306 lines
7.9 KiB
Go
306 lines
7.9 KiB
Go
// Copyright 2016 the Go-FUSE Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package fuse
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import (
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"fmt"
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"os"
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"strings"
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"syscall"
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)
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var (
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writeFlagNames = map[int64]string{
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WRITE_CACHE: "CACHE",
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WRITE_LOCKOWNER: "LOCKOWNER",
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}
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readFlagNames = map[int64]string{
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READ_LOCKOWNER: "LOCKOWNER",
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}
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initFlagNames = map[int64]string{
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CAP_ASYNC_READ: "ASYNC_READ",
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CAP_POSIX_LOCKS: "POSIX_LOCKS",
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CAP_FILE_OPS: "FILE_OPS",
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CAP_ATOMIC_O_TRUNC: "ATOMIC_O_TRUNC",
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CAP_EXPORT_SUPPORT: "EXPORT_SUPPORT",
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CAP_BIG_WRITES: "BIG_WRITES",
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CAP_DONT_MASK: "DONT_MASK",
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CAP_SPLICE_WRITE: "SPLICE_WRITE",
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CAP_SPLICE_MOVE: "SPLICE_MOVE",
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CAP_SPLICE_READ: "SPLICE_READ",
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CAP_FLOCK_LOCKS: "FLOCK_LOCKS",
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CAP_IOCTL_DIR: "IOCTL_DIR",
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CAP_AUTO_INVAL_DATA: "AUTO_INVAL_DATA",
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CAP_READDIRPLUS: "READDIRPLUS",
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CAP_READDIRPLUS_AUTO: "READDIRPLUS_AUTO",
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CAP_ASYNC_DIO: "ASYNC_DIO",
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CAP_WRITEBACK_CACHE: "WRITEBACK_CACHE",
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CAP_NO_OPEN_SUPPORT: "NO_OPEN_SUPPORT",
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CAP_PARALLEL_DIROPS: "PARALLEL_DIROPS",
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CAP_POSIX_ACL: "POSIX_ACL",
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CAP_HANDLE_KILLPRIV: "HANDLE_KILLPRIV",
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CAP_ABORT_ERROR: "ABORT_ERROR",
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CAP_MAX_PAGES: "MAX_PAGES",
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CAP_CACHE_SYMLINKS: "CACHE_SYMLINKS",
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CAP_NO_OPENDIR_SUPPORT: "NO_OPENDIR_SUPPORT",
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CAP_EXPLICIT_INVAL_DATA: "EXPLICIT_INVAL_DATA",
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}
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releaseFlagNames = map[int64]string{
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RELEASE_FLUSH: "FLUSH",
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}
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openFlagNames = map[int64]string{
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int64(os.O_WRONLY): "WRONLY",
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int64(os.O_RDWR): "RDWR",
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int64(os.O_APPEND): "APPEND",
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int64(syscall.O_ASYNC): "ASYNC",
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int64(os.O_CREATE): "CREAT",
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int64(os.O_EXCL): "EXCL",
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int64(syscall.O_NOCTTY): "NOCTTY",
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int64(syscall.O_NONBLOCK): "NONBLOCK",
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int64(os.O_SYNC): "SYNC",
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int64(os.O_TRUNC): "TRUNC",
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int64(syscall.O_CLOEXEC): "CLOEXEC",
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int64(syscall.O_DIRECTORY): "DIRECTORY",
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}
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fuseOpenFlagNames = map[int64]string{
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FOPEN_DIRECT_IO: "DIRECT",
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FOPEN_KEEP_CACHE: "CACHE",
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FOPEN_NONSEEKABLE: "NONSEEK",
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FOPEN_CACHE_DIR: "CACHE_DIR",
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FOPEN_STREAM: "STREAM",
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}
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accessFlagName = map[int64]string{
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X_OK: "x",
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W_OK: "w",
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R_OK: "r",
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}
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)
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func flagString(names map[int64]string, fl int64, def string) string {
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s := []string{}
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for k, v := range names {
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if fl&k != 0 {
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s = append(s, v)
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fl ^= k
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}
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}
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if len(s) == 0 && def != "" {
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s = []string{def}
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}
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if fl != 0 {
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s = append(s, fmt.Sprintf("0x%x", fl))
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}
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return strings.Join(s, ",")
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}
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func (in *ForgetIn) string() string {
