/*
Samba share mode database library external interface library.
Used by non-Samba products needing access to the Samba share mode db.
-
- Copyright (C) Jeremy Allison 2005.
+
+ 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
** NOTE! The following LGPL license applies to this module only.
** This does NOT imply that all of Samba is released
** under the LGPL
-
+
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
+ version 3 of the License, or (at your option) any later version.
+
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
-
+
You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#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 {
+ TDB_CONTEXT *smb_tdb;
+};
/* Remove the paranoid malloc checker. */
#ifdef malloc
#undef malloc
#endif
-static BOOL sharemodes_procid_equal(const struct process_id *p1, const struct process_id *p2)
+/*
+ * 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, 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)
{
return (p1->pid == p2->pid);
}
-static pid_t sharemodes_procid_to_pid(const struct process_id *proc)
+static pid_t sharemodes_procid_to_pid(const struct server_id *proc)
{
return proc->pid;
}
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)
return ret;
}
-static TDB_DATA get_locking_key(uint64_t dev, uint64_t ino)
+static TDB_DATA get_locking_key(struct locking_key *lk, uint64_t dev,
+ uint64_t ino, uint64_t extid)
{
- static struct locking_key lk;
TDB_DATA ld;
- memset(&lk, '\0', sizeof(struct locking_key));
- lk.dev = (SMB_DEV_T)dev;
- lk.inode = (SMB_INO_T)ino;
- ld.dptr = (char *)&lk;
- ld.dsize = sizeof(lk);
+ memset(lk, '\0', sizeof(*lk));
+ lk->dev = (SMB_DEV_T)dev;
+ lk->inode = (SMB_INO_T)ino;
+ 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)
{
- return tdb_chainlock(db_ctx->smb_tdb, get_locking_key(dev, ino));
+ struct locking_key lk;
+ 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)
{
- return tdb_chainunlock(db_ctx->smb_tdb, get_locking_key(dev, ino));
+ struct locking_key lk;
+ tdb_chainunlock(db_ctx->smb_tdb,
+ get_locking_key(&lk, dev, ino, extid));
+ return 0;
}
-/* Internal structure of Samba share mode db. */
-/* FIXME ! This should be moved into a Samba include file. */
-
-struct locking_data {
- union {
- struct {
- int num_share_mode_entries;
- BOOL delete_on_close;
- } s;
- struct share_mode_entry dummy; /* Needed for alignment. */
- } u;
- /* the following two entries are implicit
- struct share_mode_entry modes[num_share_mode_entries];
- char file_name[];
- */
-};
-
/*
* Check if an external smb_share_mode_entry and an internal share_mode entry match.
*/
-static int share_mode_entry_equal(const struct smb_share_mode_entry *e_entry, const struct share_mode_entry *entry)
+static int share_mode_entry_equal(const struct smb_share_mode_entry *e_entry,
+ const struct share_mode_entry *entry)
{
return (sharemodes_procid_equal(&e_entry->pid, &entry->pid) &&
e_entry->file_id == (uint32_t)entry->share_file_id &&
e_entry->open_time.tv_usec == entry->time.tv_usec &&
e_entry->share_access == (uint32_t)entry->share_access &&
e_entry->access_mask == (uint32_t)entry->access_mask &&
- e_entry->dev == (uint64_t)entry->dev &&
- e_entry->ino == (uint64_t)entry->inode);
+ e_entry->dev == entry->id.devid &&
+ e_entry->ino == entry->id.inode &&
+ e_entry->extid == entry->id.extid);
}
/*
* Create an internal Samba share_mode entry from an external smb_share_mode_entry.
