bundles/org.eclipse.core.filesystem/natives/unix/unixfile.c - platform/eclipse.platform.resources - Git at Google

 /*******************************************************************************
  * Copyright (c) 2010 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <errno.h>
 #include <limits.h>
 #include <jni.h>

 #if defined MACOSX
 #include <CoreServices/CoreServices.h>
 #endif

 #include "unixfile.h"

 /* The lstat stat field st_mode. */
 static jfieldID attrs_st_mode;
 /* The lstat stat field st_size. */
 static jfieldID attrs_st_size;
 /* The lstat stat field st_mtime_sec. */
 static jfieldID attrs_st_mtime;
 /* The lstat stat field st_mtime_nsec divided by 1 000 000. Only filled on Linux based operating systems. */
 static jfieldID attrs_st_mtime_msec;
 /* Only filled on MACOSX. */
 static jfieldID attrs_st_flags;

 /*
  * Class:     Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_initializeStructStatFieldIDs
  * Method:    initializeStructStatFieldIDs
  * Signature: ()V
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_initializeStructStatFieldIDs
   (JNIEnv *env, jclass clazz)
 {
     jclass structStatClass = (*env)->FindClass(env, "org/eclipse/core/internal/filesystem/local/unix/StructStat");

     attrs_st_mode = (*env)->GetFieldID(env, structStatClass, "st_mode", "I");
     attrs_st_size = (*env)->GetFieldID(env, structStatClass, "st_size", "J");
     attrs_st_mtime = (*env)->GetFieldID(env, structStatClass, "st_mtime", "J");

 #ifdef MACOSX
     attrs_st_flags = (*env)->GetFieldID(env, structStatClass, "st_flags", "J");
 #endif

 #ifndef MACOSX
     attrs_st_mtime_msec = (*env)->GetFieldID(env, structStatClass, "st_mtime_msec", "J");
 #endif
 }

 /*
  * Get a null-terminated byte array from a java byte array. The returned bytearray
  * needs to be freed when not used anymore. Use free(result) to do that.
  */
 jbyte* getByteArray(JNIEnv *env, jbyteArray target)
 {
 	unsigned int len;
 	jbyte *temp, *result;

 	temp = (*env)->GetByteArrayElements(env, target, 0);
 	len = (*env)->GetArrayLength(env, target);
 	result = malloc((len + 1) * sizeof(jbyte));
 	memcpy(result, temp, len * sizeof(jbyte));
 	result[len] = '\0';
 	(*env)->ReleaseByteArrayElements(env, target, temp, 0);
 	return result;
 }

 /*
  * Fills StructStat object with data from struct stat.
  */
 jint convertStatToObject(JNIEnv *env, struct stat info, jobject stat_object)
 {
 	jclass cls;
 	jfieldID fid;
 	jboolean readOnly;

 	cls = (*env)->GetObjectClass(env, stat_object);
 	if (cls == 0) return -1;

 	if (attrs_st_mode == 0) return -1;
 	(*env)->SetIntField(env, stat_object, attrs_st_mode, info.st_mode);

 	if (attrs_st_size == 0) return -1;
 	(*env)->SetLongField(env, stat_object, attrs_st_size, info.st_size);

 	if (attrs_st_mtime == 0) return -1;
 	(*env)->SetLongField(env, stat_object, attrs_st_mtime, info.st_mtime);

 #ifndef MACOSX
 	if (attrs_st_mtime_msec == 0) return -1;
 	(*env)->SetLongField(env, stat_object, attrs_st_mtime_msec, (info.st_mtim.tv_nsec / (1000 * 1000)));
 #endif


