blob: 4372542df284ed8336a86f6ce205f9465980e707 [file] [log] [blame]
Boaz Harroshb14f8ab2008-10-27 18:27:55 +02001/*
2 * Copyright (C) 2005, 2006
Boaz Harrosh27d2e142009-06-14 17:23:09 +03003 * Avishay Traeger (avishay@gmail.com)
Boaz Harroshb14f8ab2008-10-27 18:27:55 +02004 * Copyright (C) 2008, 2009
5 * Boaz Harrosh <bharrosh@panasas.com>
6 *
7 * This file is part of exofs.
8 *
9 * exofs is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation. Since it is based on ext2, and the only
12 * valid version of GPL for the Linux kernel is version 2, the only valid
13 * version of GPL for exofs is version 2.
14 *
15 * exofs is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with exofs; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25#include <scsi/scsi_device.h>
26#include <scsi/osd_sense.h>
27
28#include "exofs.h"
29
30int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid)
31{
32 struct osd_sense_info osi;
33 int ret = osd_req_decode_sense(or, &osi);
34
35 if (ret) { /* translate to Linux codes */
36 if (osi.additional_code == scsi_invalid_field_in_cdb) {
37 if (osi.cdb_field_offset == OSD_CFO_STARTING_BYTE)
38 ret = -EFAULT;
39 if (osi.cdb_field_offset == OSD_CFO_OBJECT_ID)
40 ret = -ENOENT;
41 else
42 ret = -EINVAL;
43 } else if (osi.additional_code == osd_quota_error)
44 ret = -ENOSPC;
45 else
46 ret = -EIO;
47 }
48
49 /* FIXME: should be include in osd_sense_info */
50 if (in_resid)
Tejun Heoc3a4d782009-05-07 22:24:37 +090051 *in_resid = or->in.req ? or->in.req->resid_len : 0;
Boaz Harroshb14f8ab2008-10-27 18:27:55 +020052
53 if (out_resid)
Tejun Heoc3a4d782009-05-07 22:24:37 +090054 *out_resid = or->out.req ? or->out.req->resid_len : 0;
Boaz Harroshb14f8ab2008-10-27 18:27:55 +020055
56 return ret;
57}
58
59void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
60{
61 osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
62}
63
64/*
65 * Perform a synchronous OSD operation.
66 */
67int exofs_sync_op(struct osd_request *or, int timeout, uint8_t *credential)
68{
69 int ret;
70
71 or->timeout = timeout;
72 ret = osd_finalize_request(or, 0, credential, NULL);
73 if (ret) {
74 EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
75 return ret;
76 }
77
78 ret = osd_execute_request(or);
79
80 if (ret)
81 EXOFS_DBGMSG("osd_execute_request() => %d\n", ret);
82 /* osd_req_decode_sense(or, ret); */
83 return ret;
84}
85
86/*
87 * Perform an asynchronous OSD operation.
88 */
89int exofs_async_op(struct osd_request *or, osd_req_done_fn *async_done,
90 void *caller_context, u8 *cred)
91{
92 int ret;
93
94 ret = osd_finalize_request(or, 0, cred, NULL);
95 if (ret) {
96 EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret);
97 return ret;
98 }
99
100 ret = osd_execute_request_async(or, async_done, caller_context);
101
102 if (ret)
103 EXOFS_DBGMSG("osd_execute_request_async() => %d\n", ret);
104 return ret;
105}
106
107int extract_attr_from_req(struct osd_request *or, struct osd_attr *attr)
108{
109 struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */
110 void *iter = NULL;
111 int nelem;
112
113 do {
114 nelem = 1;
115 osd_req_decode_get_attr_list(or, &cur_attr, &nelem, &iter);
116 if ((cur_attr.attr_page == attr->attr_page) &&
117 (cur_attr.attr_id == attr->attr_id)) {
118 attr->len = cur_attr.len;
119 attr->val_ptr = cur_attr.val_ptr;
120 return 0;
121 }
122 } while (iter);
123
124 return -EIO;
125}