summaryrefslogtreecommitdiffstats
path: root/fs/smb/client/dfs_cache.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /fs/smb/client/dfs_cache.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/smb/client/dfs_cache.h')
-rw-r--r--fs/smb/client/dfs_cache.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/fs/smb/client/dfs_cache.h b/fs/smb/client/dfs_cache.h
new file mode 100644
index 000000000..52070d1df
--- /dev/null
+++ b/fs/smb/client/dfs_cache.h
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * DFS referral cache routines
+ *
+ * Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
+ */
+
+#ifndef _CIFS_DFS_CACHE_H
+#define _CIFS_DFS_CACHE_H
+
+#include <linux/nls.h>
+#include <linux/list.h>
+#include <linux/uuid.h>
+#include "cifsglob.h"
+
+#define DFS_CACHE_TGT_LIST_INIT(var) { .tl_numtgts = 0, .tl_list = LIST_HEAD_INIT((var).tl_list), }
+
+struct dfs_cache_tgt_list {
+ int tl_numtgts;
+ struct list_head tl_list;
+};
+
+struct dfs_cache_tgt_iterator {
+ char *it_name;
+ int it_path_consumed;
+ struct list_head it_list;
+};
+
+int dfs_cache_init(void);
+void dfs_cache_destroy(void);
+extern const struct proc_ops dfscache_proc_ops;
+
+int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses, const struct nls_table *cp,
+ int remap, const char *path, struct dfs_info3_param *ref,
+ struct dfs_cache_tgt_list *tgt_list);
+int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,
+ struct dfs_cache_tgt_list *tgt_list);
+int dfs_cache_update_tgthint(const unsigned int xid, struct cifs_ses *ses,
+ const struct nls_table *cp, int remap, const char *path,
+ const struct dfs_cache_tgt_iterator *it);
+int dfs_cache_noreq_update_tgthint(const char *path, const struct dfs_cache_tgt_iterator *it);
+int dfs_cache_get_tgt_referral(const char *path, const struct dfs_cache_tgt_iterator *it,
+ struct dfs_info3_param *ref);
+int dfs_cache_get_tgt_share(char *path, const struct dfs_cache_tgt_iterator *it, char **share,
+ char **prefix);
+void dfs_cache_put_refsrv_sessions(const uuid_t *mount_id);
+void dfs_cache_add_refsrv_session(const uuid_t *mount_id, struct cifs_ses *ses);
+char *dfs_cache_canonical_path(const char *path, const struct nls_table *cp, int remap);
+int dfs_cache_remount_fs(struct cifs_sb_info *cifs_sb);
+
+static inline struct dfs_cache_tgt_iterator *
+dfs_cache_get_next_tgt(struct dfs_cache_tgt_list *tl,
+ struct dfs_cache_tgt_iterator *it)
+{
+ if (!tl || list_empty(&tl->tl_list) || !it ||
+ list_is_last(&it->it_list, &tl->tl_list))
+ return NULL;
+ return list_next_entry(it, it_list);
+}
+
+static inline struct dfs_cache_tgt_iterator *
+dfs_cache_get_tgt_iterator(struct dfs_cache_tgt_list *tl)
+{
+ if (!tl)
+ return NULL;
+ return list_first_entry_or_null(&tl->tl_list,
+ struct dfs_cache_tgt_iterator,
+ it_list);
+}
+
+static inline void dfs_cache_free_tgts(struct dfs_cache_tgt_list *tl)
+{
+ struct dfs_cache_tgt_iterator *it, *nit;
+
+ if (!tl || list_empty(&tl->tl_list))
+ return;
+ list_for_each_entry_safe(it, nit, &tl->tl_list, it_list) {
+ list_del(&it->it_list);
+ kfree(it->it_name);
+ kfree(it);
+ }
+ tl->tl_numtgts = 0;
+}
+
+static inline const char *
+dfs_cache_get_tgt_name(const struct dfs_cache_tgt_iterator *it)
+{
+ return it ? it->it_name : NULL;
+}
+
+static inline int
+dfs_cache_get_nr_tgts(const struct dfs_cache_tgt_list *tl)
+{
+ return tl ? tl->tl_numtgts : 0;
+}
+
+#endif /* _CIFS_DFS_CACHE_H */