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Commit bc9748ee authored by Brad Fitzpatrick's avatar Brad Fitzpatrick
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syscall: make pwd process-wide on Plan 9 

On Plan 9, the pwd is apparently per-thread not per process. That
means different goroutines saw different current directories, even
changing within a goroutine as they were scheduled.

Instead, track the the process-wide pwd protected by a mutex in the
syscall package and set the current goroutine thread's pwd to the
correct once at critical points.

Fixes #9428

Change-Id: I928e90886355be4a95c2be834f5883e2b50fc0cf
Reviewed-on: https://go-review.googlesource.com/6350Reviewed-by: 's avatarDavid du Colombier <0intro@gmail.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
parent 2adc3bd6
Hide whitespace changes
Inline Side-by-side
Showing with 304 additions and 193 deletions
src/syscall/env_plan9.go
View file @ bc9748ee
......@@ -16,7 +16,7 @@ var (
)
func readenv(key string) (string, error) {
fd, err := Open("/env/"+key, O_RDONLY)
fd, err := open("/env/"+key, O_RDONLY)
if err != nil {
return "", err
}
......@@ -35,7 +35,7 @@ func readenv(key string) (string, error) {
}
func writeenv(key, value string) error {
fd, err := Create("/env/"+key, O_RDWR, 0666)
fd, err := create("/env/"+key, O_RDWR, 0666)
if err != nil {
return err
}
......@@ -86,7 +86,7 @@ func Unsetenv(key string) error {
}
func Environ() []string {
fd, err := Open("/env", O_RDONLY)
fd, err := open("/env", O_RDONLY)
if err != nil {
return nil
}
......
src/syscall/exec_plan9.go
View file @ bc9748ee
......@@ -396,9 +396,15 @@ func forkExec(argv0 string, argv []string, attr *ProcAttr) (pid int, err error)
return 0, err
}
destDir := attr.Dir
if destDir == "" {
wdmu.Lock()
destDir = wdStr
wdmu.Unlock()
}
var dir *byte
if attr.Dir != "" {
dir, err = BytePtrFromString(attr.Dir)
if destDir != "" {
dir, err = BytePtrFromString(destDir)
if err != nil {
return 0, err
}
......
src/syscall/pwd_plan9.go 0 → 100644
View file @ bc9748ee
// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// The working directory in Plan 9 is effectively per P, so different
// goroutines and even the same goroutine as it's rescheduled on
// different Ps can see different working directories.
//
// Instead, track a Go process-wide intent of the current working directory,
// and switch to it at important points.
package syscall
import "sync"
var (
wdmu sync.Mutex // guards following
wdSet bool
wdStr string
)
func Fixwd() {
wdmu.Lock()
defer wdmu.Unlock()
fixwdLocked()
}
func fixwdLocked() {
if !wdSet {
return
}
wd, err := getwd()
if err != nil {
return
}
if wd == wdStr {
return
}
if err := chdir(wdStr); err != nil {
return
}
}
// goroutine-specific getwd
func getwd() (wd string, err error) {
fd, err := open(".", O_RDONLY)
if err != nil {
return "", err
}
defer Close(fd)
return Fd2path(fd)
}
func Getwd() (wd string, err error) {
wdmu.Lock()
defer wdmu.Unlock()
if wdSet {
return wdStr, nil
}
wd, err = getwd()
if err != nil {
return
}
wdSet = true
wdStr = wd
return wd, nil
}
func Chdir(path string) error {
wdmu.Lock()
defer wdmu.Unlock()
if err := chdir(path); err != nil {
return err
}
wd, err := getwd()
if err != nil {
return err
}
wdSet = true
wdStr = wd
return nil
}
src/syscall/syscall_plan9.go
View file @ bc9748ee
......@@ -129,17 +129,6 @@ func Write(fd int, p []byte) (n int, err error) {
var ioSync int64
func Getwd() (wd string, err error) {
fd, e := Open(".", O_RDONLY)
if e != nil {
return "", e
}
defer Close(fd)
return Fd2path(fd)
}
//sys fd2path(fd int, buf []byte) (err error)
func Fd2path(fd int) (path string, err error) {
var buf [512]byte
......@@ -242,6 +231,7 @@ func Await(w *Waitmsg) (err error) {
}
func Unmount(name, old string) (err error) {
Fixwd()
oldp, err := BytePtrFromString(old)
if err != nil {
return err
......@@ -325,17 +315,47 @@ func Getgroups() (gids []int, err error) {
return make([]int, 0), nil
}
//sys open(path string, mode int) (fd int, err error)
func Open(path string, mode int) (fd int, err error) {
Fixwd()
return open(path, mode)
}
//sys create(path string, mode int, perm uint32) (fd int, err error)
func Create(path string, mode int, perm uint32) (fd int, err error) {
Fixwd()
return create(path, mode, perm)
}
//sys remove(path string) (err error)
func Remove(path string) error {
Fixwd()
return remove(path)
}
//sys stat(path string, edir []byte) (n int, err error)
func Stat(path string, edir []byte) (n int, err error) {
Fixwd()
return stat(path, edir)
}
//sys bind(name string, old string, flag int) (err error)
func Bind(name string, old string, flag int) (err error) {
Fixwd()
return bind(name, old, flag)
}
//sys wstat(path string, edir []byte) (err error)
func Wstat(path string, edir []byte) (err error) {
Fixwd()
return wstat(path, edir)
}
//sys chdir(path string) (err error)
