Date: Sat, 12 Jun 2010 22:15:52 +0300 From: Mikolaj Golub <to.my.trociny@gmail.com> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: '#ifndef DIAGNOSTIC' in nfsclient code looks like a typo Message-ID: <86mxv0cb9z.fsf@kopusha.home.net> In-Reply-To: <20100611191059.GF13238@deviant.kiev.zoral.com.ua> (Kostik Belousov's message of "Fri, 11 Jun 2010 22:10:59 %2B0300") References: <86mxv22ji7.fsf@zhuzha.ua1> <20100611191059.GF13238@deviant.kiev.zoral.com.ua>
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--=-=-=
On Fri, 11 Jun 2010 22:10:59 +0300 Kostik Belousov wrote:
KB> All the changes should be converted to the KASSERTs. There is no point
KB> in doing
KB> if (something)
KB> panic();
KB> for diagnostic; use
KB> KASSERT(something, (panic message));
Please look at the attached patch.
--
Mikolaj Golub
--=-=-=
Content-Type: text/x-patch
Content-Disposition: attachment; filename=nfs.KASSERT.patch
Index: sys/nfsclient/nfs_vnops.c
===================================================================
--- sys/nfsclient/nfs_vnops.c (revision 208960)
+++ sys/nfsclient/nfs_vnops.c (working copy)
@@ -1348,10 +1348,7 @@
int v3 = NFS_ISV3(vp), committed = NFSV3WRITE_FILESYNC;
int wsize;
-#ifndef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1)
- panic("nfs: writerpc iovcnt > 1");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
*must_commit = 0;
tsiz = uiop->uio_resid;
mtx_lock(&nmp->nm_mtx);
@@ -1708,12 +1705,8 @@
int error = 0;
struct vattr vattr;
-#ifndef DIAGNOSTIC
- if ((cnp->cn_flags & HASBUF) == 0)
- panic("nfs_remove: no name");
- if (vrefcnt(vp) < 1)
- panic("nfs_remove: bad v_usecount");
-#endif
+ KASSERT(cnp->cn_flags & HASBUF, ("nfs_remove: no name"));
+ KASSERT(vrefcnt(vp) > 0, ("nfs_remove: bad v_usecount"));
if (vp->v_type == VDIR)
error = EPERM;
else if (vrefcnt(vp) == 1 || (np->n_sillyrename &&
@@ -1814,11 +1807,8 @@
struct componentname *fcnp = ap->a_fcnp;
int error;
-#ifndef DIAGNOSTIC
- if ((tcnp->cn_flags & HASBUF) == 0 ||
- (fcnp->cn_flags & HASBUF) == 0)
- panic("nfs_rename: no name");
-#endif
+ KASSERT((tcnp->cn_flags & HASBUF) && (fcnp->cn_flags & HASBUF),
+ ("nfs_rename: no name"));
/* Check for cross-device rename */
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
@@ -2277,11 +2267,10 @@
int attrflag;
int v3 = NFS_ISV3(vp);
-#ifndef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
- (uiop->uio_resid & (DIRBLKSIZ - 1)))
- panic("nfs readdirrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uiop->uio_offset & (DIRBLKSIZ - 1)) &&
+ !(uiop->uio_resid & (DIRBLKSIZ - 1)),
+ ("nfs readdirrpc bad uio"));
/*
* If there is no cookie, assume directory was stale.
