84e702126a
The new contrib/maxlen.bash showed that we have exponential
runtime with respect to directory depth.
The new recursive diriv caching is a lot smarter as it caches
intermediate lookups. maxlen.bash now completes in a few seconds.
xfstests results same as
2d158e4c82/screenlog.0 :
Failures: generic/035 generic/062 generic/080 generic/093 generic/099 generic/215 generic/285 generic/319 generic/426 generic/444 generic/467 generic/477 generic/523
Failed 13 of 580 tests
benchmark.bash results are identical:
$ ./benchmark.bash
Testing gocryptfs at /tmp/benchmark.bash.BdQ: gocryptfs v2.0.1-17-g6b09bc0; go-fuse v2.1.1-0.20210611132105-24a1dfe6b4f8; 2021-06-25 go1.16.5 linux/amd64
/tmp/benchmark.bash.BdQ.mnt is a mountpoint
WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 0,4821 s, 544 MB/s
READ: 262144000 bytes (262 MB, 250 MiB) copied, 0,266061 s, 985 MB/s
UNTAR: 8,280
MD5: 4,564
LS: 1,745
RM: 2,244
108 lines
2.7 KiB
Go
108 lines
2.7 KiB
Go
package fusefrontend
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import (
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"syscall"
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"golang.org/x/sys/unix"
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"github.com/hanwen/go-fuse/v2/fs"
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"github.com/hanwen/go-fuse/v2/fuse"
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"github.com/rfjakob/gocryptfs/internal/syscallcompat"
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)
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// On Darwin we have to unset XATTR_NOSECURITY 0x0008
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func filterXattrSetFlags(flags int) int {
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// See https://opensource.apple.com/source/xnu/xnu-1504.15.3/bsd/sys/xattr.h.auto.html
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const XATTR_NOSECURITY = 0x0008
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return flags &^ XATTR_NOSECURITY
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}
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func (n *Node) getXAttr(cAttr string) (out []byte, errno syscall.Errno) {
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dirfd, cName, errno := n.prepareAtSyscallMyself()
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if errno != 0 {
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return
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}
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defer syscall.Close(dirfd)
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// O_NONBLOCK to not block on FIFOs.
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fd, err := syscallcompat.Openat(dirfd, cName, syscall.O_RDONLY|syscall.O_NONBLOCK, 0)
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if err != nil {
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return nil, fs.ToErrno(err)
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}
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defer syscall.Close(fd)
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cData, err := syscallcompat.Fgetxattr(fd, cAttr)
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if err != nil {
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return nil, fs.ToErrno(err)
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}
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return cData, 0
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}
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func (n *Node) setXAttr(context *fuse.Context, cAttr string, cData []byte, flags uint32) (errno syscall.Errno) {
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dirfd, cName, errno := n.prepareAtSyscallMyself()
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if errno != 0 {
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return
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}
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defer syscall.Close(dirfd)
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// O_NONBLOCK to not block on FIFOs.
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fd, err := syscallcompat.Openat(dirfd, cName, syscall.O_WRONLY|syscall.O_NONBLOCK, 0)
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// Directories cannot be opened read-write. Retry.
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if err == syscall.EISDIR {
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fd, err = syscallcompat.Openat(dirfd, cName, syscall.O_RDONLY|syscall.O_DIRECTORY|syscall.O_NONBLOCK, 0)
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}
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if err != nil {
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fs.ToErrno(err)
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}
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defer syscall.Close(fd)
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err = unix.Fsetxattr(fd, cAttr, cData, int(flags))
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return fs.ToErrno(err)
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}
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func (n *Node) removeXAttr(cAttr string) (errno syscall.Errno) {
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dirfd, cName, errno := n.prepareAtSyscallMyself()
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if errno != 0 {
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return
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}
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defer syscall.Close(dirfd)
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// O_NONBLOCK to not block on FIFOs.
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fd, err := syscallcompat.Openat(dirfd, cName, syscall.O_WRONLY|syscall.O_NONBLOCK, 0)
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// Directories cannot be opened read-write. Retry.
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if err == syscall.EISDIR {
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fd, err = syscallcompat.Openat(dirfd, cName, syscall.O_RDONLY|syscall.O_DIRECTORY|syscall.O_NONBLOCK, 0)
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}
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if err != nil {
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return fs.ToErrno(err)
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}
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defer syscall.Close(fd)
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err = unix.Fremovexattr(fd, cAttr)
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return fs.ToErrno(err)
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}
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func (n *Node) listXAttr() (out []string, errno syscall.Errno) {
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dirfd, cName, errno := n.prepareAtSyscallMyself()
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if errno != 0 {
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return
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}
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defer syscall.Close(dirfd)
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// O_NONBLOCK to not block on FIFOs.
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fd, err := syscallcompat.Openat(dirfd, cName, syscall.O_RDONLY|syscall.O_NONBLOCK, 0)
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if err != nil {
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return nil, fs.ToErrno(err)
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}
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defer syscall.Close(fd)
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cNames, err := syscallcompat.Flistxattr(fd)
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if err != nil {
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return nil, fs.ToErrno(err)
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}
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return cNames, 0
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}
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