diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext2/super.c | 39 | ||||
| -rw-r--r-- | fs/ext3/inode.c | 2 | ||||
| -rw-r--r-- | fs/ext3/super.c | 42 | ||||
| -rw-r--r-- | fs/jffs2/summary.c | 5 |
4 files changed, 87 insertions, 1 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 681dea8f953..ca5bfb6914d 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -251,6 +251,44 @@ static struct super_operations ext2_sops = { #endif }; +static struct dentry *ext2_get_dentry(struct super_block *sb, void *vobjp) +{ + __u32 *objp = vobjp; + unsigned long ino = objp[0]; + __u32 generation = objp[1]; + struct inode *inode; + struct dentry *result; + + if (ino < EXT2_FIRST_INO(sb) && ino != EXT2_ROOT_INO) + return ERR_PTR(-ESTALE); + if (ino > le32_to_cpu(EXT2_SB(sb)->s_es->s_inodes_count)) + return ERR_PTR(-ESTALE); + + /* iget isn't really right if the inode is currently unallocated!! + * ext2_read_inode currently does appropriate checks, but + * it might be "neater" to call ext2_get_inode first and check + * if the inode is valid..... + */ + inode = iget(sb, ino); + if (inode == NULL) + return ERR_PTR(-ENOMEM); + if (is_bad_inode(inode) || + (generation && inode->i_generation != generation)) { + /* we didn't find the right inode.. */ + iput(inode); + return ERR_PTR(-ESTALE); + } + /* now to find a dentry. + * If possible, get a well-connected one + */ + result = d_alloc_anon(inode); + if (!result) { + iput(inode); + return ERR_PTR(-ENOMEM); + } + return result; +} + /* Yes, most of these are left as NULL!! * A NULL value implies the default, which works with ext2-like file * systems, but can be improved upon. @@ -258,6 +296,7 @@ static struct super_operations ext2_sops = { */ static struct export_operations ext2_export_ops = { .get_parent = ext2_get_parent, + .get_dentry = ext2_get_dentry, }; static unsigned long get_sb_block(void **data) diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index 0f0b1eadb98..84be02e9365 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -925,7 +925,7 @@ int ext3_get_blocks_handle(handle_t *handle, struct inode *inode, set_buffer_new(bh_result); got_it: map_bh(bh_result, inode->i_sb, le32_to_cpu(chain[depth-1].key)); - if (blocks_to_boundary == 0) + if (count > blocks_to_boundary) set_buffer_boundary(bh_result); err = count; /* Clean up and exit */ diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 813d589cc6c..3559086eee5 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -554,6 +554,47 @@ static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs) return 0; } + +static struct dentry *ext3_get_dentry(struct super_block *sb, void *vobjp) +{ + __u32 *objp = vobjp; + unsigned long ino = objp[0]; + __u32 generation = objp[1]; + struct inode *inode; + struct dentry *result; + + if (ino < EXT3_FIRST_INO(sb) && ino != EXT3_ROOT_INO) + return ERR_PTR(-ESTALE); + if (ino > le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count)) + return ERR_PTR(-ESTALE); + + /* iget isn't really right if the inode is currently unallocated!! + * + * ext3_read_inode will return a bad_inode if the inode had been + * deleted, so we should be safe. + * + * Currently we don't know the generation for parent directory, so + * a generation of 0 means "accept any" + */ + inode = iget(sb, ino); + if (inode == NULL) + return ERR_PTR(-ENOMEM); + if (is_bad_inode(inode) || + (generation && inode->i_generation != generation)) { + iput(inode); + return ERR_PTR(-ESTALE); + } + /* now to find a dentry. + * If possible, get a well-connected one + */ + result = d_alloc_anon(inode); + if (!result) { + iput(inode); + return ERR_PTR(-ENOMEM); + } + return result; +} + #ifdef CONFIG_QUOTA #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group") #define QTYPE2MOPT(on, t) ((t)==USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA)) @@ -622,6 +663,7 @@ static struct super_operations ext3_sops = { static struct export_operations ext3_export_ops = { .get_parent = ext3_get_parent, + .get_dentry = ext3_get_dentry, }; enum { diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index c19bd476e8e..e52cef526d9 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -252,6 +252,11 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs, union jffs2_node_union *node; struct jffs2_eraseblock *jeb; + if (c->summary->sum_size == JFFS2_SUMMARY_NOSUM_SIZE) { + dbg_summary("Summary is disabled for this jeb! Skipping summary info!\n"); + return 0; + } + node = invecs[0].iov_base; jeb = &c->blocks[ofs / c->sector_size]; ofs -= jeb->offset; |