 #ifdef MACOSX
 	if (attrs_st_flags == 0) return -1;
 	(*env)->SetLongField(env, stat_object, attrs_st_flags, info.st_flags);
 #endif

 	return 0;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    chmod
  * Signature: ([BI)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_chmod
   (JNIEnv *env, jclass clazz, jbyteArray path, jint mode)
 {
 	int code;
 	char *name;

 	name = (char*) getByteArray(env, path);
 	code = chmod(name, mode);
 	free(name);
 	return code;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    chflags
  * Signature: ([BI)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_chflags
   (JNIEnv *env, jclass clazz, jbyteArray path, jint flags)
 {
 #ifdef MACOSX
 	int code;
 	char *name;

 	name = (char*) getByteArray(env, path);
 	code = chflags(name, flags);
 	free(name);
 	return code;
 #else
 	return -1;
 #endif
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    stat
  * Signature: ([BLorg/eclipse/core/internal/filesystem/local/unix/StructStat;)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_stat
   (JNIEnv *env, jclass clazz, jbyteArray path, jobject buf)
 {
 	jint code;
 	char *name;
 	struct stat info;

 	name = (char*) getByteArray(env, path);
 	code = stat(name, &info);
 	free(name);
 	if (code != -1)
 		return convertStatToObject(env, info, buf);
 	else
 		return code;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    lstat
  * Signature: ([BLorg/eclipse/core/internal/filesystem/local/unix/StructStat;)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_lstat
   (JNIEnv *env, jclass clazz, jbyteArray path, jobject buf)
 {
 	jint code;
 	char *name;
 	struct stat info;

 	name = (char*) getByteArray(env, path);
 	code = lstat(name, &info);
 	free(name);
 	if (code != -1)
 		return convertStatToObject(env, info, buf);
 	else
 		return code;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    readlink
  * Signature: ([B[BJ)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_readlink
     (JNIEnv *env, jclass clazz, jbyteArray path, jbyteArray buf, jlong bufsiz) {
 	jint code;
  	jbyte *name;
  	int len;
 	char temp[PATH_MAX+1];
 	jstring linkTarget = NULL;

 	name = getByteArray(env, path);
   	len = readlink((const char*)name, temp, PATH_MAX);
   	free(name);
 	if (len > 0) {
 		temp[len] = 0;
 		(*env)->SetByteArrayRegion(env, buf, 0, len, (jbyte*) temp);
 	}
 	else {
 		temp[0] = 0;
 		(*env)->SetByteArrayRegion(env, buf, 0, 0, (jbyte*) temp);
 	}
 	return len;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    errno
  * Signature: ()I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_errno
   (JNIEnv *env, jclass clazz)
 {
 	return errno;
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    libattr
  * Signature: ()I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_libattr
   (JNIEnv *env, jclass clazz)
 {
 #ifdef MACOSX
 	return UNICODE_SUPPORTED | CHFLAGS_SUPPORTED;
 #else
 	return 0;
 #endif
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    tounicode
  * Signature: ([C)[B
  */
 JNIEXPORT jbyteArray JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_tounicode
   (JNIEnv *env, jclass clazz, jcharArray buf)
 {
 #ifdef MACOSX
 	jchar *temp;
 	jsize length;
 	CFStringRef str_ref;
 	CFIndex str_size;
 	jbyte *unicode_bytes;
 	jbyteArray ret;

 	temp = (*env)->GetCharArrayElements(env, buf, 0);
 	length = (*env)->GetArrayLength(env, buf);
 	str_ref = CFStringCreateWithCharacters(kCFAllocatorDefault, temp, length);
 	str_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
 	unicode_bytes = (jbyte*) calloc(str_size, sizeof(jbyte));
 	CFStringGetCString(str_ref, (char*) unicode_bytes, str_size, kCFStringEncodingUTF8);
 	ret = (*env)->NewByteArray(env, str_size);
 	if (ret == NULL)
 		return NULL;
 	(*env)->SetByteArrayRegion(env, ret, 0, str_size, unicode_bytes);
 	CFRelease(str_ref);
 	(*env)->ReleaseCharArrayElements(env, buf, temp, 0);
 	free(unicode_bytes);
 	return ret;
 #else
 	return NULL;
 #endif
 }

