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s3: VFS: Make rmdir return errno = EROFS on a shadow copy path.

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smbd has no business modifying a shadow copy filesystem, it should be read-only.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This commit is contained in:
Jeremy Allison 2019-08-01 13:33:27 -07:00 committed by Ralph Boehme
parent 9d35f74766
commit d81570e5fb
1 changed files with 4 additions and 31 deletions
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35
source3/modules/vfs_shadow_copy2.c
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@ -2265,46 +2265,19 @@ static int shadow_copy2_rmdir(vfs_handle_struct *handle,
const struct smb_filename *smb_fname)
{
time_t timestamp = 0;
char *stripped = NULL;
int saved_errno = 0;
int ret;
char *conv;
struct smb_filename *conv_smb_fname = NULL;
if (!shadow_copy2_strip_snapshot(talloc_tos(),
handle,
smb_fname->base_name,
&timestamp,
&stripped)) {
NULL)) {
return -1;
}
if (timestamp == 0) {
return SMB_VFS_NEXT_RMDIR(handle, smb_fname);
}
conv = shadow_copy2_convert(talloc_tos(), handle, stripped, timestamp);
TALLOC_FREE(stripped);
if (conv == NULL) {
if (timestamp != 0) {
errno = EROFS;
return -1;
}
conv_smb_fname = synthetic_smb_fname(talloc_tos(),
conv,
NULL,
NULL,
smb_fname->flags);
if (conv_smb_fname == NULL) {
TALLOC_FREE(conv);
return -1;
}
ret = SMB_VFS_NEXT_RMDIR(handle, conv_smb_fname);
if (ret == -1) {
saved_errno = errno;
}
TALLOC_FREE(conv_smb_fname);
TALLOC_FREE(conv);
if (saved_errno != 0) {
errno = saved_errno;
}
return ret;
return SMB_VFS_NEXT_RMDIR(handle, smb_fname);
}
static int shadow_copy2_chflags(vfs_handle_struct *handle,