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authorImre Kaloz <kaloz@openwrt.org>2015-04-12 14:46:19 +0000
committerImre Kaloz <kaloz@openwrt.org>2015-04-12 14:46:19 +0000
commit6cfe1539da954a69ed41c6e8d424a34406285ac3 (patch)
tree03700fda01d9410111c85392d76b908593be958a /target/linux/generic/patches-3.18/995-mangle_bootargs.patch
parent95ef64a7792801135740073208b3e31322f948c8 (diff)
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generic: make sure we only try to mangle bootargs we do have
Signed-off-by: Imre Kaloz <kaloz@openwrt.org> SVN-Revision: 45393
Diffstat (limited to 'target/linux/generic/patches-3.18/995-mangle_bootargs.patch')
-rw-r--r--target/linux/generic/patches-3.18/995-mangle_bootargs.patch21
1 files changed, 12 insertions, 9 deletions
diff --git a/target/linux/generic/patches-3.18/995-mangle_bootargs.patch b/target/linux/generic/patches-3.18/995-mangle_bootargs.patch
index 5d56cf4462..0029e90822 100644
--- a/target/linux/generic/patches-3.18/995-mangle_bootargs.patch
+++ b/target/linux/generic/patches-3.18/995-mangle_bootargs.patch
@@ -1,8 +1,8 @@
--- a/init/main.c
+++ b/init/main.c
-@@ -379,6 +379,26 @@ static void __init setup_command_line(ch
- strcpy(static_command_line, command_line);
- }
+@@ -362,6 +362,29 @@ static inline void setup_nr_cpu_ids(void
+ static inline void smp_prepare_cpus(unsigned int maxcpus) { }
+ #endif
+#ifdef CONFIG_MANGLE_BOOTARGS
+static void __init mangle_bootargs(char *command_line)
@@ -11,10 +11,14 @@
+ char *rootfs;
+
+ rootdev = strstr(command_line, "root=/dev/mtdblock");
-+ strncpy(rootdev, "mangled_rootblock=", 18);
++
++ if (rootdev)
++ strncpy(rootdev, "mangled_rootblock=", 18);
+
+ rootfs = strstr(command_line, "rootfstype");
-+ strncpy(rootfs, "mangled_fs", 10);
++
++ if (rootfs)
++ strncpy(rootfs, "mangled_fs", 10);
+
+}
+#else
@@ -23,11 +27,10 @@
+}
+#endif
+
-+
/*
- * We need to finalize in a non-__init function or else race conditions
- * between the root thread and the init thread may cause start_kernel to
-@@ -530,6 +550,7 @@ asmlinkage __visible void __init start_k
+ * We need to store the untouched command line for future reference.
+ * We also need to store the touched command line since the parameter
+@@ -530,6 +553,7 @@ asmlinkage __visible void __init start_k
pr_notice("%s", linux_banner);
setup_arch(&command_line);
mm_init_cpumask(&init_mm);