/usr/share/gocode/src/github.com/hanwen/go-fuse/fuse/pathfs/syscall_linux.go is in golang-github-hanwen-go-fuse-dev 0.0~git20171124.0.14c3015-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | // Copyright 2016 the Go-FUSE Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pathfs
import (
"bytes"
"syscall"
"unsafe"
)
var _zero uintptr
func getXAttr(path string, attr string, dest []byte) (value []byte, err error) {
sz, err := sysGetxattr(path, attr, dest)
for sz > cap(dest) && err == nil {
dest = make([]byte, sz)
sz, err = sysGetxattr(path, attr, dest)
}
if err != nil {
return nil, err
}
return dest[:sz], err
}
func listXAttr(path string) (attributes []string, err error) {
dest := make([]byte, 0)
sz, err := sysListxattr(path, dest)
if err != nil {
return nil, err
}
for sz > cap(dest) && err == nil {
dest = make([]byte, sz)
sz, err = sysListxattr(path, dest)
}
if sz == 0 {
return nil, err
}
// -1 to drop the final empty slice.
dest = dest[:sz-1]
attributesBytes := bytes.Split(dest, []byte{0})
attributes = make([]string, len(attributesBytes))
for i, v := range attributesBytes {
attributes[i] = string(v)
}
return attributes, err
}
// Below is cut & paste from std lib syscall, so gccgo 4.8.1 can
// compile this too.
func sysGetxattr(path string, attr string, dest []byte) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
var _p2 unsafe.Pointer
if len(dest) > 0 {
_p2 = unsafe.Pointer(&dest[0])
} else {
_p2 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), uintptr(_p2), uintptr(len(dest)), 0, 0)
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
func sysRemovexattr(path string, attr string) (err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 *byte
_p1, err = syscall.BytePtrFromString(attr)
if err != nil {
return
}
_, _, e1 := syscall.Syscall(syscall.SYS_REMOVEXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_p1)), 0)
if e1 != 0 {
err = e1
}
return
}
func sysListxattr(path string, dest []byte) (sz int, err error) {
var _p0 *byte
_p0, err = syscall.BytePtrFromString(path)
if err != nil {
return
}
var _p1 unsafe.Pointer
if len(dest) > 0 {
_p1 = unsafe.Pointer(&dest[0])
} else {
_p1 = unsafe.Pointer(&_zero)
}
r0, _, e1 := syscall.Syscall(syscall.SYS_LISTXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(_p1), uintptr(len(dest)))
sz = int(r0)
if e1 != 0 {
err = e1
}
return
}
func sysSetxattr(path string, attr string, val []byte, flag int) error {
return syscall.Setxattr(path, attr, val, flag)
}
const _AT_SYMLINK_NOFOLLOW = 0x100
// Linux kernel syscall utimensat(2)
//
// Needed to implement SetAttr on symlinks correctly as only utimensat provides
// AT_SYMLINK_NOFOLLOW.
func sysUtimensat(dirfd int, pathname string, times *[2]syscall.Timespec, flags int) (err error) {
// Null-terminated version of pathname
p0, err := syscall.BytePtrFromString(pathname)
if err != nil {
return err
}
_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT,
uintptr(dirfd), uintptr(unsafe.Pointer(p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
if e1 != 0 {
err = syscall.Errno(e1)
}
return
}
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