xref: /illumos-gate/usr/src/lib/smbclnt/libfknsmb/common/fake_strsubr.c (revision 66582b606a8194f7f3ba5b3a3a6dca5b0d346361)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
22 /*	  All Rights Reserved	*/
23 
24 /*
25  * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  *
28  * Copyright (c) 2016 by Delphix. All rights reserved.
29  * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
30  */
31 
32 #include <sys/types.h>
33 #include <sys/param.h>
34 
35 #include <sys/atomic.h>
36 #include <sys/stream.h>
37 #include <sys/strsubr.h>
38 #include <sys/cmn_err.h>
39 
40 #include <sys/strft.h>
41 
42 int str_ftnever = 0;
43 
44 static void mblk_free(mblk_t *);
45 static void esballoc_mblk_free(mblk_t *);
46 
47 /*
48  * A few things from os/strsubr.c
49  */
50 
51 int
52 strwaitbuf(size_t size, int pri)
53 {
54 	return (0);
55 }
56 
57 /*
58  * Return size of message of block type (bp->b_datap->db_type)
59  */
60 size_t
61 xmsgsize(mblk_t *bp)
62 {
63 	unsigned char type;
64 	size_t count = 0;
65 
66 	type = bp->b_datap->db_type;
67 
68 	for (; bp; bp = bp->b_cont) {
69 		if (type != bp->b_datap->db_type)
70 			break;
71 		ASSERT(bp->b_wptr >= bp->b_rptr);
72 		count += bp->b_wptr - bp->b_rptr;
73 	}
74 	return (count);
75 }
76 
77 /* ARGSUSED */
78 bufcall_id_t
79 bufcall(size_t size, uint_t pri, void (*func)(void *), void *arg)
80 {
81 	cmn_err(CE_NOTE, "bufcall() called!");
82 	return ("fake bufcall id");
83 }
84 
85 /* ARGSUSED */
86 void
87 unbufcall(bufcall_id_t id)
88 {
89 }
90 
91 /* ARGSUSED */
92 void
93 freebs_enqueue(mblk_t *mp, dblk_t *dbp)
94 {
95 	/*
96 	 * Won't bother with esb_queue_t async free here.
97 	 * Rather just free this mblk directly.
98 	 */
99 	esballoc_mblk_free(mp);
100 }
101 
102 static void
103 esballoc_mblk_free(mblk_t *mp)
104 {
105 	mblk_t	*nextmp;
106 
107 	for (; mp != NULL; mp = nextmp) {
108 		nextmp = mp->b_next;
109 		mp->b_next = NULL;
110 		mblk_free(mp);
111 	}
112 }
113 
114 static void
115 mblk_free(mblk_t *mp)
116 {
117 	dblk_t *dbp = mp->b_datap;
118 	frtn_t *frp = dbp->db_frtnp;
119 
120 	mp->b_next = NULL;
121 	if (dbp->db_fthdr != NULL)
122 		str_ftfree(dbp);
123 
124 	ASSERT(dbp->db_fthdr == NULL);
125 	frp->free_func(frp->free_arg);
126 	ASSERT(dbp->db_mblk == mp);
127 
128 	if (dbp->db_credp != NULL) {
129 		crfree(dbp->db_credp);
130 		dbp->db_credp = NULL;
131 	}
132 	dbp->db_cpid = -1;
133 	dbp->db_struioflag = 0;
134 	dbp->db_struioun.cksum.flags = 0;
135 
136 	kmem_cache_free(dbp->db_cache, dbp);
137 }
138 
139 /* ARGSUSED */
140 mblk_t *
141 mmd_copy(mblk_t *bp, int flags)
142 {
143 	return (NULL);
144 }
145 
146 /*
147  * A little bit from os/streamio.c
148  */
149 
150 static volatile uint32_t ioc_id;
151 
152 int
153 getiocseqno(void)
154 {
155 	uint32_t i;
156 
157 	i = atomic_inc_32_nv(&ioc_id);
158 
159 	return ((int)i);
160 }
161