* Re: VFS: Cannot open root device "304" or hda4
@ 2003-08-01 17:54 jorge kernel
0 siblings, 0 replies; 4+ messages in thread
From: jorge kernel @ 2003-08-01 17:54 UTC (permalink / raw)
To: linux-kernel
>From: Burton Windle <bwindle@fint.org>
>To: kernel_286@hotmail.com
>Subject: Re: VFS: Cannot open root device "304" or hda4
>Date: Fri, 1 Aug 2003 11:36:01 -0400 (EDT)
Hi Burton,
>Are you sure that you compiled in support for your IDE controller and file
>system type?
Mmm..
My hardware config consists in an Acer 272Xv with sis chipset 650 (I read it
in 2.4.21 and previous dmesg).
I think that config file is OK because when 2.6 starts, I can see something
about "SIS961 chipset MUTIOL", and in the .config file I've set
CONFIG_BLK_DEV_SIS5513=y that I always used for previous kernels.
Mario
>
>--
>Burton Windle burton@fint.org
>Linux: the "grim reaper of innocent orphaned children."
> from /usr/src/linux-2.4.18/init/main.c:461
>
_________________________________________________________________
Nuovo MSN Messenger 6.0 con sfondi e giochi! http://messenger.msn.it/
Provalo subito!
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: VFS: Cannot open root device "304" or hda4
@ 2003-08-01 17:59 jorge kernel
0 siblings, 0 replies; 4+ messages in thread
From: jorge kernel @ 2003-08-01 17:59 UTC (permalink / raw)
To: linux-kernel
>From: Cédric Barboiron <ced2ml@ifrance.com>
>To: kernel_286@hotmail.com
>Subject: Re: VFS: Cannot open root device "304" or hda4
>Date: Fri, 01 Aug 2003 17:27:12 +0200
Hi Cédric,
[cut]
>Did you enable correct Partition Type Support ?
I think the config file is OK because I've only set the partition types I
need and I always used (My root fs is ext3):
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
# CONFIG_EXT2_FS_POSIX_ACL is not set
# CONFIG_EXT2_FS_SECURITY is not set
CONFIG_EXT3_FS=y <-------
CONFIG_EXT3_FS_XATTR=y <-------
CONFIG_EXT3_FS_POSIX_ACL=y <-------
# CONFIG_EXT3_FS_SECURITY is not set
CONFIG_JBD=y <-------
CONFIG_JBD_DEBUG=y <------
CONFIG_FS_MBCACHE=y
CONFIG_REISERFS_FS=y
# CONFIG_REISERFS_CHECK is not set
# CONFIG_REISERFS_PROC_INFO is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_QUOTA=y
# CONFIG_QFMT_V1 is not set
# CONFIG_QFMT_V2 is not set
CONFIG_QUOTACTL=y
# CONFIG_AUTOFS_FS is not set
CONFIG_AUTOFS4_FS=y
I've even tried using initrd, but when 2.6 start, I see that it can't load
any initrd image: unfortunatly I've create it with 'mkinitrd -o
/boot/initrd-2.6-t2 /lib/modules/linux-2.6-test2'...
Mario
_________________________________________________________________
Nuovo MSN Messenger 6.0 con sfondi e giochi! http://messenger.msn.it/
Provalo subito!
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: VFS: Cannot open root device "304" or hda4
2003-08-01 15:05 kernel_286
@ 2003-08-01 15:27 ` Cédric
0 siblings, 0 replies; 4+ messages in thread
From: Cédric @ 2003-08-01 15:27 UTC (permalink / raw)
To: linux-kernel
kernel_286@hotmail.com wrote:
> Hi to all, this is my first post on LKML.
>
> I'm trying 2.6.0-test2-mm2 and the compiling process ends with no errors
> except for some warnings about oss modules.
> After reboot with the 2.6 I obtain a kernel panic error:
>
> **************************************
> VFS: Cannot open root device "304" or hda4
> Please append a correct "root=" boot option
> VFS: Unable to mount root fs on hda4;
> **************************************
> I've read old ML posts but the don't help me.
