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uio able to resolve symlinks now

This commit is contained in:
Robin Müller 2022-11-15 10:56:46 +01:00
parent 1b8fc2af19
commit fe3d6bd432
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GPG Key ID: 71B58F8A3CDFA9AC
1 changed files with 19 additions and 2 deletions
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21
src/fsfw_hal/linux/uio/UioMapper.cpp
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@ -1,6 +1,7 @@
#include "UioMapper.h"
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <filesystem>
@ -13,7 +14,23 @@ const char UioMapper::UIO_PATH_PREFIX[] = "/sys/class/uio/";
const char UioMapper::MAP_SUBSTR[] = "/maps/map";
const char UioMapper::SIZE_FILE_PATH[] = "/size";
UioMapper::UioMapper(std::string uioFile, int mapNum) : uioFile(uioFile), mapNum(mapNum) {}
UioMapper::UioMapper(std::string uioFile, int mapNum) : mapNum(mapNum) {
struct stat buf;
lstat(uioFile.c_str(), &buf);
if (S_ISLNK(buf.st_mode)) {
char* res = realpath(uioFile.c_str(), nullptr);
if (res) {
this->uioFile = res;
} else {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::error << "Could not resolve real path of UIO file " << uioFile << std::endl;
#endif
}
free(res);
} else {
this->uioFile = std::move(uioFile);
}
}
UioMapper::~UioMapper() {}
@ -22,7 +39,7 @@ ReturnValue_t UioMapper::getMappedAdress(uint32_t** address, Permissions permiss
int fd = open(uioFile.c_str(), O_RDWR);
if (fd < 1) {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::error << "PtmeAxiConfig::initialize: Invalid UIO device file" << std::endl;
sif::error << "UioMapper::getMappedAdress: Invalid UIO device file " << uioFile << std::endl;
#endif
return returnvalue::FAILED;
}