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#include <jni.h>
#include <unistd.h>
#include <stdlib.h>
static inline const char **to_string_array(JNIEnv *env, jobjectArray ja) {
const int len = (*env)->GetArrayLength(env, ja);
const char **ca = calloc((size_t) len + 1, sizeof(char *));
for (int i = 0; i < len; ++i) {
jstring jstr = (jstring) (*env)->GetObjectArrayElement(env, ja, i);
ca[i] = (*env)->GetStringUTFChars(env, jstr, NULL);
}
ca[len] = NULL;
return ca;
}
static inline void exec(const char **argcv) {
execv(argcv[0], (char *const *) argcv);
exit(1);
}
JNIEXPORT jint JNICALL
Java_org_pacien_tincapp_commands_Executor_forkExec(JNIEnv *env, jclass class, jobjectArray argcv) {
pid_t pid = fork();
switch (pid) {
case 0:
exec(to_string_array(env, argcv));
return 0;
default:
return pid;
}
}
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