diff options
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_acl.c | 151 | ||||
| -rw-r--r-- | fs/xfs/xfs_acl.h | 9 | ||||
| -rw-r--r-- | fs/xfs/xfs_iops.c | 55 | ||||
| -rw-r--r-- | fs/xfs/xfs_iops.h | 2 | ||||
| -rw-r--r-- | fs/xfs/xfs_xattr.c | 4 |
5 files changed, 37 insertions, 184 deletions
diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 370eb3e..0ecec18 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -124,16 +124,12 @@ struct posix_acl * xfs_get_acl(struct inode *inode, int type) { struct xfs_inode *ip = XFS_I(inode); - struct posix_acl *acl; + struct posix_acl *acl = NULL; struct xfs_acl *xfs_acl; unsigned char *ea_name; int error; int len; - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - trace_xfs_get_acl(ip); switch (type) { @@ -164,10 +160,8 @@ xfs_get_acl(struct inode *inode, int type) * cache entry, for any other error assume it is transient and * leave the cache entry as ACL_NOT_CACHED. */ - if (error == -ENOATTR) { - acl = NULL; + if (error == -ENOATTR) goto out_update_cache; - } goto out; } @@ -183,15 +177,12 @@ out: } STATIC int -xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) +__xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) { struct xfs_inode *ip = XFS_I(inode); unsigned char *ea_name; int error; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: ea_name = SGI_ACL_FILE; @@ -282,131 +273,23 @@ posix_acl_default_exists(struct inode *inode) return xfs_acl_exists(inode, SGI_ACL_DEFAULT); } -/* - * No need for i_mutex because the inode is not yet exposed to the VFS. - */ int -xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) +xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - umode_t mode = inode->i_mode; - int error = 0, inherit = 0; - - if (S_ISDIR(inode->i_mode)) { - error = xfs_set_acl(inode, ACL_TYPE_DEFAULT, acl); - if (error) - goto out; - } - - error = posix_acl_create(&acl, GFP_KERNEL, &mode); - if (error < 0) - return error; - - /* - * If posix_acl_create returns a positive value we need to - * inherit a permission that can't be represented using the Unix - * mode bits and we actually need to set an ACL. - */ - if (error > 0) - inherit = 1; - - error = xfs_set_mode(inode, mode); - if (error) - goto out; - - if (inherit) - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - -out: - posix_acl_release(acl); - return error; -} - -int -xfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int error; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = xfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (error) - return error; - - error = xfs_set_acl(inode, ACL_TYPE_ACCESS, acl); - posix_acl_release(acl); - return error; -} - -static int -xfs_xattr_acl_get(struct dentry *dentry, const char *name, - void *value, size_t size, int type) -{ - struct posix_acl *acl; - int error; - - acl = xfs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - - error = posix_acl_to_xattr(&init_user_ns, acl, value, size); - posix_acl_release(acl); - - return error; -} - -static int -xfs_xattr_acl_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; int error = 0; - if (flags & XATTR_CREATE) - return -EINVAL; - if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) - return value ? -EACCES : 0; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (!value) + if (!acl) goto set_acl; - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (!acl) { - /* - * acl_set_file(3) may request that we set default ACLs with - * zero length -- defend (gracefully) against that here. - */ - goto out; - } - if (IS_ERR(acl)) { - error = PTR_ERR(acl); - goto out; - } - - error = posix_acl_valid(acl); - if (error) - goto out_release; - error = -EINVAL; if (acl->a_count > XFS_ACL_MAX_ENTRIES(XFS_M(inode->i_sb))) - goto out_release; + return error; if (type == ACL_TYPE_ACCESS) { umode_t mode = inode->i_mode; error = posix_acl_equiv_mode(acl, &mode); if (error <= 0) { - posix_acl_release(acl); acl = NULL; if (error < 0) @@ -415,27 +298,9 @@ xfs_xattr_acl_set(struct dentry *dentry, const char *name, error = xfs_set_mode(inode, mode); if (error) - goto out_release; + return error; } set_acl: - error = xfs_set_acl(inode, type, acl); - out_release: - posix_acl_release(acl); - out: - return error; + return __xfs_set_acl(inode, type, acl); } - -const struct xattr_handler xfs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; - -const struct xattr_handler xfs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .get = xfs_xattr_acl_get, - .set = xfs_xattr_acl_set, -}; diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 4016a56..5dc1637 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -60,20 +60,15 @@ struct xfs_acl { #ifdef CONFIG_XFS_POSIX_ACL extern struct posix_acl *xfs_get_acl(struct inode *inode, int type); -extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl); -extern int xfs_acl_chmod(struct inode *inode); +extern int xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int posix_acl_access_exists(struct inode *inode); extern int posix_acl_default_exists(struct inode *inode); - -extern const struct xattr_handler xfs_xattr_acl_access_handler; -extern const struct xattr_handler xfs_xattr_acl_default_handler; #else static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type) { return NULL; } -# define xfs_inherit_acl(inode, default_acl) 0 -# define xfs_acl_chmod(inode) 0 +# define xfs_set_acl NULL # define posix_acl_access_exists(inode) 0 # define posix_acl_default_exists(inode) 0 #endif /* CONFIG_XFS_POSIX_ACL */ diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 0ce1d75..f35d5c9 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -123,7 +123,7 @@ xfs_vn_mknod( { struct inode *inode; struct xfs_inode *ip = NULL; - struct posix_acl *default_acl = NULL; + struct posix_acl *default_acl, *acl; struct xfs_name name; int error; @@ -139,14 +139,9 @@ xfs_vn_mknod( rdev = 0; } - if (IS_POSIXACL(dir)) { - default_acl = xfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(default_acl)) - return PTR_ERR(default_acl); - - if (!default_acl) - mode &= ~current_umask(); - } + error = posix_acl_create(dir, &mode, &default_acl, &acl); + if (error) + return error; xfs_dentry_to_name(&name, dentry, mode); error = xfs_create(XFS_I(dir), &name, mode, rdev, &ip); @@ -159,22 +154,30 @@ xfs_vn_mknod( if (unlikely(error)) goto out_cleanup_inode; +#ifdef CONFIG_XFS_POSIX_ACL if (default_acl) { - error = -xfs_inherit_acl(inode, default_acl); - default_acl = NULL; - if (unlikely(error)) + error = xfs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + if (error) goto out_cleanup_inode; } - + if (acl) { + error = xfs_set_acl(inode, acl, ACL_TYPE_ACCESS); + if (error) + goto out_cleanup_inode; + } +#endif d_instantiate(dentry, inode); + out_free_acl: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); return -error; out_cleanup_inode: xfs_cleanup_inode(dir, inode, dentry); - out_free_acl: - posix_acl_release(default_acl); - return -error; + goto out_free_acl; } STATIC int @@ -391,18 +394,6 @@ xfs_vn_follow_link( return NULL; } -STATIC void -xfs_vn_put_link( - struct dentry *dentry, - struct nameidata *nd, - void *p) -{ - char *s = nd_get_link(nd); - - if (!IS_ERR(s)) - kfree(s); -} - STATIC int xfs_vn_getattr( struct vfsmount *mnt, @@ -688,7 +679,7 @@ xfs_setattr_nonsize( * Posix ACL code seems to care about this issue either. */ if ((mask & ATTR_MODE) && !(flags & XFS_ATTR_NOACL)) { - error = -xfs_acl_chmod(inode); + error = -posix_acl_chmod(inode, inode->i_mode); if (error) return XFS_ERROR(error); } @@ -1045,6 +1036,7 @@ xfs_vn_fiemap( static const struct inode_operations xfs_inode_operations = { .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1072,6 +1064,7 @@ static const struct inode_operations xfs_dir_inode_operations = { .mknod = xfs_vn_mknod, .rename = xfs_vn_rename, .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1098,6 +1091,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = { .mknod = xfs_vn_mknod, .rename = xfs_vn_rename, .get_acl = xfs_get_acl, + .set_acl = xfs_set_acl, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, @@ -1110,8 +1104,7 @@ static const struct inode_operations xfs_dir_ci_inode_operations = { static const struct inode_operations xfs_symlink_inode_operations = { .readlink = generic_readlink, .follow_link = xfs_vn_follow_link, - .put_link = xfs_vn_put_link, - .get_acl = xfs_get_acl, + .put_link = kfree_put_link, .getattr = xfs_vn_getattr, .setattr = xfs_vn_setattr, .setxattr = generic_setxattr, diff --git a/fs/xfs/xfs_iops.h b/fs/xfs/xfs_iops.h index d2c5057..1c34e43 100644 --- a/fs/xfs/xfs_iops.h +++ b/fs/xfs/xfs_iops.h @@ -30,7 +30,7 @@ extern void xfs_setup_inode(struct xfs_inode *); /* * Internal setattr interfaces. */ -#define XFS_ATTR_NOACL 0x01 /* Don't call xfs_acl_chmod */ +#define XFS_ATTR_NOACL 0x01 /* Don't call posix_acl_chmod */ extern int xfs_setattr_nonsize(struct xfs_inode *ip, struct iattr *vap, int flags); diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c index 9d47907..78ed92a 100644 --- a/fs/xfs/xfs_xattr.c +++ b/fs/xfs/xfs_xattr.c @@ -102,8 +102,8 @@ const struct xattr_handler *xfs_xattr_handlers[] = { &xfs_xattr_trusted_handler, &xfs_xattr_security_handler, #ifdef CONFIG_XFS_POSIX_ACL - &xfs_xattr_acl_access_handler, - &xfs_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif NULL }; |
