From patchwork Tue Sep 7 10:28:23 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 160261 X-Patchwork-Delegate: ericvh@gmail.com Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o87ATHJE028401 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 7 Sep 2010 10:29:55 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-3.v29.ch3.sourceforge.com) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1OsvQD-0007mW-7Y; Tue, 07 Sep 2010 10:29:01 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1OsvQB-0007mM-HA for v9fs-developer@lists.sourceforge.net; Tue, 07 Sep 2010 10:28:59 +0000 X-ACL-Warn: Received: from e28smtp01.in.ibm.com ([122.248.162.1]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69) id 1OsvQ5-0005Co-PO for v9fs-developer@lists.sourceforge.net; Tue, 07 Sep 2010 10:28:59 +0000 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by e28smtp01.in.ibm.com (8.14.4/8.13.1) with ESMTP id o87ASjbP002306 for ; Tue, 7 Sep 2010 15:58:45 +0530 Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o87ASjY32183368 for ; Tue, 7 Sep 2010 15:58:45 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o87ASiH9020115 for ; Tue, 7 Sep 2010 15:58:44 +0530 Received: from localhost.localdomain ([9.77.212.73]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id o87ASWNm019198; Tue, 7 Sep 2010 15:58:43 +0530 From: "Aneesh Kumar K.V" To: v9fs-developer@lists.sourceforge.net Date: Tue, 7 Sep 2010 15:58:23 +0530 Message-Id: <1283855304-22472-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1283855304-22472-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1283855304-22472-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Spam-Score: -0.1 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_FILL_THIS_FORM_SHORT Fill in a short form with personal information -0.1 AWL AWL: From: address is in the auto white-list X-Headers-End: 1OsvQ5-0005Co-PO Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [V9fs-developer] [PATCH -V3 5/6] fs/9p: Implement create time inheritance X-BeenThere: v9fs-developer@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: v9fs-developer-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Tue, 07 Sep 2010 10:29:56 +0000 (UTC) diff --git a/fs/9p/acl.c b/fs/9p/acl.c index 203da2b..1c50a9f 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -152,6 +152,58 @@ int v9fs_acl_chmod(struct dentry *dentry) return retval; } +int v9fs_set_create_acl(struct dentry *dentry, + struct posix_acl *dpacl, struct posix_acl *pacl) +{ + if (dpacl) + v9fs_set_acl(dentry, ACL_TYPE_DEFAULT, dpacl); + if (pacl) + v9fs_set_acl(dentry, ACL_TYPE_ACCESS, pacl); + posix_acl_release(dpacl); + posix_acl_release(pacl); + return 0; +} + +int v9fs_acl_mode(struct inode *dir, mode_t *modep, + struct posix_acl **dpacl, struct posix_acl **pacl) +{ + int retval = 0; + mode_t mode = *modep; + struct posix_acl *acl = NULL; + + if (!S_ISLNK(mode)) { + acl = v9fs_get_cached_acl(dir, ACL_TYPE_DEFAULT); + if (IS_ERR(acl)) + return PTR_ERR(acl); + if (!acl) + mode &= ~current_umask(); + } + if (acl) { + struct posix_acl *clone; + + if (S_ISDIR(mode)) + *dpacl = acl; + clone = posix_acl_clone(acl, GFP_NOFS); + retval = -ENOMEM; + if (!clone) + goto cleanup; + + retval = posix_acl_create_masq(clone, &mode); + if (retval < 0) { + posix_acl_release(clone); + goto cleanup; + } + if (retval > 0) + *pacl = clone; + } + *modep = mode; + return 0; +cleanup: + posix_acl_release(acl); + return retval; + +} + static int v9fs_xattr_get_acl(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { diff --git a/fs/9p/acl.h b/fs/9p/acl.h index 0adcc43..59e18c2 100644 --- a/fs/9p/acl.h +++ b/fs/9p/acl.h @@ -18,6 +18,10 @@ extern int v9fs_get_acl(struct inode *, struct p9_fid *); extern int v9fs_check_acl(struct inode *inode, int mask); extern int v9fs_acl_chmod(struct dentry *); +extern int v9fs_set_create_acl(struct dentry *, + struct