> According to 2.4.21, the root fs is /dev/hda4: I've tried to give "root=0304"
> or "root=/dev/hda4" at the 2.6, but I obtain the same errors.
> I've even tried initrd with no changes.
>
> I've introduced some printk in init/do_mount.c (see the linked file at line
> 64) and before the kernel panic, the result was :
>
> ***************************************
> name hda4 - /sys/block/hda4/dev
> descriptor -1
>
> name hda - /sys/block/hda/dev
> descriptor 0
>
> scanning '3:0'
> ***************************************
>
> Is it normal?
>
> Thanks a lot.
> Mario
>
> PS: sorry for my 'bad' english.. I'm learning...
>
>
>
>
> ------------------------------------------------------------------------
>
> #include <linux/sched.h>
> #include <linux/ctype.h>
> #include <linux/fd.h>
> #include <linux/tty.h>
> #include <linux/suspend.h>
> #include <linux/root_dev.h>
> #include <linux/security.h>
>
> #include <linux/nfs_fs.h>
> #include <linux/nfs_fs_sb.h>
> #include <linux/nfs_mount.h>
>
> #include "do_mounts.h"
>
> extern int get_filesystem_list(char * buf);
>
> int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */
>
> int root_mountflags = MS_RDONLY | MS_VERBOSE;
> char * __initdata root_device_name;
> static char __initdata saved_root_name[64];
>
> /* this is initialized in init/main.c */
> dev_t ROOT_DEV;
>
> static int __init load_ramdisk(char *str)
> {
> rd_doload = simple_strtol(str,NULL,0) & 3;
> return 1;
> }
> __setup("load_ramdisk=", load_ramdisk);
>
> static int __init readonly(char *str)
> {
> if (*str)
> return 0;
> root_mountflags |= MS_RDONLY;
> return 1;
> }
>
> static int __init readwrite(char *str)
> {
> if (*str)
> return 0;
> root_mountflags &= ~MS_RDONLY;
> return 1;
> }
>
> __setup("ro", readonly);
> __setup("rw", readwrite);
>
> static dev_t __init try_name(char *name, int part)
> {
> char path[64];
> char buf[32];
> int range;
> dev_t res;
> char *s;
> int len;
> int fd;
> unsigned int maj, min;
>
> /* read device number from .../dev */
>
> sprintf(path, "/sys/block/%s/dev", name);
> printk("name %s - path %s\n",name, path);
> fd = open(path, 0, 0);
> printk("descriptor %d\n",fd);
> if (fd < 0)
> goto fail;
> len = read(fd, buf, 32);
> close(fd);
> if (len <= 0 || len == 32 || buf[len - 1] != '\n')
> goto fail;
> buf[len - 1] = '\0';
> /*
> * The format of dev is now %u:%u -- see print_dev_t()
> */
> printk("scanning `%s'\n", buf);
> if (sscanf(buf, "%u:%u", &maj, &min) == 2)
> res = MKDEV(maj, min);
> else
> goto fail;
>
> /* if it's there and we are not looking for a partition - that's it */
> if (!part)
> return res;
>
> /* otherwise read range from .../range */
> sprintf(path, "/sys/block/%s/range", name);
> fd = open(path, 0, 0);
> if (fd < 0)
> goto fail;
> len = read(fd, buf, 32);
> close(fd);
> if (len <= 0 || len == 32 || buf[len - 1] != '\n')
> goto fail;
> buf[len - 1] = '\0';
> range = simple_strtoul(buf, &s, 10);
> if (*s)
> goto fail;
>
> /* if partition is within range - we got it */
> if (part < range)
> return res + part;
> fail:
> return (dev_t) 0;
> }
>
> /*
> * Convert a name into device number. We accept the following variants:
> *
> * 1) device number in hexadecimal represents itself
> * 2) /dev/nfs represents Root_NFS (0xff)
> * 3) /dev/<disk_name> represents the device number of disk
> * 4) /dev/<disk_name><decimal> represents the device number
> * of partition - device number of disk plus the partition number
> * 5) /dev/<disk_name>p<decimal> - same as the above, that form is
> * used when disk name of partitioned disk ends on a digit.
