Samba share mode database library external interface library.
Used by non-Samba products needing access to the Samba share mode db.
+ NOTICE FOR SAMBA 4.2.0
+
+ THIS CODE IS NON-FUNCTIONAL IN SAMBA 4.2.0 AND ABOVE DUE TO THE CHANGES IN
+ SHARE MODE DATABASE SCHEMA FOR SMB2 LEASES.
+
+ CONTACT THE AUTHOR jra@samba.org IF YOU WISH TO RE-ENABLE
+ THIS CODE.
+
Copyright (C) Jeremy Allison 2005 - 2006
sharemodes_procid functions (C) Copyright (C) Volker Lendecke 2005
*/
#include "includes.h"
+#include "system/filesys.h"
#include "smb_share_modes.h"
+#include <tdb.h>
+#include "librpc/gen_ndr/open_files.h"
/* Database context handle. */
struct smbdb_ctx {
#undef malloc
#endif
+/*
+ * Internal structure of locking.tdb share mode db.
+ * Used by locking.c and libsmbsharemodes.c
+ */
+
+struct locking_data {
+ union {
+ struct {
+ int num_share_mode_entries;
+ struct timespec old_write_time;
+ struct timespec changed_write_time;
+ uint32_t num_delete_token_entries;
+ } s;
+ struct share_mode_entry dummy; /* Needed for alignment. */
+ } u;
+ /* The following four entries are implicit
+
+ (1) struct share_mode_entry modes[num_share_mode_entries];
+
+ (2) A num_delete_token_entries of structs {
+ uint32_t len_delete_token;
+ char unix_token[len_delete_token] (divisible by 4).
+ };
+
+ (3) char share_name[];
+ (4) char file_name[];
+ */
+};
+
int smb_create_share_mode_entry_ex(struct smbdb_ctx *db_ctx, uint64_t dev,
- uint64_t ino, const struct smb_share_mode_entry *new_entry,
+ uint64_t ino, uint64_t extid,
+ const struct smb_share_mode_entry *new_entry,
const char *sharepath, const char *filename);
static bool sharemodes_procid_equal(const struct server_id *p1, const struct server_id *p2)
memset(smb_db, '\0', sizeof(struct smbdb_ctx));
+ /* FIXME: We should *never* open a tdb without logging! */
smb_db->smb_tdb = tdb_open(db_path,
- 0, TDB_DEFAULT|TDB_CLEAR_IF_FIRST,
- O_RDWR|O_CREAT,
- 0644);
+ 0, TDB_DEFAULT|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
+ O_RDWR|O_CREAT,
+ 0644);
if (!smb_db->smb_tdb) {
free(smb_db);
struct locking_key {
SMB_DEV_T dev;
SMB_INO_T inode;
+ uint64_t extid;
};
int smb_share_mode_db_close(struct smbdb_ctx *db_ctx)
}
static TDB_DATA get_locking_key(struct locking_key *lk, uint64_t dev,
- uint64_t ino)
+ uint64_t ino, uint64_t extid)
{
TDB_DATA ld;
memset(lk, '\0', sizeof(*lk));
lk->dev = (SMB_DEV_T)dev;
lk->inode = (SMB_INO_T)ino;
- ld.dptr = (uint8 *)lk;
+ lk->extid = extid;
+ ld.dptr = (uint8_t *)lk;
ld.dsize = sizeof(*lk);
return ld;
}
int smb_lock_share_mode_entry(struct smbdb_ctx *db_ctx,
uint64_t dev,
- uint64_t ino)
+ uint64_t ino,
+ uint64_t extid)
{
struct locking_key lk;
- return tdb_chainlock(db_ctx->smb_tdb, get_locking_key(&lk, dev, ino));
+ return tdb_chainlock(db_ctx->smb_tdb, get_locking_key(&lk, dev, ino,
+ extid)) == 0 ? 0 : -1;
}
int smb_unlock_share_mode_entry(struct smbdb_ctx *db_ctx,
uint64_t dev,
- uint64_t ino)
+ uint64_t ino,
+ uint64_t extid)
{
struct locking_key lk;
- return tdb_chainunlock(db_ctx->smb_tdb,
- get_locking_key(&lk, dev, ino));
+ tdb_chainunlock(db_ctx->smb_tdb,
+ get_locking_key(&lk, dev, ino, extid));
+ return 0;
}
/*
e_entry->share_access == (uint32_t)entry->share_access &&
e_entry->access_mask == (uint32_t)entry->access_mask &&
e_entry->dev == entry->id.devid &&
- e_entry->ino == entry->id.inode);
+ e_entry->ino == entry->id.inode &&
+ e_entry->extid == entry->id.extid);
}
/*
*/
static void create_share_mode_entry(struct share_mode_entry *out,
- const struct smb_share_mode_entry *in)
+ const struct smb_share_mode_entry *in,
+ uint32_t name_hash)
{
memset(out, '\0', sizeof(struct share_mode_entry));
out->access_mask = in->access_mask;
out->id.devid = in->dev;
out->id.inode = in->ino;
- out->uid = (uint32)geteuid();
+ out->id.extid = in->extid;
+ out->uid = (uint32_t)geteuid();
out->flags = 0;
+ out->name_hash = name_hash;
}
/*
int smb_get_share_mode_entries(struct smbdb_ctx *db_ctx,
uint64_t dev,
uint64_t ino,
