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UBIFS: endian handling fixes and annotations 

Noticed by sparse:
fs/ubifs/file.c:75:2: warning: restricted __le64 degrades to integer
fs/ubifs/file.c:629:4: warning: restricted __le64 degrades to integer
fs/ubifs/dir.c:431:3: warning: restricted __le64 degrades to integer

This should be checked to ensure the ubifs_assert is working as
intended, I've done the suggested annotation in this patch.

fs/ubifs/sb.c:298:6: warning: incorrect type in assignment (different base types)
fs/ubifs/sb.c:298:6:    expected int [signed] [assigned] tmp
fs/ubifs/sb.c:298:6:    got restricted __le64 [usertype] <noident>
fs/ubifs/sb.c:299:19: warning: incorrect type in assignment (different base types)
fs/ubifs/sb.c:299:19:    expected restricted __le64 [usertype] atime_sec
fs/ubifs/sb.c:299:19:    got int [signed] [assigned] tmp
fs/ubifs/sb.c:300:19: warning: incorrect type in assignment (different base types)
fs/ubifs/sb.c:300:19:    expected restricted __le64 [usertype] ctime_sec
fs/ubifs/sb.c:300:19:    got int [signed] [assigned] tmp
fs/ubifs/sb.c:301:19: warning: incorrect type in assignment (different base types)
fs/ubifs/sb.c:301:19:    expected restricted __le64 [usertype] mtime_sec
fs/ubifs/sb.c:301:19:    got int [signed] [assigned] tmp

This looks like a bugfix as your tmp was a u32 so there was truncation in
the atime, mtime, ctime value, probably not intentional, add a tmp_le64
and use it here.

fs/ubifs/key.h:348:9: warning: cast to restricted __le32
fs/ubifs/key.h:348:9: warning: cast to restricted __le32
fs/ubifs/key.h:419:9: warning: cast to restricted __le32

Read from the annotated union member instead.

fs/ubifs/recovery.c:175:13: warning: incorrect type in assignment (different base types)
fs/ubifs/recovery.c:175:13:    expected unsigned int [unsigned] [usertype] save_flags
fs/ubifs/recovery.c:175:13:    got restricted __le32 [usertype] flags
fs/ubifs/recovery.c:186:13: warning: incorrect type in assignment (different base types)
fs/ubifs/recovery.c:186:13:    expected restricted __le32 [usertype] flags
fs/ubifs/recovery.c:186:13:    got unsigned int [unsigned] [usertype] save_flags

Do byteshifting at compile time of the flag value.  Annotate the saved_flags
as le32.

fs/ubifs/debug.c:368:10: warning: cast to restricted __le32
fs/ubifs/debug.c:368:10: warning: cast from restricted __le64

Should be checked if the truncation was intentional, I've changed the
printk to print the full width.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Harvey Harrison 2008-10-24 10:52:57 -07:00 committed by Artem Bityutskiy
parent 069782a1ee
commit 0ecb9529a4
6 changed files with 15 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/ubifs/debug.c
View File

@ -364,8 +364,8 @@ void dbg_dump_node(const struct ubifs_info *c, const void *node)
le32_to_cpu(mst->ihead_lnum));
printk(KERN_DEBUG "\tihead_offs %u\n",
le32_to_cpu(mst->ihead_offs));
printk(KERN_DEBUG "\tindex_size %u\n",
le32_to_cpu(mst->index_size));
printk(KERN_DEBUG "\tindex_size %llu\n",
(unsigned long long)le64_to_cpu(mst->index_size));
printk(KERN_DEBUG "\tlpt_lnum %u\n",
le32_to_cpu(mst->lpt_lnum));
printk(KERN_DEBUG "\tlpt_offs %u\n",

