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mirror_zfs/lib/libnvpair/libnvpair.c
Brian Behlendorf c4911ece24 Move library files to lib
2008-12-11 14:16:55 -08:00

619 lines
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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <unistd.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/inttypes.h>
#include "libnvpair.h"
/*
* libnvpair - A tools library for manipulating <name, value> pairs.
*
* This library provides routines packing an unpacking nv pairs
* for transporting data across process boundaries, transporting
* between kernel and userland, and possibly saving onto disk files.
*/
static void
indent(FILE *fp, int depth)
{
while (depth-- > 0)
(void) fprintf(fp, "\t");
}
/*
* nvlist_print - Prints elements in an event buffer
*/
static
void
nvlist_print_with_indent(FILE *fp, nvlist_t *nvl, int depth)
{
int i;
char *name;
uint_t nelem;
nvpair_t *nvp;
if (nvl == NULL)
return;
indent(fp, depth);
(void) fprintf(fp, "nvlist version: %d\n", NVL_VERSION(nvl));
nvp = nvlist_next_nvpair(nvl, NULL);
while (nvp) {
data_type_t type = nvpair_type(nvp);
indent(fp, depth);
name = nvpair_name(nvp);
(void) fprintf(fp, "\t%s =", name);
nelem = 0;
switch (type) {
case DATA_TYPE_BOOLEAN: {
(void) fprintf(fp, " 1");
break;
}
case DATA_TYPE_BOOLEAN_VALUE: {
boolean_t val;
(void) nvpair_value_boolean_value(nvp, &val);
(void) fprintf(fp, " %d", val);
break;
}
case DATA_TYPE_BYTE: {
uchar_t val;
(void) nvpair_value_byte(nvp, &val);
(void) fprintf(fp, " 0x%2.2x", val);
break;
}
case DATA_TYPE_INT8: {
int8_t val;
(void) nvpair_value_int8(nvp, &val);
(void) fprintf(fp, " %d", val);
break;
}
case DATA_TYPE_UINT8: {
uint8_t val;
(void) nvpair_value_uint8(nvp, &val);
(void) fprintf(fp, " 0x%x", val);
break;
}
case DATA_TYPE_INT16: {
int16_t val;
(void) nvpair_value_int16(nvp, &val);
(void) fprintf(fp, " %d", val);
break;
}
case DATA_TYPE_UINT16: {
uint16_t val;
(void) nvpair_value_uint16(nvp, &val);
(void) fprintf(fp, " 0x%x", val);
break;
}
case DATA_TYPE_INT32: {
int32_t val;
(void) nvpair_value_int32(nvp, &val);
(void) fprintf(fp, " %d", val);
break;
}
case DATA_TYPE_UINT32: {
uint32_t val;
(void) nvpair_value_uint32(nvp, &val);
(void) fprintf(fp, " 0x%x", val);
break;
}
case DATA_TYPE_INT64: {
int64_t val;
(void) nvpair_value_int64(nvp, &val);
(void) fprintf(fp, " %lld", (longlong_t)val);
break;
}
case DATA_TYPE_UINT64: {
uint64_t val;
(void) nvpair_value_uint64(nvp, &val);
(void) fprintf(fp, " 0x%llx", (u_longlong_t)val);
break;
}
case DATA_TYPE_DOUBLE: {
double val;
(void) nvpair_value_double(nvp, &val);
(void) fprintf(fp, " 0x%llf", val);
break;
}
case DATA_TYPE_STRING: {
char *val;
(void) nvpair_value_string(nvp, &val);
(void) fprintf(fp, " %s", val);
break;
}
case DATA_TYPE_BOOLEAN_ARRAY: {
boolean_t *val;
(void) nvpair_value_boolean_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %d", val[i]);
break;
}
case DATA_TYPE_BYTE_ARRAY: {
uchar_t *val;
(void) nvpair_value_byte_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " 0x%2.2x", val[i]);
break;
}
case DATA_TYPE_INT8_ARRAY: {
int8_t *val;
(void) nvpair_value_int8_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %d", val[i]);
break;
}
case DATA_TYPE_UINT8_ARRAY: {
uint8_t *val;
(void) nvpair_value_uint8_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " 0x%x", val[i]);
break;
}
case DATA_TYPE_INT16_ARRAY: {
int16_t *val;
(void) nvpair_value_int16_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %d", val[i]);
break;
}
case DATA_TYPE_UINT16_ARRAY: {
uint16_t *val;
(void) nvpair_value_uint16_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " 0x%x", val[i]);
break;
}
case DATA_TYPE_INT32_ARRAY: {
int32_t *val;
(void) nvpair_value_int32_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %d", val[i]);
break;
}
case DATA_TYPE_UINT32_ARRAY: {
uint32_t *val;
(void) nvpair_value_uint32_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " 0x%x", val[i]);
break;
}
case DATA_TYPE_INT64_ARRAY: {
int64_t *val;
(void) nvpair_value_int64_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %lld", (longlong_t)val[i]);
break;
}
case DATA_TYPE_UINT64_ARRAY: {
uint64_t *val;
(void) nvpair_value_uint64_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " 0x%llx",
(u_longlong_t)val[i]);
break;
}
case DATA_TYPE_STRING_ARRAY: {
char **val;
(void) nvpair_value_string_array(nvp, &val, &nelem);
for (i = 0; i < nelem; i++)
(void) fprintf(fp, " %s", val[i]);
break;
}
case DATA_TYPE_HRTIME: {
hrtime_t val;
(void) nvpair_value_hrtime(nvp, &val);
(void) fprintf(fp, " 0x%llx", val);
break;
}
case DATA_TYPE_NVLIST: {
nvlist_t *val;
(void) nvpair_value_nvlist(nvp, &val);
(void) fprintf(fp, " (embedded nvlist)\n");
nvlist_print_with_indent(fp, val, depth + 1);
indent(fp, depth + 1);
(void) fprintf(fp, "(end %s)\n", name);
break;
}
case DATA_TYPE_NVLIST_ARRAY: {
nvlist_t **val;
(void) nvpair_value_nvlist_array(nvp, &val, &nelem);
(void) fprintf(fp, " (array of embedded nvlists)\n");
for (i = 0; i < nelem; i++) {
indent(fp, depth + 1);
(void) fprintf(fp,
"(start %s[%d])\n", name, i);
nvlist_print_with_indent(fp, val[i], depth + 1);
indent(fp, depth + 1);
(void) fprintf(fp, "(end %s[%d])\n", name, i);
}
break;
}
default:
(void) fprintf(fp, " unknown data type (%d)", type);
break;
}
(void) fprintf(fp, "\n");
nvp = nvlist_next_nvpair(nvl, nvp);
}
}
void
nvlist_print(FILE *fp, nvlist_t *nvl)
{
nvlist_print_with_indent(fp, nvl, 0);
}
/*
* Determine if string 'value' matches 'nvp' value. The 'value' string is
* converted, depending on the type of 'nvp', prior to match. For numeric
* types, a radix independent sscanf conversion of 'value' is used. If 'nvp'
* is an array type, 'ai' is the index into the array against which we are
* checking for match. If nvp is of DATA_TYPE_STRING*, the caller can pass
* in a regex_t compilation of value in 'value_regex' to trigger regular
* expression string match instead of simple strcmp().
*
* Return 1 on match, 0 on no-match, and -1 on error. If the error is
* related to value syntax error and 'ep' is non-NULL, *ep will point into
* the 'value' string at the location where the error exists.
*
* NOTE: It may be possible to move the non-regex_t version of this into
* common code used by library/kernel/boot.
*/
int
nvpair_value_match_regex(nvpair_t *nvp, int ai,
char *value, regex_t *value_regex, char **ep)
{
char *evalue;
uint_t a_len;
int sr;
if (ep)
*ep = NULL;
if ((nvp == NULL) || (value == NULL))
return (-1); /* error fail match - invalid args */
/* make sure array and index combination make sense */
if ((nvpair_type_is_array(nvp) && (ai < 0)) ||
(!nvpair_type_is_array(nvp) && (ai >= 0)))
return (-1); /* error fail match - bad index */
/* non-string values should be single 'chunk' */
if ((nvpair_type(nvp) != DATA_TYPE_STRING) &&
(nvpair_type(nvp) != DATA_TYPE_STRING_ARRAY)) {
value += strspn(value, " \t");
evalue = value + strcspn(value, " \t");
if (*evalue) {
if (ep)
*ep = evalue;
return (-1); /* error fail match - syntax */
}
}
sr = EOF;
switch (nvpair_type(nvp)) {
case DATA_TYPE_STRING: {
char *val;
/* check string value for match */
if (nvpair_value_string(nvp, &val) == 0) {
if (value_regex) {
if (regexec(value_regex, val,
(size_t)0, NULL, 0) == 0)
return (1); /* match */
} else {
if (strcmp(value, val) == 0)
return (1); /* match */
}
}
break;
}
case DATA_TYPE_STRING_ARRAY: {
char **val_array;
/* check indexed string value of array for match */
if ((nvpair_value_string_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len)) {
if (value_regex) {
if (regexec(value_regex, val_array[ai],
(size_t)0, NULL, 0) == 0)
return (1);
} else {
if (strcmp(value, val_array[ai]) == 0)
return (1);
}
}
break;
}
case DATA_TYPE_BYTE: {
uchar_t val, val_arg;
/* scanf uchar_t from value and check for match */
sr = sscanf(value, "%c", &val_arg);
if ((sr == 1) && (nvpair_value_byte(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_BYTE_ARRAY: {
uchar_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%c", &val_arg);
if ((sr == 1) &&
(nvpair_value_byte_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_INT8: {
int8_t val, val_arg;
/* scanf int8_t from value and check for match */
sr = sscanf(value, "%"SCNi8, &val_arg);
if ((sr == 1) &&
(nvpair_value_int8(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_INT8_ARRAY: {
int8_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi8, &val_arg);
