rt/mergerfs
1
0
Fork 0
mirror of https://github.com/trapexit/mergerfs.git synced 2026-10-26 19:01:56 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

use getdents64 on linux

Browse source
This commit is contained in:
Antonio SJ Musumeci 2020-02-24 18:14:00 -05:00
parent d119807adb
commit 62873d2d3b
15 changed files with 898 additions and 229 deletions
Download patch file Download diff file Expand all files Collapse all files

131
src/fuse_readdir_plus.cpp
View file

@ -1,5 +1,7 @@
/*
Copyright (c) 2019, Antonio SJ Musumeci <trapexit@spawn.link>
ISC License
Copyright (c) 2020, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
@ -14,125 +16,8 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#define _DEFAULT_SOURCE
#include "config.hpp"
#include "dirinfo.hpp"
#include "errno.hpp"
#include "fs_base_closedir.hpp"
#include "fs_base_dirfd.hpp"
#include "fs_base_opendir.hpp"
#include "fs_base_readdir.hpp"
#include "fs_base_fstatat.hpp"
#include "fs_base_stat.hpp"
#include "fs_devid.hpp"
#include "fs_inode.hpp"
#include "fs_path.hpp"
#include "hashset.hpp"
#include "rwlock.hpp"
#include "ugid.hpp"
#include <fuse.h>
#include <fuse_dirents.h>
#include <string>
#include <vector>
#include <dirent.h>
using std::string;
using std::vector;
#define NO_OFFSET 0
static
int
dot_or_dotdot(const char *s_)
{
return ((s_[0] == '.') &&
((s_[1] == '\0') ||
((s_[1] == '.') && (s_[2] == '\0'))));
}
namespace l
{
static
int
readdir_plus(const Branches &branches_,
const char *dirname_,
fuse_dirents_t *buf_)
{
dev_t dev;
HashSet names;
string basepath;
struct stat st;
fuse_entry_t entry;
entry.nodeid = 0;
entry.generation = 0;
entry.entry_valid = 1;
entry.attr_valid = 1;
entry.entry_valid_nsec = 0;
entry.attr_valid_nsec = 0;
for(size_t i = 0, ei = branches_.size(); i != ei; i++)
{
int rv;
int dirfd;
DIR *dh;
basepath = fs::path::make(&branches_[i].path,dirname_);
dh = fs::opendir(basepath);
if(!dh)
continue;
dirfd = fs::dirfd(dh);
dev = fs::devid(dirfd);
if(dev == (dev_t)-1)
dev = i;
rv = 0;
for(struct dirent *de = fs::readdir(dh); de && !rv; de = fs::readdir(dh))
{
rv = names.put(de->d_name,_D_EXACT_NAMLEN(de));
if(rv == 0)
continue;
rv = fs::fstatat_nofollow(dirfd,de->d_name,&st);
if(rv == -1)
memset(&st,0,sizeof(st));
de->d_ino = fs::inode::recompute(de->d_ino,dev);
st.st_ino = fs::inode::recompute(st.st_ino,dev);
rv = fuse_dirents_add_plus(buf_,de,&entry,&st);
if(rv)
return (fs::closedir(dh),-ENOMEM);
}
fs::closedir(dh);
}
return 0;
}
}
namespace FUSE
{
int
readdir_plus(fuse_file_info *ffi_,
fuse_dirents_t *buf_)
{
DirInfo *di = reinterpret_cast<DirInfo*>(ffi_->fh);
const fuse_context *fc = fuse_get_context();
const Config &config = Config::get(fc);
const ugid::Set ugid(fc->uid,fc->gid);
const rwlock::ReadGuard readlock(&config.branches_lock);
return l::readdir_plus(config.branches,
di->fusepath.c_str(),
buf_);
}
}
#ifdef __linux__
# include "fuse_readdir_plus_linux.icpp"
#else
# include "fuse_readdir_plus_posix.icpp"
#endif