*/
-static void create_share_mode_entry(struct share_mode_entry *out, const struct smb_share_mode_entry *in)
+static void create_share_mode_entry(struct share_mode_entry *out,
+ const struct smb_share_mode_entry *in,
+ uint32_t name_hash)
{
memset(out, '\0', sizeof(struct share_mode_entry));
out->time.tv_usec = in->open_time.tv_usec;
out->share_access = in->share_access;
out->access_mask = in->access_mask;
- out->dev = (SMB_DEV_T)in->dev;
- out->inode = (SMB_INO_T)in->ino;
+ out->id.devid = in->dev;
+ out->id.inode = in->ino;
+ 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)
{
+ struct locking_key lk;
TDB_DATA db_data;
struct smb_share_mode_entry *list = NULL;
int num_share_modes = 0;
*pp_list = NULL;
*p_delete_on_close = 0;
- db_data = tdb_fetch(db_ctx->smb_tdb, get_locking_key(dev, ino));
+ db_data = tdb_fetch(db_ctx->smb_tdb,
+ get_locking_key(&lk, dev, ino, extid));
if (!db_data.dptr) {
return 0;
}
memset(list, '\0', num_share_modes * sizeof(struct smb_share_mode_entry));
- shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct share_mode_entry));
+ shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct locking_data));
list_num = 0;
for (i = 0; i < num_share_modes; i++) {
struct share_mode_entry *share = &shares[i];
struct smb_share_mode_entry *sme = &list[list_num];
- struct process_id pid = share->pid;
+ struct server_id pid = share->pid;
/* Check this process really exists. */
if (kill(sharemodes_procid_to_pid(&pid), 0) == -1 && (errno == ESRCH)) {
continue; /* No longer exists. */
}
- /* Ignore deferred open entries. */
- if (share->op_type == DEFERRED_OPEN_ENTRY) {
- continue;
- }
-
/* Copy into the external list. */
- sme->dev = (uint64_t)share->dev;
- sme->ino = (uint64_t)share->inode;
+ 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(struct smbdb_ctx *db_ctx,
+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 *filename) /* Must be abolute utf8 path. */
+ const char *sharepath, /* Must be absolute utf8 path. */
+ const char *filename) /* Must be relative utf8 path. */
{
TDB_DATA db_data;
- TDB_DATA locking_key = get_locking_key(dev, ino);
+ struct locking_key lk;
+ 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;
- char *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 = malloc((2*sizeof(struct share_mode_entry)) + strlen(filename) + 1);
+ db_data.dptr = (uint8_t *)malloc(
+ sizeof(struct locking_data) +
+ sizeof(struct share_mode_entry) +
+ strlen(sharepath) + 1 +
+ strlen(filename) + 1);
if (!db_data.dptr) {
return -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;
- shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct share_mode_entry));
- create_share_mode_entry(shares, new_entry);
- memcpy(db_data.dptr + 2*sizeof(struct share_mode_entry),
+ 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, name_hash);
+
+ memcpy(db_data.dptr + sizeof(struct locking_data) + sizeof(struct share_mode_entry),
+ sharepath,
+ strlen(sharepath) + 1);
+ memcpy(db_data.dptr + sizeof(struct locking_data) + sizeof(struct share_mode_entry) +
+ strlen(sharepath) + 1,
filename,
strlen(filename) + 1);
- db_data.dsize = 2*sizeof(struct share_mode_entry) + strlen(filename) + 1;
- if (tdb_store(db_ctx->smb_tdb, locking_key, db_data, TDB_INSERT) == -1) {
+ 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) != 0) {
free(db_data.dptr);
return -1;
}
}
/* Entry exists, we must add a new entry. */
- new_data_p = malloc(db_data.dsize + sizeof(struct share_mode_entry));
+ new_data_p = (uint8_t *)malloc(
+ db_data.dsize + sizeof(struct share_mode_entry));
if (!new_data_p) {
free(db_data.dptr);
return -1;
orig_num_share_modes = ld->u.s.num_share_mode_entries;
/* Copy the original data. */
- memcpy(new_data_p, db_data.dptr, (orig_num_share_modes+1)*sizeof(struct share_mode_entry));
+ memcpy(new_data_p, db_data.dptr, sizeof(struct locking_data) + (orig_num_share_modes * sizeof(struct share_mode_entry)));
/* Add in the new share mode */
- shares = (struct share_mode_entry *)(new_data_p +
- ((orig_num_share_modes+1)*sizeof(struct share_mode_entry)));
