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add ability to turn on/off xattr support at runtime

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This commit is contained in:
Antonio SJ Musumeci 2018-10-07 22:28:58 -04:00
parent 6ee44e451c
commit 65f482e483
9 changed files with 138 additions and 18 deletions
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35
src/getxattr.cpp
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@ -140,6 +140,28 @@ _getxattr_controlfile_bool(const bool boolvalue,
attrvalue = (boolvalue ? "true" : "false");
}
static
void
_getxattr_controlfile_errno(const int errno_,
string &attrvalue)
{
switch(errno_)
{
case 0:
attrvalue = "passthrough";
break;
case ENOATTR:
attrvalue = "noattr";
break;
case ENOTSUP:
attrvalue = "notsup";
break;
default:
attrvalue = "ERROR";
break;
}
}
static
void
_getxattr_controlfile_policies(const Config &config,
@ -210,6 +232,8 @@ _getxattr_controlfile(const Config &config,
_getxattr_controlfile_bool(config.ignorepponrename,attrvalue);
else if(attr[2] == "security_capability")
_getxattr_controlfile_bool(config.security_capability,attrvalue);
else if(attr[2] == "xattr")
_getxattr_controlfile_errno(config.xattr,attrvalue);
else if(attr[2] == "link_cow")
_getxattr_controlfile_bool(config.link_cow,attrvalue);
else if(attr[2] == "policies")
@ -347,16 +371,19 @@ namespace mergerfs
const fuse_context *fc = fuse_get_context();
const Config &config = Config::get(fc);
if((config.security_capability == false) &&
_is_attrname_security_capability(attrname))
return -ENOATTR;
if(fusepath == config.controlfile)
return _getxattr_controlfile(config,
attrname,
buf,
count);
if((config.security_capability == false) &&
_is_attrname_security_capability(attrname))
return -ENOATTR;
if(config.xattr)
return -config.xattr;
const ugid::Set ugid(fc->uid,fc->gid);
const rwlock::ReadGuard readlock(&config.srcmountslock);