 /*
  * Class:     org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
  * Method:    getflag
  * Signature: ([B)I
  */
 JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_getflag
   (JNIEnv *env, jclass clazz, jbyteArray buf)
 {
 	char *flag;
 	jint ret = -1;

 	flag = (char*) getByteArray(env, buf);
 	if (strcmp(flag, "PATH_MAX") == 0)
 		ret = PATH_MAX;
 	else if (strcmp(flag, "S_IFMT") == 0)
 		ret = S_IFMT;
 	else if (strcmp(flag, "S_IFLNK") == 0)
 		ret = S_IFLNK;
 	else if (strcmp(flag, "S_IFDIR") == 0)
 		ret = S_IFDIR;
 	else if (strcmp(flag, "S_IRUSR") == 0)
 		ret = S_IRUSR;
 	else if (strcmp(flag, "S_IWUSR") == 0)
 		ret = S_IWUSR;
 	else if (strcmp(flag, "S_IXUSR") == 0)
 		ret = S_IXUSR;
 	else if (strcmp(flag, "S_IRGRP") == 0)
 		ret = S_IRGRP;
 	else if (strcmp(flag, "S_IWGRP") == 0)
 		ret = S_IWGRP;
 	else if (strcmp(flag, "S_IXGRP") == 0)
 		ret = S_IXGRP;
 	else if (strcmp(flag, "S_IROTH") == 0)
 		ret = S_IROTH;
 	else if (strcmp(flag, "S_IWOTH") == 0)
 		ret = S_IWOTH;
 	else if (strcmp(flag, "S_IXOTH") == 0)
 		ret = S_IXOTH;
 #ifdef MACOSX
 	else if (strcmp(flag, "UF_IMMUTABLE") == 0)
 		ret = UF_IMMUTABLE;
 	else if (strcmp(flag, "SF_IMMUTABLE") == 0)
 		ret = SF_IMMUTABLE;
 #endif
 	free(flag);
 	return ret;
 }
	/*******************************************************************************
	* Copyright (c) 2010 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	#include <stdlib.h>
	#include <string.h>
	#include <sys/types.h>
	#include <sys/stat.h>
	#include <unistd.h>
	#include <errno.h>
	#include <limits.h>
	#include <jni.h>

	#if defined MACOSX
	#include <CoreServices/CoreServices.h>
	#endif

	#include "unixfile.h"

	/* The lstat stat field st_mode. */
	static jfieldID attrs_st_mode;
	/* The lstat stat field st_size. */
	static jfieldID attrs_st_size;
	/* The lstat stat field st_mtime_sec. */
	static jfieldID attrs_st_mtime;
	/* The lstat stat field st_mtime_nsec divided by 1 000 000. Only filled on Linux based operating systems. */
	static jfieldID attrs_st_mtime_msec;
	/* Only filled on MACOSX. */
	static jfieldID attrs_st_flags;

	/*
	* Class: Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_initializeStructStatFieldIDs
	* Method: initializeStructStatFieldIDs
	* Signature: ()V
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_initializeStructStatFieldIDs
	(JNIEnv *env, jclass clazz)
	{
	jclass structStatClass = (*env)->FindClass(env, "org/eclipse/core/internal/filesystem/local/unix/StructStat");

	attrs_st_mode = (*env)->GetFieldID(env, structStatClass, "st_mode", "I");
	attrs_st_size = (*env)->GetFieldID(env, structStatClass, "st_size", "J");
	attrs_st_mtime = (*env)->GetFieldID(env, structStatClass, "st_mtime", "J");

	#ifdef MACOSX
	attrs_st_flags = (*env)->GetFieldID(env, structStatClass, "st_flags", "J");
	#endif

	#ifndef MACOSX
	attrs_st_mtime_msec = (*env)->GetFieldID(env, structStatClass, "st_mtime_msec", "J");
	#endif
	}