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return fmt.Sprintf("{Nlookup=%d}", in.Nlookup)
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}
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func (in *_BatchForgetIn) string() string {
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return fmt.Sprintf("{Count=%d}", in.Count)
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}
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func (in *MkdirIn) string() string {
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return fmt.Sprintf("{0%o (0%o)}", in.Mode, in.Umask)
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}
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func (in *Rename1In) string() string {
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return fmt.Sprintf("{i%d}", in.Newdir)
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}
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func (in *RenameIn) string() string {
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return fmt.Sprintf("{i%d %x}", in.Newdir, in.Flags)
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}
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func (in *SetAttrIn) string() string {
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s := []string{}
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if in.Valid&FATTR_MODE != 0 {
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s = append(s, fmt.Sprintf("mode 0%o", in.Mode))
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}
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if in.Valid&FATTR_UID != 0 {
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s = append(s, fmt.Sprintf("uid %d", in.Uid))
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}
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if in.Valid&FATTR_GID != 0 {
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s = append(s, fmt.Sprintf("gid %d", in.Gid))
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}
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if in.Valid&FATTR_SIZE != 0 {
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s = append(s, fmt.Sprintf("size %d", in.Size))
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}
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if in.Valid&FATTR_ATIME != 0 {
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s = append(s, fmt.Sprintf("atime %d.%09d", in.Atime, in.Atimensec))
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}
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if in.Valid&FATTR_MTIME != 0 {
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s = append(s, fmt.Sprintf("mtime %d.%09d", in.Mtime, in.Mtimensec))
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}
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if in.Valid&FATTR_FH != 0 {
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s = append(s, fmt.Sprintf("fh %d", in.Fh))
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}
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// TODO - FATTR_ATIME_NOW = (1 << 7), FATTR_MTIME_NOW = (1 << 8), FATTR_LOCKOWNER = (1 << 9)
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return fmt.Sprintf("{%s}", strings.Join(s, ", "))
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}
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func (in *ReleaseIn) string() string {
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return fmt.Sprintf("{Fh %d %s %s L%d}",
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in.Fh, flagString(openFlagNames, int64(in.Flags), ""),
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flagString(releaseFlagNames, int64(in.ReleaseFlags), ""),
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in.LockOwner)
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}
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func (in *OpenIn) string() string {
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return fmt.Sprintf("{%s}", flagString(openFlagNames, int64(in.Flags), "O_RDONLY"))
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}
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func (in *OpenOut) string() string {
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return fmt.Sprintf("{Fh %d %s}", in.Fh,
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flagString(fuseOpenFlagNames, int64(in.OpenFlags), ""))
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}
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func (in *InitIn) string() string {
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return fmt.Sprintf("{%d.%d Ra 0x%x %s}",
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in.Major, in.Minor, in.MaxReadAhead,
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flagString(initFlagNames, int64(in.Flags), ""))
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}
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func (o *InitOut) string() string {
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return fmt.Sprintf("{%d.%d Ra 0x%x %s %d/%d Wr 0x%x Tg 0x%x}",
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o.Major, o.Minor, o.MaxReadAhead,
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flagString(initFlagNames, int64(o.Flags), ""),
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o.CongestionThreshold, o.MaxBackground, o.MaxWrite,
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o.TimeGran)
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}
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func (s *FsyncIn) string() string {
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return fmt.Sprintf("{Fh %d Flags %x}", s.Fh, s.FsyncFlags)
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}
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func (in *SetXAttrIn) string() string {
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return fmt.Sprintf("{sz %d f%o}", in.Size, in.Flags)
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}
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func (in *GetXAttrIn) string() string {
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return fmt.Sprintf("{sz %d}", in.Size)
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}
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func (o *GetXAttrOut) string() string {
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return fmt.Sprintf("{sz %d}", o.Size)
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}
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func (in *AccessIn) string() string {
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return fmt.Sprintf("{u=%d g=%d %s}",
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in.Uid,
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in.Gid,
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flagString(accessFlagName, int64(in.Mask), ""))
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}
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func (in *FlushIn) string() string {
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return fmt.Sprintf("{Fh %d}", in.Fh)
