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Added PosixFile.symlink() and readLink().

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This commit is contained in:
Adam Murdoch
2012-09-01 16:11:30 +10:00
parent cd24d5fb51
commit 4e8db25017
8 changed files with 161 additions and 13 deletions
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42
src/main/cpp/posix.cpp
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@@ -80,6 +80,48 @@ Java_net_rubygrapefruit_platform_internal_jni_PosixFileFunctions_stat(JNIEnv *en
env->SetIntField(dest, modeField, 0777 & fileInfo.st_mode);
}
JNIEXPORT void JNICALL
Java_net_rubygrapefruit_platform_internal_jni_PosixFileFunctions_symlink(JNIEnv *env, jclass target, jbyteArray path, jbyteArray contents, jobject result) {
jbyte* pathUtf8 = env->GetByteArrayElements(path, NULL);
jbyte* contentsUtf8 = env->GetByteArrayElements(contents, NULL);
int retval = symlink((const char*)contentsUtf8, (const char*)pathUtf8);
env->ReleaseByteArrayElements(path, pathUtf8, JNI_ABORT);
env->ReleaseByteArrayElements(contents, contentsUtf8, JNI_ABORT);
if (retval != 0) {
mark_failed_with_errno(env, "could not symlink", result);
}
}
JNIEXPORT jbyteArray JNICALL
Java_net_rubygrapefruit_platform_internal_jni_PosixFileFunctions_readlink(JNIEnv *env, jclass target, jbyteArray path, jobject result) {
struct stat link_info;
jbyte* pathUtf8 = env->GetByteArrayElements(path, NULL);
int retval = lstat((const char*)pathUtf8, &link_info);
if (retval != 0) {
env->ReleaseByteArrayElements(path, pathUtf8, JNI_ABORT);
mark_failed_with_errno(env, "could not lstat file", result);
return NULL;
}
jbyteArray contents = env->NewByteArray(link_info.st_size);
if (contents == NULL) {
env->ReleaseByteArrayElements(path, pathUtf8, JNI_ABORT);
mark_failed_with_message(env, "could not create array", result);
return NULL;
}
jbyte* contentsUtf8 = env->GetByteArrayElements(contents, NULL);
retval = readlink((const char*)pathUtf8, (char*)contentsUtf8, link_info.st_size);
env->ReleaseByteArrayElements(path, pathUtf8, JNI_ABORT);
if (retval < 0) {
mark_failed_with_errno(env, "could not readlink", result);
env->ReleaseByteArrayElements(contents, contentsUtf8, JNI_ABORT);
return NULL;
}
env->ReleaseByteArrayElements(contents, contentsUtf8, JNI_COMMIT);
return contents;
}
/*
* Process functions
*/