1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2002-2003 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <sys/types.h>
30*0Sstevel@tonic-gate #include <stdlib.h>
31*0Sstevel@tonic-gate #include <dhcp_impl.h>
32*0Sstevel@tonic-gate #include <sys/time.h>
33*0Sstevel@tonic-gate #include <sys/nvpair.h>
34*0Sstevel@tonic-gate #include <netinet/inetutil.h>
35*0Sstevel@tonic-gate #include <netinet/in.h>
36*0Sstevel@tonic-gate #include <arpa/inet.h>
37*0Sstevel@tonic-gate #include <strings.h>
38*0Sstevel@tonic-gate #include <net/if.h>
39*0Sstevel@tonic-gate #if defined(_BOOT)
40*0Sstevel@tonic-gate #include <sys/salib.h>
41*0Sstevel@tonic-gate #include <sys/bootcmn.h>
42*0Sstevel@tonic-gate #include <ipv4.h>
43*0Sstevel@tonic-gate #include <dhcpv4.h>
44*0Sstevel@tonic-gate #endif /* defined(_BOOT) */
45*0Sstevel@tonic-gate #include <bootinfo.h>
46*0Sstevel@tonic-gate #include <bootinfo_aux.h>
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate /*
49*0Sstevel@tonic-gate * Declarations and definitions describing parameters which may be known by
50*0Sstevel@tonic-gate * a bootconf name, a property of /chosen, a DHCP option or a 'bootmisc' name.
51*0Sstevel@tonic-gate */
52*0Sstevel@tonic-gate typedef struct {
53*0Sstevel@tonic-gate const char *opt_name; /* DHCP option name */
54*0Sstevel@tonic-gate dsym_cdtype_t opt_type; /* DHCP option type (dhcp_symbol.h) */
55*0Sstevel@tonic-gate uchar_t opt_cat; /* DHCP option category */
56*0Sstevel@tonic-gate uint16_t opt_code; /* DHCP option code */
57*0Sstevel@tonic-gate uint16_t opt_size; /* DHCP option size (FIELDs only) */
58*0Sstevel@tonic-gate } bi_dhcpopt_t;
59*0Sstevel@tonic-gate
60*0Sstevel@tonic-gate /*
61*0Sstevel@tonic-gate * Possible values for the 'bi_flags' field below.
62*0Sstevel@tonic-gate */
63*0Sstevel@tonic-gate #define BI_F_BYTES 0x01 /* chosen value is bytes, not string */
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate typedef struct {
66*0Sstevel@tonic-gate const char *bi_name; /* parameter name */
67*0Sstevel@tonic-gate int bi_repository; /* entry's repository(s) */
68*0Sstevel@tonic-gate int bi_flags; /* BI_F_BYTES or zero */
69*0Sstevel@tonic-gate bi_dhcpopt_t *bi_dhcp; /* &dhcpopt struct */
70*0Sstevel@tonic-gate } bi_param_t;
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate /*
73*0Sstevel@tonic-gate * DHCP options which have bootinfo equivalents, and the information
74*0Sstevel@tonic-gate * necessary to retrieve their values via dhcp_getinfo(). The 'type'
75*0Sstevel@tonic-gate * is necessary so that all values may be converted to ascii strings.
