If we're not allowing streams on this conn ptr,
[samba.git] / source / smbd / open.c
index 4abe01738063fb62f9f4a0cdf42b038becd2ee43..2184e69d3745c936c4b683bc9116ccf41493d9b6 100644 (file)
@@ -72,13 +72,21 @@ static NTSTATUS fd_open(struct connection_struct *conn,
 
 NTSTATUS fd_close(files_struct *fsp)
 {
+       int ret;
+
        if (fsp->fh->fd == -1) {
                return NT_STATUS_OK; /* What we used to call a stat open. */
        }
        if (fsp->fh->ref_count > 1) {
                return NT_STATUS_OK; /* Shared handle. Only close last reference. */
        }
-       return fd_close_posix(fsp);
+
+       ret = SMB_VFS_CLOSE(fsp);
+       fsp->fh->fd = -1;
+       if (ret == -1) {
+               return map_nt_error_from_unix(errno);
+       }
+       return NT_STATUS_OK;
 }
 
 /****************************************************************************
@@ -125,7 +133,7 @@ static NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
        char *saved_dir = NULL;
        SMB_STRUCT_STAT sbuf;
        SMB_STRUCT_STAT parent_st;
-       TALLOC_CTX *ctx = talloc_stackframe();
+       TALLOC_CTX *ctx = talloc_tos();
        NTSTATUS status = NT_STATUS_OK;
        int ret;
 
@@ -135,7 +143,6 @@ static NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
                DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
                         "directory %s. Error was %s\n",
                         inherit_from_dir, strerror(errno) ));
-               TALLOC_FREE(ctx);
                return status;
        }
 
@@ -152,7 +159,6 @@ static NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
                DEBUG(0,("change_dir_owner_to_parent: failed to get "
                         "current working directory. Error was %s\n",
                         strerror(errno)));
-               TALLOC_FREE(ctx);
                return status;
        }
 
@@ -202,7 +208,6 @@ static NTSTATUS change_dir_owner_to_parent(connection_struct *conn,
 
  out:
 
-       TALLOC_FREE(ctx);
        vfs_ChDir(conn,saved_dir);
        return status;
 }
@@ -601,12 +606,6 @@ static NTSTATUS open_mode_check(connection_struct *conn,
        }
 
        *file_existed = True;
-       
-       if (is_stat_open(access_mask)) {
-               /* Stat open that doesn't trigger oplock breaks or share mode
-                * checks... ! JRA. */
-               return NT_STATUS_OK;
-       }
 
        /* A delete on close prohibits everything */
 
@@ -614,6 +613,12 @@ static NTSTATUS open_mode_check(connection_struct *conn,
                return NT_STATUS_DELETE_PENDING;
        }
 
+       if (is_stat_open(access_mask)) {
+               /* Stat open that doesn't trigger oplock breaks or share mode
+                * checks... ! JRA. */
+               return NT_STATUS_OK;
+       }
+
        /*
         * Check if the share modes will give us access.
         */
@@ -1224,7 +1229,8 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
                request_time = pml->request_time;
 
                /* Remove the deferred open entry under lock. */
-               lck = get_share_mode_lock(NULL, state->id, NULL, NULL);
+               lck = get_share_mode_lock(talloc_tos(), state->id, NULL, NULL,
+                                         NULL);
                if (lck == NULL) {
                        DEBUG(0, ("could not get share mode lock\n"));
                } else {
@@ -1369,7 +1375,7 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
        se_map_generic(&access_mask, &file_generic_mapping);
        open_access_mask = access_mask;
 
-       if (flags2 & O_TRUNC) {
+       if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
                open_access_mask |= FILE_WRITE_DATA; /* This will cause oplock breaks. */
        }
 
@@ -1381,7 +1387,8 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
         * mean the same thing under DOS and Unix.
         */
 
-       if (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) {
+       if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
+                       (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
                /* DENY_DOS opens are always underlying read-write on the
                   file handle, no matter what the requested access mask
                    says. */
@@ -1452,11 +1459,12 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
        }
 
        if (file_existed) {
+               struct timespec old_write_time = get_mtimespec(psbuf);
                id = vfs_file_id_from_sbuf(conn, psbuf);
 
-               lck = get_share_mode_lock(NULL, id,
+               lck = get_share_mode_lock(talloc_tos(), id,
                                          conn->connectpath,
-                                         fname);
+                                         fname, &old_write_time);
 
                if (lck == NULL) {
                        file_free(fsp);
@@ -1663,7 +1671,7 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
        }
 
        if (!file_existed) {
-
+               struct timespec old_write_time = get_mtimespec(psbuf);
                /*
                 * Deal with the race condition where two smbd's detect the
                 * file doesn't exist and do the create at the same time. One
@@ -1681,9 +1689,9 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
 
                id = fsp->file_id;
 
