From 0ecb9529a4d47825778e7b0d226eb36019252a9d Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Fri, 24 Oct 2008 10:52:57 -0700 Subject: [PATCH] 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] 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 Signed-off-by: Artem Bityutskiy --- fs/ubifs/debug.c | 4 ++-- fs/ubifs/dir.c | 3 ++- fs/ubifs/file.c | 4 ++-- fs/ubifs/key.h | 4 ++-- fs/ubifs/recovery.c | 4 ++-- fs/ubifs/sb.c | 9 +++++---- 6 files changed, 15 insertions(+), 13 deletions(-) diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 7186400750e7..f9deccbc90c0 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -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", diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c index 526c01ec8003..37a9e604c3e9 100644 --- a/fs/ubifs/dir.c +++ b/fs/ubifs/dir.c @@ -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, diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 51cf511d44d9..9124eee73aea 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -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); diff --git a/fs/ubifs/key.h b/fs/ubifs/key.h index 9ee65086f627..3f1f16bc25c9 100644 --- a/fs/ubifs/key.h +++ b/fs/ubifs/key.h @@ -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; } /** diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c index 77d26c141cf6..bed97421b972 100644 --- a/fs/ubifs/recovery.c +++ b/fs/ubifs/recovery.c @@ -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); diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c index 2bf753b38889..0f392351dc5a 100644 --- a/fs/ubifs/sb.c +++ b/fs/ubifs/sb.c @@ -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; -- GitLab