forked from Telodendria/Telodendria
Lock database in DbExists() to prevent race conditions.
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1 changed files with 14 additions and 1 deletions
15
src/Db.c
15
src/Db.c
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@ -736,10 +736,23 @@ DbExists(Db * db, size_t nArgs,...)
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args = ArrayFromVarArgs(nArgs, ap);
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va_end(ap);
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file = DbFileName(db, args);
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if (!args)
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{
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return 0;
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}
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/*
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* Though it's not explicitly required, we lock the
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* database before checking that an object exists to
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* prevent any potential race conditions.
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*/
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pthread_mutex_lock(&db->lock);
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file = DbFileName(db, args);
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ret = UtilLastModified(file);
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pthread_mutex_unlock(&db->lock);
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Free(file);
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ArrayFree(args);
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