76*0Sstevel@tonic-gate */
77*0Sstevel@tonic-gate static bi_dhcpopt_t Yiaddr = {
78*0Sstevel@tonic-gate "Yiaddr", DSYM_IP, DSYM_FIELD, 16, 4
79*0Sstevel@tonic-gate };
80*0Sstevel@tonic-gate static bi_dhcpopt_t Subnet = {
81*0Sstevel@tonic-gate "Subnet", DSYM_IP, DSYM_STANDARD, 1, 0
82*0Sstevel@tonic-gate };
83*0Sstevel@tonic-gate static bi_dhcpopt_t Router = {
84*0Sstevel@tonic-gate "Router", DSYM_IP, DSYM_STANDARD, 3, 0
85*0Sstevel@tonic-gate };
86*0Sstevel@tonic-gate static bi_dhcpopt_t Hostname = {
87*0Sstevel@tonic-gate "Hostname", DSYM_ASCII, DSYM_STANDARD, 12, 0
88*0Sstevel@tonic-gate };
89*0Sstevel@tonic-gate static bi_dhcpopt_t ClientID = {
90*0Sstevel@tonic-gate "ClientID", DSYM_OCTET, DSYM_STANDARD, 61, 0
91*0Sstevel@tonic-gate };
92*0Sstevel@tonic-gate static bi_dhcpopt_t SHTTPproxy = {
93*0Sstevel@tonic-gate "SHTTPproxy", DSYM_ASCII, DSYM_VENDOR, 17, 0
94*0Sstevel@tonic-gate };
95*0Sstevel@tonic-gate #if defined(_BOOT)
96*0Sstevel@tonic-gate static bi_dhcpopt_t BootFile = {
97*0Sstevel@tonic-gate "BootFile", DSYM_ASCII, DSYM_FIELD, 108, 128
98*0Sstevel@tonic-gate };
99*0Sstevel@tonic-gate static bi_dhcpopt_t SbootURI = {
100*0Sstevel@tonic-gate "SbootURI", DSYM_ASCII, DSYM_VENDOR, 16, 0
101*0Sstevel@tonic-gate };
102*0Sstevel@tonic-gate #else
103*0Sstevel@tonic-gate static bi_dhcpopt_t SsysidCF = {
104*0Sstevel@tonic-gate "SsysidCF", DSYM_ASCII, DSYM_VENDOR, 13, 0
105*0Sstevel@tonic-gate };
106*0Sstevel@tonic-gate static bi_dhcpopt_t SjumpsCF = {
107*0Sstevel@tonic-gate "SjumpsCF", DSYM_ASCII, DSYM_VENDOR, 14, 0
108*0Sstevel@tonic-gate };
109*0Sstevel@tonic-gate #endif /* defined(_BOOT) */
110*0Sstevel@tonic-gate
111*0Sstevel@tonic-gate /*
112*0Sstevel@tonic-gate * bootinfo's main data structure.
113*0Sstevel@tonic-gate */
114*0Sstevel@tonic-gate static bi_param_t bi_params[] = {
115*0Sstevel@tonic-gate /*
116*0Sstevel@tonic-gate * Parameters from /chosen or DHCP:
117*0Sstevel@tonic-gate */
118*0Sstevel@tonic-gate { BI_HOST_IP, BI_R_CHOSEN|BI_R_DHCPOPT,
119*0Sstevel@tonic-gate 0, &Yiaddr },
120*0Sstevel@tonic-gate { BI_SUBNET_MASK, BI_R_CHOSEN|BI_R_DHCPOPT,
121*0Sstevel@tonic-gate 0, &Subnet },
122*0Sstevel@tonic-gate { BI_ROUTER_IP, BI_R_CHOSEN|BI_R_DHCPOPT,
123*0Sstevel@tonic-gate 0, &Router },
124*0Sstevel@tonic-gate { BI_HOSTNAME, BI_R_CHOSEN|BI_R_DHCPOPT,
125*0Sstevel@tonic-gate 0, &Hostname },
126*0Sstevel@tonic-gate { BI_CLIENT_ID, BI_R_CHOSEN|BI_R_DHCPOPT,
127*0Sstevel@tonic-gate BI_F_BYTES, &ClientID },
128*0Sstevel@tonic-gate { BI_HTTP_PROXY, BI_R_CHOSEN|BI_R_DHCPOPT,
129*0Sstevel@tonic-gate 0, &SHTTPproxy },
130*0Sstevel@tonic-gate
131*0Sstevel@tonic-gate #if defined(_BOOT)
132*0Sstevel@tonic-gate /*
