com.sun.squawk.platform.posix.natives
Class LibCImpl

java.lang.Object
  com.sun.squawk.platform.posix.natives.LibCImpl

All Implemented Interfaces:

Library, LibC

Direct Known Subclasses:

LibCImpl, LibCImpl, LibCImpl, LibCImpl

public abstract class LibCImpl
extends Object
implements LibC

Nested Class Summary

static class

LibCImpl.statImpl

Nested classes/interfaces inherited from interface com.sun.squawk.platform.posix.natives.LibC

LibC.stat

Field Summary

protected Function	closePtr
protected Function	fcntlPtr
protected Function	fstatPtr
protected Function	fsyncPtr
protected Function	lseekPtr
protected Function	openPtr
protected Function	readPtr
protected Function	statPtr
protected Function	unlinkPtr
protected Function	writePtr

Fields inherited from interface com.sun.squawk.platform.posix.natives.LibC

E2BIG, EACCES, EADDRINUSE, EADDRNOTAVAIL, EAFNOSUPPORT, EAGAIN, EALREADY, EBADF, EBADMSG, EBUSY, ECANCELED, ECHILD, ECONNABORTED, ECONNREFUSED, ECONNRESET, EDEADLK, EDESTADDRREQ, EDOM, EDQUOT, EEXIST, EFAULT, EFBIG, EHOSTUNREACH, EIDRM, EILSEQ, EINPROGRESS, EINTR, EINVAL, EIO, EISCONN, EISDIR, ELOOP, EMFILE, EMLINK, EMSGSIZE, EMULTIHOP, ENAMETOOLONG, ENETDOWN, ENETRESET, ENETUNREACH, ENFILE, ENOBUFS, ENODATA, ENODEV, ENOENT, ENOEXEC, ENOLCK, ENOLINK, ENOMEM, ENOMSG, ENOPROTOOPT, ENOSPC, ENOSR, ENOSTR, ENOSYS, ENOTCONN, ENOTDIR, ENOTEMPTY, ENOTSOCK, ENOTSUP, ENOTTY, ENXIO, EOPNOTSUPP, EOVERFLOW, EPERM, EPIPE, EPROTO, EPROTONOSUPPORT, EPROTOTYPE, ERANGE, EROFS, ESPIPE, ESRCH, ETIME, ETIMEDOUT, ETXTBSY, EWOULDBLOCK, EXDEV, F_DUPFD, F_GETFD, F_GETFL, F_SETFD, F_SETFL, INSTANCE, O_ACCMODE, O_APPEND, O_CREAT, O_EXCL, O_NONBLOCK, O_RDONLY, O_RDWR, O_SYNC, O_TRUNC, O_WRONLY, S_IFBLK, S_IFCHR, S_IFDIR, S_IFIFO, S_IFLNK, S_IFMT, S_IFREG, S_IFSOCK, S_IRGRP, S_IROTH, S_IRUSR, S_IRWXG, S_IRWXO, S_IRWXU, S_ISGID, S_ISUID, S_ISVTX, S_IWGRP, S_IWOTH, S_IWUSR, S_IXGRP, S_IXOTH, S_IXUSR, SEEK_CUR, SEEK_END, SEEK_SET

Constructor Summary

LibCImpl()

Method Summary

int	close(int arg0) delete a descriptor
int	fcntl(int arg0, int arg1, int arg2) provides for control over descriptors.
int	fstat(int arg0, LibC.stat arg1) Get information on the open file with file descriptor "fd".
int	fsync(int arg0) Flush output on a descriptor
int	lseek(int arg0, long arg1, int arg2) reposition read/write file offset
int	open(String arg0, int arg1, int arg2) open or create a file for reading or writing
int	read(int arg0, byte[] arg1, int arg2) read input
String	realName(String nominalName) Allow platforms to substitute different names.
int	stat(String arg0, LibC.stat arg1) Get information on the named "name".
int	unlink(String arg0) Remove the directory entry for name (may delete the file)
int	write(int arg0, byte[] arg1, int arg2) write output