//sys Dup(oldfd int, newfd int) (fd int, err error)
//sys Open(path string, mode int) (fd int, err error)
//sys Create(path string, mode int, perm uint32) (fd int, err error)
//sys Remove(path string) (err error)
//sys Pread(fd int, p []byte, offset int64) (n int, err error)
//sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
//sys Close(fd int) (err error)
//sys Chdir(path string) (err error)
//sys Bind(name string, old string, flag int) (err error)
//sys Mount(fd int, afd int, old string, flag int, aname string) (err error)
//sys Stat(path string, edir []byte) (n int, err error)
//sys Fstat(fd int, edir []byte) (n int, err error)
//sys Wstat(path string, edir []byte) (err error)
//sys Fwstat(fd int, edir []byte) (err error)
src/syscall/zsyscall_plan9_386.go
View file @ bc9748ee
......@@ -50,18 +50,7 @@ func await(s []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Dup(oldfd int, newfd int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
fd = int(r0)
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Open(path string, mode int) (fd int, err error) {
func open(path string, mode int) (fd int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -78,7 +67,7 @@ func Open(path string, mode int) (fd int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Create(path string, mode int, perm uint32) (fd int, err error) {
func create(path string, mode int, perm uint32) (fd int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -95,7 +84,7 @@ func Create(path string, mode int, perm uint32) (fd int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Remove(path string) (err error) {
func remove(path string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -111,14 +100,20 @@ func Remove(path string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pread(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
func stat(path string, edir []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
} else {
_p0 = unsafe.Pointer(&_zero)
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -128,25 +123,20 @@ func Pread(fd int, p []byte, offset int64) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p0 = unsafe.Pointer(&_zero)
func bind(name string, old string, flag int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(name)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
var _p1 *byte
_p1, err = BytePtrFromString(old)
if err != nil {
return
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Close(fd int) (err error) {
r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
......@@ -155,13 +145,19 @@ func Close(fd int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Chdir(path string) (err error) {
func wstat(path string, edir []byte) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
if int32(r0) == -1 {
err = e1
......@@ -171,20 +167,14 @@ func Chdir(path string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Bind(name string, old string, flag int) (err error) {
func chdir(path string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(name)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(old)
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
......@@ -193,20 +183,9 @@ func Bind(name string, old string, flag int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(old)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(aname)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
func Dup(oldfd int, newfd int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
fd = int(r0)
if int32(r0) == -1 {
err = e1
}
......@@ -215,20 +194,14 @@ func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Stat(path string, edir []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
func Pread(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p1 = unsafe.Pointer(&_zero)
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -238,14 +211,14 @@ func Stat(path string, edir []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fstat(fd int, edir []byte) (n int, err error) {
func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(edir) > 0 {
_p0 = unsafe.Pointer(&edir[0])
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -255,20 +228,47 @@ func Fstat(fd int, edir []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Wstat(path string, edir []byte) (err error) {
func Close(fd int) (err error) {
r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
_p0, err = BytePtrFromString(old)
if err != nil {
return
}
var _p1 unsafe.Pointer
var _p1 *byte
_p1, err = BytePtrFromString(aname)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fstat(fd int, edir []byte) (n int, err error) {
var _p0 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
_p0 = unsafe.Pointer(&edir[0])
} else {
_p1 = unsafe.Pointer(&_zero)
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
n = int(r0)
if int32(r0) == -1 {
err = e1
}
......
