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

java.lang.Object
  extended by 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
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2013 FRC Java API

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