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ufs_quota.c (151897) ufs_quota.c (153400)
1/*-
2 * Copyright (c) 1982, 1986, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Robert Elz at The University of Melbourne.
7 *
8 * Redistribution and use in source and binary forms, with or without

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28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95
33 */
34
35#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 1982, 1986, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Robert Elz at The University of Melbourne.
7 *
8 * Redistribution and use in source and binary forms, with or without

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28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)ufs_quota.c 8.5 (Berkeley) 5/20/95
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD: head/sys/ufs/ufs/ufs_quota.c 151897 2005-10-31 15:41:29Z rwatson $");
36__FBSDID("$FreeBSD: head/sys/ufs/ufs/ufs_quota.c 153400 2005-12-14 00:49:52Z des $");
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/fcntl.h>
41#include <sys/kernel.h>
42#include <sys/lock.h>
43#include <sys/malloc.h>
44#include <sys/mount.h>

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394/*
395 * Q_QUOTAON - set up a quota file for a particular filesystem.
396 */
397int
398quotaon(td, mp, type, fname)
399 struct thread *td;
400 struct mount *mp;
401 int type;
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/fcntl.h>
41#include <sys/kernel.h>
42#include <sys/lock.h>
43#include <sys/malloc.h>
44#include <sys/mount.h>

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394/*
395 * Q_QUOTAON - set up a quota file for a particular filesystem.
396 */
397int
398quotaon(td, mp, type, fname)
399 struct thread *td;
400 struct mount *mp;
401 int type;
402 caddr_t fname;
402 void *fname;
403{
404 struct ufsmount *ump = VFSTOUFS(mp);
405 struct vnode *vp, **vpp;
406 struct vnode *nvp;
407 struct dquot *dq;
408 int error, flags;
409 struct nameidata nd;
410

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550 * Q_GETQUOTA - return current values in a dqblk structure.
551 */
552int
553getquota(td, mp, id, type, addr)
554 struct thread *td;
555 struct mount *mp;
556 u_long id;
557 int type;
403{
404 struct ufsmount *ump = VFSTOUFS(mp);
405 struct vnode *vp, **vpp;
406 struct vnode *nvp;
407 struct dquot *dq;
408 int error, flags;
409 struct nameidata nd;
410

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550 * Q_GETQUOTA - return current values in a dqblk structure.
551 */
552int
553getquota(td, mp, id, type, addr)
554 struct thread *td;
555 struct mount *mp;
556 u_long id;
557 int type;
558 caddr_t addr;
558 void *addr;
559{
560 struct dquot *dq;
561 int error;
562
563 switch (type) {
564 case USRQUOTA:
565 if ((td->td_ucred->cr_uid != id) && !unprivileged_get_quota) {
566 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);

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579
580 default:
581 return (EINVAL);
582 }
583
584 error = dqget(NULLVP, id, VFSTOUFS(mp), type, &dq);
585 if (error)
586 return (error);
559{
560 struct dquot *dq;
561 int error;
562
563 switch (type) {
564 case USRQUOTA:
565 if ((td->td_ucred->cr_uid != id) && !unprivileged_get_quota) {
566 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);

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579
580 default:
581 return (EINVAL);
582 }
583
584 error = dqget(NULLVP, id, VFSTOUFS(mp), type, &dq);
585 if (error)
586 return (error);
587 error = copyout((caddr_t)&dq->dq_dqb, addr, sizeof (struct dqblk));
587 error = copyout(&dq->dq_dqb, addr, sizeof (struct dqblk));
588 dqrele(NULLVP, dq);
589 return (error);
590}
591
592/*
593 * Q_SETQUOTA - assign an entire dqblk structure.
594 */
595int
596setquota(td, mp, id, type, addr)
597 struct thread *td;
598 struct mount *mp;
599 u_long id;
600 int type;
588 dqrele(NULLVP, dq);
589 return (error);
590}
591
592/*
593 * Q_SETQUOTA - assign an entire dqblk structure.
594 */
595int
596setquota(td, mp, id, type, addr)
597 struct thread *td;
598 struct mount *mp;
599 u_long id;
600 int type;
601 caddr_t addr;
601 void *addr;
602{
603 struct dquot *dq;
604 struct dquot *ndq;
605 struct ufsmount *ump = VFSTOUFS(mp);
606 struct dqblk newlim;
607 int error;
608
609 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);
610 if (error)
611 return (error);
612
602{
603 struct dquot *dq;
604 struct dquot *ndq;
605 struct ufsmount *ump = VFSTOUFS(mp);
606 struct dqblk newlim;
607 int error;
608
609 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);
610 if (error)
611 return (error);
612
613 error = copyin(addr, (caddr_t)&newlim, sizeof (struct dqblk));
613 error = copyin(addr, &newlim, sizeof (struct dqblk));
614 if (error)
615 return (error);
616 error = dqget(NULLVP, id, ump, type, &ndq);
617 if (error)
618 return (error);
619 dq = ndq;
620 while (dq->dq_flags & DQ_LOCK) {
621 dq->dq_flags |= DQ_WANT;

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659 * Q_SETUSE - set current inode and block usage.
660 */
661int
662setuse(td, mp, id, type, addr)
663 struct thread *td;
664 struct mount *mp;
665 u_long id;
666 int type;
614 if (error)
615 return (error);
616 error = dqget(NULLVP, id, ump, type, &ndq);
617 if (error)
618 return (error);
619 dq = ndq;
620 while (dq->dq_flags & DQ_LOCK) {
621 dq->dq_flags |= DQ_WANT;