133*0Sstevel@tonic-gate * Parameters from /chosen or DHCP:
134*0Sstevel@tonic-gate */
135*0Sstevel@tonic-gate { BI_NETWORK_BOOT_FILE, BI_R_CHOSEN|BI_R_DHCPOPT,
136*0Sstevel@tonic-gate 0, &SbootURI },
137*0Sstevel@tonic-gate
138*0Sstevel@tonic-gate /*
139*0Sstevel@tonic-gate * Parameters from DHCP only:
140*0Sstevel@tonic-gate */
141*0Sstevel@tonic-gate { BI_BOOTFILE, BI_R_DHCPOPT,
142*0Sstevel@tonic-gate 0, &BootFile },
143*0Sstevel@tonic-gate
144*0Sstevel@tonic-gate /*
145*0Sstevel@tonic-gate * Parameters from /chosen only:
146*0Sstevel@tonic-gate */
147*0Sstevel@tonic-gate { BI_BOOTP_RESPONSE, BI_R_CHOSEN,
148*0Sstevel@tonic-gate BI_F_BYTES, NULL },
149*0Sstevel@tonic-gate { BI_NET_CONFIG_STRATEGY, BI_R_CHOSEN,
150*0Sstevel@tonic-gate 0, NULL },
151*0Sstevel@tonic-gate
152*0Sstevel@tonic-gate /*
153*0Sstevel@tonic-gate * Parameters from 'bootmisc' only:
154*0Sstevel@tonic-gate */
155*0Sstevel@tonic-gate { BI_BOOTSERVER, BI_R_BOOTMISC,
156*0Sstevel@tonic-gate 0, NULL },
157*0Sstevel@tonic-gate { BI_AES_KEY, BI_R_BOOTMISC,
158*0Sstevel@tonic-gate BI_F_BYTES, NULL },
159*0Sstevel@tonic-gate { BI_3DES_KEY, BI_R_BOOTMISC,
160*0Sstevel@tonic-gate BI_F_BYTES, NULL },
161*0Sstevel@tonic-gate { BI_SHA1_KEY, BI_R_BOOTMISC,
162*0Sstevel@tonic-gate BI_F_BYTES, NULL },
163*0Sstevel@tonic-gate #else
164*0Sstevel@tonic-gate /*
165*0Sstevel@tonic-gate * Parameters from DHCP only:
166*0Sstevel@tonic-gate */
167*0Sstevel@tonic-gate { BI_SYSIDCFG, BI_R_DHCPOPT,
168*0Sstevel@tonic-gate 0, &SsysidCF },
169*0Sstevel@tonic-gate { BI_JUMPSCFG, BI_R_DHCPOPT,
170*0Sstevel@tonic-gate 0, &SjumpsCF },
171*0Sstevel@tonic-gate
172*0Sstevel@tonic-gate /*
173*0Sstevel@tonic-gate * Parameters from /chosen or 'bootmisc':
174*0Sstevel@tonic-gate */
175*0Sstevel@tonic-gate { BI_NET_CONFIG_STRATEGY, BI_R_CHOSEN|BI_R_BOOTMISC,
176*0Sstevel@tonic-gate 0, NULL },
177*0Sstevel@tonic-gate
178*0Sstevel@tonic-gate /*
179*0Sstevel@tonic-gate * Parameters from 'bootmisc' only:
180*0Sstevel@tonic-gate */
181*0Sstevel@tonic-gate { BI_ROOTFS_TYPE, BI_R_BOOTMISC,
182*0Sstevel@tonic-gate 0, NULL },
183*0Sstevel@tonic-gate { BI_INTERFACE_NAME, BI_R_BOOTMISC,
184*0Sstevel@tonic-gate 0, NULL },
185*0Sstevel@tonic-gate #endif /* defined(_BOOT) */
186*0Sstevel@tonic-gate
187*0Sstevel@tonic-gate NULL
188*0Sstevel@tonic-gate };
189*0Sstevel@tonic-gate
190*0Sstevel@tonic-gate /*
191*0Sstevel@tonic-gate * Bootmisc data is handled internally as a nvpair list.
192*0Sstevel@tonic-gate */
193*0Sstevel@tonic-gate static nvlist_t *bi_nvl = NULL;
194*0Sstevel@tonic-gate
195*0Sstevel@tonic-gate
196*0Sstevel@tonic-gate /*
197*0Sstevel@tonic-gate * Scan our parameter table to see whether 'name' matches any entry.
