path: root/Documentation
diff options
authorPaul Bolle <pebolle@tiscali.nl>2008-03-10 16:39:03 +0100
committerRusty Russell <rusty@rustcorp.com.au>2008-03-11 09:35:58 +1100
commit1ef36fa64e65079de18ff5179a51af58e44d49a6 (patch)
tree3c59c9e4ed6327327191e916051c5f088e7478bf /Documentation
parent4357bd9453b81e0a41db1dec16e06d74256b7560 (diff)
lguest: Do not append space to guests kernel command line
The lguest launcher appends a space to the kernel command line (if kernel arguments are specified on its command line). This space is unneeded. More importantly, this appended space will make Red Hat's nash script interpreter (used in a Fedora style initramfs) add an empty argument to init's command line. This empty argument will make kernel arguments like "init=/bin/bash" fail (because the shell will try to execute a script with an empty name). This could be considered a bug in nash, but is easily fixed in the lguest launcher too. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'Documentation')
1 files changed, 5 insertions, 2 deletions
diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c
index 0f23d67f958..bec5a32e409 100644
--- a/Documentation/lguest/lguest.c
+++ b/Documentation/lguest/lguest.c
@@ -486,9 +486,12 @@ static void concat(char *dst, char *args[])
unsigned int i, len = 0;
for (i = 0; args[i]; i++) {
+ if (i) {
+ strcat(dst+len, " ");
+ len++;
+ }
strcpy(dst+len, args[i]);
- strcat(dst+len, " ");
- len += strlen(args[i]) + 1;
+ len += strlen(args[i]);
/* In case it's empty. */
dst[len] = '\0';