本文整理汇总了Golang中syscall.Pwrite函数的典型用法代码示例。如果您正苦于以下问题：Golang Pwrite函数的具体用法？Golang Pwrite怎么用？Golang Pwrite使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了Pwrite函数的9个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: Write
func (constor *Constor) Write(input *fuse.WriteIn, data []byte) (written uint32, code fuse.Status) {
constor.log("%d", input.Fh)
ptr := uintptr(input.Fh)
offset := input.Offset
F := constor.getfd(ptr)
if F == nil {
constor.error("F == nil")
return 0, fuse.EIO
}
inode, err := constor.inodemap.findInode(input.NodeId)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
if F.layer != 0 && inode.layer != 0 {
err = constor.copyup(inode)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
path, err := constor.dentrymap.getPath(inode.ino)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
pathl := Path.Join(constor.layers[0], path)
syscall.Close(F.fd)
fd, err := syscall.Open(pathl, F.flags, 0)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
F.fd = fd
F.layer = 0
constor.log("reset fd for %s", path)
} else if F.layer != 0 && inode.layer == 0 {
syscall.Close(F.fd)
path, err := constor.dentrymap.getPath(inode.ino)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
pathl := Path.Join(constor.layers[0] + path)
fd, err := syscall.Open(pathl, F.flags, 0)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
F.fd = fd
F.layer = 0
constor.log("reset fd for %s", path)
}
fd := F.fd
n, err := syscall.Pwrite(fd, data, int64(offset))
return uint32(n), fuse.ToStatus(err)
}示例2: Pwrite64
func (k *PosixKernel) Pwrite64(fd co.Fd, buf co.Buf, size co.Len, offset int64) uint64 {
p := make([]byte, size)
if err := buf.Unpack(p); err != nil {
return UINT64_MAX // FIXME
}
n, err := syscall.Pwrite(int(fd), p, offset)
if err != nil {
return Errno(err)
}
return uint64(n)
}示例3: Write
func (constor *Constor) Write(input *fuse.WriteIn, data []byte) (written uint32, code fuse.Status) {
constor.log("%d %d", input.Fh, len(data))
ptr := uintptr(input.Fh)
offset := input.Offset
wdata := data
F := constor.getfd(ptr)
if F == nil {
constor.error("F == nil")
return 0, fuse.EIO
}
if F.flags&syscall.O_DIRECT != 0 {
wdata = directio.AlignedBlock(len(data))
copy(wdata, data)
}
inode := constor.inodemap.findInodePtr(input.NodeId)
if inode == nil {
return 0, fuse.ENOENT
}
if F.layer != 0 && inode.layer != 0 {
err := constor.copyup(inode)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
path := constor.getPath(0, inode.id)
syscall.Close(F.fd)
fd, err := syscall.Open(path, F.flags, 0)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
F.fd = fd
F.layer = 0
constor.log("reset fd for %s", path)
} else if F.layer != 0 && inode.layer == 0 {
syscall.Close(F.fd)
path := constor.getPath(0, inode.id)
fd, err := syscall.Open(path, F.flags, 0)
if err != nil {
constor.error("%s", err)
return 0, fuse.ToStatus(err)
}
F.fd = fd
F.layer = 0
constor.log("reset fd for %s", path)
}
fd := F.fd
n, err := syscall.Pwrite(fd, wdata, int64(offset))
return uint32(n), fuse.ToStatus(err)
}示例4: WriteInt16
func (b Bone) WriteInt16(addr int, val uint16) error {
data := make([]byte, 2)
data[0] = byte((val) & 0x00FF)
data[1] = byte((val >> 8) & 0x00FF)
count, err := syscall.Pwrite(int(b), data, int64(addr))
if err != nil {
return err
}
if count != 2 {
return errors.New("wrong number of bytes written")
}
return nil
}示例5: WriteAt
// WriteAt writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an Error, if any.
// WriteAt returns a non-nil Error when n != len(b).
func (file *File) WriteAt(b []byte, off int64) (n int, err Error) {
if file == nil {
return 0, EINVAL
}
for len(b) > 0 {
m, e := syscall.Pwrite(file.fd, b, off)
if e != 0 {
err = &PathError{"write", file.name, Errno(e)}
break
}
n += m
b = b[m:]
off += int64(m)
}
return
}示例6: pwrite
// pwrite writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an error, if any.
// Since Plan 9 preserves message boundaries, never allow
// a zero-byte write.
func (f *File) pwrite(b []byte, off int64) (n int, err error) {
if len(b) == 0 {
return 0, nil
}
return syscall.Pwrite(f.fd, b, off)
}示例7: pwrite
// pwrite writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an error, if any.
func (f *File) pwrite(b []byte, off int64) (n int, err error) {
if needsMaxRW && len(b) > maxRW {
b = b[:maxRW]
}
return fixCount(syscall.Pwrite(f.fd, b, off))
}示例8: pwrite
// pwrite writes len(b) bytes to the File starting at byte offset off.
// It returns the number of bytes written and an error, if any.
func (f *File) pwrite(b []byte, off int64) (n int, err error) {
return syscall.Pwrite(f.fd, b, off)
}示例9: Write
func (s *SyncFile) Write(buf []byte, off int64) (n int, err error) {
s.mutex.Lock()
defer s.mutex.Unlock()
return syscall.Pwrite(int(s.fp.Fd()), buf, off)
}