+ uint64_t extid,
struct smb_share_mode_entry **pp_list,
unsigned char *p_delete_on_close)
{
*pp_list = NULL;
*p_delete_on_close = 0;
- db_data = tdb_fetch(db_ctx->smb_tdb, get_locking_key(&lk, dev, ino));
+ db_data = tdb_fetch(db_ctx->smb_tdb,
+ get_locking_key(&lk, dev, ino, extid));
if (!db_data.dptr) {
return 0;
}
continue; /* No longer exists. */
}
- /* Ignore deferred open entries. */
- if (share->op_type == DEFERRED_OPEN_ENTRY) {
- continue;
- }
-
/* Copy into the external list. */
sme->dev = share->id.devid;
sme->ino = share->id.inode;
+ sme->extid = share->id.extid;
sme->share_access = (uint32_t)share->share_access;
sme->access_mask = (uint32_t)share->access_mask;
sme->open_time.tv_sec = share->time.tv_sec;
return 0;
}
- *p_delete_on_close = ld->u.s.delete_on_close;
+ *p_delete_on_close = ld->u.s.num_delete_token_entries != 0;
*pp_list = list;
free(db_data.dptr);
return list_num;
}
+static uint32_t smb_name_hash(const char *sharepath, const char *filename, int *err)
+{
+ char *fullpath = NULL;
+ size_t sharepath_size = strlen(sharepath);
+ size_t filename_size = strlen(filename);
+ uint32_t name_hash;
+ TDB_DATA key;
+
+ *err = 0;
+ fullpath = (char *)malloc(sharepath_size + filename_size + 2);
+ if (fullpath == NULL) {
+ *err = 1;
+ return 0;
+ }
+ memcpy(fullpath, sharepath, sharepath_size);
+ fullpath[sharepath_size] = '/';
+ memcpy(&fullpath[sharepath_size + 1], filename, filename_size + 1);
+
+ key = (TDB_DATA) { .dptr = (uint8_t *)fullpath,
+ .dsize = strlen(fullpath) + 1 };
+ name_hash = tdb_jenkins_hash(&key);
+ free(fullpath);
+ return name_hash;
+}
+
/*
* Create an entry in the Samba share mode db.
*/
int smb_create_share_mode_entry_ex(struct smbdb_ctx *db_ctx,
uint64_t dev,
uint64_t ino,
+ uint64_t extid,
const struct smb_share_mode_entry *new_entry,
const char *sharepath, /* Must be absolute utf8 path. */
const char *filename) /* Must be relative utf8 path. */
{
TDB_DATA db_data;
struct locking_key lk;
- TDB_DATA locking_key = get_locking_key(&lk, dev, ino);
+ TDB_DATA locking_key = get_locking_key(&lk, dev, ino, extid);
int orig_num_share_modes = 0;
struct locking_data *ld = NULL; /* internal samba db state. */
struct share_mode_entry *shares = NULL;
- uint8 *new_data_p = NULL;
+ uint8_t *new_data_p = NULL;
size_t new_data_size = 0;
+ int err = 0;
+ uint32_t name_hash = smb_name_hash(sharepath, filename, &err);
+
+ if (err) {
+ return -1;
+ }
db_data = tdb_fetch(db_ctx->smb_tdb, locking_key);
if (!db_data.dptr) {
/* We must create the entry. */
- db_data.dptr = (uint8 *)malloc(
+ db_data.dptr = (uint8_t *)malloc(
sizeof(struct locking_data) +
sizeof(struct share_mode_entry) +
strlen(sharepath) + 1 +
ld = (struct locking_data *)db_data.dptr;
memset(ld, '\0', sizeof(struct locking_data));
ld->u.s.num_share_mode_entries = 1;
- ld->u.s.delete_on_close = 0;
- ld->u.s.delete_token_size = 0;
+ ld->u.s.num_delete_token_entries = 0;
shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct locking_data));
- create_share_mode_entry(shares, new_entry);
+ create_share_mode_entry(shares, new_entry, name_hash);
memcpy(db_data.dptr + sizeof(struct locking_data) + sizeof(struct share_mode_entry),
sharepath,
db_data.dsize = sizeof(struct locking_data) + sizeof(struct share_mode_entry) +
strlen(sharepath) + 1 +
strlen(filename) + 1;
- if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_INSERT) == -1) {
+ if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_INSERT) != 0) {
free(db_data.dptr);
return -1;
}
}
/* Entry exists, we must add a new entry. */
- new_data_p = (uint8 *)malloc(
+ new_data_p = (uint8_t *)malloc(
db_data.dsize + sizeof(struct share_mode_entry));
if (!new_data_p) {
free(db_data.dptr);
shares = (struct share_mode_entry *)(new_data_p + sizeof(struct locking_data) +
(orig_num_share_modes * sizeof(struct share_mode_entry)));
- create_share_mode_entry(shares, new_entry);
+ create_share_mode_entry(shares, new_entry, name_hash);
ld = (struct locking_data *)new_data_p;
