cifs: fix DFS mount with cifsacl/modefromsid
[ Upstream commit 01ec372cef
]
RHBZ: 1871246
If during cifs_lookup()/get_inode_info() we encounter a DFS link
and we use the cifsacl or modefromsid mount options we must suppress
any -EREMOTE errors that triggers or else we will not be able to follow
the DFS link and automount the target.
This fixes an issue with modefromsid/cifsacl where these mountoptions
would break DFS and we would no longer be able to access the share.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
parent
72efc1488d
commit
5dda8b9b6a
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@ -898,6 +898,8 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
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if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MODE_FROM_SID) {
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rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, true,
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full_path, fid);
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if (rc == -EREMOTE)
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rc = 0;
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if (rc) {
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cifs_dbg(FYI, "%s: Get mode from SID failed. rc=%d\n",
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__func__, rc);
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@ -906,6 +908,8 @@ cifs_get_inode_info(struct inode **inode, const char *full_path,
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} else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
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rc = cifs_acl_to_fattr(cifs_sb, &fattr, *inode, false,
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full_path, fid);
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if (rc == -EREMOTE)
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rc = 0;
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if (rc) {
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cifs_dbg(FYI, "%s: Getting ACL failed with error: %d\n",
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__func__, rc);
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