198*0Sstevel@tonic-gate */
199*0Sstevel@tonic-gate static bi_param_t *
bi_find_param(const char * name)200*0Sstevel@tonic-gate bi_find_param(const char *name)
201*0Sstevel@tonic-gate {
202*0Sstevel@tonic-gate bi_param_t *bip;
203*0Sstevel@tonic-gate
204*0Sstevel@tonic-gate for (bip = bi_params; bip->bi_name != NULL; bip++) {
205*0Sstevel@tonic-gate if (strcmp(name, bip->bi_name) == 0 ||
206*0Sstevel@tonic-gate ((bip->bi_repository & BI_R_DHCPOPT) &&
207*0Sstevel@tonic-gate strcmp(name, bip->bi_dhcp->opt_name) == 0)) {
208*0Sstevel@tonic-gate return (bip);
209*0Sstevel@tonic-gate }
210*0Sstevel@tonic-gate }
211*0Sstevel@tonic-gate return (NULL);
212*0Sstevel@tonic-gate }
213*0Sstevel@tonic-gate
214*0Sstevel@tonic-gate /*
215*0Sstevel@tonic-gate * Functions for retrieving /chosen, DHCP and bootmisc data.
216*0Sstevel@tonic-gate */
217*0Sstevel@tonic-gate static int
bi_getval_chosen(bi_param_t * bip,void * valbuf,size_t * vallenp)218*0Sstevel@tonic-gate bi_getval_chosen(bi_param_t *bip, void *valbuf, size_t *vallenp)
219*0Sstevel@tonic-gate {
220*0Sstevel@tonic-gate size_t buflen = *vallenp;
221*0Sstevel@tonic-gate
222*0Sstevel@tonic-gate if (!bi_get_chosen_prop(bip->bi_name, valbuf, vallenp)) {
223*0Sstevel@tonic-gate return (BI_E_NOVAL);
224*0Sstevel@tonic-gate } else if (*vallenp > buflen) {
225*0Sstevel@tonic-gate return (BI_E_BUF2SMALL);
226*0Sstevel@tonic-gate }
227*0Sstevel@tonic-gate
228*0Sstevel@tonic-gate return (BI_E_SUCCESS);
229*0Sstevel@tonic-gate }
230*0Sstevel@tonic-gate
231*0Sstevel@tonic-gate static int
bi_getval_dhcpopt(bi_param_t * bip,void * valbuf,size_t * vallenp)232*0Sstevel@tonic-gate bi_getval_dhcpopt(bi_param_t *bip, void *valbuf, size_t *vallenp)
233*0Sstevel@tonic-gate {
234*0Sstevel@tonic-gate void *val;
235*0Sstevel@tonic-gate size_t len, buflen = *vallenp;
236*0Sstevel@tonic-gate struct in_addr ipaddr;
237*0Sstevel@tonic-gate
238*0Sstevel@tonic-gate if (bip->bi_dhcp->opt_type == DSYM_IP) {
239*0Sstevel@tonic-gate val = &ipaddr;
240*0Sstevel@tonic-gate len = sizeof (ipaddr);
241*0Sstevel@tonic-gate } else {
242*0Sstevel@tonic-gate val = valbuf;
243*0Sstevel@tonic-gate len = *vallenp;
244*0Sstevel@tonic-gate }
245*0Sstevel@tonic-gate
246*0Sstevel@tonic-gate if (!bi_get_dhcp_info(bip->bi_dhcp->opt_cat, bip->bi_dhcp->opt_code,
247*0Sstevel@tonic-gate bip->bi_dhcp->opt_size, val, &len)) {
248*0Sstevel@tonic-gate return (BI_E_NOVAL);
249*0Sstevel@tonic-gate }
250*0Sstevel@tonic-gate
251*0Sstevel@tonic-gate switch (bip->bi_dhcp->opt_type) {
252*0Sstevel@tonic-gate case DSYM_IP:
253*0Sstevel@tonic-gate if (buflen < INET_ADDRSTRLEN + 1) {
254*0Sstevel@tonic-gate *vallenp = len;
255*0Sstevel@tonic-gate return (BI_E_BUF2SMALL);
256*0Sstevel@tonic-gate }
257*0Sstevel@tonic-gate len = strlen(strcpy(valbuf, inet_ntoa(ipaddr))) + 1;
258*0Sstevel@tonic-gate break;
259*0Sstevel@tonic-gate
260*0Sstevel@tonic-gate case DSYM_ASCII:
261*0Sstevel@tonic-gate if (len >= buflen)
262*0Sstevel@tonic-gate return (BI_E_BUF2SMALL);