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}
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func (o *AttrOut) string() string {
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return fmt.Sprintf(
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"{tA=%gs %v}",
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ft(o.AttrValid, o.AttrValidNsec), &o.Attr)
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}
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// ft converts (seconds , nanoseconds) -> float(seconds)
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func ft(tsec uint64, tnsec uint32) float64 {
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return float64(tsec) + float64(tnsec)*1E-9
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}
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// Returned by LOOKUP
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func (o *EntryOut) string() string {
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return fmt.Sprintf("{n%d g%d tE=%gs tA=%gs %v}",
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o.NodeId, o.Generation, ft(o.EntryValid, o.EntryValidNsec),
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ft(o.AttrValid, o.AttrValidNsec), &o.Attr)
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}
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func (o *CreateOut) string() string {
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return fmt.Sprintf("{n%d g%d %v %v}", o.NodeId, o.Generation, &o.EntryOut, &o.OpenOut)
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}
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func (o *StatfsOut) string() string {
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return fmt.Sprintf(
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"{blocks (%d,%d)/%d files %d/%d bs%d nl%d frs%d}",
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o.Bfree, o.Bavail, o.Blocks, o.Ffree, o.Files,
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o.Bsize, o.NameLen, o.Frsize)
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}
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func (o *NotifyInvalEntryOut) string() string {
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return fmt.Sprintf("{parent i%d sz %d}", o.Parent, o.NameLen)
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}
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func (o *NotifyInvalInodeOut) string() string {
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return fmt.Sprintf("{i%d [%d +%d)}", o.Ino, o.Off, o.Length)
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}
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func (o *NotifyInvalDeleteOut) string() string {
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return fmt.Sprintf("{parent i%d ch i%d sz %d}", o.Parent, o.Child, o.NameLen)
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}
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func (o *NotifyStoreOut) string() string {
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return fmt.Sprintf("{n%d [%d +%d)}", o.Nodeid, o.Offset, o.Size)
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}
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func (o *NotifyRetrieveOut) string() string {
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return fmt.Sprintf("{> %d: n%d [%d +%d)}", o.NotifyUnique, o.Nodeid, o.Offset, o.Size)
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}
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func (i *NotifyRetrieveIn) string() string {
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return fmt.Sprintf("{[%d +%d)}", i.Offset, i.Size)
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}
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func (f *FallocateIn) string() string {
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return fmt.Sprintf("{Fh %d [%d +%d) mod 0%o}",
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f.Fh, f.Offset, f.Length, f.Mode)
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}
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func (f *LinkIn) string() string {
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return fmt.Sprintf("{Oldnodeid: n%d}", f.Oldnodeid)
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}
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func (o *WriteOut) string() string {
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return fmt.Sprintf("{%db }", o.Size)
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}
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func (i *CopyFileRangeIn) string() string {
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return fmt.Sprintf("{Fh %d [%d +%d) => n%d Fh %d [%d, %d)}",
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i.FhIn, i.OffIn, i.Len, i.NodeIdOut, i.FhOut, i.OffOut, i.Len)
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}
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func (in *InterruptIn) string() string {
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return fmt.Sprintf("{ix %d}", in.Unique)
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}
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var seekNames = map[uint32]string{
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0: "SET",
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1: "CUR",
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2: "END",
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3: "DATA",
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4: "HOLE",
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}
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func (in *LseekIn) string() string {
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return fmt.Sprintf("{Fh %d [%s +%d)}", in.Fh,
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seekNames[in.Whence], in.Offset)
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}
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func (o *LseekOut) string() string {
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return fmt.Sprintf("{%d}", o.Offset)
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}
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// Print pretty prints FUSE data types for kernel communication
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func Print(obj interface{}) string {
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t, ok := obj.(interface {
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string() string
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})
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if ok {
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return t.string()
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}
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return fmt.Sprintf("%T: %v", obj, obj)
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}
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