+ 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 filename */
- memcpy(new_data_p + ((ld->u.s.num_share_mode_entries+1)*sizeof(struct share_mode_entry)),
- db_data.dptr + ((orig_num_share_modes+1)*sizeof(struct share_mode_entry)),
- db_data.dsize - ((orig_num_share_modes+1) * sizeof(struct share_mode_entry)));
+ /* 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)));
new_data_size = db_data.dsize + 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;
}
return 0;
}
+/*
+ * Create an entry in the Samba share mode db. Original interface - doesn't
+ * Distinguish between share path and filename. Fudge this by using a
+ * sharepath of / and a relative filename of (filename+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, 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;
- TDB_DATA locking_key = get_locking_key(dev, ino);
+ struct locking_key lk;
+ 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;
- char *new_data_p = NULL;
- size_t filename_size = 0;
+ uint8_t *new_data_p = NULL;
+ size_t remaining_size = 0;
size_t i, num_share_modes;
- const char *fname_ptr = NULL;
+ const uint8_t *remaining_ptr = NULL;
db_data = tdb_fetch(db_ctx->smb_tdb, locking_key);
if (!db_data.dptr) {
ld = (struct locking_data *)db_data.dptr;
orig_num_share_modes = ld->u.s.num_share_mode_entries;
- shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct share_mode_entry));
+ shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct locking_data));
if (orig_num_share_modes == 1) {
/* Only one entry - better be ours... */
}
/* 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 = malloc(db_data.dsize - sizeof(struct share_mode_entry));
+ new_data_p = (uint8_t *)malloc(
+ db_data.dsize - sizeof(struct share_mode_entry));
if (!new_data_p) {
free(db_data.dptr);
return -1;
}
/* Copy the header. */
- memcpy(new_data_p, db_data.dptr, sizeof(struct share_mode_entry));
+ memcpy(new_data_p, db_data.dptr, sizeof(struct locking_data));
num_share_modes = 0;
for (i = 0; i < orig_num_share_modes; i++) {
struct share_mode_entry *share = &shares[i];
- struct process_id pid = share->pid;
+ struct server_id pid = share->pid;
/* Check this process really exists. */
if (kill(sharemodes_procid_to_pid(&pid), 0) == -1 && (errno == ESRCH)) {
continue; /* This is our delete taget. */
}
- memcpy(new_data_p + ((num_share_modes+1)*sizeof(struct share_mode_entry)),
+ memcpy(new_data_p + sizeof(struct locking_data) +
+ (num_share_modes * sizeof(struct share_mode_entry)),
share, sizeof(struct share_mode_entry) );
num_share_modes++;
/* 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 the terminating filename. */
- fname_ptr = db_data.dptr + ((orig_num_share_modes+1) * sizeof(struct share_mode_entry));
- filename_size = db_data.dsize - (fname_ptr - db_data.dptr);
+ /* 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);
- memcpy(new_data_p + ((num_share_modes+1)*sizeof(struct share_mode_entry)),
- fname_ptr,
- filename_size);
+ memcpy(new_data_p + sizeof(struct locking_data) + (num_share_modes * sizeof(struct share_mode_entry)),
+ remaining_ptr,
+ remaining_size);
free(db_data.dptr);
ld = (struct locking_data *)db_data.dptr;
ld->u.s.num_share_mode_entries = num_share_modes;
- db_data.dsize = ((num_share_modes+1)*sizeof(struct share_mode_entry)) + filename_size;
+ 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;
- TDB_DATA locking_key = get_locking_key(dev, ino);
+ struct locking_key lk;
+ 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;
ld = (struct locking_data *)db_data.dptr;
num_share_modes = ld->u.s.num_share_mode_entries;
- shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct share_mode_entry));
+ shares = (struct share_mode_entry *)(db_data.dptr + sizeof(struct locking_data));
for (i = 0; i < num_share_modes; i++) {
struct share_mode_entry *share = &shares[i];
- struct process_id pid = share->pid;
+ struct server_id pid = share->pid;
/* Check this process really exists. */
if (kill(sharemodes_procid_to_pid(&pid), 0) == -1 && (errno == ESRCH)) {
}
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