fsfw/hal/src/fsfw_hal/linux/UnixFileGuard.cpp

#include "fsfw/FSFW.h"
#include "fsfw/serviceinterface.h"
#include "fsfw_hal/linux/UnixFileGuard.h"

#include <cerrno>
#include <cstring>

UnixFileGuard::UnixFileGuard(std::string device, int* fileDescriptor, int flags,
        std::string diagnosticPrefix):
        fileDescriptor(fileDescriptor) {
    if(fileDescriptor == nullptr) {
        return;
    }
    *fileDescriptor = open(device.c_str(), flags);
    if (*fileDescriptor < 0) {
#if FSFW_VERBOSE_LEVEL >= 1
#if FSFW_CPP_OSTREAM_ENABLED == 1
        sif::warning << diagnosticPrefix << ": Opening device failed with error code " <<
                errno << ": " << strerror(errno) << std::endl;
#else
        sif::printWarning("%s: Opening device failed with error code %d: %s\n",
                diagnosticPrefix, errno, strerror(errno));
#endif /* FSFW_CPP_OSTREAM_ENABLED == 1 */
#endif /* FSFW_VERBOSE_LEVEL >= 1 */
        openStatus = OPEN_FILE_FAILED;
    }
}

UnixFileGuard::~UnixFileGuard() {
    if(fileDescriptor != nullptr) {
        close(*fileDescriptor);
    }
}

ReturnValue_t UnixFileGuard::getOpenResult() const {
    return openStatus;
}