> *
> * If name doesn't have fall into the categories above, we return 0.
> * Driverfs is used to check if something is a disk name - it has
> * all known disks under bus/block/devices. If the disk name
> * contains slashes, name of driverfs node has them replaced with
> * dots. try_name() does the actual checks, assuming that driverfs
> * is mounted on rootfs /sys.
> */
>
> dev_t name_to_dev_t(char *name)
> {
> char s[32];
> char *p;
> dev_t res = 0;
> int part;
>
> sys_mkdir("/sys", 0700);
> if (sys_mount("sysfs", "/sys", "sysfs", 0, NULL) < 0)
> goto out;
>
> if (strncmp(name, "/dev/", 5) != 0) {
> res = (dev_t) simple_strtoul(name, &p, 16);
> if (*p)
> goto fail;
> goto done;
> }
> name += 5;
> res = Root_NFS;
> if (strcmp(name, "nfs") == 0)
> goto done;
>
> if (strlen(name) > 31)
> goto fail;
> strcpy(s, name);
> for (p = s; *p; p++)
> if (*p == '/')
> *p = '.';
> res = try_name(s, 0);
> if (res)
> goto done;
>
> while (p > s && isdigit(p[-1]))
> p--;
> if (p == s || !*p || *p == '0')
> goto fail;
> part = simple_strtoul(p, NULL, 10);
> *p = '\0';
> res = try_name(s, part);
> if (res)
> goto done;
>
> if (p < s + 2 || !isdigit(p[-2]) || p[-1] != 'p')
> goto fail;
> p[-1] = '\0';
> res = try_name(s, part);
> done:
> sys_umount("/sys", 0);
> out:
> sys_rmdir("/sys");
> return res;
> fail:
> res = (dev_t) 0;
> goto done;
> }
>
> static int __init root_dev_setup(char *line)
> {
> strlcpy(saved_root_name, line, sizeof(saved_root_name));
> return 1;
> }
>
> __setup("root=", root_dev_setup);
>
> static char * __initdata root_mount_data;
> static int __init root_data_setup(char *str)
> {
> root_mount_data = str;
> return 1;
> }
>
> static char * __initdata root_fs_names;
> static int __init fs_names_setup(char *str)
> {
> root_fs_names = str;
> return 1;
> }
>
> __setup("rootflags=", root_data_setup);
> __setup("rootfstype=", fs_names_setup);
>
> static void __init get_fs_names(char *page)
> {
> char *s = page;
>
> if (root_fs_names) {
> strcpy(page, root_fs_names);
> while (*s++) {
> if (s[-1] == ',')
> s[-1] = '\0';
> }
> } else {
> int len = get_filesystem_list(page);
> char *p, *next;
>
> page[len] = '\0';
> for (p = page-1; p; p = next) {
> next = strchr(++p, '\n');
> if (*p++ != '\t')
> continue;
> while ((*s++ = *p++) != '\n')
> ;
> s[-1] = '\0';
> }
> }
> *s = '\0';
> }
>
> static int __init do_mount_root(char *name, char *fs, int flags, void *data)
> {
> int err = sys_mount(name, "/root", fs, flags, data);
> if (err)
> return err;
>
> sys_chdir("/root");
> ROOT_DEV = current->fs->pwdmnt->mnt_sb->s_dev;
> printk("VFS: Mounted root (%s filesystem)%s.\n",
> current->fs->pwdmnt->mnt_sb->s_type->name,
> current->fs->pwdmnt->mnt_sb->s_flags & MS_RDONLY ?
