summaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
authorPeter Oberparleiter <oberpar@linux.vnet.ibm.com>2009-07-06 17:11:22 +0200
committerRusty Russell <rusty@rustcorp.com.au>2009-09-25 00:32:58 +0930
commit26d052bfce799ef0e7262695b46e3525ca4d381d (patch)
tree4244565b8a687f52fa2b7375cc8435fd1bb41e98 /kernel
parent554bdfe5acf3715e87c8d5e25a4f9a896ac9f014 (diff)
downloadlwn-26d052bfce799ef0e7262695b46e3525ca4d381d.tar.gz
lwn-26d052bfce799ef0e7262695b46e3525ca4d381d.zip
param: allow whitespace as kernel parameter separator
Some boot mechanisms require that kernel parameters are stored in a separate file which is loaded to memory without further processing (e.g. the "Load from FTP" method on s390). When such a file contains newline characters, the kernel parameter preceding the newline might not be correctly parsed (due to the newline being stuck to the end of the actual parameter value) which can lead to boot failures. This patch improves kernel command line usability in such a situation by allowing generic whitespace characters as separators between kernel parameters. Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/params.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/params.c b/kernel/params.c
index 7f6912ced2ba..9da58eabdcb2 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -23,6 +23,7 @@
#include <linux/device.h>
#include <linux/err.h>
#include <linux/slab.h>
+#include <linux/ctype.h>
#if 0
#define DEBUGP printk
@@ -87,7 +88,7 @@ static char *next_arg(char *args, char **param, char **val)
}
for (i = 0; args[i]; i++) {
- if (args[i] == ' ' && !in_quote)
+ if (isspace(args[i]) && !in_quote)
break;
if (equals == 0) {
if (args[i] == '=')
@@ -121,7 +122,7 @@ static char *next_arg(char *args, char **param, char **val)
next = args + i;
/* Chew up trailing spaces. */
- while (*next == ' ')
+ while (isspace(*next))
next++;
return next;
}
@@ -138,7 +139,7 @@ int parse_args(const char *name,
DEBUGP("Parsing ARGS: %s\n", args);
/* Chew leading spaces */
- while (*args == ' ')
+ while (isspace(*args))
args++;
while (*args) {