ld->u.s.num_share_mode_entries++;
- /* Append the original delete_token and filenames. */
+ /* Append the original delete_tokens and filenames. */
memcpy(new_data_p + sizeof(struct locking_data) + (ld->u.s.num_share_mode_entries * sizeof(struct share_mode_entry)),
db_data.dptr + sizeof(struct locking_data) + (orig_num_share_modes * sizeof(struct share_mode_entry)),
db_data.dsize - sizeof(struct locking_data) - (orig_num_share_modes * sizeof(struct share_mode_entry)));
db_data.dptr = new_data_p;
db_data.dsize = new_data_size;
- if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) == -1) {
+ if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) != 0) {
free(db_data.dptr);
return -1;
}
int smb_create_share_mode_entry(struct smbdb_ctx *db_ctx,
uint64_t dev,
uint64_t ino,
+ uint64_t extid,
const struct smb_share_mode_entry *new_entry,
const char *filename) /* Must be absolute utf8 path. */
{
if (*filename != '/') {
abort();
}
- return smb_create_share_mode_entry_ex(db_ctx, dev, ino, new_entry,
+ return smb_create_share_mode_entry_ex(db_ctx, dev, ino, extid, new_entry,
"/", &filename[1]);
}
int smb_delete_share_mode_entry(struct smbdb_ctx *db_ctx,
uint64_t dev,
uint64_t ino,
+ uint64_t extid,
const struct smb_share_mode_entry *del_entry)
{
TDB_DATA db_data;
struct locking_key lk;
- TDB_DATA locking_key = get_locking_key(&lk, dev, ino);
+ TDB_DATA locking_key = get_locking_key(&lk, dev, ino, extid);
int orig_num_share_modes = 0;
struct locking_data *ld = NULL; /* internal samba db state. */
struct share_mode_entry *shares = NULL;
- uint8 *new_data_p = NULL;
+ uint8_t *new_data_p = NULL;
size_t remaining_size = 0;
size_t i, num_share_modes;
- const uint8 *remaining_ptr = NULL;
+ const uint8_t *remaining_ptr = NULL;
db_data = tdb_fetch(db_ctx->smb_tdb, locking_key);
if (!db_data.dptr) {
}
/* It's ours - just remove the entire record. */
free(db_data.dptr);
- return tdb_delete(db_ctx->smb_tdb, locking_key);
+ return tdb_delete(db_ctx->smb_tdb, locking_key) ? -1 : 0;
}
/* More than one - allocate a new record minus the one we'll delete. */
- new_data_p = (uint8 *)malloc(
+ new_data_p = (uint8_t *)malloc(
db_data.dsize - sizeof(struct share_mode_entry));
if (!new_data_p) {
free(db_data.dptr);
/* None left after pruning. Delete record. */
free(db_data.dptr);
free(new_data_p);
- return tdb_delete(db_ctx->smb_tdb, locking_key);
+ return tdb_delete(db_ctx->smb_tdb, locking_key) ? -1 : 0;
}
- /* Copy any delete token plus the terminating filenames. */
+ /* Copy any delete tokens plus the terminating filenames. */
remaining_ptr = db_data.dptr + sizeof(struct locking_data) + (orig_num_share_modes * sizeof(struct share_mode_entry));
remaining_size = db_data.dsize - (remaining_ptr - db_data.dptr);
db_data.dsize = sizeof(struct locking_data) + (num_share_modes * sizeof(struct share_mode_entry)) + remaining_size;
- if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) == -1) {
+ if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) != 0) {
free(db_data.dptr);
return -1;
}
int smb_change_share_mode_entry(struct smbdb_ctx *db_ctx,
uint64_t dev,
uint64_t ino,
+ uint64_t extid,
const struct smb_share_mode_entry *set_entry,
const struct smb_share_mode_entry *new_entry)
{
TDB_DATA db_data;
struct locking_key lk;
- TDB_DATA locking_key = get_locking_key(&lk, dev, ino);
+ TDB_DATA locking_key = get_locking_key(&lk, dev, ino, extid);
int num_share_modes = 0;
struct locking_data *ld = NULL; /* internal samba db state. */
struct share_mode_entry *shares = NULL;
}
if (share_mode_entry_equal(set_entry, share)) {
- create_share_mode_entry(share, new_entry);
+ create_share_mode_entry(share, new_entry, share->name_hash);
found_entry = 1;
break;
}
}
/* Save modified data. */
- if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) == -1) {
+ if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_REPLACE) != 0) {
free(db_data.dptr);
return -1;
}
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff