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NEX-14666 Need to provide SMB 2.1 Client
NEX-17187 panic in smbfs_acl_store
NEX-17231 smbfs create xattr files finds wrong file
NEX-17224 smbfs lookup EINVAL should be ENOENT
NEX-17260 SMB1 client fails to list directory after NEX-14666
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
Reviewed by: Rick McNeal <rick.mcneal@nexenta.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Reviewed by: Joyce McIntosh <joyce.mcintosh@nexenta.com>
and: (cleanup)
NEX-16818 Add fksmbcl development tool
NEX-17264 SMB client test tp_smbutil_013 fails after NEX-14666
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
and: (fix ref leaks)

@@ -19,18 +19,20 @@
  * CDDL HEADER END
  */
 
 /*
  * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
  */
 
 /*
  * Functions supporting Solaris Extended Attributes,
  * used to provide access to CIFS "named streams".
  */
 
 #include <sys/systm.h>
+#include <sys/inttypes.h>
 #include <sys/cred.h>
 #include <sys/vnode.h>
 #include <sys/vfs.h>
 #include <sys/filio.h>
 #include <sys/uio.h>

@@ -41,11 +43,13 @@
 #include <sys/stat.h>
 #include <sys/cmn_err.h>
 #include <sys/u8_textprep.h>
 
 #include <netsmb/smb_osdep.h>
+
 #include <netsmb/smb.h>
+#include <netsmb/smb2.h>
 #include <netsmb/smb_conn.h>
 #include <netsmb/smb_subr.h>
 #include <netsmb/smb_rq.h>
 
 #include <smbfs/smbfs.h>

@@ -287,163 +291,121 @@
 
         return (error);
 }
 
 /*
- * Fetch the entire attribute list here in findopen.
- * Will parse the results in findnext.
+ * Actually go OtW to get the list of "streams".
  *
  * This is called on the XATTR directory, so we
  * have to get the (real) parent object first.
  */
-/* ARGSUSED */
-int
-smbfs_xa_findopen(struct smbfs_fctx *ctx, struct smbnode *dnp,
-        const char *wildcard, int wclen)
+static int
+smbfs_xa_get_streaminfo(struct smbfs_fctx *ctx)
 {
         vnode_t *pvp;   /* parent */
         smbnode_t *pnp;
-        struct smb_t2rq *t2p;
-        struct smb_vc *vcp = SSTOVC(ctx->f_ssp);
-        struct mbchain *mbp;
+        smbnode_t *dnp = ctx->f_dnp;
+        struct mdchain *mdp;
         int error;
 
-        ASSERT(dnp->n_flag & N_XATTR);
-
-        ctx->f_type = ft_XA;
-        ctx->f_namesz = SMB_MAXFNAMELEN + 1;
-        if (SMB_UNICODE_STRINGS(SSTOVC(ctx->f_ssp)))
-                ctx->f_namesz *= 2;
-        ctx->f_name = kmem_alloc(ctx->f_namesz, KM_SLEEP);
-
         error = smbfs_xa_parent(SMBTOV(dnp), &pvp);
         if (error)
                 return (error);
         ASSERT(pvp);
         /* Note: pvp has a VN_HOLD */
         pnp = VTOSMB(pvp);
 
-        if (ctx->f_t2) {
-                smb_t2_done(ctx->f_t2);
-                ctx->f_t2 = NULL;
-        }
+        /*
+         * Get stream info into f_mdchain
+         */
+        mdp = &ctx->f_mdchain;
+        md_done(mdp);
 
-        error = smb_t2_alloc(SSTOCP(ctx->f_ssp),
-            SMB_TRANS2_QUERY_PATH_INFORMATION,
-            ctx->f_scred, &t2p);
+        if (SSTOVC(ctx->f_ssp)->vc_flags & SMBV_SMB2) {
+                error = smbfs_smb2_get_streaminfo(pnp, mdp, ctx->f_scred);
+        } else {
+                error = smbfs_smb1_get_streaminfo(pnp, mdp, ctx->f_scred);
+        }
         if (error)
                 goto out;
-        ctx->f_t2 = t2p;
 
-        mbp = &t2p->t2_tparam;
-        (void) mb_init(mbp);
-        (void) mb_put_uint16le(mbp, SMB_QFILEINFO_STREAM_INFO);
-        (void) mb_put_uint32le(mbp, 0);
-        error = smbfs_fullpath(mbp, vcp, pnp, NULL, NULL, 0);
-        if (error)
-                goto out;
-        t2p->t2_maxpcount = 2;
-        t2p->t2_maxdcount = INT16_MAX;
-        error = smb_t2_request(t2p);
-        if (error) {
-                if (t2p->t2_sr_error == NT_STATUS_INVALID_PARAMETER)
-                        error = ENOTSUP;
-        }
         /*
-         * No returned parameters to parse.
-         * Returned data are in t2_rdata,
-         * which we'll parse in _findnext.
-         * However, save the wildcard.
+         * Have stream info in ctx->f_mdchain
+         * Initialize buffer length, position.
          */
-        ctx->f_wildcard = wildcard;
-        ctx->f_wclen = wclen;
+        ctx->f_left = m_fixhdr(mdp->md_top);
+        ctx->f_eofs = 0;
 
+        /*
+         * After one successful call, we're at EOF.
+         */
+        ctx->f_flags |= SMBFS_RDD_EOF;
+
 out:
         VN_RELE(pvp);
         return (error);
 }
 