3
fs/ubifs/dir.c
View File

@ -428,7 +428,8 @@ static int ubifs_readdir(struct file *file, void *dirent, filldir_t filldir)
dbg_gen("feed '%s', ino %llu, new f_pos %#x",
dent->name, (unsigned long long)le64_to_cpu(dent->inum),
key_hash_flash(c, &dent->key));
ubifs_assert(dent->ch.sqnum > ubifs_inode(dir)->creat_sqnum);
ubifs_assert(le64_to_cpu(dent->ch.sqnum) >
ubifs_inode(dir)->creat_sqnum);
nm.len = le16_to_cpu(dent->nlen);
over = filldir(dirent, dent->name, nm.len, file->f_pos,

4
fs/ubifs/file.c
View File

@ -72,7 +72,7 @@ static int read_block(struct inode *inode, void *addr, unsigned int block,
return err;
}
ubifs_assert(dn->ch.sqnum > ubifs_inode(inode)->creat_sqnum);
ubifs_assert(le64_to_cpu(dn->ch.sqnum) > ubifs_inode(inode)->creat_sqnum);
len = le32_to_cpu(dn->size);
if (len <= 0 || len > UBIFS_BLOCK_SIZE)
@ -626,7 +626,7 @@ static int populate_page(struct ubifs_info *c, struct page *page,
dn = bu->buf + (bu->zbranch[nn].offs - offs);
ubifs_assert(dn->ch.sqnum >
ubifs_assert(le64_to_cpu(dn->ch.sqnum) >
ubifs_inode(inode)->creat_sqnum);
len = le32_to_cpu(dn->size);

4
fs/ubifs/key.h
View File

@ -345,7 +345,7 @@ static inline int key_type_flash(const struct ubifs_info *c, const void *k)
{
const union ubifs_key *key = k;
return le32_to_cpu(key->u32[1]) >> UBIFS_S_KEY_BLOCK_BITS;
return le32_to_cpu(key->j32[1]) >> UBIFS_S_KEY_BLOCK_BITS;
}
/**
@ -416,7 +416,7 @@ static inline unsigned int key_block_flash(const struct ubifs_info *c,
{
const union ubifs_key *key = k;
return le32_to_cpu(key->u32[1]) & UBIFS_S_KEY_BLOCK_MASK;
return le32_to_cpu(key->j32[1]) & UBIFS_S_KEY_BLOCK_MASK;
}
/**

4
fs/ubifs/recovery.c
View File

@ -168,12 +168,12 @@ static int write_rcvrd_mst_node(struct ubifs_info *c,
struct ubifs_mst_node *mst)
{
int err = 0, lnum = UBIFS_MST_LNUM, sz = c->mst_node_alsz;
uint32_t save_flags;
__le32 save_flags;
dbg_rcvry("recovery");
save_flags = mst->flags;
mst->flags = cpu_to_le32(le32_to_cpu(mst->flags) | UBIFS_MST_RCVRY);
mst->flags |= cpu_to_le32(UBIFS_MST_RCVRY);
ubifs_prepare_node(c, mst, UBIFS_MST_NODE_SZ, 1);
err = ubi_leb_change(c->ubi, lnum, mst, sz, UBI_SHORTTERM);

9
fs/ubifs/sb.c
View File

@ -81,6 +81,7 @@ static int create_default_filesystem(struct ubifs_info *c)
int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0;
int min_leb_cnt = UBIFS_MIN_LEB_CNT;
uint64_t tmp64, main_bytes;
__le64 tmp_le64;
/* Some functions called from here depend on the @c->key_len filed */
c->key_len = UBIFS_SK_LEN;
@ -295,10 +296,10 @@ static int create_default_filesystem(struct ubifs_info *c)
ino->ch.node_type = UBIFS_INO_NODE;
ino->creat_sqnum = cpu_to_le64(++c->max_sqnum);
ino->nlink = cpu_to_le32(2);
tmp = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
ino->atime_sec = tmp;
ino->ctime_sec = tmp;
ino->mtime_sec = tmp;
tmp_le64 = cpu_to_le64(CURRENT_TIME_SEC.tv_sec);
ino->atime_sec = tmp_le64;
ino->ctime_sec = tmp_le64;
ino->mtime_sec = tmp_le64;
ino->atime_nsec = 0;
ino->ctime_nsec = 0;
ino->mtime_nsec = 0;