mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
|
From f6f895644230b13618f14f7108f9b23a21a87bfa Mon Sep 17 00:00:00 2001
|
||
|
|
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
|
||
|
|
Date: Tue, 12 May 2015 18:46:12 +0200
|
||
|
|
Subject: [PATCH] MIPS: BCM47XX: Simplify function looking for NVRAM entry
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=UTF-8
|
||
|
|
Content-Transfer-Encoding: 8bit
|
||
|
|
|
||
|
|
First of all it shouldn't modify copied NVRAM just to make sure it can
|
||
|
|
loop over all entries. It's enough to just compare current position
|
||
|
|
pointer with the end of buffer address.
|
||
|
|
Secondly buffer is guaranteed to be \0 ended, so we don't need strnchr.
|
||
|
|
|
||
|
|
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
|
||
|
|
Cc: linux-mips@linux-mips.org
|
||
|
|
Cc: Hauke Mehrtens <hauke@hauke-m.de>
|
||
|
|
Cc: Hante Meuleman <meuleman@broadcom.com>
|
||
|
|
Cc: Ian Kent <raven@themaw.net>
|
||
|
|
Patchwork: https://patchwork.linux-mips.org/patch/10032/
|
||
|
|
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
|
||
|
|
---
|
||
|
|
arch/mips/bcm47xx/nvram.c | 13 +++++--------
|
||
|
|
1 file changed, 5 insertions(+), 8 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c
|
||
|
|
index dee1c32..95d028c 100644
|
||
|
|
--- a/arch/mips/bcm47xx/nvram.c
|
||
|
|
+++ b/arch/mips/bcm47xx/nvram.c
|
||
|
|
@@ -171,7 +171,7 @@ static int nvram_init(void)
|
||
|
|
int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
|
||
|
|
{
|
||
|
|
char *var, *value, *end, *eq;
|
||
|
|
- int data_left, err;
|
||
|
|
+ int err;
|
||
|
|
|
||
|
|
if (!name)
|
||
|
|
return -EINVAL;
|
||
|
|
@@ -184,19 +184,16 @@ int bcm47xx_nvram_getenv(const char *name, char *val, size_t val_len)
|
||
|
|
|
||
|
|
/* Look for name=value and return value */
|
||
|
|
var = &nvram_buf[sizeof(struct nvram_header)];
|
||
|
|
- end = nvram_buf + sizeof(nvram_buf) - 2;
|
||
|
|
- end[0] = '\0';
|
||
|
|
- end[1] = '\0';
|
||
|
|
- for (; *var; var = value + strlen(value) + 1) {
|
||
|
|
- data_left = end - var;
|
||
|
|
-
|
||
|
|
- eq = strnchr(var, data_left, '=');
|
||
|
|
+ end = nvram_buf + sizeof(nvram_buf);
|
||
|
|
+ while (var < end && *var) {
|
||
|
|
+ eq = strchr(var, '=');
|
||
|
|
if (!eq)
|
||
|
|
break;
|
||
|
|
value = eq + 1;
|
||
|
|
if (eq - var == strlen(name) &&
|
||
|
|
strncmp(var, name, eq - var) == 0)
|
||
|
|
return snprintf(val, val_len, "%s", value);
|
||
|
|
+ var = value + strlen(value) + 1;
|
||
|
|
}
|
||
|
|
return -ENOENT;
|
||
|
|
}
|
||
|
|
--
|
||
|
|
1.8.4.5
|
||
|
|
|