 /*
- * Get the next name in an XATTR directory into f_name
+ * Get a buffer of directory entries (if we don't already have
+ * some remaining in the current buffer) then decode one.
  */
-/* ARGSUSED */
 int
-smbfs_xa_findnext(struct smbfs_fctx *ctx, uint16_t limit)
+smbfs_xa_findopen(struct smbfs_fctx *ctx, struct smbnode *dnp,
+        const char *wildcard, int wclen)
 {
-        struct mdchain *mdp;
-        struct smb_t2rq *t2p;
-        uint32_t size, next;
-        uint64_t llongint;
-        int error, skip, used, nmlen;
 
-        t2p = ctx->f_t2;
-        mdp = &t2p->t2_rdata;
+        ASSERT(dnp->n_flag & N_XATTR);
 
-        if (ctx->f_flags & SMBFS_RDD_FINDSINGLE) {
-                ASSERT(ctx->f_wildcard);
-                SMBVDEBUG("wildcard: %s\n", ctx->f_wildcard);
-        }
+        ctx->f_type = ft_XA;
+        ctx->f_namesz = SMB_MAXFNAMELEN + 1;
+        ctx->f_name = kmem_alloc(ctx->f_namesz, KM_SLEEP);
+        ctx->f_infolevel = FileStreamInformation;
+        ctx->f_wildcard = wildcard;
+        ctx->f_wclen = wclen;
 
-again:
-        if (ctx->f_flags & SMBFS_RDD_EOF)
-                return (ENOENT);
+        return (0);
+}
 
-        /* Parse FILE_STREAM_INFORMATION */
-        if ((error = md_get_uint32le(mdp, &next)) != 0) /* offset to */
-                return (ENOENT);
-        if ((error = md_get_uint32le(mdp, &size)) != 0) /* name len */
-                return (ENOENT);
-        (void) md_get_uint64le(mdp, &llongint); /* file size */
-        ctx->f_attr.fa_size = llongint;
-        (void) md_get_uint64le(mdp, NULL);      /* alloc. size */
-        used = 4 + 4 + 8 + 8;   /* how much we consumed */
 
-        /*
-         * Copy the string, but skip the first char (":")
-         * Watch out for zero-length strings here.
+/*
+ * Get the next name in an XATTR directory
          */
-        if (SMB_UNICODE_STRINGS(SSTOVC(ctx->f_ssp))) {
-                if (size >= 2) {
-                        size -= 2; used += 2;
-                        (void) md_get_uint16le(mdp, NULL);
-                }
-                nmlen = min(size, SMB_MAXFNAMELEN * 2);
-        } else {
-                if (size >= 1) {
-                        size -= 1; used += 1;
-                        (void) md_get_uint8(mdp, NULL);
-                }
-                nmlen = min(size, SMB_MAXFNAMELEN);
-        }
+/* ARGSUSED */
+int
+smbfs_xa_findnext(struct smbfs_fctx *ctx, uint16_t limit)
+{
+        int error;
 
-        ASSERT(nmlen < ctx->f_namesz);
-        ctx->f_nmlen = nmlen;
-        error = md_get_mem(mdp, ctx->f_name, nmlen, MB_MSYSTEM);
+        /*
+         * If we've scanned to the end of the current buffer
+         * try to read anohther buffer of dir entries.
+         * Treat anything less than 8 bytes as an "empty"
+         * buffer to ensure we can read something.
+         * (There may be up to 8 bytes of padding.)
+         */
+again:
+        if ((ctx->f_eofs + 8) > ctx->f_left) {
+                /* Scanned the whole buffer. */
+                if (ctx->f_flags & SMBFS_RDD_EOF)
+                        return (ENOENT);
+                ctx->f_limit = limit;
+                error = smbfs_xa_get_streaminfo(ctx);
         if (error)
                 return (error);
-        used += nmlen;
+                ctx->f_otws++;
+        }
 
         /*
-         * Convert UCS-2 to UTF-8
+         * Decode one entry, advance f_eofs
          */
-        smbfs_fname_tolocal(ctx);
-        if (nmlen)
+        error = smbfs_decode_dirent(ctx);
+        if (error)
+                return (error);
                 SMBVDEBUG("name: %s\n", ctx->f_name);
-        else
-                SMBVDEBUG("null name!\n");
 
         /*
-         * Skip padding until next offset
-         */
-        if (next > used) {
-                skip = next - used;
-                (void) md_get_mem(mdp, NULL, skip, MB_MSYSTEM);
-        }
-        if (next == 0)
-                ctx->f_flags |= SMBFS_RDD_EOF;
-
-        /*
          * Chop off the trailing ":$DATA"
          * The 6 here is strlen(":$DATA")
          */
         if (ctx->f_nmlen >= 6) {
                 char *p = ctx->f_name + ctx->f_nmlen - 6;

@@ -460,12 +422,14 @@
          */
         if (ctx->f_nmlen == 0)
                 goto again;
 
         /*
-         * If this is a lookup of a specific name,
-         * skip past any non-matching names.
+         * When called by lookup, we'll have the "single" flag,
+         * and a name with no wildcards.  We need to filter here
+         * because smbfs_xa_get_streaminfo() gets ALL the names
+         * (not just those matching our pattern).
          */
         if (ctx->f_flags & SMBFS_RDD_FINDSINGLE) {
                 if (ctx->f_wclen != ctx->f_nmlen)
                         goto again;
                 if (u8_strcmp(ctx->f_wildcard, ctx->f_name,

@@ -486,10 +450,8 @@
 smbfs_xa_findclose(struct smbfs_fctx *ctx)
 {
 
         if (ctx->f_name)
                 kmem_free(ctx->f_name, ctx->f_namesz);
-        if (ctx->f_t2)
-                smb_t2_done(ctx->f_t2);
 
         return (0);
 }