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libreboot-utils: safe memcmp

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Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-29 22:15:27 +01:00
parent 01aa95ec15
commit 7fb0b2f692
5 changed files with 38 additions and 4 deletions
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util/libreboot-utils/lib/io.c
+2 -2
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@@ -143,7 +143,7 @@ read_file(void)
if (_r < 0)
err_exit(errno, "%s: read failed (cmp)", f->tname);
if (memcmp(f->buf, f->bufcmp, f->gbe_file_size) != 0)
if (vcmp(f->buf, f->bufcmp, f->gbe_file_size) != 0)
err_exit(errno, "%s: %s: read contents differ (pre-test)",
f->fname, f->tname);
}
@@ -329,7 +329,7 @@ check_written_part(size_t p)
f->rw_check_err_read[p] = f->io_err_gbe = 1;
else if ((size_t)rval != gbe_rw_size)
f->rw_check_partial_read[p] = f->io_err_gbe = 1;
else if (memcmp(mem_offset, f->pad, gbe_rw_size) != 0)
else if (vcmp(mem_offset, f->pad, gbe_rw_size) != 0)
f->rw_check_bad_part[p] = f->io_err_gbe = 1;
if (f->rw_check_err_read[p] ||