	/*
	* Get a null-terminated byte array from a java byte array. The returned bytearray
	* needs to be freed when not used anymore. Use free(result) to do that.
	*/
	jbyte* getByteArray(JNIEnv *env, jbyteArray target)
	{
	unsigned int len;
	jbyte temp, result;

	temp = (*env)->GetByteArrayElements(env, target, 0);
	len = (*env)->GetArrayLength(env, target);
	result = malloc((len + 1) * sizeof(jbyte));
	memcpy(result, temp, len * sizeof(jbyte));
	result[len] = '\0';
	(*env)->ReleaseByteArrayElements(env, target, temp, 0);
	return result;
	}

	/*
	* Fills StructStat object with data from struct stat.
	*/
	jint convertStatToObject(JNIEnv *env, struct stat info, jobject stat_object)
	{
	jclass cls;
	jfieldID fid;
	jboolean readOnly;

	cls = (*env)->GetObjectClass(env, stat_object);
	if (cls == 0) return -1;

	if (attrs_st_mode == 0) return -1;
	(*env)->SetIntField(env, stat_object, attrs_st_mode, info.st_mode);

	if (attrs_st_size == 0) return -1;
	(*env)->SetLongField(env, stat_object, attrs_st_size, info.st_size);

	if (attrs_st_mtime == 0) return -1;
	(*env)->SetLongField(env, stat_object, attrs_st_mtime, info.st_mtime);

	#ifndef MACOSX
	if (attrs_st_mtime_msec == 0) return -1;
	(env)->SetLongField(env, stat_object, attrs_st_mtime_msec, (info.st_mtim.tv_nsec / (1000 1000)));
	#endif


	#ifdef MACOSX
	if (attrs_st_flags == 0) return -1;
	(*env)->SetLongField(env, stat_object, attrs_st_flags, info.st_flags);
	#endif

	return 0;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: chmod
	* Signature: ([BI)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_chmod
	(JNIEnv *env, jclass clazz, jbyteArray path, jint mode)
	{
	int code;
	char *name;

	name = (char*) getByteArray(env, path);
	code = chmod(name, mode);
	free(name);
	return code;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: chflags
	* Signature: ([BI)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_chflags
	(JNIEnv *env, jclass clazz, jbyteArray path, jint flags)
	{
	#ifdef MACOSX
	int code;
	char *name;

	name = (char*) getByteArray(env, path);
	code = chflags(name, flags);
	free(name);
	return code;
	#else
	return -1;
	#endif
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: stat
	* Signature: ([BLorg/eclipse/core/internal/filesystem/local/unix/StructStat;)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_stat
	(JNIEnv *env, jclass clazz, jbyteArray path, jobject buf)
	{
	jint code;
	char *name;
	struct stat info;

	name = (char*) getByteArray(env, path);
	code = stat(name, &info);
	free(name);
	if (code != -1)
	return convertStatToObject(env, info, buf);
	else
	return code;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: lstat
	* Signature: ([BLorg/eclipse/core/internal/filesystem/local/unix/StructStat;)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_lstat
	(JNIEnv *env, jclass clazz, jbyteArray path, jobject buf)
	{
	jint code;
	char *name;
	struct stat info;

	name = (char*) getByteArray(env, path);
	code = lstat(name, &info);
	free(name);
	if (code != -1)
	return convertStatToObject(env, info, buf);
	else
	return code;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: readlink
	* Signature: ([B[BJ)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_readlink
	(JNIEnv *env, jclass clazz, jbyteArray path, jbyteArray buf, jlong bufsiz) {
	jint code;
	jbyte *name;
	int len;
	char temp[PATH_MAX+1];
	jstring linkTarget = NULL;

