From: "Marek Behún" <kabel@kernel.org>
To: Simon Glass <sjg@chromium.org>, Tom Rini <trini@konsulko.com>
Cc: "U-Boot Mailing List" <u-boot@lists.denx.de>,
"Marek Behún" <marek.behun@nic.cz>
Subject: [PATCH 04/10] env: Don't match empty variable name in env_match()
Date: Tue, 12 Oct 2021 13:04:55 +0200 [thread overview]
Message-ID: <20211012110501.6118-5-kabel@kernel.org> (raw)
In-Reply-To: <20211012110501.6118-1-kabel@kernel.org>
From: Marek Behún <marek.behun@nic.cz>
Do we really allow zero-length variable name? I guess not.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
---
cmd/nvedit.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/cmd/nvedit.c b/cmd/nvedit.c
index 742e0924af..e2e8a38b5d 100644
--- a/cmd/nvedit.c
+++ b/cmd/nvedit.c
@@ -708,7 +708,7 @@ char *from_env(const char *envvar)
static int env_match(uchar *s1, int i2)
{
- if (s1 == NULL)
+ if (s1 == NULL || *s1 == '\0')
return -1;
while (*s1 == env_get_char(i2++))
--
2.32.0
next prev parent reply other threads:[~2021-10-12 11:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 11:04 [PATCH 00/10] env_get_char() removal and env_get_f() refactor Marek Behún
2021-10-12 11:04 ` [PATCH 01/10] env: Drop env_get_char_spec() and old, unused .get_char() implementations Marek Behún
2021-10-12 11:04 ` [PATCH 02/10] examples: api: glue: Remove comment that does not apply anymore Marek Behún
2021-10-12 11:04 ` [PATCH 03/10] env: Change env_match() to static and remove from header Marek Behún
2021-10-12 11:04 ` Marek Behún [this message]
2021-10-12 11:04 ` [PATCH 05/10] env: Check for terminating null-byte in env_match() Marek Behún
2021-10-13 15:35 ` Marek Behún
2021-10-12 11:04 ` [PATCH 06/10] env: Inline env_get_char() into it's only user Marek Behún
2021-10-12 11:04 ` [PATCH 07/10] env: Early return from env_get_f() on NULL name Marek Behún
2021-10-12 11:04 ` [PATCH 08/10] env: Use strncpy() instead of ad-hoc code to copy variable value Marek Behún
2021-10-12 11:41 ` Rasmus Villemoes
2021-10-12 12:00 ` Marek Behún
2021-10-12 12:45 ` Rasmus Villemoes
2021-10-12 11:05 ` [PATCH 09/10] env: Use string pointer instead of indexes in env_get_f() Marek Behún
2021-10-12 11:05 ` [PATCH 10/10] env: Move non-cmd specific env functions to env/common.c Marek Behún
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