fuse.Context) fuse.Status {
return fuse.ENOSYS
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 10:35:50 +0000