	name = getByteArray(env, path);
	len = readlink((const char*)name, temp, PATH_MAX);
	free(name);
	if (len > 0) {
	temp[len] = 0;
	(env)->SetByteArrayRegion(env, buf, 0, len, (jbyte) temp);
	}
	else {
	temp[0] = 0;
	(env)->SetByteArrayRegion(env, buf, 0, 0, (jbyte) temp);
	}
	return len;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: errno
	* Signature: ()I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_errno
	(JNIEnv *env, jclass clazz)
	{
	return errno;
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: libattr
	* Signature: ()I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_libattr
	(JNIEnv *env, jclass clazz)
	{
	#ifdef MACOSX
	return UNICODE_SUPPORTED \| CHFLAGS_SUPPORTED;
	#else
	return 0;
	#endif
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: tounicode
	* Signature: ([C)[B
	*/
	JNIEXPORT jbyteArray JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_tounicode
	(JNIEnv *env, jclass clazz, jcharArray buf)
	{
	#ifdef MACOSX
	jchar *temp;
	jsize length;
	CFStringRef str_ref;
	CFIndex str_size;
	jbyte *unicode_bytes;
	jbyteArray ret;

	temp = (*env)->GetCharArrayElements(env, buf, 0);
	length = (*env)->GetArrayLength(env, buf);
	str_ref = CFStringCreateWithCharacters(kCFAllocatorDefault, temp, length);
	str_size = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
	unicode_bytes = (jbyte*) calloc(str_size, sizeof(jbyte));
	CFStringGetCString(str_ref, (char*) unicode_bytes, str_size, kCFStringEncodingUTF8);
	ret = (*env)->NewByteArray(env, str_size);
	if (ret == NULL)
	return NULL;
	(*env)->SetByteArrayRegion(env, ret, 0, str_size, unicode_bytes);
	CFRelease(str_ref);
	(*env)->ReleaseCharArrayElements(env, buf, temp, 0);
	free(unicode_bytes);
	return ret;
	#else
	return NULL;
	#endif
	}

	/*
	* Class: org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives
	* Method: getflag
	* Signature: ([B)I
	*/
	JNIEXPORT jint JNICALL Java_org_eclipse_core_internal_filesystem_local_unix_UnixFileNatives_getflag
	(JNIEnv *env, jclass clazz, jbyteArray buf)
	{
	char *flag;
	jint ret = -1;

	flag = (char*) getByteArray(env, buf);
	if (strcmp(flag, "PATH_MAX") == 0)
	ret = PATH_MAX;
	else if (strcmp(flag, "S_IFMT") == 0)
	ret = S_IFMT;
	else if (strcmp(flag, "S_IFLNK") == 0)
	ret = S_IFLNK;
	else if (strcmp(flag, "S_IFDIR") == 0)
	ret = S_IFDIR;
	else if (strcmp(flag, "S_IRUSR") == 0)
	ret = S_IRUSR;
	else if (strcmp(flag, "S_IWUSR") == 0)
	ret = S_IWUSR;
	else if (strcmp(flag, "S_IXUSR") == 0)
	ret = S_IXUSR;
	else if (strcmp(flag, "S_IRGRP") == 0)
	ret = S_IRGRP;
	else if (strcmp(flag, "S_IWGRP") == 0)
	ret = S_IWGRP;
	else if (strcmp(flag, "S_IXGRP") == 0)
	ret = S_IXGRP;
	else if (strcmp(flag, "S_IROTH") == 0)
	ret = S_IROTH;
	else if (strcmp(flag, "S_IWOTH") == 0)
	ret = S_IWOTH;
	else if (strcmp(flag, "S_IXOTH") == 0)
	ret = S_IXOTH;
	#ifdef MACOSX
	else if (strcmp(flag, "UF_IMMUTABLE") == 0)
	ret = UF_IMMUTABLE;
	else if (strcmp(flag, "SF_IMMUTABLE") == 0)
	ret = SF_IMMUTABLE;
	#endif
	free(flag);
	return ret;
	}