263*0Sstevel@tonic-gate
264*0Sstevel@tonic-gate ((uchar_t *)valbuf)[len++] = '\0';
265*0Sstevel@tonic-gate break;
266*0Sstevel@tonic-gate }
267*0Sstevel@tonic-gate *vallenp = len;
268*0Sstevel@tonic-gate
269*0Sstevel@tonic-gate return (BI_E_SUCCESS);
270*0Sstevel@tonic-gate }
271*0Sstevel@tonic-gate
272*0Sstevel@tonic-gate static int
bi_getval_bootmisc(bi_param_t * bip,void * valbuf,size_t * vallenp)273*0Sstevel@tonic-gate bi_getval_bootmisc(bi_param_t *bip, void *valbuf, size_t *vallenp)
274*0Sstevel@tonic-gate {
275*0Sstevel@tonic-gate uchar_t *val;
276*0Sstevel@tonic-gate uint_t len;
277*0Sstevel@tonic-gate
278*0Sstevel@tonic-gate if (nvlist_lookup_byte_array(bi_nvl, (char *)bip->bi_name,
279*0Sstevel@tonic-gate &val, &len) != 0) {
280*0Sstevel@tonic-gate return (BI_E_NOVAL);
281*0Sstevel@tonic-gate } else if (*vallenp < len) {
282*0Sstevel@tonic-gate *vallenp = len;
283*0Sstevel@tonic-gate return (BI_E_BUF2SMALL);
284*0Sstevel@tonic-gate }
285*0Sstevel@tonic-gate *vallenp = len;
286*0Sstevel@tonic-gate (void) memcpy(valbuf, val, *vallenp);
287*0Sstevel@tonic-gate
288*0Sstevel@tonic-gate return (BI_E_SUCCESS);
289*0Sstevel@tonic-gate }
290*0Sstevel@tonic-gate
291*0Sstevel@tonic-gate /*
292*0Sstevel@tonic-gate * This is also called from the userland bootinfo_aux.c to initialize
293*0Sstevel@tonic-gate * its bootmisc data.
294*0Sstevel@tonic-gate */
295*0Sstevel@tonic-gate boolean_t
bi_put_bootmisc(const char * name,const void * valbuf,size_t vallen)296*0Sstevel@tonic-gate bi_put_bootmisc(const char *name, const void *valbuf, size_t vallen)
297*0Sstevel@tonic-gate {
298*0Sstevel@tonic-gate return (nvlist_add_byte_array(bi_nvl, (char *)name,
299*0Sstevel@tonic-gate (uchar_t *)valbuf, (uint_t)vallen) == 0);
300*0Sstevel@tonic-gate }
301*0Sstevel@tonic-gate
302*0Sstevel@tonic-gate #if defined(_BOOT)
303*0Sstevel@tonic-gate /*
304*0Sstevel@tonic-gate * Functions for storing /chosen and bootmisc data.
305*0Sstevel@tonic-gate */
306*0Sstevel@tonic-gate static int
bi_putval_chosen(bi_param_t * bip,const void * valbuf,size_t vallen)307*0Sstevel@tonic-gate bi_putval_chosen(bi_param_t *bip, const void *valbuf, size_t vallen)
308*0Sstevel@tonic-gate {
309*0Sstevel@tonic-gate return (bi_put_chosen_prop(bip->bi_name, valbuf, vallen,
310*0Sstevel@tonic-gate (bip->bi_flags & BI_F_BYTES)) ? BI_E_SUCCESS : BI_E_ERROR);
311*0Sstevel@tonic-gate }
312*0Sstevel@tonic-gate
313*0Sstevel@tonic-gate static int
bi_putval_bootmisc(bi_param_t * bip,const void * valbuf,size_t vallen)314*0Sstevel@tonic-gate bi_putval_bootmisc(bi_param_t *bip, const void *valbuf, size_t vallen)
315*0Sstevel@tonic-gate {
316*0Sstevel@tonic-gate return (bi_put_bootmisc(bip->bi_name, valbuf, vallen)
317*0Sstevel@tonic-gate ? BI_E_SUCCESS : BI_E_ERROR);
318*0Sstevel@tonic-gate }
319*0Sstevel@tonic-gate #endif /* defined(_BOOT) */
320*0Sstevel@tonic-gate
321*0Sstevel@tonic-gate
322*0Sstevel@tonic-gate /*
323*0Sstevel@tonic-gate * Deallocate resources, etc. after accessing bootinfo.
324*0Sstevel@tonic-gate */
325*0Sstevel@tonic-gate void
bootinfo_end(void)326*0Sstevel@tonic-gate bootinfo_end(void)
327*0Sstevel@tonic-gate {
328*0Sstevel@tonic-gate if (bi_nvl != NULL) {
329*0Sstevel@tonic-gate nvlist_free(bi_nvl);
330*0Sstevel@tonic-gate bi_nvl = NULL;
331*0Sstevel@tonic-gate bi_end_bootinfo();
332*0Sstevel@tonic-gate }
333*0Sstevel@tonic-gate }
334*0Sstevel@tonic-gate
335*0Sstevel@tonic-gate /*
336*0Sstevel@tonic-gate * Perform bootinfo initialization.
337*0Sstevel@tonic-gate */
338*0Sstevel@tonic-gate boolean_t
bootinfo_init(void)339*0Sstevel@tonic-gate bootinfo_init(void)
340*0Sstevel@tonic-gate {
341*0Sstevel@tonic-gate if (bi_nvl == NULL &&
342*0Sstevel@tonic-gate nvlist_alloc(&bi_nvl, NV_UNIQUE_NAME, 0) == 0) {
343*0Sstevel@tonic-gate if (!bi_init_bootinfo()) {
344*0Sstevel@tonic-gate nvlist_free(bi_nvl);
345*0Sstevel@tonic-gate bi_nvl = NULL;
346*0Sstevel@tonic-gate }
347*0Sstevel@tonic-gate }
348*0Sstevel@tonic-gate
349*0Sstevel@tonic-gate return (bi_nvl != NULL);
350*0Sstevel@tonic-gate }
351*0Sstevel@tonic-gate
352*0Sstevel@tonic-gate /*
353*0Sstevel@tonic-gate * bootinfo_get(const char *name, void *valbuf, size_t *vallenp,
354*0Sstevel@tonic-gate * int *repository);
355*0Sstevel@tonic-gate *
356*0Sstevel@tonic-gate * Obtain a value for a named boot parameter from one of a number of possible
357*0Sstevel@tonic-gate * repositories:
358*0Sstevel@tonic-gate *
359*0Sstevel@tonic-gate * - stored properties under /chosen in the device tree;
360*0Sstevel@tonic-gate * - returned DHCP data;
361*0Sstevel@tonic-gate * - miscellaneous boot information, determined from the standalone or
362*0Sstevel@tonic-gate * the kernel (depending on whether we're in the standalone or userland).
363*0Sstevel@tonic-gate *
364*0Sstevel@tonic-gate * These repositories are interrogated in the order listed above; the first
365*0Sstevel@tonic-gate * one to match is value returned.
366*0Sstevel@tonic-gate *
367*0Sstevel@tonic-gate * Returns:
368*0Sstevel@tonic-gate * 0 => successful, value copied to valbuf, length assigned to *vallen.
369*0Sstevel@tonic-gate * >0 => error (BI_E_* codes defined in bootinfo.h)
370*0Sstevel@tonic-gate */
371*0Sstevel@tonic-gate bi_errcode_t
bootinfo_get(const char * name,void * valbufp,size_t * vallenp,int * repositoryp)372*0Sstevel@tonic-gate bootinfo_get(const char *name, void *valbufp, size_t *vallenp,
373*0Sstevel@tonic-gate int *repositoryp)
374*0Sstevel@tonic-gate {
375*0Sstevel@tonic-gate bi_param_t *bip;
376*0Sstevel@tonic-gate int repositories;
377*0Sstevel@tonic-gate int err;
378*0Sstevel@tonic-gate size_t zerolen = 0;
379*0Sstevel@tonic-gate
380*0Sstevel@tonic-gate /*
381*0Sstevel@tonic-gate * Check whether we were successfully initialized.
