mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-14 21:01:29 +00:00
ceph: include the initial ACL in create/mkdir/mknod MDS requests
Current code set new file/directory's initial ACL in a non-atomic manner. Client first sends request to MDS to create new file/directory, then set the initial ACL after the new file/directory is successfully created. The fix is include the initial ACL in create/mkdir/mknod MDS requests. So MDS can handle creating file/directory and setting the initial ACL in one request. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
This commit is contained in:
Yan, Zheng
Sage Weil
parent
25e6bae356
commit
b1ee94aa59
127
fs/ceph/acl.c
127
fs/ceph/acl.c
@ -169,36 +169,109 @@ out:
|
||||
return ret;
|
||||
}
|
||||
|
||||
int ceph_init_acl(struct dentry *dentry, struct inode *inode, struct inode *dir)
|
||||
int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
|
||||
struct ceph_acls_info *info)
|
||||
{
|
||||
struct posix_acl *default_acl, *acl;
|
||||
umode_t new_mode = inode->i_mode;
|
||||
int error;
|
||||
struct posix_acl *acl, *default_acl;
|
||||
size_t val_size1 = 0, val_size2 = 0;
|
||||
struct ceph_pagelist *pagelist = NULL;
|
||||
void *tmp_buf = NULL;
|
||||
int err;
|
||||
|
||||
error = posix_acl_create(dir, &new_mode, &default_acl, &acl);
|
||||
if (error)
|
||||
return error;
|
||||
err = posix_acl_create(dir, mode, &default_acl, &acl);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
if (!default_acl && !acl) {
|
||||
cache_no_acl(inode);
|
||||
if (new_mode != inode->i_mode) {
|
||||
struct iattr newattrs = {
|
||||
.ia_mode = new_mode,
|
||||
.ia_valid = ATTR_MODE,
|
||||
};
|
||||
error = ceph_setattr(dentry, &newattrs);
|
||||
}
|
||||
return error;
|
||||
}
|
||||
|
||||
if (default_acl) {
|
||||
error = ceph_set_acl(inode, default_acl, ACL_TYPE_DEFAULT);
|
||||
posix_acl_release(default_acl);
|
||||
}
|
||||
if (acl) {
|
||||
if (!error)
|
||||
error = ceph_set_acl(inode, acl, ACL_TYPE_ACCESS);
|
||||
posix_acl_release(acl);
|
||||
int ret = posix_acl_equiv_mode(acl, mode);
|
||||
if (ret < 0)
|
||||
goto out_err;
|
||||
if (ret == 0) {
|
||||
posix_acl_release(acl);
|
||||
acl = NULL;
|
||||
}
|
||||
}
|
||||
return error;
|
||||
|
||||
if (!default_acl && !acl)
|
||||
return 0;
|
||||
|
||||
if (acl)
|
||||
val_size1 = posix_acl_xattr_size(acl->a_count);
|
||||
if (default_acl)
|
||||
val_size2 = posix_acl_xattr_size(default_acl->a_count);
|
||||
|
||||
err = -ENOMEM;
|
||||
tmp_buf = kmalloc(max(val_size1, val_size2), GFP_NOFS);
|
||||
if (!tmp_buf)
|
||||
goto out_err;
|
||||
pagelist = kmalloc(sizeof(struct ceph_pagelist), GFP_NOFS);
|
||||
if (!pagelist)
|
||||
goto out_err;
|
||||
ceph_pagelist_init(pagelist);
|
||||
|
||||
err = ceph_pagelist_reserve(pagelist, PAGE_SIZE);
|
||||
if (err)
|
||||
goto out_err;
|
||||
|
||||
ceph_pagelist_encode_32(pagelist, acl && default_acl ? 2 : 1);
|
||||
|
||||
if (acl) {
|
||||
size_t len = strlen(POSIX_ACL_XATTR_ACCESS);
|
||||
err = ceph_pagelist_reserve(pagelist, len + val_size1 + 8);
|
||||
if (err)
|
||||
goto out_err;
|
||||
ceph_pagelist_encode_string(pagelist, POSIX_ACL_XATTR_ACCESS,
|
||||
len);
|
||||
err = posix_acl_to_xattr(&init_user_ns, acl,
|
||||
tmp_buf, val_size1);
|
||||
if (err < 0)
|
||||
