hardcoresushi/libcryfs
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Implement some of the fuse functions

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This commit is contained in:
Sebastian Messmer 2014-11-04 21:17:02 +01:00
parent 728d97e9e8
commit 154de4c74d
2 changed files with 38 additions and 15 deletions
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51
src/cryfs_lib/CryFuse.cpp
View File

@ -16,12 +16,13 @@ CryFuse::CryFuse(CryDevice *device)
int CryFuse::getattr(const path &path, struct stat *stbuf) {
UNUSED(stbuf);
printf("getattr(%s, _)\n", path.c_str());
auto real_path = _device->RootDir() / path;
int retstat = lstat(real_path.c_str(), stbuf);
if (retstat != 0) {
retstat = -errno;
return -errno;
}
return retstat;
return 0;
}
int CryFuse::fgetattr(const path &path, struct stat *stbuf, fuse_file_info *fileinfo) {
@ -32,8 +33,17 @@ int CryFuse::fgetattr(const path &path, struct stat *stbuf, fuse_file_info *file
}
int CryFuse::readlink(const path &path, char *buf, size_t size) {
UNUSED(buf);
printf("Called non-implemented readlink(%s, _, %zu)\n", path.c_str(), size);
printf("readlink(%s, _, %zu)\n", path.c_str(), size);
auto real_path = _device->RootDir() / path;
//size-1, because the fuse readlink() function includes the null terminating byte in the buffer size,
//but the posix version does not and also doesn't append one.
int real_size = ::readlink(real_path.c_str(), buf, size-1);
if (real_size < 0) {
return -errno;
}
//Terminate the string
buf[real_size] = '\0';
return 0;
}
@ -145,28 +155,41 @@ int CryFuse::fsync(const path &path, int flags, fuse_file_info *fileinfo) {
}
int CryFuse::opendir(const path &path, fuse_file_info *fileinfo) {
printf("opendir(%s, _)\n", path.c_str());
auto real_path = _device->RootDir() / path;
DIR *dp = ::opendir(real_path.c_str());
int retstat = 0;
if (dp == nullptr) {
retstat = -errno;
return -errno;
}
fileinfo->fh = (intptr_t)dp;
printf("opendir(%s, _)\n", path.c_str());
return retstat;
return 0;
}
int CryFuse::readdir(const path &path, void *buf, fuse_fill_dir_t filler, off_t offset, fuse_file_info *fileinfo) {
UNUSED(buf);
UNUSED(filler);
UNUSED(fileinfo);
printf("Called non-implemented readdir(%s, _, _, %zu, _)\n", path.c_str(), offset);
printf("readdir(%s, _, _, %zu, _)\n", path.c_str(), offset);
auto real_path = _device->RootDir() / path;
DIR *dp = (DIR*)(uintptr_t)fileinfo->fh;
struct dirent *de = ::readdir(dp);
if (de == nullptr) {
return -errno;
}
do {
if (filler(buf, de->d_name, nullptr, 0) != 0) {
return -ENOMEM;
}
} while ((de = ::readdir(dp)) != nullptr);
return 0;
}
int CryFuse::releasedir(const path &path, fuse_file_info *fileinfo) {
UNUSED(fileinfo);
printf("Called non-implemented releasedir(%s, _)\n", path.c_str());
printf("releasedir(%s, _)\n", path.c_str());
int retstat = closedir((DIR*)(uintptr_t)fileinfo->fh);
if (retstat != 0) {
return -errno;
}
return 0;
}

2
src/main.cpp
View File

@ -9,7 +9,7 @@
int main (int argc, char *argv[])
{
printf("Version: %d\n", buildconfig::VERSION::MAJOR);
cryfs::CryDevice device(fusepp::path("/"));
cryfs::CryDevice device(fusepp::path("/home/heinzi"));
cryfs::CryFuse fuse(&device);
fuse.run(argc, argv);
return 0;