The branch, v4-21-test has been updated
via 84d23c82272 vfs_ceph_snapshots: Always calculate absolute snapshot
path
via c7164448f15 vfs_ceph_snapshots: Use full path from dirfsp at
smb_fname
from 8743dd673af lib/krb5_wrap: Fix placement of TALLOC_FREE(frame)
https://git.samba.org/?p=samba.git;a=shortlog;h=v4-21-test
- Log -----------------------------------------------------------------
commit 84d23c82272ea77f6bab16ff8dbec43c016ae9af
Author: Anoop C S <anoo...@samba.org>
Date: Tue Mar 4 16:15:05 2025 +0530
vfs_ceph_snapshots: Always calculate absolute snapshot path
Use the same logic from shadow_copy2 module to always prepend the
connectpath to the relative snapshot path so as to return converted
path corresponding to the file's share root.
Please note that with the current working directory staying at the
connectpath level we are safe to prefix it to the smb_filename. In
other words it seems we never get past the connectpath internally
during normal file system operations via chdir(). Since all relative
paths are now based on dirfsp we could constitute absolute path by
prepending the connectpath to full_path_from_dirfsp_atname() output
ignoring the current working directory.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15819
Signed-off-by: Anoop C S <anoo...@samba.org>
Reviewed-by: David Disseldorp <dd...@samba.org>
Autobuild-User(master): Anoop C S <anoo...@samba.org>
Autobuild-Date(master): Wed Apr 30 11:32:59 UTC 2025 on atb-devel-224
(cherry picked from commit 95a2b50b1983a6ba810a96f50b27db7c992c02c0)
Autobuild-User(v4-21-test): Jule Anger <jan...@samba.org>
Autobuild-Date(v4-21-test): Thu May 8 12:46:14 UTC 2025 on atb-devel-224
commit c7164448f1587185eca5f2e02dbad31e3fc7311b
Author: Anoop C S <anoo...@samba.org>
Date: Tue Mar 4 15:09:33 2025 +0530
vfs_ceph_snapshots: Use full path from dirfsp at smb_fname
In ceph_snap_gmt_openat() we hand in the incoming smb_fname as it is
to ceph_snap_gmt_strip_snapshot() which is then passed on to derive
the actual snapshot path using ceph_snap_gmt_convert(). But this can
go wrong in ceph_snap_gmt_convert_dir() while opening the snapdir.
Unless we constitute the full path from dirfsp at the first place we
always end up opening the snapdir from the parent directory with
OpenDir().
For example with dirfsp("foobar") and smb_fname("shift.txt"), we open
snapdir from share root because parent is calculated as empty string
via ceph_snap_get_parent_path(). Instead we could construct the full
path from dirfsp using full_path_from_dirfsp_atname() to ensure we
don't open the wrong snapdir.
Since we have access to the twrp token at VFS layer it doesn't make
much sense to make use of ceph_snap_gmt_strip_snapshot() in openat.
We could instead directly act based on already available twrp token
avoiding an extra copy of incoming smb_filename.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15819
Signed-off-by: Anoop C S <anoo...@samba.org>
Reviewed-by: David Disseldorp dd...@samba.org
(cherry picked from commit ad8b2dbb67d87db22f2fa2df814dd91cbe071e60)
-----------------------------------------------------------------------
Summary of changes:
source3/modules/vfs_ceph_snapshots.c | 36 ++++++++++++++++++------------------
1 file changed, 18 insertions(+), 18 deletions(-)
Changeset truncated at 500 lines:
diff --git a/source3/modules/vfs_ceph_snapshots.c
b/source3/modules/vfs_ceph_snapshots.c
index 98b8f5f6b5d..f5ba0752614 100644
--- a/source3/modules/vfs_ceph_snapshots.c
+++ b/source3/modules/vfs_ceph_snapshots.c
@@ -531,10 +531,13 @@ static int ceph_snap_gmt_convert_dir(struct
vfs_handle_struct *handle,
* Temporally use the caller's return buffer for this.
*/
if (strlen(name) == 0) {
- ret = strlcpy(_converted_buf, snapdir, buflen);
+ ret = snprintf(_converted_buf, buflen, "%s/%s",
+ handle->conn->connectpath, snapdir);
} else {
- ret = snprintf(_converted_buf, buflen, "%s/%s", name, snapdir);
+ ret = snprintf(_converted_buf, buflen, "%s/%s/%s",
+ handle->conn->connectpath, name, snapdir);
}
+
if (ret >= buflen) {
ret = -EINVAL;
goto err_out;
@@ -938,21 +941,11 @@ static int ceph_snap_gmt_openat(vfs_handle_struct *handle,
{
time_t timestamp = 0;
struct smb_filename *smb_fname = NULL;
- char stripped[PATH_MAX + 1];
char conv[PATH_MAX + 1];
int ret;
int saved_errno = 0;
- ret = ceph_snap_gmt_strip_snapshot(handle,
- smb_fname_in,
- ×tamp,
- stripped,
- sizeof(stripped));
- if (ret < 0) {
- errno = -ret;
- return -1;
- }
- if (timestamp == 0) {
+ if (smb_fname_in->twrp == 0) {
return SMB_VFS_NEXT_OPENAT(handle,
dirfsp,
smb_fname_in,
@@ -960,8 +953,18 @@ static int ceph_snap_gmt_openat(vfs_handle_struct *handle,
how);
}
+ timestamp = nt_time_to_unix(smb_fname_in->twrp);
+
+ smb_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname_in);
+ if (smb_fname == NULL) {
+ errno = ENOMEM;
+ return -1;
+ }
+
ret = ceph_snap_gmt_convert(handle,
- stripped,
+ smb_fname->base_name,
timestamp,
conv,
sizeof(conv));
@@ -969,10 +972,7 @@ static int ceph_snap_gmt_openat(vfs_handle_struct *handle,
errno = -ret;
return -1;
}
- smb_fname = cp_smb_filename(talloc_tos(), smb_fname_in);
- if (smb_fname == NULL) {
- return -1;
- }
+
smb_fname->base_name = conv;
ret = SMB_VFS_NEXT_OPENAT(handle,
--
Samba Shared Repository
