1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*
* Copyright (C) 2006 by Latchesar Ionkov <lucho@ionkov.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <unistd.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <errno.h>
#include <stdint.h>
#include <inttypes.h>
#include <libgen.h>
#include "9p.h"
#include "npfs.h"
#include "npclient.h"
#include "npcimpl.h"
/* fid: parent directory on entry, new file on exit.
*/
int
npc_create (Npcfid *fid, char *name, u32 flags, u32 mode, gid_t gid)
{
int maxio = fid->fsys->msize - P9_IOHDRSZ;
Npfcall *tc = NULL, *rc = NULL;
int ret = -1;
if (!(tc = np_create_tlcreate(fid->fid, name, flags, mode, gid))) {
np_uerror (ENOMEM);
goto done;
}
if (fid->fsys->rpc(fid->fsys, tc, &rc) < 0)
goto done;
fid->iounit = rc->u.rlcreate.iounit;
if (!fid->iounit == 0 || fid->iounit > maxio)
fid->iounit = maxio;
ret = 0;
done:
if (tc)
free(tc);
if (rc)
free(rc);
return ret;
}
Npcfid *
npc_create_bypath (Npcfid *root, char *path, u32 flags, u32 mode, gid_t gid)
{
Npcfid *fid;
char *cpy, *dname, *fname;
/* walk to the parent */
if (!(cpy = strdup (path))) {
np_uerror (ENOMEM);
return NULL;
}
dname = dirname (cpy);
fid = npc_walk (root, dname);
free (cpy);
if (!fid)
return NULL;
/* create the child */
if (!(cpy = strdup (path))) {
(void)npc_clunk (fid);
np_uerror (ENOMEM);
return NULL;
}
fname = basename (cpy);
if (npc_create (fid, fname, flags, mode, gid) < 0) {
int saved_err = np_rerror ();
(void)npc_clunk (fid);
free (cpy);
np_uerror (saved_err);
return NULL;
}
free (cpy);
return fid;
}
int
npc_open (Npcfid *fid, u32 flags)
{
int maxio = fid->fsys->msize - P9_IOHDRSZ;
Npfcall *tc = NULL, *rc = NULL;
int ret = -1;
if (!(tc = np_create_tlopen(fid->fid, flags))) {
np_uerror (ENOMEM);
goto done;
}
if (fid->fsys->rpc(fid->fsys, tc, &rc) < 0)
goto done;
fid->iounit = rc->u.rlopen.iounit;
if (fid->iounit == 0 || fid->iounit > maxio)
fid->iounit = maxio;
fid->offset = 0;
ret = 0;
done:
if (tc)
free(tc);
if (rc)
free(rc);
return ret;
}
Npcfid *
npc_open_bypath (Npcfid *root, char *path, u32 flags)
{
Npcfid *fid;
if (!(fid = npc_walk (root, path)))
return NULL;
if (npc_open (fid, flags) < 0) {
int saved_err = np_rerror ();
(void)npc_clunk (fid);
np_uerror (saved_err);
return NULL;
}
return fid;
}
u64
npc_lseek(Npcfid *fid, u64 offset, int whence)
{
u64 file_size = 0;
switch (whence) {
case SEEK_SET:
fid->offset = offset;
break;
case SEEK_CUR:
fid->offset += offset;
break;
case SEEK_END:
/* FIXME: get file_size */
fid->offset = file_size + offset;
break;
}
return fid->offset;
}
|