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Diffstat (limited to 'fs/jffs2/fs.c')
-rw-r--r--fs/jffs2/fs.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index ea1f37d4fc58..24cb4c688efc 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -33,7 +33,7 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
struct jffs2_raw_inode *ri;
- unsigned short dev;
+ union jffs2_device_node dev;
unsigned char *mdata = NULL;
int mdatalen = 0;
unsigned int ivalid;
@@ -51,9 +51,8 @@ static int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
it out again with the appropriate data attached */
if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) {
/* For these, we don't actually need to read the old node */
- dev = old_encode_dev(inode->i_rdev);
+ mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
mdata = (char *)&dev;
- mdatalen = sizeof(dev);
D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
} else if (S_ISLNK(inode->i_mode)) {
down(&f->sem);
@@ -232,6 +231,8 @@ void jffs2_read_inode (struct inode *inode)
struct jffs2_inode_info *f;
struct jffs2_sb_info *c;
struct jffs2_raw_inode latest_node;
+ union jffs2_device_node jdev;
+ dev_t rdev = 0;
int ret;
D1(printk(KERN_DEBUG "jffs2_read_inode(): inode->i_ino == %lu\n", inode->i_ino));
@@ -263,7 +264,6 @@ void jffs2_read_inode (struct inode *inode)
inode->i_blocks = (inode->i_size + 511) >> 9;
switch (inode->i_mode & S_IFMT) {
- jint16_t rdev;
case S_IFLNK:
inode->i_op = &jffs2_symlink_inode_operations;
@@ -297,8 +297,16 @@ void jffs2_read_inode (struct inode *inode)
case S_IFBLK:
case S_IFCHR:
/* Read the device numbers from the media */
+ if (f->metadata->size != sizeof(jdev.old) &&
+ f->metadata->size != sizeof(jdev.new)) {
+ printk(KERN_NOTICE "Device node has strange size %d\n", f->metadata->size);
+ up(&f->sem);
+ jffs2_do_clear_inode(c, f);
+ make_bad_inode(inode);
+ return;
+ }
D1(printk(KERN_DEBUG "Reading device numbers from flash\n"));
- if (jffs2_read_dnode(c, f, f->metadata, (char *)&rdev, 0, sizeof(rdev)) < 0) {
+ if (jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size) < 0) {
/* Eep */
printk(KERN_NOTICE "Read device numbers for inode %lu failed\n", (unsigned long)inode->i_ino);
up(&f->sem);
@@ -306,12 +314,15 @@ void jffs2_read_inode (struct inode *inode)
make_bad_inode(inode);
return;
}
+ if (f->metadata->size == sizeof(jdev.old))
+ rdev = old_decode_dev(je16_to_cpu(jdev.old));
+ else
+ rdev = new_decode_dev(je32_to_cpu(jdev.new));
case S_IFSOCK:
case S_IFIFO:
inode->i_op = &jffs2_file_inode_operations;
- init_special_inode(inode, inode->i_mode,
- old_decode_dev((je16_to_cpu(rdev))));
+ init_special_inode(inode, inode->i_mode, rdev);
break;
default: