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authorMasami Hiramatsu <mhiramat@kernel.org>2020-11-20 05:29:13 +0300
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2020-12-01 07:22:11 +0300
commite86843580d1bb1ce12544bca3115cf11d51603ff (patch)
tree3b738cfc275115c07dc805b53b6c17ec1d3d055b /tools/bootconfig
parent24aed09451270b6a2a78adf8a34918d12ffb7dcf (diff)
downloadlinux-e86843580d1bb1ce12544bca3115cf11d51603ff.tar.xz
tools/bootconfig: Store size and checksum in footer as le32
Store the size and the checksum fields in the footer as le32 instead of u32. This will allow us to apply bootconfig to the cross build initrd without caring the endianness. Link: https://lkml.kernel.org/r/160583935332.547349.5897811300636587426.stgit@devnote2 Reported-by: Steven Rostedt <rostedt@goodmis.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'tools/bootconfig')
-rw-r--r--tools/bootconfig/main.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/bootconfig/main.c b/tools/bootconfig/main.c
index 4a445b6304bb..7362bef1a368 100644
--- a/tools/bootconfig/main.c
+++ b/tools/bootconfig/main.c
@@ -10,6 +10,7 @@
#include <unistd.h>
#include <string.h>
#include <errno.h>
+#include <endian.h>
#include <linux/kernel.h>
#include <linux/bootconfig.h>
@@ -183,9 +184,11 @@ static int load_xbc_from_initrd(int fd, char **buf)
if (read(fd, &size, sizeof(u32)) < 0)
return pr_errno("Failed to read size", -errno);
+ size = le32toh(size);
if (read(fd, &csum, sizeof(u32)) < 0)
return pr_errno("Failed to read checksum", -errno);
+ csum = le32toh(csum);
/* Wrong size error */
if (stat.st_size < size + 8 + BOOTCONFIG_MAGIC_LEN) {
@@ -407,10 +410,10 @@ static int apply_xbc(const char *path, const char *xbc_path)
/* Add a footer */
p = data + size;
- *(u32 *)p = size;
+ *(u32 *)p = htole32(size);
p += sizeof(u32);
- *(u32 *)p = csum;
+ *(u32 *)p = htole32(csum);
p += sizeof(u32);
memcpy(p, BOOTCONFIG_MAGIC, BOOTCONFIG_MAGIC_LEN);