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
|
/**
* @file
*
* @brief IMFS Make a Generic Node
* @ingroup IMFS
*/
/*
* Copyright (c) 2012 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "imfs.h"
#include <string.h>
IMFS_jnode_t *IMFS_node_initialize_generic(
IMFS_jnode_t *node,
const IMFS_types_union *info
)
{
node->info.generic.context = info->generic.context;
return node;
}
bool IMFS_is_imfs_instance(
const rtems_filesystem_location_info_t *loc
)
{
const char *type = loc->mt_entry->type;
return strcmp(type, RTEMS_FILESYSTEM_TYPE_IMFS) == 0
|| strcmp(type, RTEMS_FILESYSTEM_TYPE_MINIIMFS) == 0;
}
int IMFS_make_generic_node(
const char *path,
mode_t mode,
const IMFS_node_control *node_control,
void *context
)
{
int rv = 0;
mode &= ~rtems_filesystem_umask;
switch (mode & S_IFMT) {
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
case S_IFREG:
case S_IFSOCK:
break;
default:
errno = EINVAL;
rv = -1;
break;
}
if ( rv == 0 ) {
if ( node_control->imfs_type == IMFS_GENERIC ) {
rtems_filesystem_eval_path_context_t ctx;
int eval_flags = RTEMS_FS_FOLLOW_LINK
| RTEMS_FS_MAKE
| RTEMS_FS_EXCLUSIVE;
const rtems_filesystem_location_info_t *currentloc =
rtems_filesystem_eval_path_start( &ctx, path, eval_flags );
if ( IMFS_is_imfs_instance( currentloc ) ) {
IMFS_types_union info;
IMFS_jnode_t *new_node;
info.generic.context = context;
new_node = IMFS_create_node_with_control(
currentloc,
node_control,
rtems_filesystem_eval_path_get_token( &ctx ),
rtems_filesystem_eval_path_get_tokenlen( &ctx ),
mode,
&info
);
if ( new_node != NULL ) {
IMFS_jnode_t *parent = currentloc->node_access;
IMFS_mtime_ctime_update( parent );
} else {
rv = -1;
}
} else {
rtems_filesystem_eval_path_error( &ctx, ENOTSUP );
rv = -1;
}
rtems_filesystem_eval_path_cleanup( &ctx );
} else {
errno = EINVAL;
rv = -1;
}
}
return rv;
}
|