-               lck = get_share_mode_lock(NULL, id,
+               lck = get_share_mode_lock(talloc_tos(), id,
                                          conn->connectpath,
-                                         fname);
+                                         fname, &old_write_time);
 
                if (lck == NULL) {
                        DEBUG(0, ("open_file_ntcreate: Could not get share "
@@ -1764,14 +1772,16 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
            the kernel refuses the operations then the kernel is wrong.
           note that GPFS supports it as well - jmcd */
 
-       ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
-       if(ret_flock == -1 ){
+       if (fsp->fh->fd != -1) {
+               ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access);
+               if(ret_flock == -1 ){
 
-               TALLOC_FREE(lck);
-               fd_close(fsp);
-               file_free(fsp);
-               
-               return NT_STATUS_SHARING_VIOLATION;
+                       TALLOC_FREE(lck);
+                       fd_close(fsp);
+                       file_free(fsp);
+
+                       return NT_STATUS_SHARING_VIOLATION;
+               }
        }
 
        /*
@@ -1843,7 +1853,9 @@ NTSTATUS open_file_ntcreate(connection_struct *conn,
        set_share_mode(lck, fsp, current_user.ut.uid, 0, fsp->oplock_type, new_file_created);
 
        /* Handle strange delete on close create semantics. */
-       if ((create_options & FILE_DELETE_ON_CLOSE) && can_set_initial_delete_on_close(lck)) {
+       if ((create_options & FILE_DELETE_ON_CLOSE)
+           && (is_ntfs_stream_name(fname)
+               || can_set_initial_delete_on_close(lck))) {
                status = can_set_delete_on_close(fsp, True, new_dos_attributes);
 
                if (!NT_STATUS_IS_OK(status)) {
@@ -2093,6 +2105,7 @@ NTSTATUS open_directory(connection_struct *conn,
        bool dir_existed = VALID_STAT(*psbuf) ? True : False;
        struct share_mode_lock *lck = NULL;
        NTSTATUS status;
+       struct timespec mtimespec;
        int info = 0;
 
        DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
@@ -2105,7 +2118,7 @@ NTSTATUS open_directory(connection_struct *conn,
                 (unsigned int)create_disposition,
                 (unsigned int)file_attributes));
 
-       if (is_ntfs_stream_name(fname)) {
+       if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) && is_ntfs_stream_name(fname)) {
                DEBUG(2, ("open_directory: %s is a stream name!\n", fname));
                return NT_STATUS_NOT_A_DIRECTORY;
        }
@@ -2215,9 +2228,11 @@ NTSTATUS open_directory(connection_struct *conn,
 
        string_set(&fsp->fsp_name,fname);
 
-       lck = get_share_mode_lock(NULL, fsp->file_id,
+       mtimespec = get_mtimespec(psbuf);
+
+       lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
                                  conn->connectpath,
-                                 fname);
+                                 fname, &mtimespec);
 
        if (lck == NULL) {
                DEBUG(0, ("open_directory: Could not get share mode lock for %s\n", fname));
@@ -2444,6 +2459,116 @@ static struct case_semantics_state *set_posix_case_semantics(TALLOC_CTX *mem_ctx
        return result;
 }
 
+/*
+ * If a main file is opened for delete, all streams need to be checked for
+ * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
+ * If that works, delete them all by setting the delete on close and close.
+ */
+
+static NTSTATUS open_streams_for_delete(connection_struct *conn,
+                                       const char *fname)
+{
+       struct stream_struct *stream_info;
+       files_struct **streams;
+       int i;
+       unsigned int num_streams;
+       TALLOC_CTX *frame = talloc_stackframe();
+       NTSTATUS status;
+
+       status = SMB_VFS_STREAMINFO(conn, NULL, fname, talloc_tos(),
+                                   &num_streams, &stream_info);
+
+       if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)
+           || NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+               DEBUG(10, ("no streams around\n"));
+               TALLOC_FREE(frame);
+               return NT_STATUS_OK;
+       }
+
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(10, ("SMB_VFS_STREAMINFO failed: %s\n",
+                          nt_errstr(status)));
+               goto fail;
+       }
+
+       DEBUG(10, ("open_streams_for_delete found %d streams\n",
+                  num_streams));
+
+       if (num_streams == 0) {
+               TALLOC_FREE(frame);
+               return NT_STATUS_OK;
+       }
+
+       streams = TALLOC_ARRAY(talloc_tos(), files_struct *, num_streams);
+       if (streams == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               status = NT_STATUS_NO_MEMORY;
+               goto fail;
+       }
+
+       for (i=0; i<num_streams; i++) {
+               char *streamname;
+
+               if (strequal(stream_info[i].name, "::$DATA")) {
+                       streams[i] = NULL;
+                       continue;
+               }
+
+               streamname = talloc_asprintf(talloc_tos(), "%s%s", fname,
+                                            stream_info[i].name);
+
+               if (streamname == NULL) {
+                       DEBUG(0, ("talloc_aprintf failed\n"));
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fail;
+               }
+
+               status = create_file_unixpath
+                       (conn,                  /* conn */
+                        NULL,                  /* req */
+                        streamname,            /* fname */
+                        DELETE_ACCESS,         /* access_mask */
+                        FILE_SHARE_READ | FILE_SHARE_WRITE
+                        | FILE_SHARE_DELETE,   /* share_access */
+                        FILE_OPEN,             /* create_disposition*/
+                        NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE, /* create_options */
+                        FILE_ATTRIBUTE_NORMAL, /* file_attributes */
+                        0,                     /* oplock_request */
+                        0,                     /* allocation_size */
+                        NULL,                  /* sd */
+                        NULL,                  /* ea_list */
+                        &streams[i],           /* result */
+                        NULL,                  /* pinfo */
+                        NULL);                 /* psbuf */
+
+               TALLOC_FREE(streamname);
+
+               if (!NT_STATUS_IS_OK(status)) {
+                       DEBUG(10, ("Could not open stream %s: %s\n",
+                                  streamname, nt_errstr(status)));
+                       break;
+               }
+       }
+
+       /*
+        * don't touch the variable "status" beyond this point :-)
+        */
+
+       for (i -= 1 ; i >= 0; i--) {
+               if (streams[i] == NULL) {
+                       continue;
+               }
+
+               DEBUG(10, ("Closing stream # %d, %s\n", i,
+                          streams[i]->fsp_name));
+               close_file(streams[i], NORMAL_CLOSE);
+       }
+
+ fail:
+       TALLOC_FREE(frame);
+       return status;
+}
+
 /*
  * Wrapper around open_file_ntcreate and open_directory
  */
@@ -2467,6 +2592,7 @@ NTSTATUS create_file_unixpath(connection_struct *conn,
 {
        SMB_STRUCT_STAT sbuf;
        int info = FILE_WAS_OPENED;
+       files_struct *base_fsp = NULL;
        files_struct *fsp = NULL;
        NTSTATUS status;
 
@@ -2496,7 +2622,23 @@ NTSTATUS create_file_unixpath(connection_struct *conn,
                sbuf = *psbuf;
        }
        else {
-               SET_STAT_INVALID(sbuf);
+               if (SMB_VFS_STAT(conn, fname, &sbuf) == -1) {
+                       SET_STAT_INVALID(sbuf);
+               }
+       }
+
+       if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
+           && (access_mask & DELETE_ACCESS)
+           && !is_ntfs_stream_name(fname)) {
+               /*
+                * We can't open a file with DELETE access if any of the
+                * streams is open without FILE_SHARE_DELETE
+                */
+               status = open_streams_for_delete(conn, fname);
+
+               if (!NT_STATUS_IS_OK(status)) {
+                       goto fail;
+               }
        }
 
        /* This is the correct thing to do (check every time) but can_delete
@@ -2529,12 +2671,62 @@ NTSTATUS create_file_unixpath(connection_struct *conn,
        }
 #endif
 
+       if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
+           && is_ntfs_stream_name(fname)
+           && (!(create_options & NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE))) {
+               char *base;
+               uint32 base_create_disposition;
+
+               if (create_options & FILE_DIRECTORY_FILE) {
+                       status = NT_STATUS_NOT_A_DIRECTORY;
+                       goto fail;
+               }
+
+               status = split_ntfs_stream_name(talloc_tos(), fname,
+                                               &base, NULL);
+               if (!NT_STATUS_IS_OK(status)) {
+                       DEBUG(10, ("create_file_unixpath: "
+                               "split_ntfs_stream_name failed: %s\n",
+                               nt_errstr(status)));
+                       goto fail;
+               }
+
+               SMB_ASSERT(!is_ntfs_stream_name(base)); /* paranoia.. */
+
+               switch (create_disposition) {
+               case FILE_OPEN:
+                       base_create_disposition = FILE_OPEN;
+                       break;
+               default:
+                       base_create_disposition = FILE_OPEN_IF;
+                       break;
+               }
+
+               status = create_file_unixpath(conn, NULL, base, 0,
+                                             FILE_SHARE_READ
+                                             | FILE_SHARE_WRITE
+                                             | FILE_SHARE_DELETE,
+                                             base_create_disposition,
+                                             0, 0, 0, 0, NULL, NULL,
+                                             &base_fsp, NULL, NULL);
+               if (!NT_STATUS_IS_OK(status)) {
+                       DEBUG(10, ("create_file_unixpath for base %s failed: "
+                                  "%s\n", base, nt_errstr(status)));
+                       goto fail;
+               }
+       }
+
        /*
         * If it's a request for a directory open, deal with it separately.
         */
 