> " readonly" : "");
> return 0;
> }
>
> void __init mount_block_root(char *name, int flags)
> {
> char *fs_names = __getname();
> char *p;
> char b[BDEVNAME_SIZE];
>
> get_fs_names(fs_names);
> retry:
> for (p = fs_names; *p; p += strlen(p)+1) {
> int err = do_mount_root(name, p, flags, root_mount_data);
> switch (err) {
> case 0:
> goto out;
> case -EACCES:
> flags |= MS_RDONLY;
> goto retry;
> case -EINVAL:
> continue;
> }
> /*
> * Allow the user to distinguish between failed open
> * and bad superblock on root device.
> */
> __bdevname(ROOT_DEV, b);
> printk("VFS: Cannot open root device \"%s\" or %s\n",
> root_device_name, b);
> printk("Please append a correct \"root=\" boot option\n");
> panic("VFS: Unable to mount root fs on %s", b);
> }
> panic("VFS: Unable to mount root fs on %s", __bdevname(ROOT_DEV, b));
> out:
> putname(fs_names);
> }
>
> #ifdef CONFIG_ROOT_NFS
> static int __init mount_nfs_root(void)
> {
> void *data = nfs_root_data();
>
> create_dev("/dev/root", ROOT_DEV, NULL);
> if (data &&
> do_mount_root("/dev/root", "nfs", root_mountflags, data) == 0)
> return 1;
> return 0;
> }
> #endif
>
> #if defined(CONFIG_BLK_DEV_RAM) || defined(CONFIG_BLK_DEV_FD)
> void __init change_floppy(char *fmt, ...)
> {
> struct termios termios;
> char buf[80];
> char c;
> int fd;
> va_list args;
> va_start(args, fmt);
> vsprintf(buf, fmt, args);
> va_end(args);
> fd = open("/dev/root", O_RDWR | O_NDELAY, 0);
> if (fd >= 0) {
> sys_ioctl(fd, FDEJECT, 0);
> close(fd);
> }
> printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
> fd = open("/dev/console", O_RDWR, 0);
> if (fd >= 0) {
> sys_ioctl(fd, TCGETS, (long)&termios);
> termios.c_lflag &= ~ICANON;
> sys_ioctl(fd, TCSETSF, (long)&termios);
> read(fd, &c, 1);
> termios.c_lflag |= ICANON;
> sys_ioctl(fd, TCSETSF, (long)&termios);
> close(fd);
> }
> }
> #endif
>
> void __init mount_root(void)
> {
> #ifdef CONFIG_ROOT_NFS
> if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
> if (mount_nfs_root())
> return;
>
> printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy.\n");
> ROOT_DEV = Root_FD0;
> }
> #endif
> #ifdef CONFIG_BLK_DEV_FD
> if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
> /* rd_doload is 2 for a dual initrd/ramload setup */
> if (rd_doload==2) {
> if (rd_load_disk(1)) {
> ROOT_DEV = Root_RAM1;
> root_device_name = NULL;
> }
> } else
> change_floppy("root floppy");
> }
> #endif
> create_dev("/dev/root", ROOT_DEV, root_device_name);
> mount_block_root("/dev/root", root_mountflags);
> }
>
> /*
> * Prepare the namespace - decide what/where to mount, load ramdisks, etc.
> */
> void __init prepare_namespace(void)
> {
> int is_floppy;
>
> mount_devfs();
>
> md_run_setup();
>
> if (saved_root_name[0]) {
> root_device_name = saved_root_name;
> ROOT_DEV = name_to_dev_t(root_device_name);
> if (strncmp(root_device_name, "/dev/", 5) == 0)
> root_device_name += 5;
> }
>
> is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR;
>
> /* This has to be before mounting root, because even readonly mount of reiserfs would replay
> log corrupting stuff */
> software_resume();
>
> if (initrd_load())
> goto out;
>
> if (is_floppy && rd_doload && rd_load_disk(0))
> ROOT_DEV = Root_RAM0;
>
> mount_root();
> out:
> umount_devfs("/dev");
> sys_mount(".", "/", NULL, MS_MOVE, NULL);
> sys_chroot(".");
> security_sb_post_mountroot();
> mount_devfs_fs ();
> }
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* VFS: Cannot open root device "304" or hda4
@ 2003-08-01 15:05 kernel_286
2003-08-01 15:27 ` Cédric
0 siblings, 1 reply; 4+ messages in thread
From: kernel_286 @ 2003-08-01 15:05 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 1057 bytes --]
Hi to all, this is my first post on LKML.