if ((sr == 1) &&
(nvpair_value_int8_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT8: {
uint8_t val, val_arg;
/* scanf uint8_t from value and check for match */
sr = sscanf(value, "%"SCNi8, (int8_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint8(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT8_ARRAY: {
uint8_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi8, (int8_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint8_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_INT16: {
int16_t val, val_arg;
/* scanf int16_t from value and check for match */
sr = sscanf(value, "%"SCNi16, &val_arg);
if ((sr == 1) &&
(nvpair_value_int16(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_INT16_ARRAY: {
int16_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi16, &val_arg);
if ((sr == 1) &&
(nvpair_value_int16_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT16: {
uint16_t val, val_arg;
/* scanf uint16_t from value and check for match */
sr = sscanf(value, "%"SCNi16, (int16_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint16(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT16_ARRAY: {
uint16_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi16, (int16_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint16_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_INT32: {
int32_t val, val_arg;
/* scanf int32_t from value and check for match */
sr = sscanf(value, "%"SCNi32, &val_arg);
if ((sr == 1) &&
(nvpair_value_int32(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_INT32_ARRAY: {
int32_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi32, &val_arg);
if ((sr == 1) &&
(nvpair_value_int32_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT32: {
uint32_t val, val_arg;
/* scanf uint32_t from value and check for match */
sr = sscanf(value, "%"SCNi32, (int32_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint32(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT32_ARRAY: {
uint32_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi32, (int32_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint32_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_INT64: {
int64_t val, val_arg;
/* scanf int64_t from value and check for match */
sr = sscanf(value, "%"SCNi64, &val_arg);
if ((sr == 1) &&
(nvpair_value_int64(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_INT64_ARRAY: {
int64_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi64, &val_arg);
if ((sr == 1) &&
(nvpair_value_int64_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT64: {
uint64_t val_arg, val;
/* scanf uint64_t from value and check for match */
sr = sscanf(value, "%"SCNi64, (int64_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint64(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_UINT64_ARRAY: {
uint64_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi64, (int64_t *)&val_arg);
if ((sr == 1) &&
(nvpair_value_uint64_array(nvp, &val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_BOOLEAN_VALUE: {
boolean_t val, val_arg;
/* scanf boolean_t from value and check for match */
sr = sscanf(value, "%"SCNi32, &val_arg);
if ((sr == 1) &&
(nvpair_value_boolean_value(nvp, &val) == 0) &&
(val == val_arg))
return (1);
break;
}
case DATA_TYPE_BOOLEAN_ARRAY: {
boolean_t *val_array, val_arg;
/* check indexed value of array for match */
sr = sscanf(value, "%"SCNi32, &val_arg);
if ((sr == 1) &&
(nvpair_value_boolean_array(nvp,
&val_array, &a_len) == 0) &&
(ai < a_len) &&
(val_array[ai] == val_arg))
return (1);
break;
}
case DATA_TYPE_HRTIME:
case DATA_TYPE_NVLIST:
case DATA_TYPE_NVLIST_ARRAY:
case DATA_TYPE_BOOLEAN:
case DATA_TYPE_DOUBLE:
case DATA_TYPE_UNKNOWN:
default:
/*
* unknown/unsupported data type
*/
return (-1); /* error fail match */
}
/*
* check to see if sscanf failed conversion, return approximate
* pointer to problem
*/
if (sr != 1) {
if (ep)
*ep = value;
return (-1); /* error fail match - syntax */
}
return (0); /* fail match */
}
int
nvpair_value_match(nvpair_t *nvp, int ai, char *value, char **ep)
{
return (nvpair_value_match_regex(nvp, ai, value, NULL, ep));
}
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