Bernard Li wrote: > Was trying to build SystemImager trunk as a non-root user, can got the > following error: > > cd > /home/bli/rpmbuild/BUILD/systemimager-3.7.2r3474M_bli/initrd_source/buil > d_dir/dev && mknod -m 660 console c 5 1 > mknod: `console': Operation not permitted > make: *** > [/home/bli/rpmbuild/BUILD/systemimager-3.7.2r3474M_bli/initrd_source/bui > ld_dir.prep] Error 1 > error: Bad exit status from /var/tmp/rpm-tmp.31264 (%build) > > Would it be possible to tar up the special files (console, null) and > just copy them over as needed? > > Cheers, > > Bernard
Another way could be to let the kernel to create the devices (the patch is very very simple - see the attachment), but to do that the initrd fs would be writeable and at the moment this is not our case (cramfs is a read-only fs)... To obviate this problem we could start to consider to use cpio ramdisk, also the most part of the latest distro seem to move in this direction... I did some tests trying to create a gzipped cpio initrd and that was very nice! 4.2MB instead of 5MB with a gzipped cramfs ramdisk. Unfortunately there are some incompatibilities with pivot_root and cpio rootfs (see /usr/src/linux/Documentation/filesystems/ramfs-rootfs-initramfs.txt), so I've not spent other time to check if there's a workaround, or better the workaround should be to use switch_root (already present in the recent busybox 1.1.1), but the behaviour of switch_root is quite different than pivot_root... Cheers, -Andrea
--- linux-2.6.16/init/main.c.orig 2006-03-20 06:53:29.000000000 +0100 +++ linux-2.6.16/init/main.c 2006-03-25 10:14:45.000000000 +0100 @@ -710,6 +710,17 @@ system_state = SYSTEM_RUNNING; numa_default_policy(); + /* Special devices needed by BOEL */ + if (sys_mknod((const char __user *) "/dev/console", S_IFCHR | 0600, + new_encode_dev(MKDEV(5, 1))) < 0) + printk(KERN_WARNING "Warning: unable to create special file /dev/console.\n"); + if (sys_mknod((const char __user *) "/dev/null", S_IFCHR | 0666, + new_encode_dev(MKDEV(1, 3))) < 0) + printk(KERN_WARNING "Warning: unable to create special file /dev/null.\n"); + if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0) printk(KERN_WARNING "Warning: unable to open an initial console.\n");
