summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--fs/jffs2/dir.c12
-rw-r--r--fs/jffs2/fs.c25
-rw-r--r--fs/jffs2/gc.c7
-rw-r--r--fs/jffs2/nodelist.h11
-rw-r--r--fs/jffs2/os-linux.h4
-rw-r--r--include/linux/jffs2.h6
6 files changed, 43 insertions, 22 deletions
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 1c8e8c0..a6c11ce 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -591,12 +591,12 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
struct jffs2_full_dnode *fn;
struct jffs2_full_dirent *fd;
int namelen;
- jint16_t dev;
+ union jffs2_device_node dev;
int devlen = 0;
uint32_t alloclen, phys_ofs;
int ret;
- if (!old_valid_dev(rdev))
+ if (!new_valid_dev(rdev))
return -EINVAL;
ri = jffs2_alloc_raw_inode();
@@ -605,17 +605,15 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
c = JFFS2_SB_INFO(dir_i->i_sb);
- if (S_ISBLK(mode) || S_ISCHR(mode)) {
- dev = cpu_to_je16(old_encode_dev(rdev));
- devlen = sizeof(dev);
- }
+ if (S_ISBLK(mode) || S_ISCHR(mode))
+ devlen = jffs2_encode_dev(&dev, rdev);
/* Try to reserve enough space for both node and dirent.
* Just the node will do for now, though
*/
namelen = dentry->d_name.len;
ret = jffs2_reserve_space(c, sizeof(*ri) + devlen, &phys_ofs, &alloclen,
- ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
+ ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
if (ret) {
jffs2_free_raw_inode(ri);
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index ea1f37d..24cb4c6 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:
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 967fb2c..77d3070 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -679,7 +679,7 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
struct jffs2_full_dnode *new_fn;
struct jffs2_raw_inode ri;
struct jffs2_node_frag *last_frag;
- jint16_t dev;
+ union jffs2_device_node dev;
char *mdata = NULL, mdatalen = 0;
uint32_t alloclen, phys_ofs, ilen;
int ret;
@@ -687,11 +687,8 @@ static int jffs2_garbage_collect_metadata(struct jffs2_sb_info *c, struct jffs2_
if (S_ISBLK(JFFS2_F_I_MODE(f)) ||
S_ISCHR(JFFS2_F_I_MODE(f)) ) {
/* For these, we don't actually need to read the old node */
- /* FIXME: for minor or major > 255. */
- dev = cpu_to_je16(((JFFS2_F_I_RDEV_MAJ(f) << 8) |
- JFFS2_F_I_RDEV_MIN(f)));
+ mdatalen = jffs2_encode_dev(&dev, JFFS2_F_I_RDEV(f));
mdata = (char *)&dev;
- mdatalen = sizeof(dev);
D1(printk(KERN_DEBUG "jffs2_garbage_collect_metadata(): Writing %d bytes of kdev_t\n", mdatalen));
} else if (S_ISLNK(JFFS2_F_I_MODE(f))) {
mdatalen = fn->size;
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index f6645af..24e0f28 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -268,6 +268,17 @@ static inline uint32_t ref_totlen(struct jffs2_sb_info *c,
#define PAD(x) (((x)+3)&~3)
+static inline int jffs2_encode_dev(union jffs2_device_node *jdev, dev_t rdev)
+{
+ if (old_valid_dev(rdev)) {
+ jdev->old = cpu_to_je16(old_encode_dev(rdev));
+ return sizeof(jdev->old);
+ } else {
+ jdev->new = cpu_to_je32(new_encode_dev(rdev));
+ return sizeof(jdev->new);
+ }
+}
+
static inline struct jffs2_inode_cache *jffs2_raw_ref_to_ic(struct jffs2_raw_node_ref *raw)
{
while(raw->next_in_ino) {
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index d307cf5..a10eb03 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -31,9 +31,7 @@ struct kvec;
#define JFFS2_F_I_MODE(f) (OFNI_EDONI_2SFFJ(f)->i_mode)
#define JFFS2_F_I_UID(f) (OFNI_EDONI_2SFFJ(f)->i_uid)
#define JFFS2_F_I_GID(f) (OFNI_EDONI_2SFFJ(f)->i_gid)
-
-#define JFFS2_F_I_RDEV_MIN(f) (iminor(OFNI_EDONI_2SFFJ(f)))
-#define JFFS2_F_I_RDEV_MAJ(f) (imajor(OFNI_EDONI_2SFFJ(f)))
+#define JFFS2_F_I_RDEV(f) (OFNI_EDONI_2SFFJ(f)->i_rdev)
#define ITIME(sec) ((struct timespec){sec, 0})
#define I_SEC(tv) ((tv).tv_sec)
diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h
index a26fbd4..007d76d 100644
--- a/include/linux/jffs2.h
+++ b/include/linux/jffs2.h
@@ -173,4 +173,10 @@ union jffs2_node_union
struct jffs2_unknown_node u;
};
+/* Data payload for device nodes. */
+union jffs2_device_node {
+ jint16_t old;
+ jint32_t new;
+};
+
#endif /* __LINUX_JFFS2_H__ */
OpenPOWER on IntegriCloud