posix_acl *, struct posix_acl *); +extern int v9fs_acl_mode(struct inode *dir, mode_t *modep, + struct posix_acl **dpacl, struct posix_acl **pacl); #else #define v9fs_check_acl NULL static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid) @@ -28,5 +32,18 @@ static inline int v9fs_acl_chmod(struct dentry *dentry) { return 0; } +static inline int v9fs_set_create_acl(struct dentry *dentry, + struct posix_acl *dpacl, + struct posix_acl *pacl) +{ + return 0; +} +static inline int v9fs_acl_mode(struct inode *dir, mode_t *modep, + struct posix_acl **dpacl, + struct posix_acl **pacl) +{ + return 0; +} + #endif #endif /* FS_9P_XATTR_H */ diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 7983698..2f904a8 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -662,19 +662,21 @@ error: */ static int -v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int mode, +v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int omode, struct nameidata *nd) { int err = 0; char *name = NULL; gid_t gid; int flags; + mode_t mode; struct v9fs_session_info *v9ses; struct p9_fid *fid = NULL; struct p9_fid *dfid, *ofid; struct file *filp; struct p9_qid qid; struct inode *inode; + struct posix_acl *pacl = NULL, *dacl = NULL; v9ses = v9fs_inode2v9ses(dir); if (nd && nd->flags & LOOKUP_OPEN) @@ -684,7 +686,7 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int mode, name = (char *) dentry->d_name.name; P9_DPRINTK(P9_DEBUG_VFS, "v9fs_vfs_create_dotl: name:%s flags:0x%x " - "mode:0x%x\n", name, flags, mode); + "mode:0x%x\n", name, flags, omode); dfid = v9fs_fid_lookup(dentry->d_parent); if (IS_ERR(dfid)) { @@ -702,6 +704,15 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int mode, } gid = v9fs_get_fsgid_for_create(dir); + + mode = omode; + /* Update mode based on ACL value */ + err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); + if (err) { + P9_DPRINTK(P9_DEBUG_VFS, + "Failed to get acl values in creat %d\n", err); + goto error; + } err = p9_client_create_dotl(ofid, name, flags, mode, gid, &qid); if (err < 0) { P9_DPRINTK(P9_DEBUG_VFS, @@ -709,42 +720,48 @@ v9fs_vfs_create_dotl(struct inode *dir, struct dentry *dentry, int mode, err); goto error; } + /* instantiate inode and assign the unopened fid to the dentry */ + if (v9ses->cache == CACHE_LOOSE || v9ses->cache == CACHE_FSCACHE || + (nd && nd->flags & LOOKUP_OPEN)) { + fid = p9_client_walk(dfid, 1, &name, 1); + if (IS_ERR(fid)) { + err = PTR_ERR(fid); + P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", + err); + fid = NULL; + goto error; + } - /* No need to populate the inode if we are not opening the file AND - * not in cached mode. - */ - if (!v9ses->cache && !(nd && nd->flags & LOOKUP_OPEN)) { - /* Not in cached mode. No need to populate inode with stat */ - dentry->d_op = &v9fs_dentry_operations; - p9_client_clunk(ofid); - d_instantiate(dentry, NULL); - return 0; - } - - /* Now walk from the parent so we can get an unopened fid. */ - fid = p9_client_walk(dfid, 1, &name, 1); - if (IS_ERR(fid)) { - err = PTR_ERR(fid); - P9_DPRINTK(P9_DEBUG_VFS, "p9_client_walk failed %d\n", err); - fid = NULL; - goto error; - } - - /* instantiate inode and assign the unopened fid to dentry */ - inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); - if (IS_ERR(inode)) { - err = PTR_ERR(inode); - P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", err); - goto error; - } - if (v9ses->cache) + inode = v9fs_inode_from_fid(v9ses, fid, dir->i_sb); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + P9_DPRINTK(P9_DEBUG_VFS, "inode creation failed %d\n", + err); + goto error; + } dentry->d_op = &v9fs_cached_dentry_operations; - else + d_instantiate(dentry, inode); + err = v9fs_fid_add(dentry, fid); + if (err < 0) + goto error; + /* The fid would get clunked via a dput */ + fid = NULL; + } else { + /* + * Not in cached mode. No need to populate + * inode with stat. We