On 12.4.2011 07:01, Paul Bolle wrote:
On Mon, 2011-04-11 at 17:08 +0200, Michal Marek wrote:
Subject: [PATCH] x86: Do not set the rood_dev field in bzImage
[...]
I'm not familiar with the rdev command. I assume it allows one to
manipulate the two rootdev bytes in a kernel image.
Yes.
Anyhow, shouldn't
the above patch be complemented with something like the following?
diff --git a/arch/x86/boot/tools/build.c b/arch/x86/boot/tools/build.c
index ee3a4ea..fdc60a0 100644
That makes sense. Will you send it as a proper patch or should I fold it
into my patch?
Michal
--- a/arch/x86/boot/tools/build.c
+++ b/arch/x86/boot/tools/build.c
@@ -130,7 +130,7 @@ static void die(const char * str, ...)
static void usage(void)
{
- die("Usage: build setup system [rootdev] [> image]");
+ die("Usage: build setup system [> image]");
}
int main(int argc, char ** argv)
@@ -138,39 +138,14 @@ int main(int argc, char ** argv)
unsigned int i, sz, setup_sectors;
int c;
u32 sys_size;
- u8 major_root, minor_root;
struct stat sb;
FILE *file;
int fd;
void *kernel;
u32 crc = 0xffffffffUL;
- if ((argc< 3) || (argc> 4))
+ if (argc != 3)
usage();
- if (argc> 3) {
- if (!strcmp(argv[3], "CURRENT")) {
- if (stat("/",&sb)) {
- perror("/");
- die("Couldn't stat /");
- }
- major_root = major(sb.st_dev);
- minor_root = minor(sb.st_dev);
- } else if (strcmp(argv[3], "FLOPPY")) {
- if (stat(argv[3],&sb)) {
- perror(argv[3]);
- die("Couldn't stat root device.");
- }
- major_root = major(sb.st_rdev);
- minor_root = minor(sb.st_rdev);
- } else {
- major_root = 0;
- minor_root = 0;
- }
- } else {
- major_root = DEFAULT_MAJOR_ROOT;
- minor_root = DEFAULT_MINOR_ROOT;
- }
- fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
/* Copy the setup code */
file = fopen(argv[1], "r");
@@ -193,8 +168,8 @@ int main(int argc, char ** argv)
memset(buf+c, 0, i-c);
/* Set the default root device */
- buf[508] = minor_root;
- buf[509] = major_root;
+ buf[508] = DEFAULT_MINOR_ROOT;
+ buf[509] = DEFAULT_MAJOR_ROOT;
fprintf(stderr, "Setup is %d bytes (padded to %d bytes).\n", c, i);
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