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authorRonnie Sahlberg <lsahlber@redhat.com>2020-12-14 16:40:25 +1000
committerSteve French <stfrench@microsoft.com>2020-12-14 09:28:25 -0600
commit2d39f50c2b15bfd197451a967e371dea19f9600b (patch)
tree3623c4c59f9398dbb178a30e7f174ce2f1bc20e5 /fs/cifs/fs_context.c
parent51acd208bd57c82eaa2fda3cab03d62436c6a2ae (diff)
cifs: move update of flags into a separate function
This function will set/clear flags that can be changed during mount or remount Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/fs_context.c')
-rw-r--r--fs/cifs/fs_context.c155
1 files changed, 155 insertions, 0 deletions
diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
index 58da674c0365..29b1dd2b9681 100644
--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -1363,3 +1363,158 @@ smb3_cleanup_fs_context(struct smb3_fs_context *ctx)
smb3_cleanup_fs_context_contents(ctx);
kfree(ctx);
}
+
+void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb)
+{
+ struct smb3_fs_context *ctx = cifs_sb->ctx;
+
+ if (ctx->nodfs)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_DFS;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NO_DFS;
+
+ if (ctx->noperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NO_PERM;
+
+ if (ctx->setuids)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SET_UID;
+
+ if (ctx->setuidfromacl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UID_FROM_ACL;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_UID_FROM_ACL;
+
+ if (ctx->server_ino)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM;
+
+ if (ctx->remap)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SFM_CHR;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_MAP_SFM_CHR;
+
+ if (ctx->sfu_remap)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_MAP_SPECIAL_CHR;
+
+ if (ctx->no_xattr)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NO_XATTR;
+
+ if (ctx->sfu_emul)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_UNX_EMUL;
+
+ if (ctx->nobrl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NO_BRL;
+
+ if (ctx->nohandlecache)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_HANDLE_CACHE;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NO_HANDLE_CACHE;
+
+ if (ctx->nostrictsync)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOSSYNC;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NOSSYNC;
+
+ if (ctx->mand_lock)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NOPOSIXBRL;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_NOPOSIXBRL;
+
+ if (ctx->rwpidforward)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_RWPIDFORWARD;
+
+ if (ctx->mode_ace)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MODE_FROM_SID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_MODE_FROM_SID;
+
+ if (ctx->cifs_acl)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_CIFS_ACL;
+
+ if (ctx->backupuid_specified)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPUID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_CIFS_BACKUPUID;
+
+ if (ctx->backupgid_specified)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPGID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_CIFS_BACKUPGID;
+
+ if (ctx->override_uid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_OVERR_UID;
+
+ if (ctx->override_gid)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_OVERR_GID;
+
+ if (ctx->dynperm)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_DYNPERM;
+
+ if (ctx->fsc)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_FSCACHE;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_FSCACHE;
+
+ if (ctx->multiuser)
+ cifs_sb->mnt_cifs_flags |= (CIFS_MOUNT_MULTIUSER |
+ CIFS_MOUNT_NO_PERM);
+ else
+ cifs_sb->mnt_cifs_flags &= ~(CIFS_MOUNT_MULTIUSER |
+ CIFS_MOUNT_NO_PERM);
+
+ if (ctx->strict_io)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_STRICT_IO;
+
+ if (ctx->direct_io)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_DIRECT_IO;
+
+ if (ctx->mfsymlinks)
+ cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS;
+ else
+ cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_MF_SYMLINKS;
+ if (ctx->mfsymlinks) {
+ if (ctx->sfu_emul) {
+ /*
+ * Our SFU ("Services for Unix" emulation does not allow
+ * creating symlinks but does allow reading existing SFU
+ * symlinks (it does allow both creating and reading SFU
+ * style mknod and FIFOs though). When "mfsymlinks" and
+ * "sfu" are both enabled at the same time, it allows
+ * reading both types of symlinks, but will only create
+ * them with mfsymlinks format. This allows better
+ * Apple compatibility (probably better for Samba too)
+ * while still recognizing old Windows style symlinks.
+ */
+ cifs_dbg(VFS, "mount options mfsymlinks and sfu both enabled\n");
+ }
+ }
+
+ return;
+}