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nwfilter: utility function virNWFilterVarValueEqual
To detect if an interface's nwfilter has changed, we need to also compare the filterparams, which is a hashtable of virNWFilterVarValue. virHashEqual can do this nicely, but requires a pointer to a function that will compare two of the items being stored in the hashes.
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@ -189,6 +189,37 @@ virNWFilterVarValueGetCardinality(const virNWFilterVarValuePtr val)
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return 0;
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return 0;
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}
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}
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bool
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virNWFilterVarValueEqual(const virNWFilterVarValuePtr a,
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const virNWFilterVarValuePtr b)
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{
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unsigned int card, i, j;
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const char *s;
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if (!a || !b)
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return false;
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card = virNWFilterVarValueGetCardinality(a);
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if (card != virNWFilterVarValueGetCardinality(b))
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return false;
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/* brute force O(n^2) comparison */
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for (i = 0; i < card; i++) {
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bool eq = false;
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s = virNWFilterVarValueGetNthValue(a, i);
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for (j = 0; j < card; j++) {
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if (STREQ_NULLABLE(s, virNWFilterVarValueGetNthValue(b, j))) {
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eq = true;
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break;
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}
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}
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if (!eq)
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return false;
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}
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return true;
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}
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int
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int
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virNWFilterVarValueAddValue(virNWFilterVarValuePtr val, char *value)
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virNWFilterVarValueAddValue(virNWFilterVarValuePtr val, char *value)
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{
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{
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@ -57,6 +57,8 @@ const char *virNWFilterVarValueGetSimple(const virNWFilterVarValuePtr val);
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const char *virNWFilterVarValueGetNthValue(virNWFilterVarValuePtr val,
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const char *virNWFilterVarValueGetNthValue(virNWFilterVarValuePtr val,
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unsigned int idx);
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unsigned int idx);
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unsigned int virNWFilterVarValueGetCardinality(const virNWFilterVarValuePtr);
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unsigned int virNWFilterVarValueGetCardinality(const virNWFilterVarValuePtr);
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bool virNWFilterVarValueEqual(const virNWFilterVarValuePtr a,
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const virNWFilterVarValuePtr b);
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int virNWFilterVarValueAddValue(virNWFilterVarValuePtr val, char *value);
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int virNWFilterVarValueAddValue(virNWFilterVarValuePtr val, char *value);
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int virNWFilterVarValueDelValue(virNWFilterVarValuePtr val, const char *value);
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int virNWFilterVarValueDelValue(virNWFilterVarValuePtr val, const char *value);
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@ -975,6 +975,7 @@ virNWFilterVarValueCopy;
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virNWFilterVarValueCreateSimple;
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virNWFilterVarValueCreateSimple;
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virNWFilterVarValueCreateSimpleCopyValue;
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virNWFilterVarValueCreateSimpleCopyValue;
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virNWFilterVarValueDelValue;
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virNWFilterVarValueDelValue;
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virNWFilterVarValueEqual;
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virNWFilterVarValueFree;
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virNWFilterVarValueFree;
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virNWFilterVarValueGetCardinality;
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virNWFilterVarValueGetCardinality;
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virNWFilterVarValueGetNthValue;
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virNWFilterVarValueGetNthValue;
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