From: Andreas Gruenbacher Subject: [PATCH v21 01/22] vfs: Add IS_ACL() and IS_RICHACL() tests Date: Tue, 10 May 2016 00:02:34 +0200 Message-ID: <1462831375-23017-2-git-send-email-agruenba@redhat.com> References: <1462831375-23017-1-git-send-email-agruenba@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: "J. Bruce Fields" , linux-nfs@vger.kernel.org, Theodore Ts'o , Andreas Gruenbacher , linux-cifs@vger.kernel.org, linux-api@vger.kernel.org, Trond Myklebust , linux-kernel@vger.kernel.org, xfs@oss.sgi.com, Christoph Hellwig , Andreas Dilger , linux-fsdevel@vger.kernel.org, Jeff Layton , linux-ext4@vger.kernel.org, Anna Schumaker To: Alexander Viro Return-path: In-Reply-To: <1462831375-23017-1-git-send-email-agruenba@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com List-Id: linux-ext4.vger.kernel.org The vfs does not apply the umask for file systems that support acls. The test used for this used to be called IS_POSIXACL(). Switch to a new IS_ACL() test to check for either posix acls or richacls instead. Add a new MS_RICHACL flag and IS_RICHACL() test for richacls alone. The IS_POSIXACL() test is still needed by nfsd. Signed-off-by: Andreas Gruenbacher Reviewed-by: J. Bruce Fields Reviewed-by: Andreas Dilger Reviewed-by: Steve French --- fs/Kconfig | 3 +++ fs/namei.c | 8 ++++---- include/linux/fs.h | 12 ++++++++++++ include/uapi/linux/fs.h | 3 ++- 4 files changed, 21 insertions(+), 5 deletions(-) diff --git a/fs/Kconfig b/fs/Kconfig index 6725f59..8ad4e53 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -63,6 +63,9 @@ endif # BLOCK config FS_POSIX_ACL def_bool n +config FS_RICHACL + def_bool n + config EXPORTFS tristate diff --git a/fs/namei.c b/fs/namei.c index 3498d53..a986e09 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -2833,7 +2833,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry, } mode = op->mode; - if ((open_flag & O_CREAT) && !IS_POSIXACL(dir)) + if ((open_flag & O_CREAT) && !IS_ACL(dir)) mode &= ~current_umask(); excl = (open_flag & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT); @@ -3023,7 +3023,7 @@ static int lookup_open(struct nameidata *nd, struct path *path, /* Negative dentry, just create the file */ if (!dentry->d_inode && (op->open_flag & O_CREAT)) { umode_t mode = op->mode; - if (!IS_POSIXACL(dir->d_inode)) + if (!IS_ACL(dir->d_inode)) mode &= ~current_umask(); /* * This write is needed to ensure that a @@ -3598,7 +3598,7 @@ retry: if (IS_ERR(dentry)) return PTR_ERR(dentry); - if (!IS_POSIXACL(path.dentry->d_inode)) + if (!IS_ACL(path.dentry->d_inode)) mode &= ~current_umask(); error = security_path_mknod(&path, dentry, mode, dev); if (error) @@ -3667,7 +3667,7 @@ retry: if (IS_ERR(dentry)) return PTR_ERR(dentry); - if (!IS_POSIXACL(path.dentry->d_inode)) + if (!IS_ACL(path.dentry->d_inode)) mode &= ~current_umask(); error = security_path_mkdir(&path, dentry, mode); if (!error) diff --git a/include/linux/fs.h b/include/linux/fs.h index 329ed37..c47de30 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1820,6 +1820,12 @@ struct super_operations { #define IS_IMMUTABLE(inode) ((inode)->i_flags & S_IMMUTABLE) #define IS_POSIXACL(inode) __IS_FLG(inode, MS_POSIXACL) +#ifdef CONFIG_FS_RICHACL +#define IS_RICHACL(inode) __IS_FLG(inode, MS_RICHACL) +#else +#define IS_RICHACL(inode) 0 +#endif + #define IS_DEADDIR(inode) ((inode)->i_flags & S_DEAD) #define IS_NOCMTIME(inode) ((inode)->i_flags & S_NOCMTIME) #define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE) @@ -1833,6 +1839,12 @@ struct super_operations { (inode)->i_rdev == WHITEOUT_DEV) /* + * IS_ACL() tells the VFS to not apply the umask + * and use check_acl for acl permission checks when defined. + */ +#define IS_ACL(inode) __IS_FLG(inode, MS_POSIXACL | MS_RICHACL) + +/* * Inode state bits. Protected by inode->i_lock * * Three bits determine the dirty state of the inode, I_DIRTY_SYNC, diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index a079d50..c454cf5 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -120,7 +120,7 @@ struct inodes_stat_t { #define MS_VERBOSE 32768 /* War is peace. Verbosity is silence. MS_VERBOSE is deprecated. */ #define MS_SILENT 32768 -#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */ +#define MS_POSIXACL (1<<16) /* Supports POSIX ACLs */ #define MS_UNBINDABLE (1<<17) /* change to unbindable */ #define MS_PRIVATE (1<<18) /* change to private */ #define MS_SLAVE (1<<19) /* change to slave */ @@ -130,6 +130,7 @@ struct inodes_stat_t { #define MS_I_VERSION (1<<23) /* Update inode I_version field */ #define MS_STRICTATIME (1<<24) /* Always perform atime updates */ #define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */ +#define MS_RICHACL (1<<26) /* Supports richacls */ /* These sb flags are internal to the kernel */ #define MS_NOSEC (1<<28) -- 2.5.5 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs