Author: alexander
Date: 2005-05-03 02:24:06 -0600 (Tue, 03 May 2005)
New Revision: 120
Removed:
branches/unionfs/initramfs/init.c
Log:
Deleted init.c, because it confuses Make in some timezones (Make attempts to
compile init.c to init).
Deleted: branches/unionfs/initramfs/init.c
===================================================================
--- branches/unionfs/initramfs/init.c 2005-05-02 02:52:17 UTC (rev 119)
+++ branches/unionfs/initramfs/init.c 2005-05-03 08:24:06 UTC (rev 120)
@@ -1,255 +0,0 @@
-/*
- Init for the Official LFS LiveCD
- Written by Jeremy Huntwork, based on code by Chris Lingard.
- Major overhaul/reorganization by James Lee on 2005-01-06.
-
- This code sets up a directory structure for the cd in the initramfs,
- finds and mounts the LFS LiveCD, makes essential symlinks to read-
- only directories on the cd and starts udev. Finally it passes
- control over to sysvinit to finish the boot process.
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-#include <sys/mount.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <linux/cdrom.h>
-#include <linux/reboot.h>
-
-#define CDROM_MOUNT "/.cdrom" /* Mount point for CD */
-#define CDROM_FSTYPE "iso9660" /* Filesystem of CD (could be udf?
:) */
-#define LFSID_FILE CDROM_MOUNT "/LFS" /* The file the LFS ID is stored in
*/
-#define LFSID_STRING "LFS-LIVECD" /* Text expected in the file */
-#define MAX_RETRIES 3 /* How many times to retry scanning
for the liveCD */
-
-
-/* Devices to check for the LFS-CD, could scan some stuff in /proc in a later
version */
-const char *devices[] =
-{
- "/dev/hda", "/dev/hdb", "/dev/hdc", "/dev/hdd", "/dev/hde", "/dev/hdf",
"/dev/hdg", "/dev/hdh",
- "/dev/sr0", "/dev/sr1", "/dev/sr2", "/dev/sr3", "/dev/sr4", "/dev/sr5",
"/dev/sr6", "/dev/sr7",
- NULL,
-};
-
-/* Dunno what this MAX_ thing is about, i'll just leave it, if it works */
-#define MAX_INIT_ARGS 8
-#define MAX_INIT_ENVS 8
-char *init_envp[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
-char *init_argv[MAX_INIT_ARGS+2] = { "init", NULL, };
-
-/* The var tree, just mkdir()'ed */
-const char *var_tree[] = {
- "var",
- "var/cache", "var/empty", "var/lib", "var/local", "var/lock",
- "var/log", "var/mail", "var/opt", "var/run", "var/spool",
"var/tmp",
- "var/lib/locate", "var/lib/misc", "var/lib/nfs", "var/lib/xkb",
"var/lib/xdm",
- NULL,
-};
-
-/* Links to be made */
-const char *cdrom_links[][2] =
-{
- {CDROM_MOUNT "/bin", "bin"},
- {CDROM_MOUNT "/lib", "lib"},
- {CDROM_MOUNT "/sbin", "sbin"},
- {CDROM_MOUNT "/etc", "etc"},
- {CDROM_MOUNT "/boot", "boot"},
- {CDROM_MOUNT "/sources", "sources"},
- {NULL, NULL},
-};
-
-const char *proc_links[][2] =
-{
- {"/proc/self/fd", "/dev/fd"},
- {"/proc/self/fd/0", "/dev/stdin"},
- {"/proc/self/fd/1", "/dev/stdout"},
- {"/proc/self/fd/2", "/dev/stderr"},
- {"/proc/kcore", "/dev/core"},
- {NULL, NULL},
-};
-
-
-int mountlfscd(void);
-inline int vfsmount(char *target, char *fs, int perms, char *params);
-
-int main(void)
-{
- int i;
-
- umask(0);
-
- printf("Initramfs activated\n");
-
- vfsmount("/proc", "proc", 0755, NULL);
- vfsmount("/sys", "sysfs", 0755, NULL);
-
- mkdir(CDROM_MOUNT, 0755);
-
- for (i=0;i<MAX_RETRIES;i++)
- {
- if (mountlfscd())
- break;
-
- /* Failed to find any device with an lfs boot cd in :( */
- printf("I couldn't find an LFS LiveCD in any drive!!\n");
- printf("I'm going to wait 10 seconds and try again (Try
%d/%d)\n", i, MAX_RETRIES);
- sleep(10);
- }
-
- if (i>=MAX_RETRIES)
- {
- printf("I couldn't find an LFS LiveCD in any drive after %d
retries!\n", MAX_RETRIES);
- /* reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
LINUX_REBOOT_CMD_HALT, NULL); */
- return(1);
- }
-
- /* If we're here, we have an lfs cd mounted and verified */
- printf("Building Directory Structure...\n");