        if (create_options & FILE_DIRECTORY_FILE) {
 
+               if (create_options & FILE_NON_DIRECTORY_FILE) {
+                       status = NT_STATUS_INVALID_PARAMETER;
+                       goto fail;
+               }
+
                /* Can't open a temp directory. IFS kit test. */
                if (file_attributes & FILE_ATTRIBUTE_TEMPORARY) {
                        status = NT_STATUS_INVALID_PARAMETER;
@@ -2663,7 +2855,17 @@ NTSTATUS create_file_unixpath(connection_struct *conn,
                }
        }
 
-       DEBUG(10, ("create_file: info=%d\n", info));
+       DEBUG(10, ("create_file_unixpath: info=%d\n", info));
+
+       /*
+        * Set fsp->base_fsp late enough that we can't "goto fail" anymore. In
+        * the fail: branch we call close_file(fsp, ERROR_CLOSE) which would
+        * also close fsp->base_fsp which we have to also do explicitly in
+        * this routine here, as not in all "goto fail:" we have the fsp set
+        * up already to be initialized with the base_fsp.
+        */
+
+       fsp->base_fsp = base_fsp;
 
        *result = fsp;
        if (pinfo != NULL) {
@@ -2680,12 +2882,16 @@ NTSTATUS create_file_unixpath(connection_struct *conn,
        return NT_STATUS_OK;
 
  fail:
-       DEBUG(10, ("create_file: %s\n", nt_errstr(status)));
+       DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status)));
 
        if (fsp != NULL) {
                close_file(fsp, ERROR_CLOSE);
                fsp = NULL;
        }
+       if (base_fsp != NULL) {
+               close_file(base_fsp, ERROR_CLOSE);
+               base_fsp = NULL;
+       }
        return status;
 }
 
@@ -2707,7 +2913,6 @@ NTSTATUS create_file(connection_struct *conn,
                     int *pinfo,
                     SMB_STRUCT_STAT *psbuf)
 {
-       TALLOC_CTX *frame = talloc_stackframe();
        struct case_semantics_state *case_state = NULL;
        SMB_STRUCT_STAT sbuf;
        int info = FILE_WAS_OPENED;
@@ -2814,19 +3019,18 @@ NTSTATUS create_file(connection_struct *conn,
                        status = NT_STATUS_NO_MEMORY;
                        goto fail;
                }
-       } else {
-               /*
-                * Check to see if this is a mac fork of some kind.
-                */
+       }
 
-               if (is_ntfs_stream_name(fname)) {
-                       enum FAKE_FILE_TYPE fake_file_type;
+       /*
+        * Check to see if this is a mac fork of some kind.
+        */
 
-                       fake_file_type = is_fake_file(fname);
+       if (is_ntfs_stream_name(fname)) {
+               enum FAKE_FILE_TYPE fake_file_type;
 
-                       if (fake_file_type == FAKE_FILE_TYPE_NONE) {
-                               return NT_STATUS_OBJECT_PATH_NOT_FOUND;
-                       }
+               fake_file_type = is_fake_file(fname);
+
+               if (fake_file_type != FAKE_FILE_TYPE_NONE) {
 
                        /*
                         * Here we go! support for changing the disk quotas
@@ -2845,8 +3049,14 @@ NTSTATUS create_file(connection_struct *conn,
                                goto fail;
                        }
 
+                       ZERO_STRUCT(sbuf);
                        goto done;
                }
+
+               if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
+                       status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
+                       goto fail;
+               }
        }
 
        if ((req != NULL) && (req->flags2 & FLAGS2_DFS_PATHNAMES)) {
@@ -2889,6 +3099,8 @@ NTSTATUS create_file(connection_struct *conn,
                fname = converted_fname;
        }
 
+       TALLOC_FREE(case_state);
+
        /* All file access must go through check_name() */
 
        status = check_name(conn, fname);
@@ -2916,7 +3128,6 @@ NTSTATUS create_file(connection_struct *conn,
        if (psbuf != NULL) {
                *psbuf = sbuf;
        }
-       TALLOC_FREE(frame);
        return NT_STATUS_OK;
 
  fail:
@@ -2926,6 +3137,5 @@ NTSTATUS create_file(connection_struct *conn,
                close_file(fsp, ERROR_CLOSE);
                fsp = NULL;
        }
-       TALLOC_FREE(frame);
        return status;
 }