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fuse_create.cpp

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This commit is contained in:
Antonio SJ Musumeci 2024-02-04 19:51:02 -06:00
parent cb7a088dd7
commit f8010dd9ce
1 changed files with 0 additions and 100 deletions
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100
src/fuse_create.cpp
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@ -31,106 +31,6 @@
namespace l
{
/*
The kernel expects being able to issue read requests when running
with writeback caching enabled so we must change O_WRONLY to
O_RDWR.
With writeback caching enabled the kernel handles O_APPEND. Could
be an issue if the underlying file changes out of band but that is
true of any caching.
*/
static
void
tweak_flags_writeback_cache(int *flags_)
{
if((*flags_ & O_ACCMODE) == O_WRONLY)
*flags_ = ((*flags_ & ~O_ACCMODE) | O_RDWR);
if(*flags_ & O_APPEND)
*flags_ &= ~O_APPEND;
}
static
bool
rdonly(const int flags_)
{
return ((flags_ & O_ACCMODE) == O_RDONLY);
}
static
bool
calculate_flush(FlushOnClose const flushonclose_,
int const flags_)
{
switch(flushonclose_)
{
case FlushOnCloseEnum::NEVER:
return false;
case FlushOnCloseEnum::OPENED_FOR_WRITE:
return !l::rdonly(flags_);
case FlushOnCloseEnum::ALWAYS:
return true;
}
return true;
}
static
void
config_to_ffi_flags(Config::Read &cfg_,
const int tid_,
fuse_file_info_t *ffi_)
{
switch(cfg_->cache_files)
{
case CacheFiles::ENUM::LIBFUSE:
ffi_->direct_io = cfg_->direct_io;
ffi_->keep_cache = cfg_->kernel_cache;
ffi_->auto_cache = cfg_->auto_cache;
break;
case CacheFiles::ENUM::OFF:
ffi_->direct_io = 1;
ffi_->keep_cache = 0;
ffi_->auto_cache = 0;
break;
case CacheFiles::ENUM::PARTIAL:
ffi_->direct_io = 0;
ffi_->keep_cache = 0;
ffi_->auto_cache = 0;
break;
case CacheFiles::ENUM::FULL:
ffi_->direct_io = 0;
ffi_->keep_cache = 1;
ffi_->auto_cache = 0;
break;
case CacheFiles::ENUM::AUTO_FULL:
ffi_->direct_io = 0;
ffi_->keep_cache = 0;
ffi_->auto_cache = 1;
break;
case CacheFiles::ENUM::PER_PROCESS:
std::string proc_name;
proc_name = procfs::get_name(tid_);
if(cfg_->cache_files_process_names.count(proc_name) == 0)
{
ffi_->direct_io = 1;
ffi_->keep_cache = 0;
ffi_->auto_cache = 0;
}
else
{
ffi_->direct_io = 0;
ffi_->keep_cache = 0;
ffi_->auto_cache = 0;
}
break;
}
if(cfg_->parallel_direct_writes == true)
ffi_->parallel_direct_writes = ffi_->direct_io;
}
static
int
create_core(const std::string &fullpath_,