@@ -2482,11 +2471,10 @@
#ifndef nolint
dp = NULL;
#endif
-#ifndef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
- (uiop->uio_resid & (DIRBLKSIZ - 1)))
- panic("nfs readdirplusrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uiop->uio_offset & (DIRBLKSIZ - 1)) &&
+ !(uiop->uio_resid & (DIRBLKSIZ - 1)),
+ ("nfs readdirplusrpc bad uio"));
ndp->ni_dvp = vp;
newvp = NULLVP;
@@ -2752,10 +2740,7 @@
cache_purge(dvp);
np = VTONFS(vp);
-#ifndef DIAGNOSTIC
- if (vp->v_type == VDIR)
- panic("nfs: sillyrename dir");
-#endif
+ KASSERT(vp->v_type != VDIR, ("nfs: sillyrename dir"));
sp = malloc(sizeof (struct sillyrename),
M_NFSREQ, M_WAITOK);
sp->s_cred = crhold(cnp->cn_cred);
Index: sys/nfsclient/nfs_bio.c
===================================================================
--- sys/nfsclient/nfs_bio.c (revision 208960)
+++ sys/nfsclient/nfs_bio.c (working copy)
@@ -453,10 +453,7 @@
int seqcount;
int nra, error = 0, n = 0, on = 0;
-#ifdef DIAGNOSTIC
- if (uio->uio_rw != UIO_READ)
- panic("nfs_read mode");
-#endif
+ KASSERT(uio->uio_rw == UIO_READ, ("nfs_read mode"));
if (uio->uio_resid == 0)
return (0);
if (uio->uio_offset < 0) /* XXX VDIR cookies can be negative */
@@ -875,12 +872,9 @@
int bcount;
int n, on, error = 0;
-#ifdef DIAGNOSTIC
- if (uio->uio_rw != UIO_WRITE)
- panic("nfs_write mode");
- if (uio->uio_segflg == UIO_USERSPACE && uio->uio_td != curthread)
- panic("nfs_write proc");
-#endif
+ KASSERT(uio->uio_rw == UIO_WRITE, ("nfs_write mode"));
+ KASSERT(uio->uio_segflg != UIO_USERSPACE || uio->uio_td == curthread,
+ ("nfs_write proc"));
if (vp->v_type != VREG)
return (EIO);
mtx_lock(&np->n_mtx);
Index: sys/nfsclient/nfs_subs.c
===================================================================
--- sys/nfsclient/nfs_subs.c (revision 208960)
+++ sys/nfsclient/nfs_subs.c (working copy)
@@ -199,10 +199,7 @@
int uiosiz, clflg, rem;
char *cp;
-#ifdef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1)
- panic("nfsm_uiotombuf: iovcnt != 1");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1, ("nfsm_uiotombuf: iovcnt != 1"));
if (siz > MLEN) /* or should it >= MCLBYTES ?? */
clflg = 1;
@@ -789,10 +786,7 @@
pos = (uoff_t)off / NFS_DIRBLKSIZ;
if (pos == 0 || off < 0) {
-#ifdef DIAGNOSTIC
- if (add)
- panic("nfs getcookie add at <= 0");
-#endif
+ KASSERT(!add, ("nfs getcookie add at <= 0"));
return (&nfs_nullcookie);
}
pos--;
@@ -843,10 +837,7 @@
{
struct nfsnode *np = VTONFS(vp);
-#ifdef DIAGNOSTIC
- if (vp->v_type != VDIR)
- panic("nfs: invaldir not dir");
-#endif
+ KASSERT(vp->v_type == VDIR, ("nfs: invaldir not dir"));
nfs_dircookie_lock(np);
np->n_direofoffset = 0;
np->n_cookieverf.nfsuquad[0] = 0;
Index: sys/fs/nfsclient/nfs_clbio.c
===================================================================
--- sys/fs/nfsclient/nfs_clbio.c (revision 208960)
+++ sys/fs/nfsclient/nfs_clbio.c (working copy)
@@ -453,10 +453,7 @@
int seqcount;
int nra, error = 0, n = 0, on = 0;
-#ifdef DIAGNOSTIC
- if (uio->uio_rw != UIO_READ)
- panic("ncl_read mode");
-#endif
+ KASSERT(uio->uio_rw == UIO_READ, ("ncl_read mode"));
if (uio->uio_resid == 0)
return (0);
if (uio->uio_offset < 0) /* XXX VDIR cookies can be negative */
@@ -881,12 +878,9 @@
int bcount;
int n, on, error = 0;
-#ifdef DIAGNOSTIC
- if (uio->uio_rw != UIO_WRITE)
- panic("ncl_write mode");
