From: xiubli@redhat.com
To: ceph-devel@vger.kernel.org
Cc: idryomov@gmail.com, jlayton@kernel.org, vshankar@redhat.com,
mchangir@redhat.com, Xiubo Li <xiubli@redhat.com>
Subject: [PATCH v4 3/6] ceph: check the cephx mds auth access for setattr
Date: Tue, 27 Feb 2024 15:27:02 +0800 [thread overview]
Message-ID: <20240227072705.593676-4-xiubli@redhat.com> (raw)
In-Reply-To: <20240227072705.593676-1-xiubli@redhat.com>
From: Xiubo Li <xiubli@redhat.com>
If we hit any failre just try to force it to do the sync setattr.
URL: https://tracker.ceph.com/issues/61333
Signed-off-by: Xiubo Li <xiubli@redhat.com>
---
fs/ceph/inode.c | 46 +++++++++++++++++++++++++++++++++++++---------
1 file changed, 37 insertions(+), 9 deletions(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 3030136b0a61..486ad9d917d0 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2492,6 +2492,34 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
bool lock_snap_rwsem = false;
bool fill_fscrypt;
int truncate_retry = 20; /* The RMW will take around 50ms */
+ struct dentry *dentry;
+ char *path;
+ int pathlen;
+ u64 pathbase;
+ bool do_sync = false;
+
+ dentry = d_find_alias(inode);
+ if (!dentry) {
+ do_sync = true;
+ } else {
+ path = ceph_mdsc_build_path(mdsc, dentry, &pathlen, &pathbase, 0);
+ if (IS_ERR(path)) {
+ do_sync = true;
+ err = 0;
+ } else {
+ err = ceph_mds_check_access(mdsc, path, MAY_WRITE);
+ }
+ ceph_mdsc_free_path(path, pathlen);
+ dput(dentry);
+
+ /* For none EACCES cases will let the MDS do the mds auth check */
+ if (err == -EACCES) {
+ return err;
+ } else if (err < 0) {
+ do_sync = true;
+ err = 0;
+ }
+ }
retry:
prealloc_cf = ceph_alloc_cap_flush();
@@ -2538,7 +2566,7 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
/* It should never be re-set once set */
WARN_ON_ONCE(ci->fscrypt_auth);
- if (issued & CEPH_CAP_AUTH_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_AUTH_EXCL)) {
dirtied |= CEPH_CAP_AUTH_EXCL;
kfree(ci->fscrypt_auth);
ci->fscrypt_auth = (u8 *)cia->fscrypt_auth;
@@ -2567,7 +2595,7 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
ceph_vinop(inode),
from_kuid(&init_user_ns, inode->i_uid),
from_kuid(&init_user_ns, attr->ia_uid));
- if (issued & CEPH_CAP_AUTH_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_AUTH_EXCL)) {
inode->i_uid = fsuid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
@@ -2585,7 +2613,7 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
ceph_vinop(inode),
from_kgid(&init_user_ns, inode->i_gid),
from_kgid(&init_user_ns, attr->ia_gid));
- if (issued & CEPH_CAP_AUTH_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_AUTH_EXCL)) {
inode->i_gid = fsgid;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
@@ -2599,7 +2627,7 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
if (ia_valid & ATTR_MODE) {
doutc(cl, "%p %llx.%llx mode 0%o -> 0%o\n", inode,
ceph_vinop(inode), inode->i_mode, attr->ia_mode);
- if (issued & CEPH_CAP_AUTH_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_AUTH_EXCL)) {
inode->i_mode = attr->ia_mode;
dirtied |= CEPH_CAP_AUTH_EXCL;
} else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
@@ -2618,11 +2646,11 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
inode, ceph_vinop(inode),
atime.tv_sec, atime.tv_nsec,
attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec);
- if (issued & CEPH_CAP_FILE_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_FILE_EXCL)) {
ci->i_time_warp_seq++;
inode_set_atime_to_ts(inode, attr->ia_atime);
dirtied |= CEPH_CAP_FILE_EXCL;
- } else if ((issued & CEPH_CAP_FILE_WR) &&
+ } else if (!do_sync && (issued & CEPH_CAP_FILE_WR) &&
timespec64_compare(&atime,
&attr->ia_atime) < 0) {
inode_set_atime_to_ts(inode, attr->ia_atime);
@@ -2658,7 +2686,7 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
CEPH_FSCRYPT_BLOCK_SIZE));
req->r_fscrypt_file = attr->ia_size;
fill_fscrypt = true;
- } else if ((issued & CEPH_CAP_FILE_EXCL) && attr->ia_size >= isize) {
+ } else if (!do_sync && (issued & CEPH_CAP_FILE_EXCL) && attr->ia_size >= isize) {
if (attr->ia_size > isize) {
i_size_write(inode, attr->ia_size);
inode->i_blocks = calc_inode_blocks(attr->ia_size);
@@ -2695,11 +2723,11 @@ int __ceph_setattr(struct mnt_idmap *idmap, struct inode *inode,
inode, ceph_vinop(inode),
mtime.tv_sec, mtime.tv_nsec,
attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec);
- if (issued & CEPH_CAP_FILE_EXCL) {
+ if (!do_sync && (issued & CEPH_CAP_FILE_EXCL)) {
ci->i_time_warp_seq++;
inode_set_mtime_to_ts(inode, attr->ia_mtime);
dirtied |= CEPH_CAP_FILE_EXCL;
- } else if ((issued & CEPH_CAP_FILE_WR) &&
+ } else if (!do_sync && (issued & CEPH_CAP_FILE_WR) &&
timespec64_compare(&mtime, &attr->ia_mtime) < 0) {
inode_set_mtime_to_ts(inode, attr->ia_mtime);
dirtied |= CEPH_CAP_FILE_WR;
--
2.43.0
next prev parent reply other threads:[~2024-02-27 7:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-27 7:26 [PATCH v4 0/6] ceph: check the cephx mds auth access in client side xiubli
2024-02-27 7:27 ` [PATCH v4 1/6] ceph: save the cap_auths in client when session being opened xiubli
2024-02-27 7:27 ` [PATCH v4 2/6] ceph: add ceph_mds_check_access() helper support xiubli
2024-02-27 7:27 ` xiubli [this message]
2024-02-27 7:27 ` [PATCH v4 4/6] ceph: check the cephx mds auth access for open xiubli
2024-02-27 7:27 ` [PATCH v4 5/6] ceph: check the cephx mds auth access for async dirop xiubli
2024-02-27 7:27 ` [PATCH v4 6/6] ceph: add CEPHFS_FEATURE_MDS_AUTH_CAPS_CHECK feature bit xiubli
2024-03-11 5:42 ` [PATCH v4 0/6] ceph: check the cephx mds auth access in client side Venky Shankar
2024-03-12 0:03 ` Xiubo Li
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