1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2015, Joyent, Inc.
14 */
15
16 /*
17 * Routines for manipulating property information structures.
18 *
19 * For more information, see the big theory statement in
20 * uts/common/io/overlay/overlay.c
21 */
22
23 #include <sys/overlay_impl.h>
24
25 void
overlay_prop_init(overlay_prop_handle_t phdl)26 overlay_prop_init(overlay_prop_handle_t phdl)
27 {
28 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
29 mac_propval_range_t *rangep = (mac_propval_range_t *)infop->oipi_poss;
30
31 infop->oipi_posssize = sizeof (mac_propval_range_t);
32 bzero(rangep, sizeof (mac_propval_range_t));
33 }
34
35 void
overlay_prop_set_name(overlay_prop_handle_t phdl,const char * name)36 overlay_prop_set_name(overlay_prop_handle_t phdl, const char *name)
37 {
38 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
39 (void) strlcpy(infop->oipi_name, name, OVERLAY_PROP_NAMELEN);
40 }
41
42 void
overlay_prop_set_prot(overlay_prop_handle_t phdl,overlay_prop_prot_t prot)43 overlay_prop_set_prot(overlay_prop_handle_t phdl, overlay_prop_prot_t prot)
44 {
45 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
46 infop->oipi_prot = prot;
47 }
48
49 void
overlay_prop_set_type(overlay_prop_handle_t phdl,overlay_prop_type_t type)50 overlay_prop_set_type(overlay_prop_handle_t phdl, overlay_prop_type_t type)
51 {
52 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
53 infop->oipi_type = type;
54 }
55
56 int
overlay_prop_set_default(overlay_prop_handle_t phdl,void * def,ssize_t len)57 overlay_prop_set_default(overlay_prop_handle_t phdl, void *def, ssize_t len)
58 {
59 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
60
61 if (len > OVERLAY_PROP_SIZEMAX)
62 return (E2BIG);
63
64 if (len < 0)
65 return (EOVERFLOW);
66
67 bcopy(def, infop->oipi_default, len);
68 infop->oipi_defsize = (uint32_t)len;
69
70 return (0);
71 }
72
73 void
overlay_prop_set_nodefault(overlay_prop_handle_t phdl)74 overlay_prop_set_nodefault(overlay_prop_handle_t phdl)
75 {
76 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
77 infop->oipi_default[0] = '\0';
78 infop->oipi_defsize = 0;
79 }
80
81 void
overlay_prop_set_range_uint32(overlay_prop_handle_t phdl,uint32_t min,uint32_t max)82 overlay_prop_set_range_uint32(overlay_prop_handle_t phdl, uint32_t min,
83 uint32_t max)
84 {
85 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
86 mac_propval_range_t *rangep = (mac_propval_range_t *)infop->oipi_poss;
87
88 if (rangep->mpr_count != 0 && rangep->mpr_type != MAC_PROPVAL_UINT32)
89 return;
90
91 if (infop->oipi_posssize + sizeof (mac_propval_uint32_range_t) >
92 sizeof (infop->oipi_poss))
93 return;
94
95 infop->oipi_posssize += sizeof (mac_propval_uint32_range_t);
96 rangep->mpr_count++;
97 rangep->mpr_type = MAC_PROPVAL_UINT32;
98 rangep->u.mpr_uint32[rangep->mpr_count-1].mpur_min = min;
99 rangep->u.mpr_uint32[rangep->mpr_count-1].mpur_max = max;
100 }
101
102 void
overlay_prop_set_range_str(overlay_prop_handle_t phdl,const char * str)103 overlay_prop_set_range_str(overlay_prop_handle_t phdl, const char *str)
104 {
105 size_t len = strlen(str) + 1; /* Account for a null terminator */
106 overlay_ioc_propinfo_t *infop = (overlay_ioc_propinfo_t *)phdl;
107 mac_propval_range_t *rangep = (mac_propval_range_t *)infop->oipi_poss;
108 mac_propval_str_range_t *pstr = &rangep->u.mpr_str;
109
110 if (rangep->mpr_count != 0 && rangep->mpr_type != MAC_PROPVAL_STR)
111 return;
112
113 if (infop->oipi_posssize + len > sizeof (infop->oipi_poss))
114 return;
115
116 rangep->mpr_count++;
117 rangep->mpr_type = MAC_PROPVAL_STR;
118 strlcpy((char *)&pstr->mpur_data[pstr->mpur_nextbyte], str,
119 sizeof (infop->oipi_poss) - infop->oipi_posssize);
120 pstr->mpur_nextbyte += len;
121 infop->oipi_posssize += len;
122 }
123