I'm trying 2.6.0-test2-mm2 and the compiling process ends with no errors
except for some warnings about oss modules.
After reboot with the 2.6 I obtain a kernel panic error:
**************************************
VFS: Cannot open root device "304" or hda4
Please append a correct "root=" boot option
VFS: Unable to mount root fs on hda4;
**************************************
I've read old ML posts but the don't help me.
According to 2.4.21, the root fs is /dev/hda4: I've tried to give "root=0304"
or "root=/dev/hda4" at the 2.6, but I obtain the same errors.
I've even tried initrd with no changes.
I've introduced some printk in init/do_mount.c (see the linked file at line
64) and before the kernel panic, the result was :
***************************************
name hda4 - /sys/block/hda4/dev
descriptor -1
name hda - /sys/block/hda/dev
descriptor 0
scanning '3:0'
***************************************
Is it normal?
Thanks a lot.
Mario
PS: sorry for my 'bad' english.. I'm learning...
[-- Attachment #2: do_mounts.c --]
[-- Type: text/x-csrc, Size: 8587 bytes --]
#include <linux/sched.h>
#include <linux/ctype.h>
#include <linux/fd.h>
#include <linux/tty.h>
#include <linux/suspend.h>
#include <linux/root_dev.h>
#include <linux/security.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_fs_sb.h>
#include <linux/nfs_mount.h>
#include "do_mounts.h"
extern int get_filesystem_list(char * buf);
int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */
int root_mountflags = MS_RDONLY | MS_VERBOSE;
char * __initdata root_device_name;
static char __initdata saved_root_name[64];
/* this is initialized in init/main.c */
dev_t ROOT_DEV;
static int __init load_ramdisk(char *str)
{
rd_doload = simple_strtol(str,NULL,0) & 3;
return 1;
}
__setup("load_ramdisk=", load_ramdisk);
static int __init readonly(char *str)
{
if (*str)
return 0;
root_mountflags |= MS_RDONLY;
return 1;
}
static int __init readwrite(char *str)
{
if (*str)
return 0;
root_mountflags &= ~MS_RDONLY;
return 1;
}
__setup("ro", readonly);
__setup("rw", readwrite);
static dev_t __init try_name(char *name, int part)
{
char path[64];
char buf[32];
int range;
dev_t res;
char *s;
int len;
int fd;
unsigned int maj, min;
/* read device number from .../dev */
sprintf(path, "/sys/block/%s/dev", name);
printk("name %s - path %s\n",name, path);
fd = open(path, 0, 0);
printk("descriptor %d\n",fd);
if (fd < 0)
goto fail;
len = read(fd, buf, 32);
close(fd);
if (len <= 0 || len == 32 || buf[len - 1] != '\n')
goto fail;
buf[len - 1] = '\0';
/*
* The format of dev is now %u:%u -- see print_dev_t()
*/
printk("scanning `%s'\n", buf);
if (sscanf(buf, "%u:%u", &maj, &min) == 2)
res = MKDEV(maj, min);
else
goto fail;
/* if it's there and we are not looking for a partition - that's it */
if (!part)
return res;
/* otherwise read range from .../range */
sprintf(path, "/sys/block/%s/range", name);
fd = open(path, 0, 0);
if (fd < 0)
goto fail;
len = read(fd, buf, 32);
close(fd);
if (len <= 0 || len == 32 || buf[len - 1] != '\n')
goto fail;
buf[len - 1] = '\0';
range = simple_strtoul(buf, &s, 10);
if (*s)
goto fail;
/* if partition is within range - we got it */
if (part < range)
return res + part;
fail:
return (dev_t) 0;
}
/*
* Convert a name into device number. We accept the following variants:
*
* 1) device number in hexadecimal represents itself
* 2) /dev/nfs represents Root_NFS (0xff)
* 3) /dev/<disk_name> represents the device number of disk
* 4) /dev/<disk_name><decimal> represents the device number
* of partition - device number of disk plus the partition number
* 5) /dev/<disk_name>p<decimal> - same as the above, that form is
* used when disk name of partitioned disk ends on a digit.
