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b14f8ab2 BH |
1 | /* |
2 | * Copyright (C) 2005, 2006 | |
3 | * Avishay Traeger (avishay@gmail.com) (avishay@il.ibm.com) | |
4 | * Copyright (C) 2005, 2006 | |
5 | * International Business Machines | |
6 | * Copyright (C) 2008, 2009 | |
7 | * Boaz Harrosh <bharrosh@panasas.com> | |
8 | * | |
9 | * This file is part of exofs. | |
10 | * | |
11 | * exofs is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation. Since it is based on ext2, and the only | |
14 | * valid version of GPL for the Linux kernel is version 2, the only valid | |
15 | * version of GPL for exofs is version 2. | |
16 | * | |
17 | * exofs is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with exofs; if not, write to the Free Software | |
24 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
25 | */ | |
26 | ||
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/osd_sense.h> | |
29 | ||
30 | #include "exofs.h" | |
31 | ||
32 | int exofs_check_ok_resid(struct osd_request *or, u64 *in_resid, u64 *out_resid) | |
33 | { | |
34 | struct osd_sense_info osi; | |
35 | int ret = osd_req_decode_sense(or, &osi); | |
36 | ||
37 | if (ret) { /* translate to Linux codes */ | |
38 | if (osi.additional_code == scsi_invalid_field_in_cdb) { | |
39 | if (osi.cdb_field_offset == OSD_CFO_STARTING_BYTE) | |
40 | ret = -EFAULT; | |
41 | if (osi.cdb_field_offset == OSD_CFO_OBJECT_ID) | |
42 | ret = -ENOENT; | |
43 | else | |
44 | ret = -EINVAL; | |
45 | } else if (osi.additional_code == osd_quota_error) | |
46 | ret = -ENOSPC; | |
47 | else | |
48 | ret = -EIO; | |
49 | } | |
50 | ||
51 | /* FIXME: should be include in osd_sense_info */ | |
52 | if (in_resid) | |
53 | *in_resid = or->in.req ? or->in.req->data_len : 0; | |
54 | ||
55 | if (out_resid) | |
56 | *out_resid = or->out.req ? or->out.req->data_len : 0; | |
57 | ||
58 | return ret; | |
59 | } | |
60 | ||
61 | void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj) | |
62 | { | |
63 | osd_sec_init_nosec_doall_caps(cred_a, obj, false, true); | |
64 | } | |
65 | ||
66 | /* | |
67 | * Perform a synchronous OSD operation. | |
68 | */ | |
69 | int exofs_sync_op(struct osd_request *or, int timeout, uint8_t *credential) | |
70 | { | |
71 | int ret; | |
72 | ||
73 | or->timeout = timeout; | |
74 | ret = osd_finalize_request(or, 0, credential, NULL); | |
75 | if (ret) { | |
76 | EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret); | |
77 | return ret; | |
78 | } | |
79 | ||
80 | ret = osd_execute_request(or); | |
81 | ||
82 | if (ret) | |
83 | EXOFS_DBGMSG("osd_execute_request() => %d\n", ret); | |
84 | /* osd_req_decode_sense(or, ret); */ | |
85 | return ret; | |
86 | } | |
87 | ||
88 | /* | |
89 | * Perform an asynchronous OSD operation. | |
90 | */ | |
91 | int exofs_async_op(struct osd_request *or, osd_req_done_fn *async_done, | |
92 | void *caller_context, u8 *cred) | |
93 | { | |
94 | int ret; | |
95 | ||
96 | ret = osd_finalize_request(or, 0, cred, NULL); | |
97 | if (ret) { | |
98 | EXOFS_DBGMSG("Faild to osd_finalize_request() => %d\n", ret); | |
99 | return ret; | |
100 | } | |
101 | ||
102 | ret = osd_execute_request_async(or, async_done, caller_context); | |
103 | ||
104 | if (ret) | |
105 | EXOFS_DBGMSG("osd_execute_request_async() => %d\n", ret); | |
106 | return ret; | |
107 | } | |
108 | ||
109 | int extract_attr_from_req(struct osd_request *or, struct osd_attr *attr) | |
110 | { | |
111 | struct osd_attr cur_attr = {.attr_page = 0}; /* start with zeros */ | |
112 | void *iter = NULL; | |
113 | int nelem; | |
114 | ||
115 | do { | |
116 | nelem = 1; | |
117 | osd_req_decode_get_attr_list(or, &cur_attr, &nelem, &iter); | |
118 | if ((cur_attr.attr_page == attr->attr_page) && | |
119 | (cur_attr.attr_id == attr->attr_id)) { | |
120 | attr->len = cur_attr.len; | |
121 | attr->val_ptr = cur_attr.val_ptr; | |
122 | return 0; | |
123 | } | |
124 | } while (iter); | |
125 | ||
126 | return -EIO; | |
127 | } | |
128 | ||
129 | int osd_req_read_kern(struct osd_request *or, | |
130 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) | |
131 | { | |
132 | struct request_queue *req_q = or->osd_dev->scsi_device->request_queue; | |
133 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); | |
134 | ||
135 | if (!bio) | |
136 | return -ENOMEM; | |
137 | ||
138 | osd_req_read(or, obj, bio, offset); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | int osd_req_write_kern(struct osd_request *or, | |
143 | const struct osd_obj_id *obj, u64 offset, void* buff, u64 len) | |
144 | { | |
145 | struct request_queue *req_q = or->osd_dev->scsi_device->request_queue; | |
146 | struct bio *bio = bio_map_kern(req_q, buff, len, GFP_KERNEL); | |
147 | ||
148 | if (!bio) | |
149 | return -ENOMEM; | |
150 | ||
151 | osd_req_write(or, obj, bio, offset); | |
152 | return 0; | |
153 | } |