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[src/trunk]: src/usr.sbin/puffs/mount_9p Handle Rerror and return errno corre...



details:   https://anonhg.NetBSD.org/src/rev/2dbc0a5aaceb
branches:  trunk
changeset: 999519:2dbc0a5aaceb
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Fri Jun 07 05:34:34 2019 +0000

description:
Handle Rerror and return errno correctly (only for 9P2000.u for now)

diffstat:

 usr.sbin/puffs/mount_9p/mount_9p.8  |   6 +-
 usr.sbin/puffs/mount_9p/nineproto.c |  65 +++++++++++++++++++++++++++++++-----
 usr.sbin/puffs/mount_9p/ninepuffs.h |   9 +++-
 usr.sbin/puffs/mount_9p/node.c      |  25 ++++++++-----
 usr.sbin/puffs/mount_9p/subr.c      |   6 +-
 5 files changed, 82 insertions(+), 29 deletions(-)

diffs (truncated from 305 to 300 lines):

diff -r fa6548fa5ba2 -r 2dbc0a5aaceb usr.sbin/puffs/mount_9p/mount_9p.8
--- a/usr.sbin/puffs/mount_9p/mount_9p.8        Fri Jun 07 05:22:28 2019 +0000
+++ b/usr.sbin/puffs/mount_9p/mount_9p.8        Fri Jun 07 05:34:34 2019 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: mount_9p.8,v 1.9 2019/05/17 08:56:12 wiz Exp $
+.\"    $NetBSD: mount_9p.8,v 1.10 2019/06/07 05:34:34 ozaki-r Exp $
 .\"
 .\" Copyright (c) 2007 Antti Kantee.  All rights reserved.
 .\"
@@ -23,7 +23,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd May 15, 2019
+.Dd June 7, 2019
 .Dt MOUNT_9P 8
 .Os
 .Sh NAME
@@ -92,7 +92,7 @@
 .Pp
 Authentication support is missing.
 .Pp
-Error code handling is missing.
+Error code handling is missing for 9P2000.
 .Pp
 Under construction.
 .Pp
diff -r fa6548fa5ba2 -r 2dbc0a5aaceb usr.sbin/puffs/mount_9p/nineproto.c
--- a/usr.sbin/puffs/mount_9p/nineproto.c       Fri Jun 07 05:22:28 2019 +0000
+++ b/usr.sbin/puffs/mount_9p/nineproto.c       Fri Jun 07 05:34:34 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nineproto.c,v 1.10 2019/05/17 08:48:04 ozaki-r Exp $   */
+/*     $NetBSD: nineproto.c,v 1.11 2019/06/07 05:34:34 ozaki-r Exp $   */
 
 /*
  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
@@ -27,7 +27,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: nineproto.c,v 1.10 2019/05/17 08:48:04 ozaki-r Exp $");
+__RCSID("$NetBSD: nineproto.c,v 1.11 2019/06/07 05:34:34 ozaki-r Exp $");
 #endif /* !lint */
 
 #include <sys/types.h>
@@ -188,6 +188,49 @@
        return 0;
 }
 
+static int
+proto_rerror(struct puffs_usermount *pu, struct puffs_framebuf *pb,
+    uint32_t *_errno)
+{
+       struct puffs9p *p9p = puffs_getspecific(pu);
+       uint16_t size;
+       int rv;
+       char *name;
+
+       /* Skip size[4] Rerror tag[2] */
+       rv = puffs_framebuf_seekset(pb,
+           sizeof(uint32_t) + sizeof(uint8_t) + sizeof(uint16_t));
+       if (rv == -1)
+               return EPROTO;
+
+       rv = p9pbuf_get_str(pb, &name, &size);
+       if (rv != 0)
+               return rv;
+       if (p9p->protover == P9PROTO_VERSION_U) {
+               rv = p9pbuf_get_4(pb, _errno);
+       } else {
+               /* TODO Convert error string to errno */
+               rv = EPROTO;
+       }
+
+       return rv;
+}
+
+int
+proto_handle_rerror(struct puffs_usermount *pu, struct puffs_framebuf *pb)
+{
+       int rv;
+       uint32_t _errno;
+
+       if (p9pbuf_get_type(pb) != P9PROTO_R_ERROR)
+               return EPROTO;
+
+       rv = proto_rerror(pu, pb, &_errno);
+       if (rv == 0)
+               rv = _errno;
+       return rv;
+}
+
 int
 proto_cc_dupfid(struct puffs_usermount *pu, p9pfid_t oldfid, p9pfid_t newfid)
 {
@@ -206,7 +249,7 @@
        p9pbuf_put_2(pb, 0);
        GETRESPONSE(pb);
 