- if (uio->uio_segflg == UIO_USERSPACE && uio->uio_td != curthread)
- panic("ncl_write proc");
-#endif
+ KASSERT(uio->uio_rw == UIO_WRITE, ("ncl_write mode"));
+ KASSERT(uio->uio_segflg != UIO_USERSPACE || uio->uio_td == curthread,
+ ("ncl_write proc"));
if (vp->v_type != VREG)
return (EIO);
mtx_lock(&np->n_mtx);
Index: sys/fs/nfsclient/nfs_clcomsubs.c
===================================================================
--- sys/fs/nfsclient/nfs_clcomsubs.c (revision 208960)
+++ sys/fs/nfsclient/nfs_clcomsubs.c (working copy)
@@ -194,10 +194,7 @@
int uiosiz, clflg, rem;
char *cp, *tcp;
-#ifdef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1)
- panic("nfsm_uiotombuf: iovcnt != 1");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1, ("nfsm_uiotombuf: iovcnt != 1"));
if (siz > ncl_mbuf_mlen) /* or should it >= MCLBYTES ?? */
clflg = 1;
@@ -346,10 +343,7 @@
pos = off / NFS_DIRBLKSIZ;
if (pos == 0) {
-#ifdef DIAGNOSTIC
- if (add)
- panic("nfs getcookie add at 0");
-#endif
+ KASSERT(!add, ("nfs getcookie add at 0"));
return (&nfs_nullcookie);
}
pos--;
Index: sys/fs/nfsclient/nfs_clsubs.c
===================================================================
--- sys/fs/nfsclient/nfs_clsubs.c (revision 208960)
+++ sys/fs/nfsclient/nfs_clsubs.c (working copy)
@@ -282,10 +282,7 @@
pos = (uoff_t)off / NFS_DIRBLKSIZ;
if (pos == 0 || off < 0) {
-#ifdef DIAGNOSTIC
- if (add)
- panic("nfs getcookie add at <= 0");
-#endif
+ KASSERT(!add, ("nfs getcookie add at <= 0"));
return (&nfs_nullcookie);
}
pos--;
@@ -336,10 +333,7 @@
{
struct nfsnode *np = VTONFS(vp);
-#ifdef DIAGNOSTIC
- if (vp->v_type != VDIR)
- panic("nfs: invaldir not dir");
-#endif
+ KASSERT(vp->v_type == VDIR, ("nfs: invaldir not dir"));
ncl_dircookie_lock(np);
np->n_direofoffset = 0;
np->n_cookieverf.nfsuquad[0] = 0;
Index: sys/fs/nfsclient/nfs_clvnops.c
===================================================================
--- sys/fs/nfsclient/nfs_clvnops.c (revision 208960)
+++ sys/fs/nfsclient/nfs_clvnops.c (working copy)
@@ -1564,12 +1564,8 @@
int error = 0;
struct vattr vattr;
-#ifndef DIAGNOSTIC
- if ((cnp->cn_flags & HASBUF) == 0)
- panic("nfs_remove: no name");
- if (vrefcnt(vp) < 1)
- panic("nfs_remove: bad v_usecount");
-#endif
+ KASSERT(cnp->cn_flags & HASBUF, ("nfs_remove: no name"));
+ KASSERT(vrefcnt(vp) > 0, ("nfs_remove: bad v_usecount"));
if (vp->v_type == VDIR)
error = EPERM;
else if (vrefcnt(vp) == 1 || (np->n_sillyrename &&
@@ -1676,11 +1672,8 @@
struct nfsv4node *newv4 = NULL;
int error;
-#ifndef DIAGNOSTIC
- if ((tcnp->cn_flags & HASBUF) == 0 ||
- (fcnp->cn_flags & HASBUF) == 0)
- panic("nfs_rename: no name");
-#endif
+ KASSERT((tcnp->cn_flags & HASBUF) && (fcnp->cn_flags & HASBUF),
+ ("nfs_rename: no name"));
/* Check for cross-device rename */
if ((fvp->v_mount != tdvp->v_mount) ||
(tvp && (fvp->v_mount != tvp->v_mount))) {
@@ -2137,11 +2130,10 @@
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
int error = 0, eof, attrflag;
-#ifndef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
- (uiop->uio_resid & (DIRBLKSIZ - 1)))
- panic("nfs readdirrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uiop->uio_offset & (DIRBLKSIZ - 1)) &&
+ !(uiop->uio_resid & (DIRBLKSIZ - 1)),
+ ("nfs readdirrpc bad uio"));
/*
* If there is no cookie, assume directory was stale.
