Hi,everyone.
These days, I have been working on android porting. But cannot launch
the file of /init in the ramdisk.img.
I have found that the ramdisk.img has been unpacked and mounted to
rootfs.
In the kernel , I can list the entry of the initial ramdisk by printk
function.
But when run the first process /init on the rootfs ,Nothing has
happened.
And I printk the return value of do_execve, the value is correct.
The process is executed as follows.
start_kernel->rest_init->kernel_init->init_post->run_init_process-
>kernel_execve
In the kernel_execve ,printk the return value of do_execve. And the
value is zero. I think that is right.
But why the screen has nothing to export?
int kernel_execve(const char *filename, char *const argv[], char
*const envp[])
{
struct pt_regs
regs;
int
ret;
memset(®s, 0, sizeof(struct
pt_regs));
ret = do_execve((char *)filename, (char __user * __user
*)argv,
(char __user * __user *)envp,
®s);
if (ret <
0)
goto
out;
/
*
* Save argc to the register structure for
userspace.
*/
regs.ARM_r0 =
ret;
printk("ret:%d\n",ret);
...
All suggestions will be appreciated.
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