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B. Petersen 2018-08-14 17:20:46 +02:00
commit b1a00a03d2
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31
jni/utils/org_thoughtcrime_securesms_util_FileUtils.cpp Normal file
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#include "org_thoughtcrime_securesms_util_FileUtils.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
jint JNICALL Java_org_thoughtcrime_securesms_util_FileUtils_getFileDescriptorOwner
(JNIEnv *env, jclass clazz, jobject fileDescriptor)
{
jclass fdClass = env->GetObjectClass(fileDescriptor);
if (fdClass == NULL) {
return -1;
}
jfieldID fdFieldId = env->GetFieldID(fdClass, "descriptor", "I");
if (fdFieldId == NULL) {
return -1;
}
int fd = env->GetIntField(fileDescriptor, fdFieldId);
struct stat stat_struct;
if (fstat(fd, &stat_struct) != 0) {
return -1;
}
return stat_struct.st_uid;
}