*
* If name doesn't have fall into the categories above, we return 0.
* Driverfs is used to check if something is a disk name - it has
* all known disks under bus/block/devices. If the disk name
* contains slashes, name of driverfs node has them replaced with
* dots. try_name() does the actual checks, assuming that driverfs
* is mounted on rootfs /sys.
*/
dev_t name_to_dev_t(char *name)
{
char s[32];
char *p;
dev_t res = 0;
int part;
sys_mkdir("/sys", 0700);
if (sys_mount("sysfs", "/sys", "sysfs", 0, NULL) < 0)
goto out;
if (strncmp(name, "/dev/", 5) != 0) {
res = (dev_t) simple_strtoul(name, &p, 16);
if (*p)
goto fail;
goto done;
}
name += 5;
res = Root_NFS;
if (strcmp(name, "nfs") == 0)
goto done;
if (strlen(name) > 31)
goto fail;
strcpy(s, name);
for (p = s; *p; p++)
if (*p == '/')
*p = '.';
res = try_name(s, 0);
if (res)
goto done;
while (p > s && isdigit(p[-1]))
p--;
if (p == s || !*p || *p == '0')
goto fail;
part = simple_strtoul(p, NULL, 10);
*p = '\0';
res = try_name(s, part);
if (res)
goto done;
if (p < s + 2 || !isdigit(p[-2]) || p[-1] != 'p')
goto fail;
p[-1] = '\0';
res = try_name(s, part);
done:
sys_umount("/sys", 0);
out:
sys_rmdir("/sys");
return res;
fail:
res = (dev_t) 0;
goto done;
}
static int __init root_dev_setup(char *line)
{
strlcpy(saved_root_name, line, sizeof(saved_root_name));
return 1;
}
__setup("root=", root_dev_setup);
static char * __initdata root_mount_data;
static int __init root_data_setup(char *str)
{
root_mount_data = str;
return 1;
}
static char * __initdata root_fs_names;
static int __init fs_names_setup(char *str)
{
root_fs_names = str;
return 1;
}
__setup("rootflags=", root_data_setup);
__setup("rootfstype=", fs_names_setup);
static void __init get_fs_names(char *page)
{
char *s = page;
if (root_fs_names) {
strcpy(page, root_fs_names);
while (*s++) {
if (s[-1] == ',')
s[-1] = '\0';
}
} else {
int len = get_filesystem_list(page);
char *p, *next;
page[len] = '\0';
for (p = page-1; p; p = next) {
next = strchr(++p, '\n');
if (*p++ != '\t')
continue;
while ((*s++ = *p++) != '\n')
;
s[-1] = '\0';
}
}
*s = '\0';
}
static int __init do_mount_root(char *name, char *fs, int flags, void *data)
{
int err = sys_mount(name, "/root", fs, flags, data);
if (err)
return err;
sys_chdir("/root");
ROOT_DEV = current->fs->pwdmnt->mnt_sb->s_dev;
printk("VFS: Mounted root (%s filesystem)%s.\n",
current->fs->pwdmnt->mnt_sb->s_type->name,
current->fs->pwdmnt->mnt_sb->s_flags & MS_RDONLY ?
" readonly" : "");
return 0;
}
void __init mount_block_root(char *name, int flags)
{
char *fs_names = __getname();
char *p;
char b[BDEVNAME_SIZE];
get_fs_names(fs_names);
retry:
for (p = fs_names; *p; p += strlen(p)+1) {
int err = do_mount_root(name, p, flags, root_mount_data);
switch (err) {
case 0:
goto out;
case -EACCES:
flags |= MS_RDONLY;
goto retry;
case -EINVAL:
continue;
}
/*
* Allow the user to distinguish between failed open
* and bad superblock on root device.
*/
__bdevname(ROOT_DEV, b);
printk("VFS: Cannot open root device \"%s\" or %s\n",
root_device_name, b);
printk("Please append a correct \"root=\" boot option\n");
panic("VFS: Unable to mount root fs on %s", b);
}
panic("VFS: Unable to mount root fs on %s", __bdevname(ROOT_DEV, b));
out:
putname(fs_names);
}
#ifdef CONFIG_ROOT_NFS
static int __init mount_nfs_root(void)
{
void *data = nfs_root_data();
create_dev("/dev/root", ROOT_DEV, NULL);
if (data &&
do_mount_root("/dev/root", "nfs", root_mountflags, data) == 0)
return 1;
return 0;
}
#endif
#if defined(CONFIG_BLK_DEV_RAM) || defined(CONFIG_BLK_DEV_FD)
void __init change_floppy(char *fmt, ...)
{
struct termios termios;
char buf[80];
char c;
int fd;
va_list args;
va_start(args, fmt);
vsprintf(buf, fmt, args);
va_end(args);
fd = open("/dev/root", O_RDWR | O_NDELAY, 0);
if (fd >= 0) {
sys_ioctl(fd, FDEJECT, 0);
close(fd);
}
printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
fd = open("/dev/console", O_RDWR, 0);
if (fd >= 0) {
sys_ioctl(fd, TCGETS, (long)&termios);
termios.c_lflag &= ~ICANON;
sys_ioctl(fd, TCSETSF, (long)&termios);
read(fd, &c, 1);
termios.c_lflag |= ICANON;
sys_ioctl(fd, TCSETSF, (long)&termios);
close(fd);
}
}
#endif
void __init mount_root(void)
{
#ifdef CONFIG_ROOT_NFS
if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) {
if (mount_nfs_root())
return;
printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy.\n");
ROOT_DEV = Root_FD0;
}
#endif
#ifdef CONFIG_BLK_DEV_FD
if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) {
/* rd_doload is 2 for a dual initrd/ramload setup */
if (rd_doload==2) {
if (rd_load_disk(1)) {
ROOT_DEV = Root_RAM1;
root_device_name = NULL;
}
} else
change_floppy("root floppy");
}
#endif
create_dev("/dev/root", ROOT_DEV, root_device_name);
mount_block_root("/dev/root", root_mountflags);
}
/*
* Prepare the namespace - decide what/where to mount, load ramdisks, etc.
*/
void __init prepare_namespace(void)
{
int is_floppy;
mount_devfs();
md_run_setup();
if (saved_root_name[0]) {
root_device_name = saved_root_name;
ROOT_DEV = name_to_dev_t(root_device_name);
if (strncmp(root_device_name, "/dev/", 5) == 0)
root_device_name += 5;
}
is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR;
/* This has to be before mounting root, because even readonly mount of reiserfs would replay
log corrupting stuff */
software_resume();
if (initrd_load())
goto out;
if (is_floppy && rd_doload && rd_load_disk(0))
ROOT_DEV = Root_RAM0;
mount_root();
out:
umount_devfs("/dev");
sys_mount(".", "/", NULL, MS_MOVE, NULL);
sys_chroot(".");
security_sb_post_mountroot();
mount_devfs_fs ();
}
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2003-08-01 17:59 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-08-01 17:54 VFS: Cannot open root device "304" or hda4 jorge kernel
-- strict thread matches above, loose matches on Subject: below --
2003-08-01 17:59 jorge kernel
2003-08-01 15:05 kernel_286
2003-08-01 15:27 ` Cédric
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).