382*0Sstevel@tonic-gate */
383*0Sstevel@tonic-gate if (bi_nvl == NULL) {
384*0Sstevel@tonic-gate return (BI_E_ERROR);
385*0Sstevel@tonic-gate }
386*0Sstevel@tonic-gate
387*0Sstevel@tonic-gate /*
388*0Sstevel@tonic-gate * Determine which repositories might be accessed; a NULL pointer
389*0Sstevel@tonic-gate * means to (possibly) access them all.
390*0Sstevel@tonic-gate */
391*0Sstevel@tonic-gate if (repositoryp != NULL) {
392*0Sstevel@tonic-gate repositories = *repositoryp;
393*0Sstevel@tonic-gate *repositoryp = 0;
394*0Sstevel@tonic-gate } else {
395*0Sstevel@tonic-gate repositories = BI_R_ALL;
396*0Sstevel@tonic-gate }
397*0Sstevel@tonic-gate
398*0Sstevel@tonic-gate /*
399*0Sstevel@tonic-gate * Check that we know about this name in one or more of the
400*0Sstevel@tonic-gate * requested repositories.
401*0Sstevel@tonic-gate */
402*0Sstevel@tonic-gate if ((bip = bi_find_param(name)) == NULL) {
403*0Sstevel@tonic-gate return (BI_E_ILLNAME);
404*0Sstevel@tonic-gate }
405*0Sstevel@tonic-gate repositories &= bip->bi_repository;
406*0Sstevel@tonic-gate if (repositories == 0) {
407*0Sstevel@tonic-gate return (BI_E_ILLNAME);
408*0Sstevel@tonic-gate }
409*0Sstevel@tonic-gate
410*0Sstevel@tonic-gate /*
411*0Sstevel@tonic-gate * The caller may simply be enquiring whether a value is present:
412*0Sstevel@tonic-gate *
413*0Sstevel@tonic-gate * bootinfo_get(name, NULL, NULL, repository) == BI_E_BUF2SMALL
414*0Sstevel@tonic-gate *
415*0Sstevel@tonic-gate * indicates that there is a value, but doesn't fetch it.
416*0Sstevel@tonic-gate */
417*0Sstevel@tonic-gate if (vallenp == NULL) {
418*0Sstevel@tonic-gate vallenp = &zerolen;
419*0Sstevel@tonic-gate }
420*0Sstevel@tonic-gate
421*0Sstevel@tonic-gate /*
422*0Sstevel@tonic-gate * To retrieve a value, try the various repositories in order.
423*0Sstevel@tonic-gate */
424*0Sstevel@tonic-gate if ((repositories & BI_R_CHOSEN) != 0 &&
425*0Sstevel@tonic-gate (err = bi_getval_chosen(bip, valbufp, vallenp)) != BI_E_NOVAL) {
426*0Sstevel@tonic-gate if (repositoryp != NULL) {
427*0Sstevel@tonic-gate *repositoryp = BI_R_CHOSEN;
428*0Sstevel@tonic-gate }
429*0Sstevel@tonic-gate return (err);
430*0Sstevel@tonic-gate }
431*0Sstevel@tonic-gate if ((repositories & BI_R_DHCPOPT) != 0 &&
432*0Sstevel@tonic-gate (err = bi_getval_dhcpopt(bip, valbufp, vallenp)) != BI_E_NOVAL) {
433*0Sstevel@tonic-gate if (repositoryp != NULL) {
434*0Sstevel@tonic-gate *repositoryp = BI_R_DHCPOPT;
435*0Sstevel@tonic-gate }
436*0Sstevel@tonic-gate return (err);
437*0Sstevel@tonic-gate }
438*0Sstevel@tonic-gate if ((repositories & BI_R_BOOTMISC) != 0 &&
439*0Sstevel@tonic-gate (err = bi_getval_bootmisc(bip, valbufp, vallenp)) != BI_E_NOVAL) {
440*0Sstevel@tonic-gate if (repositoryp != NULL) {
441*0Sstevel@tonic-gate *repositoryp = BI_R_BOOTMISC;
442*0Sstevel@tonic-gate }
443*0Sstevel@tonic-gate return (err);
444*0Sstevel@tonic-gate }
445*0Sstevel@tonic-gate
446*0Sstevel@tonic-gate /*
447*0Sstevel@tonic-gate * No-one has a value for 'name'.
