xref: /illumos-gate/usr/src/cmd/fm/fminject/common/inj_string.c (revision 2a8bcb4efb45d99ac41c94a75c396b362c414f7f)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <string.h>
28 #include <limits.h>
29 #include <stdlib.h>
30 #include <sys/types.h>
31 
32 #include <inj.h>
33 #include <inj_err.h>
34 #include <inj_string.h>
35 
36 char *
inj_strdup(const char * s)37 inj_strdup(const char *s)
38 {
39 	char *s1 = inj_alloc(strlen(s) + 1);
40 
41 	(void) strcpy(s1, s);
42 	return (s1);
43 }
44 
45 char *
inj_strndup(const char * s,size_t n)46 inj_strndup(const char *s, size_t n)
47 {
48 	char *s2 = inj_alloc(n + 1);
49 
50 	(void) strncpy(s2, s, n + 1);
51 	s2[n] = '\0';
52 	return (s2);
53 }
54 
55 void
inj_strfree(const char * s)56 inj_strfree(const char *s)
57 {
58 	inj_free((void *)s, strlen(s) + 1);
59 }
60 
61 typedef struct type_desc {
62 	int64_t td_min;
63 	uint64_t td_max;
64 } type_desc_t;
65 
66 static const type_desc_t signed_types[] = {
67 	{ 0, 0 },
68 	{ INT8_MIN, INT8_MAX },
69 	{ INT16_MIN, INT16_MAX },
70 	{ 0, 0 },
71 	{ INT32_MIN, INT32_MAX },
72 	{ 0, 0 },
73 	{ 0, 0 },
74 	{ 0, 0 },
75 	{ INT64_MIN, INT64_MAX }
76 };
77 
78 static const type_desc_t unsigned_types[] = {
79 	{ 0, 0 },
80 	{ 0, UINT8_MAX },
81 	{ 0, UINT16_MAX },
82 	{ 0, 0 },
83 	{ 0, UINT32_MAX },
84 	{ 0, 0 },
85 	{ 0, 0 },
86 	{ 0, 0 },
87 	{ 0, UINT64_MAX }
88 };
89 
90 int
inj_strtoll(const char * str,int width,longlong_t * valp)91 inj_strtoll(const char *str, int width, longlong_t *valp)
92 {
93 	const type_desc_t *desc;
94 	longlong_t val;
95 	char *c;
96 
97 	if (width != 0) {
98 		assert(width / 8 < (sizeof (signed_types) /
99 		    sizeof (signed_types[0])));
100 		desc = &signed_types[width / 8];
101 		assert(desc->td_max != 0);
102 	}
103 
104 	errno = 0;
105 	val = strtoll(str, &c, 0);
106 	if (*c != '\0' || errno == EINVAL)
107 		return (inj_set_errno(EINVAL));
108 
109 	if (errno == ERANGE || (width != 0 && (val < desc->td_min ||
110 	    val > (longlong_t)desc->td_max)))
111 		return (inj_set_errno(ERANGE));
112 
113 	if (valp != NULL)
114 		*valp = val;
115 
116 	return (0);
117 }
118 
119 int
inj_strtoull(const char * str,int width,u_longlong_t * valp)120 inj_strtoull(const char *str, int width, u_longlong_t *valp)
121 {
122 	const type_desc_t *desc;
123 	u_longlong_t val;
124 	char *c;
125 
126 	if (width != 0) {
127 		assert(width / 8 < (sizeof (unsigned_types) /
128 		    sizeof (unsigned_types[0])));
129 		desc = &unsigned_types[width / 8];
130 		assert(desc->td_max != 0);
131 	}
132 
133 	errno = 0;
134 	val = strtoull(str, &c, 0);
135 	if (*c != '\0' || errno == EINVAL)
136 		return (inj_set_errno(EINVAL));
137 
138 	if (errno == ERANGE || (width != 0 && val > desc->td_max))
139 		return (inj_set_errno(ERANGE));
140 
