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use {get,list,set}xattr to modify runtime

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This commit is contained in:
Antonio SJ Musumeci 2014-05-19 23:33:59 -04:00
parent 428dd8c877
commit 97ce6f5f21
4 changed files with 138 additions and 4 deletions
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65
src/setxattr.cpp
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@ -37,6 +37,65 @@
using std::string;
using std::vector;
using mergerfs::Policy;
using namespace mergerfs;
static
int
_setxattr_controlfile(config::Config &config,
const string attrname,
const string attrval,
const size_t attrvalsize,
const int flags)
{
#ifndef WITHOUT_XATTR
if(attrname == "user.mergerfs.action")
{
if((flags & XATTR_CREATE) == XATTR_CREATE)
return -EEXIST;
if(Policy::Action::fromString(attrval) != -1)
config.policy.action = attrval;
else
return -ENOSPC;
}
else if(attrname == "user.mergerfs.create")
{
if((flags & XATTR_CREATE) == XATTR_CREATE)
return -EEXIST;
if(Policy::Create::fromString(attrval) != -1)
config.policy.create = attrval;
else
return -ENOSPC;
}
else if(attrname == "user.mergerfs.search")
{
if((flags & XATTR_CREATE) == XATTR_CREATE)
return -EEXIST;
if(Policy::Search::fromString(attrval) != -1)
config.policy.search = attrval;
else
return -ENOSPC;
}
else if(attrname == "user.mergerfs.statfs")
{
if((flags & XATTR_CREATE) == XATTR_CREATE)
return -EEXIST;
if(Policy::StatFS::fromString(attrval) != -1)
config.policy.statfs = attrval;
else
return -ENOSPC;
}
else
{
return -ENOATTR;
}
config.updateReadStr();
return 0;
#else
return -ENOTSUP;
#endif
}
static
int
@ -87,7 +146,11 @@ namespace mergerfs
const config::Config &config = config::get();
if(fusepath == config.controlfile)
return -ENOTSUP;
return _setxattr_controlfile(config::get_writable(),
attrname,
string(attrval,attrvalsize),
attrvalsize,
flags);
return _setxattr(config.policy.action,
config.srcmounts,