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659 * Q_SETUSE - set current inode and block usage.
660 */
661int
662setuse(td, mp, id, type, addr)
663 struct thread *td;
664 struct mount *mp;
665 u_long id;
666 int type;
667 caddr_t addr;
667 void *addr;
668{
669 struct dquot *dq;
670 struct ufsmount *ump = VFSTOUFS(mp);
671 struct dquot *ndq;
672 struct dqblk usage;
673 int error;
674
675 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);
676 if (error)
677 return (error);
678
668{
669 struct dquot *dq;
670 struct ufsmount *ump = VFSTOUFS(mp);
671 struct dquot *ndq;
672 struct dqblk usage;
673 int error;
674
675 error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL);
676 if (error)
677 return (error);
678
679 error = copyin(addr, (caddr_t)&usage, sizeof (struct dqblk));
679 error = copyin(addr, &usage, sizeof (struct dqblk));
680 if (error)
681 return (error);
682 error = dqget(NULLVP, id, ump, type, &ndq);
683 if (error)
684 return (error);
685 dq = ndq;
686 while (dq->dq_flags & DQ_LOCK) {
687 dq->dq_flags |= DQ_WANT;

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877 LIST_INSERT_HEAD(dqh, dq, dq_hash);
878 DQREF(dq);
879 dq->dq_flags = DQ_LOCK;
880 dq->dq_id = id;
881 dq->dq_ump = ump;
882 dq->dq_type = type;
883 auio.uio_iov = &aiov;
884 auio.uio_iovcnt = 1;
680 if (error)
681 return (error);
682 error = dqget(NULLVP, id, ump, type, &ndq);
683 if (error)
684 return (error);
685 dq = ndq;
686 while (dq->dq_flags & DQ_LOCK) {
687 dq->dq_flags |= DQ_WANT;

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877 LIST_INSERT_HEAD(dqh, dq, dq_hash);
878 DQREF(dq);
879 dq->dq_flags = DQ_LOCK;
880 dq->dq_id = id;
881 dq->dq_ump = ump;
882 dq->dq_type = type;
883 auio.uio_iov = &aiov;
884 auio.uio_iovcnt = 1;
885 aiov.iov_base = (caddr_t)&dq->dq_dqb;
885 aiov.iov_base = &dq->dq_dqb;
886 aiov.iov_len = sizeof (struct dqblk);
887 auio.uio_resid = sizeof (struct dqblk);
888 auio.uio_offset = (off_t)(id * sizeof (struct dqblk));
889 auio.uio_segflg = UIO_SYSSPACE;
890 auio.uio_rw = UIO_READ;
891 auio.uio_td = (struct thread *)0;
892 error = VOP_READ(dqvp, &auio, 0, ump->um_cred[type]);
893 if (auio.uio_resid == sizeof(struct dqblk) && error == 0)
886 aiov.iov_len = sizeof (struct dqblk);
887 auio.uio_resid = sizeof (struct dqblk);
888 auio.uio_offset = (off_t)(id * sizeof (struct dqblk));
889 auio.uio_segflg = UIO_SYSSPACE;
890 auio.uio_rw = UIO_READ;
891 auio.uio_td = (struct thread *)0;
892 error = VOP_READ(dqvp, &auio, 0, ump->um_cred[type]);
893 if (auio.uio_resid == sizeof(struct dqblk) && error == 0)
894 bzero((caddr_t)&dq->dq_dqb, sizeof(struct dqblk));
894 bzero(&dq->dq_dqb, sizeof(struct dqblk));
895 if (vp != dqvp)
896 VOP_UNLOCK(dqvp, 0, td);
897 if (dq->dq_flags & DQ_WANT)
898 wakeup(dq);
899 dq->dq_flags = 0;
900 /*
901 * I/O error in reading quota file, release
902 * quota structure and reflect problem to caller.

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989 if (vp != dqvp)
990 VOP_UNLOCK(dqvp, 0, td);
991 return (0);
992 }
993 }
994 dq->dq_flags |= DQ_LOCK;
995 auio.uio_iov = &aiov;
996 auio.uio_iovcnt = 1;
895 if (vp != dqvp)
896 VOP_UNLOCK(dqvp, 0, td);
897 if (dq->dq_flags & DQ_WANT)
898 wakeup(dq);
899 dq->dq_flags = 0;
900 /*
901 * I/O error in reading quota file, release
902 * quota structure and reflect problem to caller.

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989 if (vp != dqvp)
990 VOP_UNLOCK(dqvp, 0, td);
991 return (0);
992 }
993 }
994 dq->dq_flags |= DQ_LOCK;
995 auio.uio_iov = &aiov;
996 auio.uio_iovcnt = 1;
997 aiov.iov_base = (caddr_t)&dq->dq_dqb;
997 aiov.iov_base = &dq->dq_dqb;
998 aiov.iov_len = sizeof (struct dqblk);
999 auio.uio_resid = sizeof (struct dqblk);
1000 auio.uio_offset = (off_t)(dq->dq_id * sizeof (struct dqblk));
1001 auio.uio_segflg = UIO_SYSSPACE;
1002 auio.uio_rw = UIO_WRITE;
1003 auio.uio_td = (struct thread *)0;
1004 error = VOP_WRITE(dqvp, &auio, 0, dq->dq_ump->um_cred[dq->dq_type]);
1005 if (auio.uio_resid && error == 0)

--- 36 unchanged lines hidden --- 		998 aiov.iov_len = sizeof (struct dqblk);
999 auio.uio_resid = sizeof (struct dqblk);
1000 auio.uio_offset = (off_t)(dq->dq_id * sizeof (struct dqblk));
1001 auio.uio_segflg = UIO_SYSSPACE;
1002 auio.uio_rw = UIO_WRITE;
1003 auio.uio_td = (struct thread *)0;
1004 error = VOP_WRITE(dqvp, &auio, 0, dq->dq_ump->um_cred[dq->dq_type]);
1005 if (auio.uio_resid && error == 0)

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