-       rv = proto_expect_walk_nqids(pb, &qids);
+       rv = proto_expect_walk_nqids(pu, pb, &qids);
        if (rv == 0 && qids != 0)
                rv = EPROTO;
 
@@ -232,7 +275,7 @@
        if (waitforit) {
                if (puffs_framev_enqueue_cc(pcc, p9p->servsock, pb, 0) == 0) {
                        if (p9pbuf_get_type(pb) != P9PROTO_R_CLUNK)
-                               rv = EPROTO;
+                               rv = proto_handle_rerror(pu, pb);
                } else {
                        rv = errno;
                }
@@ -269,7 +312,7 @@
        p9pbuf_put_1(pb, mode);
        GETRESPONSE(pb);
        if (p9pbuf_get_type(pb) != P9PROTO_R_OPEN)
-               rv = EPROTO;
+               rv = proto_handle_rerror(pu, pb);
 
  out:
        puffs_framebuf_destroy(pb);
@@ -349,20 +392,22 @@
 }
 
 int
-proto_expect_walk_nqids(struct puffs_framebuf *pb, uint16_t *nqids)
+proto_expect_walk_nqids(struct puffs_usermount *pu, struct puffs_framebuf *pb,
+    uint16_t *nqids)
 {
 
        if (p9pbuf_get_type(pb) != P9PROTO_R_WALK)
-               return EPROTO;
+               return proto_handle_rerror(pu, pb);
        return p9pbuf_get_2(pb, nqids);
 }
 
 int
-proto_expect_qid(struct puffs_framebuf *pb, uint8_t op, struct qid9p *qid)
+proto_expect_qid(struct puffs_usermount *pu, struct puffs_framebuf *pb,
+    uint8_t op, struct qid9p *qid)
 {
 
        if (p9pbuf_get_type(pb) != op)
-               return EPROTO;
+               return proto_handle_rerror(pu, pb);
        return proto_getqid(pb, qid);
 }
 
@@ -374,7 +419,7 @@
        int rv;
 
        if (p9pbuf_get_type(pb) != P9PROTO_R_STAT)
-               return EPROTO;
+               return proto_handle_rerror(pu, pb);
        if ((rv = p9pbuf_get_2(pb, &dummy)))
                return rv;
        return proto_getstat(pu, pb, va, NULL, NULL);
diff -r fa6548fa5ba2 -r 2dbc0a5aaceb usr.sbin/puffs/mount_9p/ninepuffs.h
--- a/usr.sbin/puffs/mount_9p/ninepuffs.h       Fri Jun 07 05:22:28 2019 +0000
+++ b/usr.sbin/puffs/mount_9p/ninepuffs.h       Fri Jun 07 05:34:34 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ninepuffs.h,v 1.13 2019/05/17 08:48:04 ozaki-r Exp $   */
+/*     $NetBSD: ninepuffs.h,v 1.14 2019/06/07 05:34:34 ozaki-r Exp $   */
 
 /*
  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
@@ -151,10 +151,13 @@
 int    proto_getqid(struct puffs_framebuf *, struct qid9p *);
 int    proto_getstat(struct puffs_usermount *, struct puffs_framebuf *, struct vattr *,
                      char **, uint16_t *);
-int    proto_expect_walk_nqids(struct puffs_framebuf *, uint16_t *);
+int    proto_expect_walk_nqids(struct puffs_usermount *,
+                               struct puffs_framebuf *, uint16_t *);
 int    proto_expect_stat(struct puffs_usermount *, struct puffs_framebuf *,
                          struct vattr *);
-int    proto_expect_qid(struct puffs_framebuf *, uint8_t, struct qid9p *);
+int    proto_expect_qid(struct puffs_usermount *, struct puffs_framebuf *,
+                        uint8_t, struct qid9p *);
+int    proto_handle_rerror(struct puffs_usermount *, struct puffs_framebuf *);
 
 int    proto_cc_dupfid(struct puffs_usermount *, p9pfid_t, p9pfid_t);
 int    proto_cc_clunkfid(struct puffs_usermount *, p9pfid_t, int);
diff -r fa6548fa5ba2 -r 2dbc0a5aaceb usr.sbin/puffs/mount_9p/node.c
--- a/usr.sbin/puffs/mount_9p/node.c    Fri Jun 07 05:22:28 2019 +0000
+++ b/usr.sbin/puffs/mount_9p/node.c    Fri Jun 07 05:34:34 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: node.c,v 1.22 2019/05/17 08:48:04 ozaki-r Exp $        */
+/*     $NetBSD: node.c,v 1.23 2019/06/07 05:34:34 ozaki-r Exp $        */
 
