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compute inode in readdir

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This commit is contained in:
Antonio SJ Musumeci 2016-12-15 17:11:39 -05:00
parent ea403b4f5a
commit 67b48fcb3a
3 changed files with 98 additions and 6 deletions
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36
src/fs_base_dirfd.hpp Normal file
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@ -0,0 +1,36 @@
/*
ISC License
Copyright (c) 2016, 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
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __FS_DIRFD_HPP__
#define __FS_DIRFD_HPP__
#include <dirent.h>
#include <sys/types.h>
namespace fs
{
static
inline
int
dirfd(DIR *dirp)
{
return ::dirfd(dirp);
}
}
#endif

45
src/fs_devid.hpp Normal file
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@ -0,0 +1,45 @@
/*
ISC License
Copyright (c) 2016, 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
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef __FS_DEVID_HPP__
#define __FS_DEVID_HPP__
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
namespace fs
{
static
inline
dev_t
devid(const int fd)
{
int rv;
struct stat st;
rv = ::fstat(fd,&st);
if(rv == -1)
return -1;
return st.st_dev;
}
}
#endif

23
src/readdir.cpp
View File

@ -25,9 +25,11 @@
#include "config.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_stat.hpp"
#include "fs_devid.hpp"
#include "fs_inode.hpp"
#include "fs_path.hpp"
#include "readdir.hpp"
@ -48,13 +50,14 @@ _readdir(const vector<string> &srcmounts,
void *buf,
const fuse_fill_dir_t filler)
{
StrSet names;
string basepath;
struct stat st = {0};
StrSet names;
st.st_ino = fs::inode::MAGIC;
for(size_t i = 0, ei = srcmounts.size(); i != ei; i++)
{
int rv;
int dirfd;
DIR *dh;
fs::path::make(&srcmounts[i],dirname,basepath);
@ -63,18 +66,26 @@ _readdir(const vector<string> &srcmounts,
if(!dh)
continue;
for(struct dirent *de = fs::readdir(dh); de != NULL; de = fs::readdir(dh))
{
int rv;
dirfd = fs::dirfd(dh);
st.st_dev = fs::devid(dirfd);
if(st.st_dev == (dev_t)-1)
st.st_dev = i;
rv = 0;
for(struct dirent *de = fs::readdir(dh); de && !rv; de = fs::readdir(dh))
{
rv = names.put(de->d_name);
if(rv == 0)
continue;
st.st_ino = de->d_ino;
st.st_mode = DTTOIF(de->d_type);
fs::inode::recompute(st);
rv = filler(buf,de->d_name,&st,NO_OFFSET);
if(rv)
return -ENOMEM;
return (fs::closedir(dh),-ENOMEM);
}
fs::closedir(dh);