xref: /titanic_51/usr/src/cmd/ibd_upgrade/ibd_delete_link.c (revision dd51520e127b452179a2ce4ea3bd8dee949f9afe)
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 
22 /*
23  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
24  */
25 
26 #include <stdio.h>
27 #include <door.h>
28 #include <errno.h>
29 #include <strings.h>
30 #include <sys/mman.h>
31 #include <libdladm.h>
32 #include <libdlib.h>
33 #include <libdllink.h>
34 
35 extern dladm_status_t	dladm_door_fd(dladm_handle_t, int *);
36 
37 static dladm_status_t
38 ibd_dladm_door_call(dladm_handle_t handle, void *arg, size_t asize, void *rbuf,
39     size_t rsize)
40 {
41 	door_arg_t	darg;
42 	int		door_fd;
43 	dladm_status_t	status = DLADM_STATUS_OK;
44 
45 	darg.data_ptr	= arg;
46 	darg.data_size	= asize;
47 	darg.desc_ptr	= NULL;
48 	darg.desc_num	= 0;
49 	darg.rbuf	= rbuf;
50 	darg.rsize	= rsize;
51 
52 	/* The door descriptor is opened if it isn't already */
53 	if ((status = dladm_door_fd(handle, &door_fd)) != DLADM_STATUS_OK)
54 		return (status);
55 
56 	if (door_call(door_fd, &darg) == -1)
57 		return (DLADM_STATUS_FAILED);
58 
59 	if (darg.rbuf != rbuf) {
60 		/*
61 		 * The size of the input rbuf is not big enough so that
62 		 * the door allocate the rbuf itself. In this case, simply
63 		 * think something wrong with the door call.
64 		 */
65 		(void) munmap(darg.rbuf, darg.rsize);
66 		return (DLADM_STATUS_TOOSMALL);
67 	}
68 
69 	if (darg.rsize != rsize)
70 		return (DLADM_STATUS_FAILED);
71 
72 	if ((((dlmgmt_retval_t *)rbuf)->lr_err) == 0)
73 		return (DLADM_STATUS_OK);
74 	else
75 		return (DLADM_STATUS_FAILED);
76 }
77 
78 static int
79 ibd_delete_link(dladm_handle_t dlh, char *link)
80 {
81 	dlmgmt_door_getlinkid_t		getlinkid;
82 	dlmgmt_getlinkid_retval_t	retval;
83 	datalink_id_t			linkid;
84 	dladm_status_t			status;
85 	char				errmsg[DLADM_STRSIZE];
86 
87 	getlinkid.ld_cmd = DLMGMT_CMD_GETLINKID;
88 	(void) strlcpy(getlinkid.ld_link, link, MAXLINKNAMELEN);
89 
90 	if ((status = ibd_dladm_door_call(dlh, &getlinkid, sizeof (getlinkid),
91 	    &retval, sizeof (retval))) != DLADM_STATUS_OK) {
92 		(void) fprintf(stderr,
93 		    "dladm_door_call failed: %s; linkname = %s\n",
94 		    dladm_status2str(status, errmsg), link);
95 		return (status);
96 	}
97 
98 	if (retval.lr_class != DATALINK_CLASS_PHYS) {
99 		(void) fprintf(stderr,
100 		    "Not a physical link: linkname = %s, class = 0x%x\n",
101 		    link, (uint_t)retval.lr_class);
102 		return (status);
103 	}
104 
105 	linkid = retval.lr_linkid;
106 
107 	if ((status = dladm_remove_conf(dlh, linkid)) != DLADM_STATUS_OK) {
108 		(void) fprintf(stderr, "dladm_remove_conf failed: %s\n",
109 		    dladm_status2str(status, errmsg));
110 		return (status);
111 	}
112 
113 	if ((status = dladm_destroy_datalink_id(dlh, linkid,
114 	    DLADM_OPT_ACTIVE | DLADM_OPT_PERSIST)) != DLADM_STATUS_OK) {
115 		(void) fprintf(stderr, "dladm_destroy_datalink_id failed: %s\n",
116 		    dladm_status2str(status, errmsg));
117 	}
118 
119 	return (status);
120 }
121 
122 int
123 main(int argc, char *argv[])
124 {
125 	dladm_handle_t	dlh;
126 	int		i;
127 	dladm_status_t	status;
128 	char		errmsg[DLADM_STRSIZE];
129 
130 	if (argc < 2) {
131 		(void) fprintf(stderr,
132 		    "Usage: ibd_delete_link linkname ...\n");
133 		return (2);
134 	}
135 
136 	if ((status = dladm_open(&dlh)) != DLADM_STATUS_OK) {
137 		(void) fprintf(stderr, "Failed to open dladm handle: %s\n",
138 		    dladm_status2str(status, errmsg));
139 		return (1);
140 	}
141 
142 	for (i = 1; i < argc; i++) {
143 		if (ibd_delete_link(dlh, argv[i]) != DLADM_STATUS_OK) {
144 			dladm_close(dlh);
145 			return (1);
146 		}
147 	}
148 
149 	dladm_close(dlh);
150 	return (0);
151 }
152