141 	if (valp != NULL)
142 		*valp = val;
143 
144 	return (0);
145 }
146 
147 int
inj_strtime(hrtime_t * nsp,const char * units)148 inj_strtime(hrtime_t *nsp, const char *units)
149 {
150 	static const struct {
151 		const char *name;
152 		hrtime_t mul;
153 	} suffix[] = {
154 		{ "ns", 	NANOSEC / NANOSEC },
155 		{ "nsec",	NANOSEC / NANOSEC },
156 		{ "us",		NANOSEC / MICROSEC },
157 		{ "usec",	NANOSEC / MICROSEC },
158 		{ "ms",		NANOSEC / MILLISEC },
159 		{ "msec",	NANOSEC / MILLISEC },
160 		{ "s",		NANOSEC / SEC },
161 		{ "sec",	NANOSEC / SEC },
162 		{ "m",		NANOSEC * (hrtime_t)60 },
163 		{ "min",	NANOSEC * (hrtime_t)60 },
164 		{ "h",		NANOSEC * (hrtime_t)(60 * 60) },
165 		{ "hour",	NANOSEC * (hrtime_t)(60 * 60) },
166 		{ "d",		NANOSEC * (hrtime_t)(24 * 60 * 60) },
167 		{ "day",	NANOSEC * (hrtime_t)(24 * 60 * 60) },
168 		{ "hz",		0 },
169 		{ NULL }
170 	};
171 
172 	hrtime_t val = *nsp, mul = 1;
173 	int i;
174 
175 	for (i = 0; suffix[i].name != NULL; i++) {
176 		if (strcasecmp(suffix[i].name, units) == 0) {
177 			mul = suffix[i].mul;
178 			break;
179 		}
180 	}
181 
182 	if (suffix[i].name == NULL && *units != '\0')
183 		return (inj_set_errno(EINVAL));
184 
185 	if (mul == 0) {
186 		if (val != 0)
187 			val = NANOSEC / val; /* compute val as value per sec */
188 	} else
189 		val *= mul;
190 
191 	*nsp = val;
192 	return (0);
193 }
194 
195 static ulong_t
inj_hashfn_string(void * key)196 inj_hashfn_string(void *key)
197 {
198 	size_t g, h = 0;
199 	char *p;
200 
201 	assert(key != NULL);
202 
203 	for (p = key; *p != '\0'; p++) {
204 		h = (h << 4) + *p;
205 
206 		if ((g = (h & 0xf0000000)) != 0) {
207 			h ^= (g >> 24);
208 			h ^= g;
209 		}
210 	}
211 
212 	return (h);
213 }
214 
215 static int
inj_hashcmp_string(void * k1,void * k2)216 inj_hashcmp_string(void *k1, void *k2)
217 {
218 	return (strcmp(k1, k2));
219 }
220 
221 /*ARGSUSED*/
222 static void
inj_hashfree_string(inj_var_t * v,void * arg)223 inj_hashfree_string(inj_var_t *v, void *arg)
224 {
225 	inj_strfree(inj_hash_get_key(v));
226 }
227 
228 void
inj_strhash_create(inj_hash_t * h)229 inj_strhash_create(inj_hash_t *h)
230 {
231 	inj_hash_create(h, inj_hashfn_string, inj_hashcmp_string);
232 }
233 
234 int
inj_strhash_insert(inj_hash_t * h,const char * str,uintmax_t value)235 inj_strhash_insert(inj_hash_t *h, const char *str, uintmax_t value)
236 {
237 	return (inj_hash_insert(h, (void *)inj_strdup(str), value));
238 }
239 
240 inj_var_t *
inj_strhash_lookup(inj_hash_t * h,const char * str)241 inj_strhash_lookup(inj_hash_t *h, const char *str)
242 {
243 	return (inj_hash_lookup(h, (void *)str));
244 }
245 
246 void
inj_strhash_destroy(inj_hash_t * h)247 inj_strhash_destroy(inj_hash_t *h)
248 {
249 	inj_hash_destroy(h, inj_hashfree_string, NULL);
250 }
251