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47 lines
1.7 KiB
47 lines
1.7 KiB
6 months ago
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From 47fd30b95f506beaef5640ad61b40b180c7ac47b Mon Sep 17 00:00:00 2001
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From: Daan De Meyer <daan.j.demeyer@gmail.com>
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Date: Wed, 22 Feb 2023 17:04:58 +0100
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Subject: [PATCH] vmm: Modernize get_smbios_table()
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(cherry picked from commit c8e5d82c97a1478b15d2f97ffebd9591e81663ba)
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Related: RHEL-16952
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---
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src/boot/efi/vmm.c | 18 +++++++-----------
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1 file changed, 7 insertions(+), 11 deletions(-)
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diff --git a/src/boot/efi/vmm.c b/src/boot/efi/vmm.c
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index 19b66a3974..f9a59dca0a 100644
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--- a/src/boot/efi/vmm.c
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+++ b/src/boot/efi/vmm.c
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@@ -258,22 +258,18 @@ static const SmbiosHeader *get_smbios_table(uint8_t type, uint64_t *ret_size_lef
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/* Skip over string table. */
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for (;;) {
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- while (size > 0 && *p != '\0') {
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- p++;
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- size--;
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- }
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- if (size == 0)
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+ const uint8_t *e = memchr(p, 0, size);
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+ if (!e)
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return NULL;
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- p++;
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- size--;
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- /* Double NUL terminates string table. */
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- if (*p == '\0') {
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- if (size == 0)
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- return NULL;
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+ if (e == p) {/* Double NUL byte means we've reached the end of the string table. */
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p++;
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+ size--;
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break;
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}
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+
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+ size -= e + 1 - p;
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+ p = e + 1;
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}
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}
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