diff options
Diffstat (limited to 'fs/9p/vfs_inode.c')
-rw-r--r-- | fs/9p/vfs_inode.c | 121 |
1 files changed, 75 insertions, 46 deletions
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index a0d65a398729..445dd283dc15 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -243,26 +243,10 @@ void v9fs_destroy_inode(struct inode *inode) } #endif -/** - * v9fs_get_inode - helper function to setup an inode - * @sb: superblock - * @mode: mode to setup inode with - * - */ - -struct inode *v9fs_get_inode(struct super_block *sb, int mode) +int v9fs_init_inode(struct v9fs_session_info *v9ses, + struct inode *inode, int mode) { - int err; - struct inode *inode; - struct v9fs_session_info *v9ses = sb->s_fs_info; - - P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); - - inode = new_inode(sb); - if (!inode) { - P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); - return ERR_PTR(-ENOMEM); - } + int err = 0; inode_init_owner(inode, NULL, mode); inode->i_blocks = 0; @@ -306,7 +290,6 @@ struct inode *v9fs_get_inode(struct super_block *sb, int mode) } break; - case S_IFLNK: if (!v9fs_proto_dotu(v9ses) && !v9fs_proto_dotl(v9ses)) { P9_DPRINTK(P9_DEBUG_ERROR, "extended modes used with " @@ -342,12 +325,37 @@ struct inode *v9fs_get_inode(struct super_block *sb, int mode) err = -EINVAL; goto error; } +error: + return err; - return inode; +} -error: - iput(inode); - return ERR_PTR(err); +/** + * v9fs_get_inode - helper function to setup an inode + * @sb: superblock + * @mode: mode to setup inode with + * + */ + +struct inode *v9fs_get_inode(struct super_block *sb, int mode) +{ + int err; + struct inode *inode; + struct v9fs_session_info *v9ses = sb->s_fs_info; + + P9_DPRINTK(P9_DEBUG_VFS, "super block: %p mode: %o\n", sb, mode); + + inode = new_inode(sb); + if (!inode) { + P9_EPRINTK(KERN_WARNING, "Problem allocating inode\n"); + return ERR_PTR(-ENOMEM); + } + err = v9fs_init_inode(v9ses, inode, mode); + if (err) { + iput(inode); + return ERR_PTR(err); + } + return inode; } /* @@ -424,39 +432,60 @@ void v9fs_evict_inode(struct inode *inode) } } -struct inode * -v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, - struct super_block *sb) +static struct inode *v9fs_qid_iget(struct super_block *sb, + struct p9_qid *qid, + struct p9_wstat *st) { - int err, umode; - struct inode *ret = NULL; - struct p9_wstat *st; - - st = p9_client_stat(fid); - if (IS_ERR(st)) - return ERR_CAST(st); + int retval, umode; + unsigned long i_ino; + struct inode *inode; + struct v9fs_session_info *v9ses = sb->s_fs_info; + i_ino = v9fs_qid2ino(qid); + inode = iget_locked(sb, i_ino); + if (!inode) + return ERR_PTR(-ENOMEM); + if (!(inode->i_state & I_NEW)) + return inode; + /* + * initialize the inode with the stat info + * FIXME!! we may need support for stale inodes + * later. + */ umode = p9mode2unixmode(v9ses, st->mode); - ret = v9fs_get_inode(sb, umode); - if (IS_ERR(ret)) { - err = PTR_ERR(ret); + retval = v9fs_init_inode(v9ses, inode, umode); + if (retval) goto error; - } - - v9fs_stat2inode(st, ret, sb); - ret->i_ino = v9fs_qid2ino(&st->qid); + v9fs_stat2inode(st, inode, sb); #ifdef CONFIG_9P_FSCACHE v9fs_vcookie_set_qid(ret, &st->qid); - v9fs_cache_inode_get_cookie(ret); + v9fs_cache_inode_get_cookie(inode); #endif - p9stat_free(st); - kfree(st); - return ret; + unlock_new_inode(inode); + return inode; error: + unlock_new_inode(inode); + iput(inode); + return ERR_PTR(retval); + +} + +struct inode * +v9fs_inode(struct v9fs_session_info *v9ses, struct p9_fid *fid, + struct super_block *sb) +{ + struct p9_wstat *st; + struct inode *inode = NULL; + + st = p9_client_stat(fid); + if (IS_ERR(st)) + return ERR_CAST(st); + + inode = v9fs_qid_iget(sb, &st->qid, st); p9stat_free(st); kfree(st); - return ERR_PTR(err); + return inode; } /** |