1 --- linux-2.4.17/kernel/ksyms.c.lustre Fri Feb 22 15:26:38 2002
2 +++ linux-2.4.17/kernel/ksyms.c Fri Feb 22 15:27:44 2002
4 EXPORT_SYMBOL(lock_may_write);
5 EXPORT_SYMBOL(dcache_readdir);
8 +EXPORT_SYMBOL(pagecache_lock);
9 +EXPORT_SYMBOL(do_kern_mount);
12 /* for stackable file systems (lofs, wrapfs, cryptfs, etc.) */
13 EXPORT_SYMBOL(default_llseek);
14 EXPORT_SYMBOL(dentry_open);
15 --- linux-2.4.17/include/linux/fs.h.lustre Fri Feb 22 15:27:53 2002
16 +++ linux-2.4.17/include/linux/fs.h Fri Feb 22 15:28:52 2002
18 extern struct vfsmount *kern_mount(struct file_system_type *);
19 extern int may_umount(struct vfsmount *);
20 extern long do_mount(char *, char *, char *, unsigned long, void *);
22 +struct vfsmount *do_kern_mount(char *type, int flags, char *name, void *data);
23 #define kern_umount mntput
25 extern int vfs_statfs(struct super_block *, struct statfs *);
26 --- linux-2.4.17/fs/ext3/Makefile.orig Fri Dec 21 10:41:55 2001
27 +++ linux-2.4.17/fs/ext3/Makefile Fri Mar 22 11:00:58 2002
29 # Note 2! The CFLAGS definitions are now in the main makefile...
33 +export-objs := super.o
35 obj-y := balloc.o bitmap.o dir.o file.o fsync.o ialloc.o inode.o \
36 ioctl.o namei.o super.o symlink.o
37 --- linux-2.4.17/fs/ext3/super.c.orig Fri Dec 21 10:41:55 2001
38 +++ linux-2.4.17/fs/ext3/super.c Fri Mar 22 11:00:41 2002
40 unregister_filesystem(&ext3_fs_type);
44 +EXPORT_SYMBOL(ext3_bread);
46 MODULE_AUTHOR("Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others");
47 MODULE_DESCRIPTION("Second Extended Filesystem with journaling extensions");
48 --- lum/include/linux/blkdev.h.orig Thu Mar 28 11:40:24 2002
49 +++ lum/include/linux/blkdev.h Thu Mar 28 23:38:46 2002
54 +#define CONFIG_DEV_RDONLY
55 +void dev_set_rdonly(kdev_t, int);
56 +int dev_check_rdonly(kdev_t);
57 +void dev_clear_rdonly(int);
59 --- lum/drivers/block/blkpg.c.orig Sun Nov 11 11:20:21 2001
60 +++ lum/drivers/block/blkpg.c Thu Mar 28 16:30:41 2002
64 EXPORT_SYMBOL(blk_ioctl);
66 +#define NUM_DEV_NO_WRITE 16
67 +static int dev_no_write[NUM_DEV_NO_WRITE];
70 + * Debug code for turning block devices "read-only" (will discard writes
71 + * silently). This is for filesystem crash/recovery testing.
73 +void dev_set_rdonly(kdev_t dev, int no_write)
76 + printk(KERN_WARNING "Turning device %s read-only\n",
78 + dev_no_write[no_write] = 0xdead0000 + dev;
82 +int dev_check_rdonly(kdev_t dev) {
85 + for (i = 0; i < NUM_DEV_NO_WRITE; i++) {
86 + if ((dev_no_write[i] & 0xffff0000) == 0xdead0000 &&
87 + dev == (dev_no_write[i] & 0xffff))
93 +void dev_clear_rdonly(int no_write) {
94 + dev_no_write[no_write] = 0;
97 +EXPORT_SYMBOL(dev_set_rdonly);
98 +EXPORT_SYMBOL(dev_check_rdonly);
99 +EXPORT_SYMBOL(dev_clear_rdonly);
100 --- lum/drivers/block/loop.c.orig Fri Dec 21 10:41:53 2001
101 +++ lum/drivers/block/loop.c Thu Mar 28 23:39:25 2002
103 spin_unlock_irq(&lo->lo_lock);
106 +#ifdef CONFIG_DEV_RDONLY
107 + if (dev_check_rdonly(rbh->b_rdev))
111 if (lo->lo_flags & LO_FLAGS_READ_ONLY)
113 } else if (rw == READA) {
114 --- lum/drivers/ide/ide-disk.c.orig Fri Dec 21 10:41:54 2001
115 +++ lum/drivers/ide/ide-disk.c Thu Mar 28 23:38:41 2002
118 static ide_startstop_t do_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
120 +#ifdef CONFIG_DEV_RDONLY
121 + if (rq->cmd == WRITE && dev_check_rdonly(rq->rq_dev)) {
122 + ide_end_request(1, HWGROUP(drive));
123 + return ide_stopped;
127 OUT_BYTE(drive->ctl,IDE_CONTROL_REG);
128 OUT_BYTE(0x00, IDE_FEATURE_REG);
129 --- lum/arch/um/drivers/ubd.c.orig Wed Mar 13 14:04:59 2002
130 +++ lum/arch/um/drivers/ubd.c Thu Mar 28 23:39:15 2002
131 @@ -693,14 +697,23 @@
132 spin_unlock(&io_request_lock);
135 - if((req->cmd == WRITE) &&
136 - ((dev->openflags & O_ACCMODE) == O_RDONLY)){
137 - printk("Write attempted on readonly ubd device %d\n",
138 - minor(req->rq_dev));
139 - spin_lock(&io_request_lock);
141 - spin_unlock(&io_request_lock);
143 + if (req->cmd == WRITE) {
144 +#ifdef CONFIG_DEV_RDONLY
145 + if (dev_check_rdonly(req->rq_dev)) {
146 + spin_lock(&io_request_lock);
148 + spin_unlock(&io_request_lock);
152 + if ((dev->openflags & O_ACCMODE) == O_RDONLY) {
153 + printk("Write attempted on readonly ubd device %d\n",
154 + minor(req->rq_dev));
155 + spin_lock(&io_request_lock);
157 + spin_unlock(&io_request_lock);