2c15ac5bdb
type and id were removed and qid added to quota_send_warning in commit
431f19744d
("userns: Convert quota netlink aka quota_send_warning")
Cc: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
#include <linux/fs.h>
|
|
#include <linux/quota.h>
|
|
#include <linux/export.h>
|
|
|
|
/**
|
|
* qid_eq - Test to see if to kquid values are the same
|
|
* @left: A qid value
|
|
* @right: Another quid value
|
|
*
|
|
* Return true if the two qid values are equal and false otherwise.
|
|
*/
|
|
bool qid_eq(struct kqid left, struct kqid right)
|
|
{
|
|
if (left.type != right.type)
|
|
return false;
|
|
switch(left.type) {
|
|
case USRQUOTA:
|
|
return uid_eq(left.uid, right.uid);
|
|
case GRPQUOTA:
|
|
return gid_eq(left.gid, right.gid);
|
|
case PRJQUOTA:
|
|
return projid_eq(left.projid, right.projid);
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(qid_eq);
|
|
|
|
/**
|
|
* qid_lt - Test to see if one qid value is less than another
|
|
* @left: The possibly lesser qid value
|
|
* @right: The possibly greater qid value
|
|
*
|
|
* Return true if left is less than right and false otherwise.
|
|
*/
|
|
bool qid_lt(struct kqid left, struct kqid right)
|
|
{
|
|
if (left.type < right.type)
|
|
return true;
|
|
if (left.type > right.type)
|
|
return false;
|
|
switch (left.type) {
|
|
case USRQUOTA:
|
|
return uid_lt(left.uid, right.uid);
|
|
case GRPQUOTA:
|
|
return gid_lt(left.gid, right.gid);
|
|
case PRJQUOTA:
|
|
return projid_lt(left.projid, right.projid);
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(qid_lt);
|
|
|
|
/**
|
|
* from_kqid - Create a qid from a kqid user-namespace pair.
|
|
* @targ: The user namespace we want a qid in.
|
|
* @kqid: The kernel internal quota identifier to start with.
|
|
*
|
|
* Map @kqid into the user-namespace specified by @targ and
|
|
* return the resulting qid.
|
|
*
|
|
* There is always a mapping into the initial user_namespace.
|
|
*
|
|
* If @kqid has no mapping in @targ (qid_t)-1 is returned.
|
|
*/
|
|
qid_t from_kqid(struct user_namespace *targ, struct kqid kqid)
|
|
{
|
|
switch (kqid.type) {
|
|
case USRQUOTA:
|
|
return from_kuid(targ, kqid.uid);
|
|
case GRPQUOTA:
|
|
return from_kgid(targ, kqid.gid);
|
|
case PRJQUOTA:
|
|
return from_kprojid(targ, kqid.projid);
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(from_kqid);
|
|
|
|
/**
|
|
* from_kqid_munged - Create a qid from a kqid user-namespace pair.
|
|
* @targ: The user namespace we want a qid in.
|
|
* @kqid: The kernel internal quota identifier to start with.
|
|
*
|
|
* Map @kqid into the user-namespace specified by @targ and
|
|
* return the resulting qid.
|
|
*
|
|
* There is always a mapping into the initial user_namespace.
|
|
*
|
|
* Unlike from_kqid from_kqid_munged never fails and always
|
|
* returns a valid projid. This makes from_kqid_munged
|
|
* appropriate for use in places where failing to provide
|
|
* a qid_t is not a good option.
|
|
*
|
|
* If @kqid has no mapping in @targ the kqid.type specific
|
|
* overflow identifier is returned.
|
|
*/
|
|
qid_t from_kqid_munged(struct user_namespace *targ, struct kqid kqid)
|
|
{
|
|
switch (kqid.type) {
|
|
case USRQUOTA:
|
|
return from_kuid_munged(targ, kqid.uid);
|
|
case GRPQUOTA:
|
|
return from_kgid_munged(targ, kqid.gid);
|
|
case PRJQUOTA:
|
|
return from_kprojid_munged(targ, kqid.projid);
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(from_kqid_munged);
|
|
|
|
/**
|
|
* qid_valid - Report if a valid value is stored in a kqid.
|
|
* @qid: The kernel internal quota identifier to test.
|
|
*/
|
|
bool qid_valid(struct kqid qid)
|
|
{
|
|
switch (qid.type) {
|
|
case USRQUOTA:
|
|
return uid_valid(qid.uid);
|
|
case GRPQUOTA:
|
|
return gid_valid(qid.gid);
|
|
case PRJQUOTA:
|
|
return projid_valid(qid.projid);
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(qid_valid);
|