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Shaded version of DataStax Java Driver for Apache Cassandra
package jnr.posix;
import jnr.constants.Constant;
import jnr.constants.platform.Errno;
import jnr.constants.platform.Fcntl;
import jnr.constants.platform.Sysconf;
import jnr.ffi.*;
import jnr.ffi.byref.NumberByReference;
import jnr.ffi.mapper.FromNativeContext;
import jnr.ffi.mapper.FromNativeConverter;
import jnr.ffi.mapper.ToNativeContext;
import jnr.ffi.mapper.ToNativeConverter;
import jnr.posix.util.Java5ProcessMaker;
import jnr.posix.util.MethodName;
import jnr.posix.util.ProcessMaker;
import java.io.FileDescriptor;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import jnr.constants.platform.Signal;
public abstract class BaseNativePOSIX extends NativePOSIX implements POSIX {
private final LibC libc;
protected final POSIXHandler handler;
protected final JavaLibCHelper helper;
protected final Map signalHandlers = new HashMap();
protected BaseNativePOSIX(LibCProvider libcProvider, POSIXHandler handler) {
this.handler = handler;
this.libc = libcProvider.getLibC();
this.helper = new JavaLibCHelper(handler);
}
public ProcessMaker newProcessMaker(String... command) {
return new Java5ProcessMaker(handler, command);
}
public ProcessMaker newProcessMaker() {
return new Java5ProcessMaker(handler);
}
public final LibC libc() {
return libc;
}
POSIXHandler handler() {
return handler;
}
protected T unimplementedNull() {
handler().unimplementedError(MethodName.getCallerMethodName());
return null;
}
protected int unimplementedInt() {
handler().unimplementedError(MethodName.getCallerMethodName());
return -1;
}
public int chmod(String filename, int mode) {
return libc().chmod(filename, mode);
}
public int fchmod(int fd, int mode) {
return libc().fchmod(fd, mode);
}
public int chown(String filename, int user, int group) {
return libc().chown(filename, user, group);
}
public int fchown(int fd, int user, int group) {
return libc().fchown(fd, user, group);
}
public CharSequence crypt(CharSequence key, CharSequence salt) {
return libc().crypt(key, salt);
}
public byte[] crypt(byte[] key, byte[] salt) {
Pointer ptr = libc().crypt(key, salt);
if (ptr == null) return null;
int end = ptr.indexOf(0, (byte)0);
byte[] bytes = new byte[end + 1];
ptr.get(0, bytes, 0, end);
return bytes;
}
public int exec(String path, String... args) {
handler.unimplementedError("exec unimplemented");
return -1;
}
public int exec(String path, String[] args, String[] envp) {
handler.unimplementedError("exec unimplemented");
return -1;
}
public int execv(String path, String[] args) {
return libc().execv(path, args);
}
public int execve(String path, String[] args, String[] env) {
return libc().execve(path, args, env);
}
public FileStat fstat(FileDescriptor fileDescriptor) {
FileStat stat = allocateStat();
if (fstat(fileDescriptor, stat) < 0) handler.error(Errno.valueOf(errno()), "fstat", "" + helper.getfd(fileDescriptor));
return stat;
}
public FileStat fstat(int fd) {
FileStat stat = allocateStat();
if (fstat(fd, stat) < 0) handler.error(Errno.valueOf(errno()), "fstat", "" + fd);
return stat;
}
public int fstat(FileDescriptor fileDescriptor, FileStat stat) {
int fd = helper.getfd(fileDescriptor);
return libc().fstat(fd, stat);
}
public int fstat(int fd, FileStat stat) {
return libc().fstat(fd, stat);
}
public Pointer environ() {
return getRuntime().getMemoryManager().newPointer(libc().environ().get());
}
public String getenv(String envName) {
return libc().getenv(envName);
}
public int getegid() {
return libc().getegid();
}
public int geteuid() {
return libc().geteuid();
}
public int getgid() {
return libc().getgid();
}
public int getdtablesize() {
return libc().getdtablesize();
}
public String getlogin() {
return libc().getlogin();
}
public int getpgid() {
return libc().getpgid();
}
public int getpgrp() {
return libc().getpgrp();
}
public int getpid() {
return libc().getpid();
}
public int getppid() {
return libc().getppid();
}
public Passwd getpwent() {
return libc().getpwent();
}
public Passwd getpwuid(int which) {
return libc().getpwuid(which);
}
public Passwd getpwnam(String which) {
return libc().getpwnam(which);
}
public Group getgrent() {
return libc().getgrent();
}
public Group getgrgid(int which) {
return libc().getgrgid(which);
}
public Group getgrnam(String which) {