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.sun.cldc.jna.Library

initConstInt

Field Detail

openPtr

protected final Function openPtr

statPtr

protected final Function statPtr

fcntlPtr

protected final Function fcntlPtr

writePtr

protected final Function writePtr

closePtr

protected final Function closePtr

readPtr

protected final Function readPtr

fstatPtr

protected final Function fstatPtr

fsyncPtr

protected final Function fsyncPtr

lseekPtr

protected final Function lseekPtr

unlinkPtr

protected final Function unlinkPtr

Constructor Detail

LibCImpl

public LibCImpl()

Method Detail

open

public int open(String arg0,
                int arg1,
                int arg2)

Description copied from interface: LibC

open or create a file for reading or writing

Specified by:

open in interface LibC

Parameters:

arg0 - String

arg1 - std libc open flags

arg2 - the mode for any created file

Returns:

If successful, returns a non-negative integer, termed a file descriptor. Returns -1 on failure, and sets errno to indicate the error.

stat

public int stat(String arg0,
                LibC.stat arg1)

Description copied from interface: LibC

Get information on the named "name".

Specified by:

stat in interface LibC

Parameters:

arg0 - String

arg1 - Stat structure that will be filled with the current values

Returns:

-1 is returned if an error occurs, otherwise zero is returned

fcntl

public int fcntl(int arg0,
                 int arg1,
                 int arg2)

Description copied from interface: LibC

provides for control over descriptors.

Specified by:

fcntl in interface LibC

Parameters:

arg0 - a descriptor to be operated on by cmd

arg1 - one of the cmd constants

Returns:

a value that depends on the cmd.

write

public int write(int arg0,
                 byte[] arg1,
                 int arg2)

Description copied from interface: LibC

write output

Specified by:

write in interface LibC

Parameters:

arg0 - file descriptor

arg1 - data buffer to write

arg2 - number of bytes to read

Returns:

the number of bytes which were written is returned. If error, -1 is returned and the global variable errno is set to indicate the error.

close

public int close(int arg0)

Description copied from interface: LibC

delete a descriptor

Specified by:

close in interface LibC

Parameters:

arg0 - a descriptor to be operated on by cmd

Returns:

Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and the global integer variable errno is set to indicate the error.

read

public int read(int arg0,
                byte[] arg1,
                int arg2)

Description copied from interface: LibC

read input

Specified by:

read in interface LibC

Parameters:

arg0 - file descriptor

arg1 - data buffer to read into

arg2 - number of bytes to read

Returns:

the number of bytes actually read is returned. Upon reading end-of-file, zero is returned. If error, a -1 is returned and the global variable errno is set to indicate the error

fstat

public int fstat(int arg0,
                 LibC.stat arg1)

Description copied from interface: LibC

Get information on the open file with file descriptor "fd".

Specified by:

fstat in interface LibC

Parameters:

arg0 - file descriptor

arg1 - Stat structure that will be filled with the current values

Returns:

-1 is returned if an error occurs, otherwise zero is returned

fsync

public int fsync(int arg0)

Description copied from interface: LibC

Flush output on a descriptor

Specified by:

fsync in interface LibC

Parameters:

arg0 - a descriptor to be flushed

Returns:

Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and the global integer variable errno is set to indicate the error.

lseek

public int lseek(int arg0,
                 long arg1,
                 int arg2)

Description copied from interface: LibC

reposition read/write file offset

Specified by:

lseek in interface LibC

Parameters:

arg0 - file descriptor

arg1 - the offset to seek to

arg2 - the kind of offset (SEEK_SET, SEEK_CUR, or SEEK_END)

Returns:

the resulting offset location as measured in bytes from the beginning of the file. If error, -1 is returned and errno is set to indicate the error.

unlink

public int unlink(String arg0)

Description copied from interface: LibC

Remove the directory entry for name (may delete the file)

Specified by:

unlink in interface LibC

Parameters:

arg0 - String

Returns:

If successful, returns a non-negative integer, termed a file descriptor. Returns -1 on failure, and sets errno to indicate the error.

realName

public String realName(String nominalName)

Allow platforms to substitute different names.

Parameters:

nominalName -

Returns:

the actual name for the platform