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package fusefrontend_reverse
import (
"fmt"
"syscall"
"github.com/hanwen/go-fuse/v2/fs"
"golang.org/x/sys/unix"
"github.com/rfjakob/gocryptfs/v2/internal/syscallcompat"
)
// On Linux, ENODATA is returned when an attribute is not found.
const noSuchAttributeError = syscall.ENODATA
func (n *Node) getXAttr(cAttr string) (out []byte, errno syscall.Errno) {
d, errno := n.prepareAtSyscall("")
if errno != 0 {
return
}
defer syscall.Close(d.dirfd)
procPath := fmt.Sprintf("/proc/self/fd/%d/%s", d.dirfd, d.pName)
pData, err := syscallcompat.Lgetxattr(procPath, cAttr)
if err != nil {
return nil, fs.ToErrno(err)
}
return pData, 0
}
func (n *Node) listXAttr(buf []byte) (sz int, errno syscall.Errno) {
d, errno := n.prepareAtSyscall("")
if errno != 0 {
return
}
defer syscall.Close(d.dirfd)
procPath := fmt.Sprintf("/proc/self/fd/%d/%s", d.dirfd, d.pName)
sz, err := unix.Llistxattr(procPath, buf)
return sz, fs.ToErrno(err)
}
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