- mkdir("tmp", 01777);
- mkdir("root", 01750);
- mkdir("home", 01755);
- mkdir("mnt", 01755);
- mkdir("mnt/lfs", 01755);
-
- /* Make var directories */
- for (i=0;var_tree[i]!=NULL;i++)
- mkdir(var_tree[i], 0755);
-
- /* Make some links */
- for(i=0;cdrom_links[i][0]!=NULL;i++)
- symlink(cdrom_links[i][0], cdrom_links[i][1]);
-
- printf("Populating /dev with device nodes...\n");
-
- i = mount("none", "/dev", "ramfs", 0, NULL);
- if (i<0)
- printf("Failed to mount /dev: %s\n", strerror(errno));
-
- system("/sbin/udevstart");
-
- /* Make some links */
- for(i=0;proc_links[i][0]!=NULL;i++)
- symlink(proc_links[i][0], proc_links[i][1]);
-
- /* Mount some stuff*/
- vfsmount("/dev/pts", "devpts", 0755, "gid=4,mode=620");
- vfsmount("/dev/shm", "tmpfs", 01777, NULL);
-
- /* We're done!! */
- printf("Starting init...\n");
- i = execve("/sbin/init", init_argv, init_envp);
- if (i<0)
- printf("Failed to start init: %s :(\n", strerror(errno));
-
- return(0);
-}
-
-/* Mount a virtual file system */
-inline int vfsmount(char *target, char *fs, int perms, char *params)
-{
- int i;
- printf("Mounting %s...\n", target);
- mkdir(target, perms);
- i = mount("none", target, fs, 0, params);
- if (i<0)
- {
- printf("Failed to mount %s[%s]: %s\n", target, fs,
strerror(errno));
- return(-1);
- }
- return(0);
-}
-
-/* This will look for and mount an LFS CD, if found/mounted it'll return 1,
otherwise 0 */
-int mountlfscd(void)
-{
- int i;
-
- for(i=0;devices[i]!=NULL;i++)
- {
- int fd, status;
- const char *curdevice = devices[i];
- char buf[32];
-
- /* Try to open CD drive to see if we can use it */
- fd = open(curdevice, O_RDONLY | O_NONBLOCK);
- if (fd<0)
- {
- /*
- We'll get here if we can't open the device
- (No such device, No such file or directory,
etc, etc)
-
- printf("%s: open failed: %s\n", curdevice,
strerror(errno)); */
- continue; /* On to the next device!! */
- }
-
- /* Try to see what the status of the CD drive is */
- status = ioctl(fd, CDROM_DRIVE_STATUS, 0);
- if (status<0)
- {
- /* We'll probably get here if we open a hard disk */
- /* printf("%s: ioctl failed: %s\n", curdevice,
strerror(errno)); */
- close(fd);
- continue; /* On to the next device!! */
- }
-
- close(fd); /* We don't need this fd any more */
-
- if (status != CDS_DISC_OK)
- {
- /* We'll probably get here if there's no CD in the
drive */
- printf("%s: Drive not ready\n", curdevice);
- continue; /* On to the next device!! */
- }
-
- /* If we're here, the cd drive seems to have a disc in it, and
is okay! */
-
- /* Try to mount the cd drive*/
- status = mount(curdevice, CDROM_MOUNT, CDROM_FSTYPE, MS_RDONLY,
NULL);
- if (status<0)
- {
- printf("%s: mount failed: %s\n", curdevice,
strerror(errno));
- continue; /* On to the next device!! */
- }
-
- /* If we're here, we have definatly have a data CD mounted at
the mount point :) */
-
-
- /* Lets try to make sure it's the LFS LiveCD :) */
- fd = open(LFSID_FILE, O_RDONLY);
- if (fd<0)
- {
- printf("%s: Not our LFS LiveCD!\n", curdevice);
- continue; /* On to the next device!! */
- }
-
- memset(buf, 0, 32); /* Clear buffer so we don't have to check
read's status */
- read(fd, buf, 10);
- close(fd);
-
- if (memcmp(buf, LFSID_STRING, strlen(LFSID_STRING)))
- {
- printf("%s: %s incorrect data\n", curdevice,
LFSID_FILE);
- status = umount(curdevice);
- if (status<0)
- printf("%s: umount failed: %s\n", curdevice,
strerror(errno));
- /* (don't care if umount failed, not much we
can do about it, but nice to say anyway) */
- continue; /* On to the next device!! */
- }
-
- /* YAY! we have the lfs boot cd mounted :) */
- printf("%s: LFS CD Verified\n", curdevice);
- return(1);
- }
-
- /* Nuts, can't find an lfs livecd anywhere */
-
- return(0);
-}
-
--
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