 /*
  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
@@ -27,7 +27,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: node.c,v 1.22 2019/05/17 08:48:04 ozaki-r Exp $");
+__RCSID("$NetBSD: node.c,v 1.23 2019/06/07 05:34:34 ozaki-r Exp $");
 #endif /* !lint */
 
 #include <assert.h>
@@ -62,6 +62,10 @@
        p9pbuf_put_4(pb, p9n->fid_base);
        GETRESPONSE(pb);
 
+       if (p9pbuf_get_type(pb) != P9PROTO_R_STAT) {
+               rv = proto_handle_rerror(pu, pb);
+               goto out;
+       }
        rv = proto_expect_stat(pu, pb, vap);
 
  out:
@@ -101,7 +105,7 @@
        p9pbuf_put_str(pb, pcn->pcn_name);
        GETRESPONSE(pb);
 
-       rv = proto_expect_walk_nqids(pb, &nqid);
+       rv = proto_expect_walk_nqids(pu, pb, &nqid);
        if (rv) {
                rv = ENOENT;
                goto out;
@@ -234,8 +238,9 @@
        proto_make_stat(pu, pb, va, NULL, pn->pn_va.va_type);
        GETRESPONSE(pb);
 
-       if (p9pbuf_get_type(pb) != P9PROTO_R_WSTAT)
-               rv = EPROTO;
+       if (p9pbuf_get_type(pb) != P9PROTO_R_WSTAT) {
+               rv = proto_handle_rerror(pu, pb);
+       }
 
  out:
        RETURN(rv);
@@ -330,7 +335,7 @@
                GETRESPONSE(pb);
 
                if (p9pbuf_get_type(pb) != P9PROTO_R_READ) {
-                       rv = EPROTO;
+                       rv = proto_handle_rerror(pu, pb);
                        break;
                }
 
@@ -378,7 +383,7 @@
                GETRESPONSE(pb);
 
                if (p9pbuf_get_type(pb) != P9PROTO_R_WRITE) {
-                       rv = EPROTO;
+                       rv = proto_handle_rerror(pu, pb);
                        break;
                }
 
@@ -430,7 +435,7 @@
                p9pbuf_put_str(pb, ""); /* extension[s] */
        GETRESPONSE(pb);
 
-       rv = proto_expect_qid(pb, P9PROTO_R_CREATE, &nqid);
+       rv = proto_expect_qid(pu, pb, P9PROTO_R_CREATE, &nqid);
        if (rv)
                goto out;
 
@@ -512,7 +517,7 @@
        GETRESPONSE(pb);
 
        if (p9pbuf_get_type(pb) != P9PROTO_R_REMOVE) {
-               rv = EPROTO;
+               rv = proto_handle_rerror(pu, pb);
        } else {
                proto_cc_clunkfid(pu, p9n->fid_base, 0);
                p9n->fid_base = P9P_INVALFID;
@@ -585,7 +590,7 @@
        GETRESPONSE(pb);
 
        if (p9pbuf_get_type(pb) != P9PROTO_R_WSTAT)
-               rv = EPROTO;
+               rv = proto_handle_rerror(pu, pb);
 
  out:
        RETURN(rv);
diff -r fa6548fa5ba2 -r 2dbc0a5aaceb usr.sbin/puffs/mount_9p/subr.c
--- a/usr.sbin/puffs/mount_9p/subr.c    Fri Jun 07 05:22:28 2019 +0000
+++ b/usr.sbin/puffs/mount_9p/subr.c    Fri Jun 07 05:34:34 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr.c,v 1.6 2007/11/30 19:02:39 pooka Exp $   */
+/*     $NetBSD: subr.c,v 1.7 2019/06/07 05:34:34 ozaki-r Exp $ */
 
 /*
  * Copyright (c) 2007  Antti Kantee.  All Rights Reserved.
@@ -27,7 +27,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: subr.c,v 1.6 2007/11/30 19:02:39 pooka Exp $");
+__RCSID("$NetBSD: subr.c,v 1.7 2019/06/07 05:34:34 ozaki-r Exp $");
 #endif /* !lint */
 
 #include <sys/types.h>
@@ -139,7 +139,7 @@
                GETRESPONSE(pb);
 
                if (p9pbuf_get_type(pb) != P9PROTO_R_READ) {



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