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add support for ioctl on directories. closes #27

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This commit is contained in:
Antonio SJ Musumeci 2014-09-26 18:31:22 -04:00
parent cfe7609bcd
commit 075d62d647
12 changed files with 368 additions and 7 deletions
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66
src/ioctl.cpp
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@ -25,12 +25,20 @@
#include <fuse.h>
#include <string>
#include <vector>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/fs.h>
#include "config.hpp"
#include "fileinfo.hpp"
#include "ugid.hpp"
#include "rwlock.hpp"
using std::string;
using std::vector;
using namespace mergerfs;
static
int
@ -72,6 +80,57 @@ _ioctl(const int fd,
return ((rv == -1) ? -errno : rv);
}
static
int
_ioctl_dir_base(const fs::SearchFunc searchFunc,
const vector<string> &srcmounts,
const string fusepath,
const int cmd,
void *arg,
const unsigned int flags,
void *data)
{
int fd;
int rv;
fs::PathVector paths;
rv = searchFunc(srcmounts,fusepath,paths);
if(rv == -1)
return -errno;
fd = ::open(paths[0].full.c_str(),flags);
if(fd == -1)
return -errno;
rv = _ioctl(fd,cmd,arg,flags,data);
close(fd);
return rv;
}
static
int
_ioctl_dir(const string fusepath,
const int cmd,
void *arg,
const unsigned int flags,
void *data)
{
const struct fuse_context *fc = fuse_get_context();
const config::Config &config = config::get(fc);
const ugid::SetResetGuard ugid(fc->uid,fc->gid);
const rwlock::ReadGuard readlock(&config.srcmountslock);
return _ioctl_dir_base(*config.search,
config.srcmounts,
fusepath,
cmd,
arg,
flags,
data);
}
namespace mergerfs
{
namespace ioctl
@ -86,6 +145,13 @@ namespace mergerfs
{
const FileInfo *fileinfo = (FileInfo*)ffi->fh;
if(flags & FUSE_IOCTL_DIR)
return _ioctl_dir(fusepath,
cmd,
arg,
flags,
data);
return _ioctl(fileinfo->fd,
cmd,
arg,