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* Path hashing.

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This commit is contained in:
Eelco Dolstra 2003-06-16 15:59:23 +00:00
parent a09e66da5a
commit 2f04e7102e
5 changed files with 178 additions and 8 deletions
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6
src/values.cc
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@ -19,7 +19,7 @@ static string absValuePath(string s)
Hash addValue(string path)
{
Hash hash = hashFile(path);
Hash hash = hashPath(path);
string name;
if (queryDB(nixDB, dbRefs, hash, name)) {
@ -72,8 +72,8 @@ string queryValuePath(Hash hash)
if (queryDB(nixDB, dbRefs, hash, name)) {
string fn = absValuePath(name);
/* Verify that the file hasn't changed. !!! race */
if (hashFile(fn) != hash)
/* Verify that the file hasn't changed. !!! race !!! slow */
if (hashPath(fn) != hash)
throw Error("file " + fn + " is stale");
return fn;