diff options
| author |   Steve French <stfrench@microsoft.com> | 2018-05-20 23:41:10 -0500 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2018-05-30 16:06:18 -0500 |
| commit | b326614ea2159ea5c835d320f261d05d080cd201 (patch) | |
| tree | 8ae0dbfeee7e85b80d944e2149f4aa529e94015c /fs/cifs/connect.c | |
| parent | smb3: add support for posix negotiate context (diff) | |
| download | linux-dev-b326614ea2159ea5c835d320f261d05d080cd201.tar.xz linux-dev-b326614ea2159ea5c835d320f261d05d080cd201.zip | |
smb3: allow "posix" mount option to enable new SMB311 protocol extensions
If "posix" (or synonym "unix" for backward compatibility) specified on mount,
and server advertises support for SMB3.11 POSIX negotiate context, then
enable the new posix extensions on the tcon. This can be viewed by
looking for "posix" in the mount options displayed by /proc/mounts
for that mount (ie if posix extensions allowed by server and the
experimental POSIX extensions also requested on the mount by specifying
"posix" at mount time).
Also add check to warn user if conflicting unix/nounix or posix/noposix specified
on mount.
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/cifs/connect.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index ed3b6de88395..4c0e3f6ae356 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -77,7 +77,7 @@ enum { Opt_mapposix, Opt_nomapposix, Opt_mapchars, Opt_nomapchars, Opt_sfu, Opt_nosfu, Opt_nodfs, Opt_posixpaths, - Opt_noposixpaths, Opt_nounix, + Opt_noposixpaths, Opt_nounix, Opt_unix, Opt_nocase, Opt_brl, Opt_nobrl, Opt_handlecache, Opt_nohandlecache, @@ -146,6 +146,10 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_noposixpaths, "noposixpaths" }, { Opt_nounix, "nounix" }, { Opt_nounix, "nolinux" }, + { Opt_nounix, "noposix" }, + { Opt_unix, "unix" }, + { Opt_unix, "linux" }, + { Opt_unix, "posix" }, { Opt_nocase, "nocase" }, { Opt_nocase, "ignorecase" }, { Opt_brl, "brl" }, @@ -1438,8 +1442,17 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, vol->posix_paths = 0; break; case Opt_nounix: + if (vol->linux_ext) + cifs_dbg(VFS, + "conflicting unix mount options\n"); vol->no_linux_ext = 1; break; + case Opt_unix: + if (vol->no_linux_ext) + cifs_dbg(VFS, + "conflicting unix mount options\n"); + vol->linux_ext = 1; + break; case Opt_nocase: vol->nocase = 1; break; @@ -2985,6 +2998,13 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) } } +#ifdef CONFIG_CIFS_SMB311 + if ((volume_info->linux_ext) && (ses->server->posix_ext_supported)) { + if (ses->server->vals->protocol_id == SMB311_PROT_ID) + tcon->posix_extensions = true; + } +#endif /* 311 */ + /* * BB Do we need to wrap session_mutex around this TCon call and Unix * SetFS as we do on SessSetup and reconnect? @@ -4406,6 +4426,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) if (cap_unix(ses)) reset_cifs_unix_caps(0, tcon, NULL, vol_info); + out: kfree(vol_info->username); kzfree(vol_info->password); |