need to get an inode + * so that we can set the acl with dentry + */ + inode = v9fs_get_inode(dir->i_sb, mode); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto error; + } dentry->d_op = &v9fs_dentry_operations; - d_instantiate(dentry, inode); - err = v9fs_fid_add(dentry, fid); - if (err < 0) - goto error; + d_instantiate(dentry, inode); + } + /* Now set the ACL based on the default value */ + v9fs_set_create_acl(dentry, dacl, pacl); /* if we are opening a file, assign the open fid to the file */ if (nd && nd->flags & LOOKUP_OPEN) { @@ -866,25 +883,28 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, int mode) * */ -static int v9fs_vfs_mkdir_dotl(struct inode *dir, struct dentry *dentry, - int mode) +static int v9fs_vfs_mkdir_dotl(struct inode *dir, + struct dentry *dentry, int omode) { int err; struct v9fs_session_info *v9ses; struct p9_fid *fid = NULL, *dfid = NULL; gid_t gid; char *name; + mode_t mode; struct inode *inode; struct p9_qid qid; struct dentry *dir_dentry; + struct posix_acl *dacl = NULL, *pacl = NULL; P9_DPRINTK(P9_DEBUG_VFS, "name %s\n", dentry->d_name.name); err = 0; v9ses = v9fs_inode2v9ses(dir); - mode |= S_IFDIR; + omode |= S_IFDIR; if (dir->i_mode & S_ISGID) - mode |= S_ISGID; + omode |= S_ISGID; + dir_dentry = v9fs_dentry_from_dir_inode(dir); dfid = v9fs_fid_lookup(dir_dentry); if (IS_ERR(dfid)) { @@ -895,7 +915,14 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, struct dentry *dentry, } gid = v9fs_get_fsgid_for_create(dir); - + mode = omode; + /* Update mode based on ACL value */ + err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); + if (err) { + P9_DPRINTK(P9_DEBUG_VFS, + "Failed to get acl values in mkdir %d\n", err); + goto error; + } name = (char *) dentry->d_name.name; err = p9_client_mkdir_dotl(dfid, name, mode, gid, &qid); if (err < 0) @@ -925,7 +952,23 @@ static int v9fs_vfs_mkdir_dotl(struct inode *dir, struct dentry *dentry, if (err < 0) goto error; fid = NULL; + } else { + /* + * Not in cached mode. No need to populate + * inode with stat. We need to get an inode + * so that we can set the acl with dentry + */ + inode = v9fs_get_inode(dir->i_sb, mode); + if (IS_ERR(inode)) { + err = PTR_ERR(inode); + goto error; + } + dentry->d_op = &v9fs_dentry_operations; + d_instantiate(dentry, inode); } + /* Now set the ACL based on the default value */ + v9fs_set_create_acl(dentry, dacl, pacl); + error: if (fid) p9_client_clunk(fid); @@ -1860,21 +1903,23 @@ v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev) * */ static int -v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int mode, +v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int omode, dev_t rdev) { int err; char *name; + mode_t mode; struct v9fs_session_info *v9ses; struct p9_fid *fid = NULL, *dfid = NULL; struct inode *inode; gid_t gid; struct p9_qid qid; struct dentry *dir_dentry; + struct posix_acl *dacl = NULL, *pacl = NULL; P9_DPRINTK(P9_DEBUG_VFS, " %lu,%s mode: %x MAJOR: %u MINOR: %u\n", dir->i_ino, - dentry->d_name.name, mode, MAJOR(rdev), MINOR(rdev)); + dentry->d_name.name, omode, MAJOR(rdev), MINOR(rdev)); if (!new_valid_dev(rdev)) return -EINVAL; @@ -1890,7 +1935,14 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int mode, } gid = v9fs_get_fsgid_for_create(dir); - + mode = omode; + /* Update mode based on ACL value */ + err = v9fs_acl_mode(dir, &mode, &dacl, &pacl); + if (err) { + P9_DPRINTK(P9_DEBUG_VFS, + "Failed to get acl values in mknod %d\n", err); + goto error; + } name = (char *) dentry->d_name.name; err = p9_client_mknod_dotl(dfid, name, mode, rdev, gid, &qid); @@ -1934,7 +1986,8 @@ v9fs_vfs_mknod_dotl(struct inode *dir, struct dentry *dentry, int mode, dentry->d_op = &v9fs_dentry_operations; d_instantiate(dentry, inode); } - + /* Now set the ACL based on the default value */ + v9fs_set_create_acl(dentry, dacl, pacl); error: if (fid) p9_client_clunk(fid);