src/syscall/zsyscall_plan9_amd64.go
View file @ bc9748ee
......@@ -50,18 +50,7 @@ func await(s []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Dup(oldfd int, newfd int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
fd = int(r0)
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Open(path string, mode int) (fd int, err error) {
func open(path string, mode int) (fd int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -78,7 +67,7 @@ func Open(path string, mode int) (fd int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Create(path string, mode int, perm uint32) (fd int, err error) {
func create(path string, mode int, perm uint32) (fd int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -95,7 +84,7 @@ func Create(path string, mode int, perm uint32) (fd int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Remove(path string) (err error) {
func remove(path string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
......@@ -111,14 +100,20 @@ func Remove(path string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pread(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
func stat(path string, edir []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
} else {
_p0 = unsafe.Pointer(&_zero)
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -128,25 +123,20 @@ func Pread(fd int, p []byte, offset int64) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p0 = unsafe.Pointer(&_zero)
func bind(name string, old string, flag int) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(name)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
var _p1 *byte
_p1, err = BytePtrFromString(old)
if err != nil {
return
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Close(fd int) (err error) {
r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
......@@ -155,13 +145,19 @@ func Close(fd int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Chdir(path string) (err error) {
func wstat(path string, edir []byte) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
if int32(r0) == -1 {
err = e1
......@@ -171,20 +167,14 @@ func Chdir(path string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Bind(name string, old string, flag int) (err error) {
func chdir(path string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(name)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(old)
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
r0, _, e1 := Syscall(SYS_BIND, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(flag))
r0, _, e1 := Syscall(SYS_CHDIR, uintptr(unsafe.Pointer(_p0)), 0, 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
......@@ -193,20 +183,9 @@ func Bind(name string, old string, flag int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(old)
if err != nil {
return
}
var _p1 *byte
_p1, err = BytePtrFromString(aname)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
func Dup(oldfd int, newfd int) (fd int, err error) {
r0, _, e1 := Syscall(SYS_DUP, uintptr(oldfd), uintptr(newfd), 0)
fd = int(r0)
if int32(r0) == -1 {
err = e1
}
......@@ -215,20 +194,14 @@ func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Stat(path string, edir []byte) (n int, err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
func Pread(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p1 = unsafe.Pointer(&_zero)
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_STAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
r0, _, e1 := Syscall6(SYS_PREAD, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -238,14 +211,14 @@ func Stat(path string, edir []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fstat(fd int, edir []byte) (n int, err error) {
func Pwrite(fd int, p []byte, offset int64) (n int, err error) {
var _p0 unsafe.Pointer
if len(edir) > 0 {
_p0 = unsafe.Pointer(&edir[0])
if len(p) > 0 {
_p0 = unsafe.Pointer(&p[0])
} else {
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
r0, _, e1 := Syscall6(SYS_PWRITE, uintptr(fd), uintptr(_p0), uintptr(len(p)), uintptr(offset), uintptr(offset>>32), 0)
n = int(r0)
if int32(r0) == -1 {
err = e1
......@@ -255,20 +228,47 @@ func Fstat(fd int, edir []byte) (n int, err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Wstat(path string, edir []byte) (err error) {
func Close(fd int) (err error) {
r0, _, e1 := Syscall(SYS_CLOSE, uintptr(fd), 0, 0)
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Mount(fd int, afd int, old string, flag int, aname string) (err error) {
var _p0 *byte
_p0, err = BytePtrFromString(path)
_p0, err = BytePtrFromString(old)
if err != nil {
return
}
var _p1 unsafe.Pointer
var _p1 *byte
_p1, err = BytePtrFromString(aname)
if err != nil {
return
}
r0, _, e1 := Syscall6(SYS_MOUNT, uintptr(fd), uintptr(afd), uintptr(unsafe.Pointer(_p0)), uintptr(flag), uintptr(unsafe.Pointer(_p1)), 0)
use(unsafe.Pointer(_p0))
use(unsafe.Pointer(_p1))
if int32(r0) == -1 {
err = e1
}
return
}
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Fstat(fd int, edir []byte) (n int, err error) {
var _p0 unsafe.Pointer
if len(edir) > 0 {
_p1 = unsafe.Pointer(&edir[0])
_p0 = unsafe.Pointer(&edir[0])
} else {
_p1 = unsafe.Pointer(&_zero)
_p0 = unsafe.Pointer(&_zero)
}
r0, _, e1 := Syscall(SYS_WSTAT, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(edir)))
use(unsafe.Pointer(_p0))
r0, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(_p0), uintptr(len(edir)))
n = int(r0)
if int32(r0) == -1 {
err = e1
}
......
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