kqid.c File Reference

#include <linux/fs.h>
#include <linux/quota.h>
#include <linux/export.h>

Go to the source code of this file.

Functions
bool	qid_eq (struct kqid left, struct kqid right)
	EXPORT_SYMBOL (qid_eq)
bool	qid_lt (struct kqid left, struct kqid right)
	EXPORT_SYMBOL (qid_lt)
qid_t	from_kqid (struct user_namespace *targ, struct kqid kqid)
	EXPORT_SYMBOL (from_kqid)
qid_t	from_kqid_munged (struct user_namespace *targ, struct kqid kqid)
	EXPORT_SYMBOL (from_kqid_munged)
bool	qid_valid (struct kqid qid)
	EXPORT_SYMBOL (qid_valid)

Function Documentation

EXPORT_SYMBOL

(

qid_eq

)

EXPORT_SYMBOL

(

qid_lt

)

EXPORT_SYMBOL

(

from_kqid

)

EXPORT_SYMBOL

(

from_kqid_munged

)

EXPORT_SYMBOL

(

qid_valid

)

qid_t from_kqid	(	struct user_namespace *	targ,
		struct kqid kqid
	)

from_kqid - Create a qid from a kqid user-namespace pair. : The user namespace we want a qid in. : The kernel internal quota identifier to start with.

Map into the user-namespace specified by and return the resulting qid.

There is always a mapping into the initial user_namespace.

If has no mapping in (qid_t)-1 is returned.

Definition at line 67 of file kqid.c.

qid_t from_kqid_munged	(	struct user_namespace *	targ,
		struct kqid kqid
	)

from_kqid_munged - Create a qid from a kqid user-namespace pair. : The user namespace we want a qid in. : The kernel internal quota identifier to start with.

Map into the user-namespace specified by 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 has no mapping in the kqid.type specific overflow identifier is returned.

Definition at line 100 of file kqid.c.

bool qid_eq	(	struct kqid	left,
		struct kqid	right
	)

qid_eq - Test to see if to kquid values are the same : A qid value : Another quid value

Return true if the two qid values are equal and false otherwise.

Definition at line 12 of file kqid.c.

bool qid_lt	(	struct kqid	left,
		struct kqid	right
	)

qid_lt - Test to see if one qid value is less than another : The possibly lesser qid value : The possibly greater qid value

Return true if left is less than right and false otherwise.

Definition at line 36 of file kqid.c.

bool qid_valid

(

struct kqid

qid

)

qid_valid - Report if a valid value is stored in a kqid. : The kernel internal quota identifier to test.

Definition at line 119 of file kqid.c.