ECE497 Listings for Embedded Linux Primer Chapter 6

Number	Page	Caption	Listing
6-1	6-4	Contents of Minimal File System	/ |-- bin | |-- busybox | '-- sh -> busybox |-- dev | '-- console |-- etc | '-- init.d | '-- rcS '-- lib |-- ld-2.3.2.so |-- ld-linux.so.2 -> ld-2.3.2.so |-- libc-2.3.2.so '-- libc.so.6 -> libc-2.3.2.so 5 directories, 8 files
6-2	6-7	Final Boot Steps from main.c	... if (execute_command) { run_init_process(execute_command); printk(KERN_WARNING "Failed to execute %s. Attempting " "defaults...\n", execute_command); } run_init_process("/sbin/init"); run_init_process("/etc/init"); run_init_process("/bin/init"); run_init_process("/bin/sh"); panic("No init found. Try passing init= option to kernel."); }
6-3	6-11	Final Boot Steps from main.c
6-4	6-12	Runlevel Directory Structure on Beagle	$ ls -dl /etc/rc* drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc0.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc1.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc2.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc3.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc4.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc5.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rc6.d drwxr-xr-x 2 root root 4096 Mar 13 20:18 /etc/rcS.d
6-5	6-12	Example Runlevel Directory on Beagle	$ ls -ls rc5.d/ total 0 0 lrwxrwxrwx 1 root root 20 Mar 13 20:18 S05led-config -> ../init.d/led-config 0 lrwxrwxrwx 1 root root 18 Mar 13 20:18 S10dropbear -> ../init.d/dropbear 0 lrwxrwxrwx 1 root root 14 Mar 13 20:18 S20apmd -> ../init.d/apmd 0 lrwxrwxrwx 1 root root 16 Mar 13 20:18 S20dbus-1 -> ../init.d/dbus-1 0 lrwxrwxrwx 1 root root 16 Mar 13 20:18 S20syslog -> ../init.d/syslog 0 lrwxrwxrwx 1 root root 22 Mar 13 20:18 S21avahi-daemon -> ../init.d/avahi-daen 0 lrwxrwxrwx 1 root root 17 Mar 13 20:18 S22connman -> ../init.d/connman 0 lrwxrwxrwx 1 root root 17 Mar 13 20:18 S30ntpdate -> ../init.d/ntpdate 0 lrwxrwxrwx 1 root root 20 Mar 13 20:18 S50usb-gadget -> ../init.d/usb-gadget 0 lrwxrwxrwx 1 root root 16 Mar 13 20:18 S99gpe-dm -> ../init.d/gpe-dm 0 lrwxrwxrwx 1 root root 19 Mar 13 20:18 S99rmnologin -> ../init.d/rmnologin 0 lrwxrwxrwx 1 root root 20 Mar 4 22:09 S99zzapsplash -> ../init.d/zzapsplash
6-6	6-	Example Runlevel Directory on Beagle
6-13	6-23	Kernel initramfs Build Directory	total 60 -rw-r--r-- 1 yoder yoder 1620 Mar 8 11:19 Kconfig -rw-r--r-- 1 yoder yoder 1876 Mar 8 11:19 Makefile -rw-r--r-- 1 yoder yoder 741 Mar 9 12:43 built-in.o -rwxr-xr-x 1 yoder yoder 18280 Mar 8 13:03 gen_init_cpio -rw-r--r-- 1 yoder yoder 12536 Mar 8 11:19 gen_init_cpio.c -rw-r--r-- 1 yoder yoder 1024 Mar 8 11:19 initramfs_data.S -rw-r--r-- 1 yoder yoder 133 Mar 8 13:03 initramfs_data.cpio.gz -rw-r--r-- 1 yoder yoder 741 Mar 8 13:03 initramfs_data.o -rw-r--r-- 1 yoder yoder 0 Mar 8 13:18 modules.order
6-14	6-25	Kernel initramfs Build Directory	dir /dev 0755 0 0 nod /dev/console 0600 0 0 c 5 1 dir /root 0700 0 0
6-15	6-25	Minimal initramfs contents	$ tree .../usr/myinitramfs_root/ . |-- bin | |-- busybox | `-- sh -> busybox |-- dev | `-- console |-- etc | `-- init.d | `-- rcS `-- init -> /bin/sh 4 directories, 5 files