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libpv: add copied parameter to pv_gbytes_memcpy and adapt pvattest

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It's often useful to know how much data was actually copied, therefore let's
introduce an nullable parameter `@copied` to `pv_gbytes_memcpy`.

Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Marc Hartmayer
2022-09-29 08:15:44 +00:00
committed by Jan Höppner
parent d69b9fab4a
commit 330ddb7adb
5 changed files with 18 additions and 13 deletions
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libpv/glib-helper.c
+3 -1
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@@ -168,12 +168,14 @@ GBytes *pv_file_get_content_as_secure_bytes(const char *filename)
return pv_sec_gbytes_new_take(g_steal_pointer(&data), data_size);
}
void *pv_gbytes_memcpy(void *dst, size_t dst_size, GBytes *src)
void *pv_gbytes_memcpy(void *dst, size_t dst_size, GBytes *src, size_t *copied)
{
size_t src_size;
const void *src_data = g_bytes_get_data(src, &src_size);
if (dst_size < src_size)
return NULL;
if (copied)
*copied = src_size;
return memcpy(dst, src_data, src_size);
}