goto out_err;
|
||||
ceph_pagelist_encode_32(pagelist, val_size1);
|
||||
ceph_pagelist_append(pagelist, tmp_buf, val_size1);
|
||||
}
|
||||
if (default_acl) {
|
||||
size_t len = strlen(POSIX_ACL_XATTR_DEFAULT);
|
||||
err = ceph_pagelist_reserve(pagelist, len + val_size2 + 8);
|
||||
if (err)
|
||||
goto out_err;
|
||||
err = ceph_pagelist_encode_string(pagelist,
|
||||
POSIX_ACL_XATTR_DEFAULT, len);
|
||||
err = posix_acl_to_xattr(&init_user_ns, default_acl,
|
||||
tmp_buf, val_size2);
|
||||
if (err < 0)
|
||||
goto out_err;
|
||||
ceph_pagelist_encode_32(pagelist, val_size2);
|
||||
ceph_pagelist_append(pagelist, tmp_buf, val_size2);
|
||||
}
|
||||
|
||||
kfree(tmp_buf);
|
||||
|
||||
info->acl = acl;
|
||||
info->default_acl = default_acl;
|
||||
info->pagelist = pagelist;
|
||||
return 0;
|
||||
|
||||
out_err:
|
||||
posix_acl_release(acl);
|
||||
posix_acl_release(default_acl);
|
||||
kfree(tmp_buf);
|
||||
if (pagelist)
|
||||
ceph_pagelist_release(pagelist);
|
||||
return err;
|
||||
}
|
||||
|
||||
void ceph_init_inode_acls(struct inode* inode, struct ceph_acls_info *info)
|
||||
{
|
||||
if (!inode)
|
||||
return;
|
||||
ceph_set_cached_acl(inode, ACL_TYPE_ACCESS, info->acl);
|
||||
ceph_set_cached_acl(inode, ACL_TYPE_DEFAULT, info->default_acl);
|
||||
}
|
||||
|
||||
void ceph_release_acls_info(struct ceph_acls_info *info)
|
||||
{
|
||||
posix_acl_release(info->acl);
|
||||
posix_acl_release(info->default_acl);
|
||||
if (info->pagelist)
|
||||
ceph_pagelist_release(info->pagelist);
|
||||
}
|
||||
|
||||
@ -682,17 +682,22 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
|
||||
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
|
||||
struct ceph_mds_client *mdsc = fsc->mdsc;
|
||||
struct ceph_mds_request *req;
|
||||
struct ceph_acls_info acls = {};
|
||||
int err;
|
||||
|
||||
if (ceph_snap(dir) != CEPH_NOSNAP)
|
||||
return -EROFS;
|
||||
|
||||
err = ceph_pre_init_acls(dir, &mode, &acls);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
dout("mknod in dir %p dentry %p mode 0%ho rdev %d\n",
|
||||
dir, dentry, mode, rdev);
|
||||
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_MKNOD, USE_AUTH_MDS);
|
||||
if (IS_ERR(req)) {
|
||||
d_drop(dentry);
|
||||
return PTR_ERR(req);
|
||||
err = PTR_ERR(req);
|
||||
goto out;
|
||||
}
|
||||
req->r_dentry = dget(dentry);
|
||||
req->r_num_caps = 2;
|
||||
@ -701,15 +706,20 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
|
||||
req->r_args.mknod.rdev = cpu_to_le32(rdev);
|
||||
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
|
||||
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
|
||||
if (acls.pagelist) {
|
||||
req->r_pagelist = acls.pagelist;
|
||||
acls.pagelist = NULL;
|
||||
}
|
||||
err = ceph_mdsc_do_request(mdsc, dir, req);
|
||||
if (!err && !req->r_reply_info.head->is_dentry)
|
||||
err = ceph_handle_notrace_create(dir, dentry);
|
||||
ceph_mdsc_put_request(req);
|
||||
|
||||
out:
|
||||
if (!err)
|
||||
ceph_init_acl(dentry, dentry->d_inode, dir);
|
||||
ceph_init_inode_acls(dentry->d_inode, &acls);
|
||||
else
|
||||
d_drop(dentry);
|
||||
ceph_release_acls_info(&acls);
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -733,8 +743,8 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
|
||||
dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest);
|
||||
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS);
|
||||
if (IS_ERR(req)) {
|
||||
d_drop(dentry);
|
||||
return PTR_ERR(req);
|
||||
err = PTR_ERR(req);
|
||||
goto out;
|
||||
}
|
||||
req->r_dentry = dget(dentry);
|
||||
req->r_num_caps = 2;
|
||||
@ -746,9 +756,8 @@ static int ceph_symlink(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)
|
||||
ceph_init_acl(dentry, dentry->d_inode, dir);
|
||||
else
|
||||
out:
|
||||
if (err)
|
||||
d_drop(dentry);
|
||||
return err;
|
||||
}
|
||||
@ -758,6 +767,7 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
|
||||
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
|
||||
struct ceph_mds_client *mdsc = fsc->mdsc;
|
||||
struct ceph_mds_request *req;
|
||||
struct ceph_acls_info acls = {};
|
||||
int err = -EROFS;
|
||||
int op;
|
||||
|
||||
@ -772,6 +782,12 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
|
||||
} else {
|
||||
goto out;
|
||||
}
|
||||
|
||||
mode |= S_IFDIR;
|
||||
err = ceph_pre_init_acls(dir, &mode, &acls);
|
||||
if (err < 0)
|
||||
goto out;
|
||||
|
||||
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
|
||||
if (IS_ERR(req)) {
|
||||
err = PTR_ERR(req);
|
||||
@ -784,15 +800,20 @@ static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
|
||||
req->r_args.mkdir.mode = cpu_to_le32(mode);
|
||||
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
|
||||
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
|
||||
if (acls.pagelist) {
|
||||
req->r_pagelist = acls.pagelist;
|
||||
acls.pagelist = NULL;
|
||||
}
|
||||
err = ceph_mdsc_do_request(mdsc, dir, req);
|
||||
if (!err && !req->r_reply_info.head->is_dentry)
|
||||
err = ceph_handle_notrace_create(dir, dentry);
|
||||
ceph_mdsc_put_request(req);
|
||||
out:
|
||||
if (!err)
|
||||
ceph_init_acl(dentry, dentry->d_inode, dir);
|
||||
ceph_init_inode_acls(dentry->d_inode, &acls);
|
||||
else
|
||||
d_drop(dentry);
|
||||
ceph_release_acls_info(&acls);
|
||||
return err;
|
||||
}
|
||||
|
||||
|
||||
@ -235,6 +235,7 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
|
||||
struct ceph_mds_client *mdsc = fsc->mdsc;
|
||||
struct ceph_mds_request *req;
|
||||
struct dentry *dn;
|
||||
struct ceph_acls_info acls = {};
|
||||
int err;
|
||||
|
||||
dout("atomic_open %p dentry %p '%.*s' %s flags %d mode 0%o\n",
|
||||
@ -248,22 +249,34 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
if (flags & O_CREAT) {
|
||||
err = ceph_pre_init_acls(dir, &mode, &acls);
|
||||
if (err < 0)
|
||||
return err;
|
||||
}
|
||||
|
||||
/* do the open */
|
||||
req = prepare_open_request(dir->i_sb, flags, mode);
|
||||
if (IS_ERR(req))
|
||||
return PTR_ERR(req);
|
||||
if (IS_ERR(req)) {
|
||||
err = PTR_ERR(req);
|
||||
goto out_acl;
|
||||
}
|
||||
req->r_dentry = dget(dentry);
|
||||
req->r_num_caps = 2;
|
||||
if (flags & O_CREAT) {
|
||||
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
|
||||
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
|
||||
if (acls.pagelist) {
|
||||
req->r_pagelist = acls.pagelist;
|
||||
acls.pagelist = NULL;
|
||||
}
|
||||
}
|
||||
req->r_locked_dir = dir; /* caller holds dir->i_mutex */
|
||||
err = ceph_mdsc_do_request(mdsc,
|
||||
(flags & (O_CREAT|O_TRUNC)) ? dir : NULL,
|
||||