return libc().getgrnam(which);
}
public int setpwent() {
return libc().setpwent();
}
public int endpwent() {
return libc().endpwent();
}
public int setgrent() {
return libc().setgrent();
}
public int endgrent() {
return libc().endgrent();
}
public int getuid() {
return libc().getuid();
}
public int getrlimit(int resource, RLimit rlim) {
return libc().getrlimit(resource, rlim);
}
public int getrlimit(int resource, Pointer rlim) {
return libc().getrlimit(resource, rlim);
}
public RLimit getrlimit(int resource) {
RLimit rlim = new DefaultNativeRLimit(getRuntime());
if (getrlimit(resource, rlim) < 0) handler.error(Errno.valueOf(errno()), "rlim");
return rlim;
}
public int setrlimit(int resource, RLimit rlim) {
return libc().setrlimit(resource, rlim);
}
public int setrlimit(int resource, Pointer rlim) {
return libc().setrlimit(resource, rlim);
}
public int setrlimit(int resource, long rlimCur, long rlimMax) {
RLimit rlim = new DefaultNativeRLimit(getRuntime());
rlim.init(rlimCur, rlimMax);
return libc().setrlimit(resource, rlim);
}
public int setegid(int egid) {
return libc().setegid(egid);
}
public int seteuid(int euid) {
return libc().seteuid(euid);
}
public int setgid(int gid) {
return libc().setgid(gid);
}
public int getfd(FileDescriptor descriptor) {
return helper.getfd(descriptor);
}
public int getpgid(int pid) {
return libc().getpgid(pid);
}
public int setpgid(int pid, int pgid) {
return libc().setpgid(pid, pgid);
}
public int setpgrp(int pid, int pgrp) {
return libc().setpgrp(pid, pgrp);
}
public int setsid() {
return libc().setsid();
}
public int setuid(int uid) {
return libc().setuid(uid);
}
public int kill(int pid, int signal) {
return libc().kill(pid, signal);
}
public SignalHandler signal(Signal sig, final SignalHandler handler) {
synchronized (signalHandlers) {
SignalHandler old = signalHandlers.get(sig);
long result = libc().signal(sig.intValue(), new LibC.LibCSignalHandler() {
public void signal(int sig) {
handler.handle(sig);
}
});
if (result != -1) {
signalHandlers.put(sig, handler);
}
return old;
}
}
public int lchmod(String filename, int mode) {
try {
return libc().lchmod(filename, mode);
} catch (UnsatisfiedLinkError ule) {
return unimplementedInt();
}
}
public int lchown(String filename, int user, int group) {
try {
return libc().lchown(filename, user, group);
} catch (UnsatisfiedLinkError ule) {
return unimplementedInt();
}
}
public int link(String oldpath, String newpath) {
return libc().link(oldpath, newpath);
}
public FileStat lstat(String path) {
FileStat stat = allocateStat();
if (lstat(path, stat) < 0) handler.error(Errno.valueOf(errno()), "lstat", path);
return stat;
}
public int lstat(String path, FileStat stat) {
return libc().lstat(path, stat);
}
public int mkdir(String path, int mode) {
int res = libc().mkdir(path, mode);
if (res < 0) {
int errno = errno();
handler.error(Errno.valueOf(errno), "mkdir", path);
}
return res;
}
public int rmdir(String path) {
int res = libc().rmdir(path);
if (res < 0) handler.error(Errno.valueOf(errno()), "rmdir", path);
return res;
}
public int setenv(String envName, String envValue, int overwrite) {
return libc().setenv(envName, envValue, overwrite);
}
public FileStat stat(String path) {
FileStat stat = allocateStat();
if (stat(path, stat) < 0) handler.error(Errno.valueOf(errno()), "stat", path);
return stat;
}
public int stat(String path, FileStat stat) {
return libc().stat(path, stat);
}
public int symlink(String oldpath, String newpath) {
return libc().symlink(oldpath, newpath);
}
public String readlink(String oldpath) throws IOException {
// TODO: this should not be hardcoded to 256 bytes
ByteBuffer buffer = ByteBuffer.allocate(256);
int result = libc().readlink(oldpath, buffer, buffer.capacity());
if (result == -1) return null;
buffer.position(0);
buffer.limit(result);
return Charset.forName("ASCII").decode(buffer).toString();
}
public int readlink(CharSequence path, byte[] buf, int bufsize) {
return libc().readlink(path, buf, bufsize);
}
public int readlink(CharSequence path, ByteBuffer buf, int bufsize) {
return libc().readlink(path, buf, bufsize);
}
public int readlink(CharSequence path, Pointer bufPtr, int bufsize) {
return libc().readlink(path, bufPtr, bufsize);
}
public int unsetenv(String envName) {
return libc().unsetenv(envName);
}
public int umask(int mask) {
return libc().umask(mask);
