64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
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#include "CryOpenFile.h"
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#include <sys/types.h>
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#include <fcntl.h>
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#include "CryDevice.h"
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#include "fusepp/FuseErrnoException.h"
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namespace bf = boost::filesystem;
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//TODO Get rid of this in favor of a exception hierarchy
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using fusepp::CHECK_RETVAL;
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namespace cryfs {
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CryOpenFile::CryOpenFile(const CryDevice *device, const bf::path &path, int flags)
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:_descriptor(::open((device->RootDir() / path).c_str(), flags)) {
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CHECK_RETVAL(_descriptor);
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}
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CryOpenFile::~CryOpenFile() {
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int retval = close(_descriptor);
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CHECK_RETVAL(retval);
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}
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void CryOpenFile::stat(struct ::stat *result) const {
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int retval = ::fstat(_descriptor, result);
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CHECK_RETVAL(retval);
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}
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void CryOpenFile::truncate(off_t size) const {
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int retval = ::ftruncate(_descriptor, size);
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CHECK_RETVAL(retval);
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}
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int CryOpenFile::read(void *buf, size_t count, off_t offset) {
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//printf("Reading from real descriptor %d (%d, %d)\n", _descriptor, offset, count);
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//fflush(stdout);
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int retval = ::pread(_descriptor, buf, count, offset);
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CHECK_RETVAL(retval);
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//printf("retval: %d, count: %d\n", retval, count);
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//fflush(stdout);
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assert(static_cast<unsigned int>(retval) <= count);
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return retval;
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}
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void CryOpenFile::write(const void *buf, size_t count, off_t offset) {
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int retval = ::pwrite(_descriptor, buf, count, offset);
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CHECK_RETVAL(retval);
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assert(static_cast<unsigned int>(retval) == count);
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}
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void CryOpenFile::fsync() {
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int retval = ::fsync(_descriptor);
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CHECK_RETVAL(retval);
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}
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void CryOpenFile::fdatasync() {
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int retval = ::fdatasync(_descriptor);
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CHECK_RETVAL(retval);
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}
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} /* namespace cryfs */
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