req);
|
||||
if (err)
|
||||
goto out_err;
|
||||
goto out_req;
|
||||
|
||||
err = ceph_handle_snapdir(req, dentry, err);
|
||||
if (err == 0 && (flags & O_CREAT) && !req->r_reply_info.head->is_dentry)
|
||||
@ -278,7 +291,7 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
|
||||
dn = NULL;
|
||||
}
|
||||
if (err)
|
||||
goto out_err;
|
||||
goto out_req;
|
||||
if (dn || dentry->d_inode == NULL || S_ISLNK(dentry->d_inode->i_mode)) {
|
||||
/* make vfs retry on splice, ENOENT, or symlink */
|
||||
dout("atomic_open finish_no_open on dn %p\n", dn);
|
||||
@ -286,15 +299,17 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
|
||||
} else {
|
||||
dout("atomic_open finish_open on dn %p\n", dn);
|
||||
if (req->r_op == CEPH_MDS_OP_CREATE && req->r_reply_info.has_create_ino) {
|
||||
ceph_init_acl(dentry, dentry->d_inode, dir);
|
||||
ceph_init_inode_acls(dentry->d_inode, &acls);
|
||||
*opened |= FILE_CREATED;
|
||||
}
|
||||
err = finish_open(file, dentry, ceph_open, opened);
|
||||
}
|
||||
out_err:
|
||||
out_req:
|
||||
if (!req->r_err && req->r_target_inode)
|
||||
ceph_put_fmode(ceph_inode(req->r_target_inode), req->r_fmode);
|
||||
ceph_mdsc_put_request(req);
|
||||
out_acl:
|
||||
ceph_release_acls_info(&acls);
|
||||
dout("atomic_open result=%d\n", err);
|
||||
return err;
|
||||
}
|
||||
|
||||
@ -733,15 +733,23 @@ extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci);
|
||||
extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci);
|
||||
extern void __init ceph_xattr_init(void);
|
||||
extern void ceph_xattr_exit(void);
|
||||
extern const struct xattr_handler *ceph_xattr_handlers[];
|
||||
|
||||
/* acl.c */
|
||||
extern const struct xattr_handler *ceph_xattr_handlers[];
|
||||
struct ceph_acls_info {
|
||||
void *default_acl;
|
||||
void *acl;
|
||||
struct ceph_pagelist *pagelist;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_CEPH_FS_POSIX_ACL
|
||||
|
||||
struct posix_acl *ceph_get_acl(struct inode *, int);
|
||||
int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type);
|
||||
int ceph_init_acl(struct dentry *, struct inode *, struct inode *);
|
||||
int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
|
||||
struct ceph_acls_info *info);
|
||||
void ceph_init_inode_acls(struct inode *inode, struct ceph_acls_info *info);
|
||||
void ceph_release_acls_info(struct ceph_acls_info *info);
|
||||
|
||||
static inline void ceph_forget_all_cached_acls(struct inode *inode)
|
||||
{
|
||||
@ -753,12 +761,18 @@ static inline void ceph_forget_all_cached_acls(struct inode *inode)
|
||||
#define ceph_get_acl NULL
|
||||
#define ceph_set_acl NULL
|
||||
|
||||
static inline int ceph_init_acl(struct dentry *dentry, struct inode *inode,
|
||||
struct inode *dir)
|
||||
static inline int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
|
||||
struct ceph_acls_info *info)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void ceph_init_inode_acls(struct inode *inode,
|
||||
struct ceph_acls_info *info)
|
||||
{
|
||||
}
|
||||
static inline void ceph_release_acls_info(struct ceph_acls_info *info)
|
||||
{
|
||||
}
|
||||
static inline int ceph_acl_chmod(struct dentry *dentry, struct inode *inode)
|
||||
{
|
||||
return 0;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user