Kernel Panic apres Changement du syscall CHROOT
Salut j'utilise Ubuntu Maverick,
lorsque je compile le kernel 2.6.36.2 en changeant la fonction syscall_chroot :
Code:
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|
SYSCALL_DEFINE1(chroot, const char __user *, filename)
{
struct path path;
int error;
/* Hack */
struct user_struct * myUser;
char * buf = NULL; //Buffer
struct path user_path; // current path
buf = vmalloc(sizeof(char)*PATH_MAX);
/* Hack */
error = user_path_dir(filename, &path);
if (error)
goto out;
error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
if (error)
goto dput_and_out;
error = -EPERM;
if (!capable(CAP_SYS_CHROOT))
goto dput_and_out;
error = security_path_chroot(&path);
if (error)
goto dput_and_out;
/* Hack */
printk("HACK Begin \n");
myUser = get_current_user();
printk("current user : UID=%d \n", myUser->uid);
printk("change from folder %s with Inode : %ld \n", d_path(&user_path, buf, PATH_MAX), user_path.dentry->d_inode->i_ino);
printk("to folder %s with Inode : %ld \n", d_path(&path, buf, PATH_MAX), path.dentry->d_inode->i_ino);
vfree(buf);
/* End Hack */
set_fs_root(current->fs, &path);
error = 0;
dput_and_out:
path_put(&path);
out:
return error;
} |
J'ai automatiquement un kernel Panic!
Y a t-il une Erreur dans le code?? je m'y connais pas tres bien en programmation kernel.
Merci
