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96434a76fd
At present this function returns 1 on success and 0 on failure. But in the latter case it provides no indication of what went wrong. If an attempt is made to delete a non-existent variable, the caller may want to ignore this error. This happens when setting a non-existent variable to "", for example. Update the function to return 0 on success and a useful error code on failure. Add a function comment too. Make sure that env_set() does not return an error if it is deleting a variable that doesn't exist. We could update env_set() to return useful error numbers also, but that is beyond the scope of this change. Signed-off-by: Simon Glass <sjg@chromium.org> wip
126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2019
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* Roman Kapl, SYSGO, rka@sysgo.com
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*/
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#include <common.h>
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#include <command.h>
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#include <log.h>
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#include <search.h>
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#include <stdio.h>
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#include <test/env.h>
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#include <test/ut.h>
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#define SIZE 32
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#define ITERATIONS 10000
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static int htab_fill(struct unit_test_state *uts,
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struct hsearch_data *htab, size_t size)
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{
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size_t i;
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struct env_entry item;
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struct env_entry *ritem;
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char key[20];
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for (i = 0; i < size; i++) {
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sprintf(key, "%d", (int)i);
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item.callback = NULL;
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item.data = key;
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item.flags = 0;
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item.key = key;
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ut_asserteq(1, hsearch_r(item, ENV_ENTER, &ritem, htab, 0));
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}
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return 0;
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}
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static int htab_check_fill(struct unit_test_state *uts,
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struct hsearch_data *htab, size_t size)
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{
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size_t i;
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struct env_entry item;
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struct env_entry *ritem;
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char key[20];
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for (i = 0; i < size; i++) {
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sprintf(key, "%d", (int)i);
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item.callback = NULL;
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item.flags = 0;
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item.data = key;
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item.key = key;
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hsearch_r(item, ENV_FIND, &ritem, htab, 0);
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ut_assert(ritem);
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ut_asserteq_str(key, ritem->key);
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ut_asserteq_str(key, ritem->data);
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}
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return 0;
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}
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static int htab_create_delete(struct unit_test_state *uts,
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struct hsearch_data *htab, size_t iterations)
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{
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size_t i;
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struct env_entry item;
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struct env_entry *ritem;
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char key[20];
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for (i = 0; i < iterations; i++) {
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sprintf(key, "cd-%d", (int)i);
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item.callback = NULL;
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item.flags = 0;
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item.data = key;
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item.key = key;
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hsearch_r(item, ENV_ENTER, &ritem, htab, 0);
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ritem = NULL;
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hsearch_r(item, ENV_FIND, &ritem, htab, 0);
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ut_assert(ritem);
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ut_asserteq_str(key, ritem->key);
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ut_asserteq_str(key, ritem->data);
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ut_asserteq(0, hdelete_r(key, htab, 0));
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}
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return 0;
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}
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/* Completely fill up the hash table */
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static int env_test_htab_fill(struct unit_test_state *uts)
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{
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struct hsearch_data htab;
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memset(&htab, 0, sizeof(htab));
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ut_asserteq(1, hcreate_r(SIZE, &htab));
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ut_assertok(htab_fill(uts, &htab, SIZE));
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ut_assertok(htab_check_fill(uts, &htab, SIZE));
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ut_asserteq(SIZE, htab.filled);
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hdestroy_r(&htab);
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return 0;
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}
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ENV_TEST(env_test_htab_fill, 0);
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/* Fill the hashtable up halfway an repeateadly delete/create elements
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* and check for corruption
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*/
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static int env_test_htab_deletes(struct unit_test_state *uts)
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{
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struct hsearch_data htab;
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memset(&htab, 0, sizeof(htab));
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ut_asserteq(1, hcreate_r(SIZE, &htab));
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ut_assertok(htab_fill(uts, &htab, SIZE / 2));
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ut_assertok(htab_create_delete(uts, &htab, ITERATIONS));
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ut_assertok(htab_check_fill(uts, &htab, SIZE / 2));
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ut_asserteq(SIZE / 2, htab.filled);
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hdestroy_r(&htab);
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return 0;
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}
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ENV_TEST(env_test_htab_deletes, 0);
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