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lib: Add memdup()

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Add a function to duplicate a memory region, a little like strdup().

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2021-09-25 07:03:06 -06:00
committed by Tom Rini
parent 0caf37e973
commit 930c887e0f
3 changed files with 58 additions and 0 deletions
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32
test/lib/string.c
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@@ -23,6 +23,8 @@
/* Allow for copying up to 32 bytes */
#define BUFLEN (SWEEP + 33)
#define TEST_STR "hello"
/**
* init_buffer() - initialize buffer
*
@@ -193,3 +195,33 @@ static int lib_memmove(struct unit_test_state *uts)
}
LIB_TEST(lib_memmove, 0);
/** lib_memdup() - unit test for memdup() */
static int lib_memdup(struct unit_test_state *uts)
{
char buf[BUFLEN];
size_t len;
char *p, *q;
/* Zero size should do nothing */
p = memdup(NULL, 0);
ut_assertnonnull(p);
free(p);
p = memdup(buf, 0);
ut_assertnonnull(p);
free(p);
strcpy(buf, TEST_STR);
len = sizeof(TEST_STR);
p = memdup(buf, len);
ut_asserteq_mem(p, buf, len);
q = memdup(p, len);
ut_asserteq_mem(q, buf, len);
free(q);
free(p);
return 0;
}
LIB_TEST(lib_memdup, 0);