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FHS(Filesystem Hierarchy Standard)标准介绍
当我们在linux下输入ls / 的时候,见到的目录结构以及这些目录下的内容都大同小异,这是因为所有的linux发行版在对根文件系统布局上都遵循FHS标准的建议规定。
748 static int noinline init_post(void)
749 {
750 free_initmem();
751 unlock_kernel();
752 mark_rodata_ro();
753 system_state =
SYSTEM_RUNNING;
754 numa_default_policy();
755
756 if (sys_open((const char
__user *) "/dev/console", O_RDWR, 0) < 0)
757
printk(KERN_WARNING "Warning: unable to open an initial console.\n");
758
759 (void) sys_dup(0);
760 (void) sys_dup(0);
761
762 if
(ramdisk_execute_command) {
763
run_init_process(ramdisk_execute_command);
764
printk(KERN_WARNING "Failed to execute %s\n",
765
ramdisk_execute_command);
766 }
767
768 /*
769 * We try each of
these until one succeeds.
770 *
771 * The Bourne shell
can be used instead of init if we are
772 * trying to recover a
really broken machine.
773 */
774 if (execute_command) {
775
run_init_process(execute_command);
776
printk(KERN_WARNING "Failed to execute %s. Attempting "
777
"defaults...\n", execute_command);
778 }
779
run_init_process("/sbin/init");
780
run_init_process("/etc/init");
781
run_init_process("/bin/init");
782
run_init_process("/bin/sh");
783
784 panic("No init
found. Try passing init= option to kernel.");
785 }
显然,内核错误是由175行不能打开/dev/console所致。通过查看已经安装好的linux机器的/dev/console设备文件,可知其是字符设备文件,主设备号为5,次设备号为1:
dennis@dennis-desktop:/work/nfs_root/fs_mini3/etc$ ls -l /dev/consolecrw------- 1 root root 5, 1 2010-04-08 08:40 /dev/console