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1 | /* |
2 | * Copyright (C) 2005, 2006 | |
27d2e149 | 3 | * Avishay Traeger (avishay@gmail.com) |
b14f8ab2 BH |
4 | * 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 | ||
30 | int 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) | |
c3a4d78c | 51 | *in_resid = or->in.req ? or->in.req->resid_len : 0; |
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52 | |
53 | if (out_resid) | |
c3a4d78c | 54 | *out_resid = or->out.req ? or->out.req->resid_len : 0; |
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55 | |
56 | return ret; | |
57 | } | |
58 | ||
59 | void 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 | */ | |
67 | int 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 | */ | |
89 | int 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 | ||
107 | int 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 | } |