}
public int utimes(String path, long[] atimeval, long[] mtimeval) {
Timeval[] times = null;
if (atimeval != null && mtimeval != null) {
times = Struct.arrayOf(getRuntime(), DefaultNativeTimeval.class, 2);
times[0].setTime(atimeval);
times[1].setTime(mtimeval);
}
return libc().utimes(path, times);
}
public int utimes(String path, Pointer times) {
return libc().utimes(path, times);
}
public int futimes(int fd, long[] atimeval, long[] mtimeval) {
Timeval[] times = null;
if (atimeval != null && mtimeval != null) {
times = Struct.arrayOf(getRuntime(), DefaultNativeTimeval.class, 2);
times[0].setTime(atimeval);
times[1].setTime(mtimeval);
}
return libc().futimes(fd, times);
}
public int fork() {
return libc().fork();
}
public int waitpid(int pid, int[] status, int flags) {
return waitpid((long)pid, status, flags);
}
public int waitpid(long pid, int[] status, int flags) {
return libc().waitpid(pid, status, flags);
}
public int wait(int[] status) {
return libc().wait(status);
}
public int getpriority(int which, int who) {
return libc().getpriority(which, who);
}
public int setpriority(int which, int who, int prio) {
return libc().setpriority(which, who, prio);
}
public boolean isatty(FileDescriptor fd) {
return libc().isatty(helper.getfd(fd)) != 0;
}
public int errno() {
return LastError.getLastError(getRuntime());
}
public void errno(int value) {
LastError.setLastError(getRuntime(), value);
}
public int chdir(String path) {
return libc().chdir(path);
}
public boolean isNative() {
return true;
}
public long posix_spawnp(String path, Collection fileActions,
CharSequence[] argv, CharSequence[] envp) {
return posix_spawnp(path, fileActions, null, argv, envp);
}
public long posix_spawnp(String path, Collection fileActions,
Collection argv, Collection envp) {
return posix_spawnp(path, fileActions, null, argv, envp);
}
public long posix_spawnp(String path, Collection fileActions,
Collection spawnAttributes,
Collection argv, Collection envp) {
CharSequence[] nativeArgv = new CharSequence[argv.size()];
argv.toArray(nativeArgv);
CharSequence[] nativeEnv = new CharSequence[envp.size()];
envp.toArray(nativeEnv);
return posix_spawnp(path, fileActions, spawnAttributes, nativeArgv, nativeEnv);
}
public long posix_spawnp(String path, Collection fileActions,
Collection spawnAttributes,
CharSequence[] argv, CharSequence[] envp) {
// AbstractNumberReference pid = getRuntime().findType(TypeAlias.pid_t).size() == 4
// ? new IntByReference(-1) : new LongLongByReference(-1);
NumberByReference pid = new NumberByReference(TypeAlias.pid_t);
Pointer nativeFileActions = fileActions != null && !fileActions.isEmpty() ? nativeFileActions(fileActions) : null;
Pointer nativeSpawnAttributes = spawnAttributes != null && !spawnAttributes.isEmpty() ? nativeSpawnAttributes(spawnAttributes) : null;
long result;
try {
result = ((UnixLibC) libc()).posix_spawnp(pid, path, nativeFileActions, nativeSpawnAttributes, argv, envp);
} finally {
if (nativeFileActions != null) ((UnixLibC) libc()).posix_spawn_file_actions_destroy(nativeFileActions);
if (nativeSpawnAttributes != null) ((UnixLibC) libc()).posix_spawnattr_destroy(nativeSpawnAttributes);
}
if (result != 0) return -1; // result will be errno, but we can't indicate error because we return pid
return pid.longValue();
}
public int flock(int fd, int mode) {
return libc().flock(fd, mode);
}
public int dup(int fd) {
return libc().dup(fd);
}
public int dup2(int oldFd, int newFd) {
return libc().dup2(oldFd, newFd);
}
public int fcntlInt(int fd, Fcntl fcntl, int arg) {
return libc().fcntl(fd, fcntl.intValue(), arg);
}
public int fcntl(int fd, Fcntl fcntl) {
return libc().fcntl(fd, fcntl.intValue());
}
public int fcntl(int fd, Fcntl fcntl, int... arg) {
return libc().fcntl(fd, fcntl.intValue());
}
public int access(CharSequence path, int amode) {
return libc().access(path, amode);
}
public int close(int fd) {
return libc().close(fd);
}
private Pointer nativeFileActions(Collection fileActions) {
Pointer nativeFileActions = Memory.allocateDirect(getRuntime(), 128);
((UnixLibC) libc()).posix_spawn_file_actions_init(nativeFileActions);
for (SpawnFileAction action : fileActions) {
action.act(this, nativeFileActions);
}
return nativeFileActions;
}
private Pointer nativeSpawnAttributes(Collection spawnAttributes) {
Pointer nativeSpawnAttributes = Memory.allocateDirect(getRuntime(), 128);
((UnixLibC) libc()).posix_spawnattr_init(nativeSpawnAttributes);
for (SpawnAttribute action : spawnAttributes) {
action.set(this, nativeSpawnAttributes);
}
return nativeSpawnAttributes;
}
public abstract FileStat allocateStat();
public long sysconf(Sysconf name) {
switch (name) {
case _SC_CLK_TCK:
return JavaTimes.HZ;
default:
errno(Errno.EOPNOTSUPP.intValue());
return -1;
}
}
public Times times() {
return new JavaTimes();
}
public int unlink(CharSequence path) {
return libc().unlink(path);
}
public int open(CharSequence path, int flags, int perm) {
return libc().open(path, flags, perm);
}
public int read(int fd, byte[] buf, int n) {
return libc().read(fd, buf, n);
}
public int write(int fd, byte[] buf, int n) {
return libc().write(fd, buf, n);
}
public int read(int fd, ByteBuffer buf, int n) {
return libc().read(fd, buf, n);
}
public int write(int fd, ByteBuffer buf, int n) {
return libc().write(fd, buf, n);
}
public int pread(int fd, byte[] buf, int n, int offset) {
return libc().pread(fd, buf, n, offset);
}
public int pwrite(int fd, byte[] buf, int n, int offset) {
return libc().pwrite(fd, buf, n, offset);
}
public int pread(int fd, ByteBuffer buf, int n, int offset) {
return libc().pread(fd, buf, n, offset);
}
public int pwrite(int fd, ByteBuffer buf, int n, int offset) {
return libc().pwrite(fd, buf, n, offset);
}
public int lseek(int fd, long offset, int whence) {
return libc().lseek(fd, offset, whence);
}
public int pipe(int[] fds) {
return libc().pipe(fds);
}
public int socketpair(int domain, int type, int protocol, int[] fds) {
return libc().socketpair(domain, type, protocol, fds);
}
public int sendmsg(int socket, MsgHdr message, int flags) {
return libc().sendmsg( socket, message, flags );
}
public int recvmsg(int socket, MsgHdr message, int flags) {
return libc().recvmsg(socket, message, flags);
}
public int truncate(CharSequence path, long length) {
return libc().truncate(path, length);
}
public int ftruncate(int fd, long offset) {
return libc().ftruncate(fd, offset);
}
public int rename(CharSequence oldName, CharSequence newName) {
return libc().rename(oldName, newName);
}
public String getcwd() {
byte[] cwd = new byte[1024];
long result = libc().getcwd(cwd, 1024);
if (result == -1) return null;
int len = 0;
for (; len < 1024; len++) if (cwd[len] == 0) break;
return new String(cwd, 0, len);
}
public int fsync(int fd) {
return libc().fsync(fd);
}
public int fdatasync(int fd) {
return libc().fdatasync(fd);
}
public static abstract class PointerConverter implements FromNativeConverter {
public Class nativeType() {
return Pointer.class;
}
}
public static final PointerConverter GROUP = new PointerConverter() {
public Object fromNative(Object arg, FromNativeContext ctx) {
return arg != null ? new DefaultNativeGroup((Pointer) arg) : null;
}
};
public static final ToNativeConverter FileStatConverter = new ToNativeConverter() {
public Pointer toNative(FileStat value, ToNativeContext context) {
if (value instanceof BaseFileStat) {
return ((BaseFileStat) value).memory;
} else if (value instanceof Struct) {
return Struct.getMemory((Struct) value);
} else if (value == null) {
return null;
}
throw new IllegalArgumentException("instance of " + value.getClass() + " is not a struct");
}
public Class nativeType() {
return Pointer.class;
}
};
public static final ToNativeConverter TimesConverter = new ToNativeConverter() {
public Pointer toNative(NativeTimes value, ToNativeContext context) {
return value.memory;
}
public Class nativeType() {
return Pointer.class;
}
};
public static final ToNativeConverter ConstantConverter = new ToNativeConverter() {
public Integer toNative(Constant value, ToNativeContext context) {
return value.intValue();
}
public Class nativeType() {
return Integer.class;
}
};
public static final ToNativeConverter MsgHdrConverter = new ToNativeConverter() {
public Pointer toNative(MsgHdr value, ToNativeContext context) {
if ( value instanceof BaseMsgHdr ) {
return ((BaseMsgHdr) value).memory;
} else if ( value instanceof Struct ) {
return Struct.getMemory((Struct) value);
} else if ( value == null ) {
return null;
}
throw new IllegalArgumentException("instance of " + value.getClass() + " is not a struct");
}
public Class nativeType() {
return Pointer.class;
}
};
}
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