On Tue, Nov 12, 2013 at 08:42:45PM +0800, Li Wang wrote: > Hi Guangliang, > Thanks for fixing. > Some minor suggestions, > 1 You may wish to put ceph_forget_all_cached_acls() in a header file > and make it static inline for better performance. > 2 Currently the acl is implemented only as compile-time option, that > is less flexible, most file systems implement acl also as mount-time > option. Maybe you could take it into consideration. All good advices, I would leave them in next patches. Thanks, Guangliang > > Cheers, > Li Wang > > On 11/11/2013 03:18 PM, Guangliang Zhao wrote: > >v5: handle the roll back in ceph_set_acl(), correct > >ceph_get/set_cached_acl() > > > >v4: check the validity before set/get_cached_acl() > > > >v3: handle the attr change in ceph_set_acl() > > > >v2: remove some redundant code in ceph_setattr() > > > >Signed-off-by: Guangliang Zhao <lucienchao@xxxxxxxxx> > >--- > > fs/ceph/Kconfig | 13 +++ > > fs/ceph/Makefile | 1 + > > fs/ceph/acl.c | 332 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > fs/ceph/caps.c | 1 + > > fs/ceph/dir.c | 5 + > > fs/ceph/inode.c | 11 ++ > > fs/ceph/super.c | 4 + > > fs/ceph/super.h | 37 +++++- > > fs/ceph/xattr.c | 60 ++++++++-- > > 9 files changed, 451 insertions(+), 13 deletions(-) > > create mode 100644 fs/ceph/acl.c > > > >diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig > >index ac9a2ef..264e9bf 100644 > >--- a/fs/ceph/Kconfig > >+++ b/fs/ceph/Kconfig > >@@ -25,3 +25,16 @@ config CEPH_FSCACHE > > caching support for Ceph clients using FS-Cache > > > > endif > >+ > >+config CEPH_FS_POSIX_ACL > >+ bool "Ceph POSIX Access Control Lists" > >+ depends on CEPH_FS > >+ select FS_POSIX_ACL > >+ help > >+ POSIX Access Control Lists (ACLs) support permissions for users and > >+ groups beyond the owner/group/world scheme. > >+ > >+ To learn more about Access Control Lists, visit the POSIX ACLs for > >+ Linux website <http://acl.bestbits.at/>. > >+ > >+ If you don't know what Access Control Lists are, say N > >diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile > >index 32e3010..85a4230 100644 > >--- a/fs/ceph/Makefile > >+++ b/fs/ceph/Makefile > >@@ -10,3 +10,4 @@ ceph-y := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \ > > debugfs.o > > > > ceph-$(CONFIG_CEPH_FSCACHE) += cache.o > >+ceph-$(CONFIG_CEPH_FS_POSIX_ACL) += acl.o > >diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c > >new file mode 100644 > >index 0000000..64fddbc > >--- /dev/null > >+++ b/fs/ceph/acl.c > >@@ -0,0 +1,332 @@ > >+/* > >+ * linux/fs/ceph/acl.c > >+ * > >+ * Copyright (C) 2013 Guangliang Zhao, <lucienchao@xxxxxxxxx> > >+ * > >+ * This program is free software; you can redistribute it and/or > >+ * modify it under the terms of the GNU General Public > >+ * License v2 as published by the Free Software Foundation. > >+ * > >+ * This program is distributed in the hope that it will be useful, > >+ * but WITHOUT ANY WARRANTY; without even the implied warranty of > >+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > >+ * General Public License for more details. > >+ * > >+ * You should have received a copy of the GNU General Public > >+ * License along with this program; if not, write to the > >+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330, > >+ * Boston, MA 021110-1307, USA. > >+ */ > >+ > >+#include <linux/ceph/ceph_debug.h> > >+#include <linux/fs.h> > >+#include <linux/string.h> > >+#include <linux/xattr.h> > >+#include <linux/posix_acl_xattr.h> > >+#include <linux/posix_acl.h> > >+#include <linux/sched.h> > >+#include <linux/slab.h> > >+ > >+#include "super.h" > >+ > >+static inline void ceph_set_cached_acl(struct inode *inode, > >+ int type, struct posix_acl *acl) > >+{ > >+ struct ceph_inode_info *ci = ceph_inode(inode); > >+ > >+ spin_lock(&ci->i_ceph_lock); > >+ if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) > >+ set_cached_acl(inode, type, acl); > >+ spin_unlock(&ci->i_ceph_lock); > >+} > >+ > >+static inline struct posix_acl *ceph_get_cached_acl(struct inode *inode, > >+ int type) > >+{ > >+ struct ceph_inode_info *ci = ceph_inode(inode); > >+ struct posix_acl *acl = ACL_NOT_CACHED; > >+ > >+ spin_lock(&ci->i_ceph_lock); > >+ if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) > >+ acl = get_cached_acl(inode, type); > >+ spin_unlock(&ci->i_ceph_lock); > >+ > >+ return acl; > >+} > >+ > >+void ceph_forget_all_cached_acls(struct inode *inode) > >+{ > >+ forget_all_cached_acls(inode); > >+} > >+ > >+struct posix_acl *ceph_get_acl(struct inode *inode, int type) > >+{ > >+ int size; > >+ const char *name; > >+ char *value = NULL; > >+ struct posix_acl *acl; > >+ > >+ if (!IS_POSIXACL(inode)) > >+ return NULL; > >+ > >+ acl = ceph_get_cached_acl(inode, type); > >+ if (acl != ACL_NOT_CACHED) > >+ return acl; > >+ > >+ switch (type) { > >+ case ACL_TYPE_ACCESS: > >+ name = POSIX_ACL_XATTR_ACCESS; > >+ break; > >+ case ACL_TYPE_DEFAULT: > >+ name = POSIX_ACL_XATTR_DEFAULT; > >+ break; > >+ default: > >+ BUG(); > >+ } > >+ > >+ size = __ceph_getxattr(inode, name, "", 0); > >+ if (size > 0) { > >+ value = kzalloc(size, GFP_NOFS); > >+ if (!value) > >+ return ERR_PTR(-ENOMEM); > >+ size = __ceph_getxattr(inode, name, value, size); > >+ } > >+ > >+ if (size > 0) > >+ acl = posix_acl_from_xattr(&init_user_ns, value, size); > >+ else if (size == -ERANGE || size == -ENODATA || size == 0) > >+ acl = NULL; > >+ else > >+ acl = ERR_PTR(-EIO); > >+ > >+ kfree(value); > >+ > >+ if (!IS_ERR(acl)) > >+ ceph_set_cached_acl(inode, type, acl); > >+ > >+ return acl; > >+} > >+ > >+static int ceph_set_acl(struct dentry *dentry, struct inode *inode, > >+ struct posix_acl *acl, int type) > >+{ > >+ int ret = 0, size = 0; > >+ const char *name = NULL; > >+ char *value = NULL; > >+ struct iattr newattrs; > >+ umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; > >+ > >+ if (acl) { > >+ ret = posix_acl_valid(acl); > >+ if (ret < 0) > >+ goto out; > >+ } > >+ > >+ switch (type) { > >+ case ACL_TYPE_ACCESS: > >+ name = POSIX_ACL_XATTR_ACCESS; > >+ if (acl) { > >+ ret = posix_acl_equiv_mode(acl, &new_mode); > >+ if (ret < 0) > >+ goto out; > >+ if (ret == 0) > >+ acl = NULL; > >+ } > >+ break; > >+ case ACL_TYPE_DEFAULT: > >+ if (!S_ISDIR(inode->i_mode)) { > >+ ret = acl ? -EINVAL : 0; > >+ goto out; > >+ } > >+ name = POSIX_ACL_XATTR_DEFAULT; > >+ break; > >+ default: > >+ ret = -EINVAL; > >+ goto out; > >+ } > >+ > >+ if (acl) { > >+ size = posix_acl_xattr_size(acl->a_count); > >+ value = kmalloc(size, GFP_NOFS); > >+ if (!value) { > >+ ret = -ENOMEM; > >+ goto out; > >+ } > >+ > >+ ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); > >+ if (ret < 0) > >+ goto out_free; > >+ } > >+ > >+ if (new_mode != old_mode) { > >+ newattrs.ia_mode = new_mode; > >+ newattrs.ia_valid = ATTR_MODE; > >+ ret = ceph_setattr(dentry, &newattrs); > >+ if (ret) > >+ goto out_free; > >+ } > >+ > >+ if (value) > >+ ret = __ceph_setxattr(dentry, name, value, size, 0); > >+ else > >+ ret = __ceph_removexattr(dentry, name); > >+ > >+ if (ret) { > >+ if (new_mode != old_mode) { > >+ newattrs.ia_mode = old_mode; > >+ newattrs.ia_valid = ATTR_MODE; > >+ ceph_setattr(dentry, &newattrs); > >+ } > >+ goto out_free; > >+ } > >+ > >+ ceph_set_cached_acl(inode, type, acl); > >+ > >+out_free: > >+ kfree(value); > >+out: > >+ return ret; > >+} > >+ > >+int ceph_init_acl(struct dentry *dentry, struct inode *inode, struct inode *dir) > >+{ > >+ struct posix_acl *acl = NULL; > >+ int ret = 0; > >+ > >+ if (!S_ISLNK(inode->i_mode)) { > >+ if (IS_POSIXACL(dir)) { > >+ acl = ceph_get_acl(dir, ACL_TYPE_DEFAULT); > >+ if (IS_ERR(acl)) { > >+ ret = PTR_ERR(acl); > >+ goto out; > >+ } > >+ } > >+ > >+ if (!acl) > >+ inode->i_mode &= ~current_umask(); > >+ } > >+ > >+ if (IS_POSIXACL(dir) && acl) { > >+ if (S_ISDIR(inode->i_mode)) { > >+ ret = ceph_set_acl(dentry, inode, acl, > >+ ACL_TYPE_DEFAULT); > >+ if (ret) > >+ goto out_release; > >+ } > >+ ret = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); > >+ if (ret < 0) > >+ goto out; > >+ else if (ret > 0) > >+ ret = ceph_set_acl(dentry, inode, acl, ACL_TYPE_ACCESS); > >+ else > >+ cache_no_acl(inode); > >+ } else { > >+ cache_no_acl(inode); > >+ } > >+ > >+out_release: > >+ posix_acl_release(acl); > >+out: > >+ return ret; > >+} > >+ > >+int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) > >+{ > >+ struct posix_acl *acl; > >+ int ret = 0; > >+ > >+ if (S_ISLNK(inode->i_mode)) { > >+ ret = -EOPNOTSUPP; > >+ goto out; > >+ } > >+ > >+ if (!IS_POSIXACL(inode)) > >+ goto out; > >+ > >+ acl = ceph_get_acl(inode, ACL_TYPE_ACCESS); > >+ if (IS_ERR_OR_NULL(acl)) { > >+ ret = PTR_ERR(acl); > >+ goto out; > >+ } > >+ > >+ ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > >+ if (ret) > >+ goto out; > >+ ret = ceph_set_acl(dentry, inode, acl, ACL_TYPE_ACCESS); > >+ posix_acl_release(acl); > >+out: > >+ return ret; > >+} > >+ > >+static int ceph_xattr_acl_get(struct dentry *dentry, const char *name, > >+ void *value, size_t size, int type) > >+{ > >+ struct posix_acl *acl; > >+ int ret = 0; > >+ > >+ if (!IS_POSIXACL(dentry->d_inode)) > >+ return -EOPNOTSUPP; > >+ > >+ acl = ceph_get_acl(dentry->d_inode, type); > >+ if (IS_ERR(acl)) > >+ return PTR_ERR(acl); > >+ if (acl == NULL) > >+ return -ENODATA; > >+ > >+ ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); > >+ posix_acl_release(acl); > >+ > >+ return ret; > >+} > >+ > >+static int ceph_xattr_acl_set(struct dentry *dentry, const char *name, > >+ const void *value, size_t size, int flags, int type) > >+{ > >+ int ret = 0; > >+ struct posix_acl *acl = NULL; > >+ > >+ if (!inode_owner_or_capable(dentry->d_inode)) { > >+ ret = -EPERM; > >+ goto out; > >+ } > >+ > >+ if (!IS_POSIXACL(dentry->d_inode)) { > >+ ret = -EOPNOTSUPP; > >+ goto out; > >+ } > >+ > >+ if (value) { > >+ acl = posix_acl_from_xattr(&init_user_ns, value, size); > >+ if (IS_ERR(acl)) { > >+ ret = PTR_ERR(acl); > >+ goto out; > >+ } > >+ > >+ if (acl) { > >+ ret = posix_acl_valid(acl); > >+ if (ret) > >+ goto out_release; > >+ } > >+ } > >+ > >+ ret = ceph_set_acl(dentry, dentry->d_inode, acl, type); > >+ > >+out_release: > >+ posix_acl_release(acl); > >+out: > >+ return ret; > >+} > >+ > >+const struct xattr_handler ceph_xattr_acl_default_handler = { > >+ .prefix = POSIX_ACL_XATTR_DEFAULT, > >+ .flags = ACL_TYPE_DEFAULT, > >+ .get = ceph_xattr_acl_get, > >+ .set = ceph_xattr_acl_set, > >+}; > >+ > >+const struct xattr_handler ceph_xattr_acl_access_handler = { > >+ .prefix = POSIX_ACL_XATTR_ACCESS, > >+ .flags = ACL_TYPE_ACCESS, > >+ .get = ceph_xattr_acl_get, > >+ .set = ceph_xattr_acl_set, > >+}; > >diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c > >index 3c0a4bd..9289c6b2 100644 > >--- a/fs/ceph/caps.c > >+++ b/fs/ceph/caps.c > >@@ -2464,6 +2464,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, > > ceph_buffer_put(ci->i_xattrs.blob); > > ci->i_xattrs.blob = ceph_buffer_get(xattr_buf); > > ci->i_xattrs.version = version; > >+ ceph_forget_all_cached_acls(inode); > > } > > } > > > >diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c > >index 2a0bcae..b629e9d 100644 > >--- a/fs/ceph/dir.c > >+++ b/fs/ceph/dir.c > >@@ -693,6 +693,10 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry, > > if (!err && !req->r_reply_info.head->is_dentry) > > err = ceph_handle_notrace_create(dir, dentry); > > ceph_mdsc_put_request(req); > >+ > >+ if (!err) > >+ err = ceph_init_acl(dentry, dentry->d_inode, dir); > >+ > > if (err) > > d_drop(dentry); > > return err; > >@@ -1293,6 +1297,7 @@ const struct inode_operations ceph_dir_iops = { > > .getxattr = ceph_getxattr, > > .listxattr = ceph_listxattr, > > .removexattr = ceph_removexattr, > >+ .get_acl = ceph_get_acl, > > .mknod = ceph_mknod, > > .symlink = ceph_symlink, > > .mkdir = ceph_mkdir, > >diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c > >index 2ae1381..6bda97b 100644 > >--- a/fs/ceph/inode.c > >+++ b/fs/ceph/inode.c > >@@ -95,6 +95,7 @@ const struct inode_operations ceph_file_iops = { > > .getxattr = ceph_getxattr, > > .listxattr = ceph_listxattr, > > .removexattr = ceph_removexattr, > >+ .get_acl = ceph_get_acl, > > }; > > > > > >@@ -680,6 +681,7 @@ static int fill_inode(struct inode *inode, > > memcpy(ci->i_xattrs.blob->vec.iov_base, > > iinfo->xattr_data, iinfo->xattr_len); > > ci->i_xattrs.version = le64_to_cpu(info->xattr_version); > >+ ceph_forget_all_cached_acls(inode); > > xattr_blob = NULL; > > } > > > >@@ -1632,6 +1634,7 @@ static const struct inode_operations ceph_symlink_iops = { > > .getxattr = ceph_getxattr, > > .listxattr = ceph_listxattr, > > .removexattr = ceph_removexattr, > >+ .get_acl = ceph_get_acl, > > }; > > > > /* > >@@ -1705,6 +1708,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) > > dirtied |= CEPH_CAP_AUTH_EXCL; > > } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || > > attr->ia_mode != inode->i_mode) { > >+ inode->i_mode = attr->ia_mode; > > req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); > > mask |= CEPH_SETATTR_MODE; > > release |= CEPH_CAP_AUTH_SHARED; > >@@ -1820,6 +1824,12 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) > > if (inode_dirty_flags) > > __mark_inode_dirty(inode, inode_dirty_flags); > > > >+ if (ia_valid & ATTR_MODE) { > >+ err = ceph_acl_chmod(dentry, inode); > >+ if (err) > >+ goto out_put; > >+ } > >+ > > if (mask) { > > req->r_inode = inode; > > ihold(inode); > >@@ -1839,6 +1849,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr) > > return err; > > out: > > spin_unlock(&ci->i_ceph_lock); > >+out_put: > > ceph_mdsc_put_request(req); > > return err; > > } > >diff --git a/fs/ceph/super.c b/fs/ceph/super.c > >index e58bd4a..c6740e4 100644 > >--- a/fs/ceph/super.c > >+++ b/fs/ceph/super.c > >@@ -819,7 +819,11 @@ static int ceph_set_super(struct super_block *s, void *data) > > > > s->s_flags = fsc->mount_options->sb_flags; > > s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ > >+#ifdef CONFIG_CEPH_FS_POSIX_ACL > >+ s->s_flags |= MS_POSIXACL; > >+#endif > > > >+ s->s_xattr = ceph_xattr_handlers; > > s->s_fs_info = fsc; > > fsc->sb = s; > > > >diff --git a/fs/ceph/super.h b/fs/ceph/super.h > >index 8de94b5..7fa78a7 100644 > >--- a/fs/ceph/super.h > >+++ b/fs/ceph/super.h > >@@ -335,7 +335,6 @@ struct ceph_inode_info { > > u32 i_fscache_gen; /* sequence, for delayed fscache validate */ > > struct work_struct i_revalidate_work; > > #endif > >- > > struct inode vfs_inode; /* at end */ > > }; > > > >@@ -725,6 +724,9 @@ extern int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, > > /* xattr.c */ > > extern int ceph_setxattr(struct dentry *, const char *, const void *, > > size_t, int); > >+int __ceph_setxattr(struct dentry *, const char *, const void *, size_t, int); > >+ssize_t __ceph_getxattr(struct inode *, const char *, void *, size_t); > >+int __ceph_removexattr(struct dentry *, const char *); > > extern ssize_t ceph_getxattr(struct dentry *, const char *, void *, size_t); > > extern ssize_t ceph_listxattr(struct dentry *, char *, size_t); > > extern int ceph_removexattr(struct dentry *, const char *); > >@@ -733,6 +735,39 @@ extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci); > > extern void __init ceph_xattr_init(void); > > extern void ceph_xattr_exit(void); > > > >+/* acl.c */ > >+extern const struct xattr_handler ceph_xattr_acl_access_handler; > >+extern const struct xattr_handler ceph_xattr_acl_default_handler; > >+extern const struct xattr_handler *ceph_xattr_handlers[]; > >+ > >+#ifdef CONFIG_CEPH_FS_POSIX_ACL > >+ > >+struct posix_acl *ceph_get_acl(struct inode *, int); > >+int ceph_init_acl(struct dentry *, struct inode *, struct inode *); > >+int ceph_acl_chmod(struct dentry *, struct inode *); > >+void ceph_forget_all_cached_acls(struct inode *inode); > >+ > >+#else > >+ > >+#define ceph_get_acl NULL > >+ > >+static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode, > >+ struct inode *dir) > >+{ > >+ return 0; > >+} > >+ > >+static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode) > >+{ > >+ return 0; > >+} > >+ > >+static inline void ceph_forget_all_cached_acls(struct inode *inode) > >+{ > >+} > >+ > >+#endif > >+ > > /* caps.c */ > > extern const char *ceph_cap_string(int c); > > extern void ceph_handle_caps(struct ceph_mds_session *session, > >diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c > >index be661d8..c7581f3 100644 > >--- a/fs/ceph/xattr.c > >+++ b/fs/ceph/xattr.c > >@@ -11,11 +11,24 @@ > > #define XATTR_CEPH_PREFIX "ceph." > > #define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1) > > > >+/* > >+ * List of handlers for synthetic system.* attributes. Other > >+ * attributes are handled directly. > >+ */ > >+const struct xattr_handler *ceph_xattr_handlers[] = { > >+#ifdef CONFIG_CEPH_FS_POSIX_ACL > >+ &ceph_xattr_acl_access_handler, > >+ &ceph_xattr_acl_default_handler, > >+#endif > >+ NULL, > >+}; > >+ > > static bool ceph_is_valid_xattr(const char *name) > > { > > return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) || > > !strncmp(name, XATTR_SECURITY_PREFIX, > > XATTR_SECURITY_PREFIX_LEN) || > >+ !strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN) || > > !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || > > !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); > > } > >@@ -663,10 +676,9 @@ void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) > > } > > } > > > >-ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, > >+ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value, > > size_t size) > > { > >- struct inode *inode = dentry->d_inode; > > struct ceph_inode_info *ci = ceph_inode(inode); > > int err; > > struct ceph_inode_xattr *xattr; > >@@ -675,7 +687,6 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, > > if (!ceph_is_valid_xattr(name)) > > return -ENODATA; > > > >- > > /* let's see if a virtual xattr was requested */ > > vxattr = ceph_match_vxattr(inode, name); > > if (vxattr && !(vxattr->exists_cb && !vxattr->exists_cb(ci))) { > >@@ -725,6 +736,15 @@ out: > > return err; > > } > > > >+ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, > >+ size_t size) > >+{ > >+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) > >+ return generic_getxattr(dentry, name, value, size); > >+ > >+ return __ceph_getxattr(dentry->d_inode, name, value, size); > >+} > >+ > > ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) > > { > > struct inode *inode = dentry->d_inode; > >@@ -863,8 +883,8 @@ out: > > return err; > > } > > > >-int ceph_setxattr(struct dentry *dentry, const char *name, > >- const void *value, size_t size, int flags) > >+int __ceph_setxattr(struct dentry *dentry, const char *name, > >+ const void *value, size_t size, int flags) > > { > > struct inode *inode = dentry->d_inode; > > struct ceph_vxattr *vxattr; > >@@ -879,9 +899,6 @@ int ceph_setxattr(struct dentry *dentry, const char *name, > > struct ceph_inode_xattr *xattr = NULL; > > int required_blob_size; > > > >- if (ceph_snap(inode) != CEPH_NOSNAP) > >- return -EROFS; > >- > > if (!ceph_is_valid_xattr(name)) > > return -EOPNOTSUPP; > > > >@@ -958,6 +975,18 @@ out: > > return err; > > } > > > >+int ceph_setxattr(struct dentry *dentry, const char *name, > >+ const void *value, size_t size, int flags) > >+{ > >+ if (ceph_snap(dentry->d_inode) != CEPH_NOSNAP) > >+ return -EROFS; > >+ > >+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) > >+ return generic_setxattr(dentry, name, value, size, flags); > >+ > >+ return __ceph_setxattr(dentry, name, value, size, flags); > >+} > >+ > > static int ceph_send_removexattr(struct dentry *dentry, const char *name) > > { > > struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); > >@@ -984,7 +1013,7 @@ static int ceph_send_removexattr(struct dentry *dentry, const char *name) > > return err; > > } > > > >-int ceph_removexattr(struct dentry *dentry, const char *name) > >+int __ceph_removexattr(struct dentry *dentry, const char *name) > > { > > struct inode *inode = dentry->d_inode; > > struct ceph_vxattr *vxattr; > >@@ -994,9 +1023,6 @@ int ceph_removexattr(struct dentry *dentry, const char *name) > > int required_blob_size; > > int dirty; > > > >- if (ceph_snap(inode) != CEPH_NOSNAP) > >- return -EROFS; > >- > > if (!ceph_is_valid_xattr(name)) > > return -EOPNOTSUPP; > > > >@@ -1053,3 +1079,13 @@ out: > > return err; > > } > > > >+int ceph_removexattr(struct dentry *dentry, const char *name) > >+{ > >+ if (ceph_snap(dentry->d_inode) != CEPH_NOSNAP) > >+ return -EROFS; > >+ > >+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN)) > >+ return generic_removexattr(dentry, name); > >+ > >+ return __ceph_removexattr(dentry, name); > >+} > > -- Best regards, Guangliang -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
