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authorJakob Unterwurzacher2020-07-14 19:55:20 +0200
committerJakob Unterwurzacher2020-07-14 19:55:20 +0200
commit57d572dbc10cfb1d14642598b0827d4119b26b64 (patch)
tree16e46ff7a7746edfc471ba06ef0570db92fd09fe /internal/fusefrontend/node_xattr_linux.go
parent4a0966e79efb157b612e4f5867ec6f111571546c (diff)
v2api: implement Getxattr, Setxattr, Removexattr, Listxattr
gocryptfs/tests/xattr passes.
Diffstat (limited to 'internal/fusefrontend/node_xattr_linux.go')
-rw-r--r--internal/fusefrontend/node_xattr_linux.go68
1 files changed, 68 insertions, 0 deletions
diff --git a/internal/fusefrontend/node_xattr_linux.go b/internal/fusefrontend/node_xattr_linux.go
new file mode 100644
index 0000000..342bdf6
--- /dev/null
+++ b/internal/fusefrontend/node_xattr_linux.go
@@ -0,0 +1,68 @@
+package fusefrontend
+
+import (
+ "fmt"
+ "syscall"
+
+ "golang.org/x/sys/unix"
+
+ "github.com/hanwen/go-fuse/v2/fs"
+
+ "github.com/rfjakob/gocryptfs/internal/syscallcompat"
+)
+
+func filterXattrSetFlags(flags int) int {
+ return flags
+}
+
+func (n *Node) getXAttr(cAttr string) (out []byte, errno syscall.Errno) {
+ dirfd, cName, errno := n.prepareAtSyscall("")
+ if errno != 0 {
+ return
+ }
+ defer syscall.Close(dirfd)
+
+ procPath := fmt.Sprintf("/proc/self/fd/%d/%s", dirfd, cName)
+ cData, err := syscallcompat.Lgetxattr(procPath, cAttr)
+ if err != nil {
+ return nil, fs.ToErrno(err)
+ }
+ return cData, 0
+}
+
+func (n *Node) setXAttr(cAttr string, cData []byte, flags uint32) (errno syscall.Errno) {
+ dirfd, cName, errno := n.prepareAtSyscall("")
+ if errno != 0 {
+ return
+ }
+ defer syscall.Close(dirfd)
+
+ procPath := fmt.Sprintf("/proc/self/fd/%d/%s", dirfd, cName)
+ return fs.ToErrno(unix.Lsetxattr(procPath, cAttr, cData, int(flags)))
+}
+
+func (n *Node) removeXAttr(cAttr string) (errno syscall.Errno) {
+ dirfd, cName, errno := n.prepareAtSyscall("")
+ if errno != 0 {
+ return
+ }
+ defer syscall.Close(dirfd)
+
+ procPath := fmt.Sprintf("/proc/self/fd/%d/%s", dirfd, cName)
+ return fs.ToErrno(unix.Lremovexattr(procPath, cAttr))
+}
+
+func (n *Node) listXAttr() (out []string, errno syscall.Errno) {
+ dirfd, cName, errno := n.prepareAtSyscall("")
+ if errno != 0 {
+ return
+ }
+ defer syscall.Close(dirfd)
+
+ procPath := fmt.Sprintf("/proc/self/fd/%d/%s", dirfd, cName)
+ cNames, err := syscallcompat.Llistxattr(procPath)
+ if err != nil {
+ return nil, fs.ToErrno(err)
+ }
+ return cNames, 0
+}