@@ -2198,11 +2190,10 @@
struct nfsmount *nmp = VFSTONFS(vp->v_mount);
int error = 0, attrflag, eof;
-#ifndef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uiop->uio_offset & (DIRBLKSIZ - 1)) ||
- (uiop->uio_resid & (DIRBLKSIZ - 1)))
- panic("nfs readdirplusrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uiop->uio_offset & (DIRBLKSIZ - 1)) &&
+ !(uiop->uio_resid & (DIRBLKSIZ - 1)),
+ ("nfs readdirplusrpc bad uio"));
/*
* If there is no cookie, assume directory was stale.
@@ -2264,10 +2255,7 @@
cache_purge(dvp);
np = VTONFS(vp);
-#ifndef DIAGNOSTIC
- if (vp->v_type == VDIR)
- panic("nfs: sillyrename dir");
-#endif
+ KASSERT(vp->v_type != VDIR, ("nfs: sillyrename dir"));
MALLOC(sp, struct sillyrename *, sizeof (struct sillyrename),
M_NEWNFSREQ, M_WAITOK);
sp->s_cred = crhold(cnp->cn_cred);
Index: sys/fs/nfsclient/nfs_clrpcops.c
===================================================================
--- sys/fs/nfsclient/nfs_clrpcops.c (revision 208960)
+++ sys/fs/nfsclient/nfs_clrpcops.c (working copy)
@@ -1445,10 +1445,7 @@
struct nfsrv_descript *nd = &nfsd;
nfsattrbit_t attrbits;
-#ifdef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1)
- panic("nfs: writerpc iovcnt > 1");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1, ("nfs: writerpc iovcnt > 1"));
*attrflagp = 0;
tsiz = uio_uio_resid(uiop);
NFSLOCKMNT(nmp);
@@ -2501,10 +2498,9 @@
u_int32_t *tl2 = NULL;
size_t tresid;
-#ifdef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)))
- panic("nfs readdirrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)),
+ ("nfs readdirrpc bad uio"));
/*
* There is no point in reading a lot more than uio_resid, however
@@ -2939,10 +2935,9 @@
size_t tresid;
u_int32_t *tl2 = NULL, fakefileno = 0xffffffff, rderr;
-#ifdef DIAGNOSTIC
- if (uiop->uio_iovcnt != 1 || (uio_uio_resid(uiop) & (DIRBLKSIZ - 1)))
- panic("nfs readdirplusrpc bad uio");
-#endif
+ KASSERT(uiop->uio_iovcnt == 1 &&
+ !(uio_uio_resid(uiop) & (DIRBLKSIZ - 1)),
+ ("nfs readdirplusrpc bad uio"));
*attrflagp = 0;
if (eofp != NULL)
*eofp = 0;
Index: sys/fs/nfsserver/nfs_nfsdsocket.c
===================================================================
--- sys/fs/nfsserver/nfs_nfsdsocket.c (revision 208960)
+++ sys/fs/nfsserver/nfs_nfsdsocket.c (working copy)
@@ -364,10 +364,7 @@
* Get a locked vnode for the first file handle
*/
if (!(nd->nd_flag & ND_NFSV4)) {
-#ifdef DIAGNOSTIC
- if (nd->nd_repstat)
- panic("nfsrvd_dorpc");
-#endif
+ KASSERT(nd->nd_repstat == 0, ("nfsrvd_dorpc"));
/*
* For NFSv3, if the malloc/mget allocation is near limits,
* return NFSERR_DELAY.
--=-=-=--
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