448*0Sstevel@tonic-gate */
449*0Sstevel@tonic-gate return (BI_E_NOVAL);
450*0Sstevel@tonic-gate }
451*0Sstevel@tonic-gate
452*0Sstevel@tonic-gate #if defined(_BOOT)
453*0Sstevel@tonic-gate /*
454*0Sstevel@tonic-gate * bootinfo_put(const char *name, char *valbuf, int vallen,
455*0Sstevel@tonic-gate * int repository);
456*0Sstevel@tonic-gate *
457*0Sstevel@tonic-gate * Create/update a value in the bootinfo repository (standalone only).
458*0Sstevel@tonic-gate *
459*0Sstevel@tonic-gate * Returns:
460*0Sstevel@tonic-gate * 0 => successful, valbuf[0..vallen-1] bytes stored in repository
461*0Sstevel@tonic-gate * >0 => error (BI_E_* codes defined in bootinfo.h)
462*0Sstevel@tonic-gate */
463*0Sstevel@tonic-gate int
bootinfo_put(const char * name,const void * valbuf,size_t vallen,int repository)464*0Sstevel@tonic-gate bootinfo_put(const char *name, const void *valbuf, size_t vallen,
465*0Sstevel@tonic-gate int repository)
466*0Sstevel@tonic-gate {
467*0Sstevel@tonic-gate bi_param_t *bip;
468*0Sstevel@tonic-gate
469*0Sstevel@tonic-gate /*
470*0Sstevel@tonic-gate * Check whether we were successfully initialized.
471*0Sstevel@tonic-gate */
472*0Sstevel@tonic-gate if (bi_nvl == NULL) {
473*0Sstevel@tonic-gate return (BI_E_ERROR);
474*0Sstevel@tonic-gate }
475*0Sstevel@tonic-gate
476*0Sstevel@tonic-gate /*
477*0Sstevel@tonic-gate * Determine which repositories might be accessed; a zero value
478*0Sstevel@tonic-gate * means to (possibly) access them all.
479*0Sstevel@tonic-gate */
480*0Sstevel@tonic-gate if (repository == 0) {
481*0Sstevel@tonic-gate repository = BI_R_ALL;
482*0Sstevel@tonic-gate }
483*0Sstevel@tonic-gate
484*0Sstevel@tonic-gate /*
485*0Sstevel@tonic-gate * Check that we know about this name in the specified repository,
486*0Sstevel@tonic-gate * and that it may be written (note that DHCP options cannot be
487*0Sstevel@tonic-gate * written).
488*0Sstevel@tonic-gate */
489*0Sstevel@tonic-gate if ((bip = bi_find_param(name)) == NULL ||
490*0Sstevel@tonic-gate (repository & bip->bi_repository) == 0) {
491*0Sstevel@tonic-gate return (BI_E_ILLNAME);
492*0Sstevel@tonic-gate }
493*0Sstevel@tonic-gate if ((repository & bip->bi_repository) == BI_R_DHCPOPT) {
494*0Sstevel@tonic-gate return (BI_E_RDONLY);
495*0Sstevel@tonic-gate }
496*0Sstevel@tonic-gate
497*0Sstevel@tonic-gate /*
498*0Sstevel@tonic-gate * To put the value, try the various repositories in order.
499*0Sstevel@tonic-gate */
500*0Sstevel@tonic-gate if ((bip->bi_repository & BI_R_CHOSEN) != 0) {
501*0Sstevel@tonic-gate return (bi_putval_chosen(bip, valbuf, vallen));
502*0Sstevel@tonic-gate }
503*0Sstevel@tonic-gate if ((bip->bi_repository & BI_R_BOOTMISC) != 0) {
504*0Sstevel@tonic-gate return (bi_putval_bootmisc(bip, valbuf, vallen));
505*0Sstevel@tonic-gate }
506*0Sstevel@tonic-gate
507*0Sstevel@tonic-gate return (BI_E_ERROR);
508*0Sstevel@tonic-gate }
509*0Sstevel@tonic-gate #endif /* defined(_BOOT) */
510