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- Hold the credential of the caller and use it in all subsequent vn ops.

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- Get rid of the ill conceived aq_td field.

Suggested by:	rwatson
This commit is contained in:
Jeff Roberson 2002-09-23 05:20:00 +00:00
parent aca01e3897
commit 9e9256e252
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=103830
1 changed files with 7 additions and 6 deletions
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13
sys/kern/kern_alq.c
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@ -50,7 +50,7 @@ struct alq {
int aq_flags; /* Queue flags */
struct mtx aq_mtx; /* Queue lock */
struct vnode *aq_vp; /* Open vnode handle */
struct thread *aq_td; /* Thread that opened the vnode */
struct ucred *aq_cred; /* Credentials of the opening thread */
struct ale *aq_first; /* First ent */
struct ale *aq_entfree; /* First free ent */
struct ale *aq_entvalid; /* First ent valid for writing */
@ -224,8 +224,9 @@ alq_shutdown(struct alq *alq)
}
ALQ_UNLOCK(alq);
vn_close(alq->aq_vp, FREAD|FWRITE, alq->aq_td->td_ucred,
alq->aq_td);
vn_close(alq->aq_vp, FREAD|FWRITE, alq->aq_cred,
curthread);
crfree(alq->aq_cred);
}
/*
@ -286,9 +287,9 @@ alq_doio(struct alq *alq)
*/
vn_start_write(vp, &mp, V_WAIT);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
VOP_LEASE(vp, td, alq->aq_cred, LEASE_WRITE);
/* XXX error ignored */
VOP_WRITE(vp, &auio, IO_UNIT | IO_APPEND, td->td_ucred);
VOP_WRITE(vp, &auio, IO_UNIT | IO_APPEND, alq->aq_cred);
VOP_UNLOCK(vp, 0, td);
vn_finished_write(mp);
@ -352,7 +353,7 @@ alq_open(struct alq **alqp, const char *file, int size, int count)
alq->aq_entbuf = malloc(count * size, M_ALD, M_WAITOK|M_ZERO);
alq->aq_first = malloc(sizeof(*ale) * count, M_ALD, M_WAITOK|M_ZERO);
alq->aq_vp = nd.ni_vp;
alq->aq_td = td;
alq->aq_cred = crhold(td->td_ucred);
alq->aq_entmax = count;
alq->aq_entlen = size;
alq->aq_entfree = alq->aq_first;