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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Darren Kenny <darren.kenny@oracle.com>
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Date: Tue, 8 Dec 2020 21:47:13 +0000
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Subject: [PATCH] loader/bsd: Check for NULL arg up-front
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The code in the next block suggests that it is possible for .set to be
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true but .arg may still be NULL.
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This code assumes that it is never NULL, yet later is testing if it is
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NULL - that is inconsistent.
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So we should check first if .arg is not NULL, and remove this check that
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is being flagged by Coverity since it is no longer required.
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Fixes: CID 292471
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Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/loader/i386/bsd.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/grub-core/loader/i386/bsd.c b/grub-core/loader/i386/bsd.c
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index 45a715099..b5ab848ee 100644
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--- a/grub-core/loader/i386/bsd.c
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+++ b/grub-core/loader/i386/bsd.c
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@@ -1606,7 +1606,7 @@ grub_cmd_openbsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
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kernel_type = KERNEL_TYPE_OPENBSD;
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bootflags = grub_bsd_parse_flags (ctxt->state, openbsd_flags);
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- if (ctxt->state[OPENBSD_ROOT_ARG].set)
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+ if (ctxt->state[OPENBSD_ROOT_ARG].set && ctxt->state[OPENBSD_ROOT_ARG].arg != NULL)
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{
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const char *arg = ctxt->state[OPENBSD_ROOT_ARG].arg;
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unsigned type, unit, part;
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@@ -1623,7 +1623,7 @@ grub_cmd_openbsd (grub_extcmd_context_t ctxt, int argc, char *argv[])
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"unknown disk type name");
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unit = grub_strtoul (arg, (char **) &arg, 10);
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- if (! (arg && *arg >= 'a' && *arg <= 'z'))
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+ if (! (*arg >= 'a' && *arg <= 'z'))
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return grub_error (GRUB_ERR_BAD_ARGUMENT,
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"only device specifications of form "
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"<type><number><lowercase letter> are supported");
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