1 |
|
|
/*************************************************************************** |
2 |
|
|
* Copyright (c) 2024 Microsoft Corporation |
3 |
|
|
* |
4 |
|
|
* This program and the accompanying materials are made available under the |
5 |
|
|
* terms of the MIT License which is available at |
6 |
|
|
* https://opensource.org/licenses/MIT. |
7 |
|
|
* |
8 |
|
|
* SPDX-License-Identifier: MIT |
9 |
|
|
**************************************************************************/ |
10 |
|
|
|
11 |
|
|
|
12 |
|
|
/**************************************************************************/ |
13 |
|
|
/**************************************************************************/ |
14 |
|
|
/** */ |
15 |
|
|
/** FileX Component */ |
16 |
|
|
/** */ |
17 |
|
|
/** Media */ |
18 |
|
|
/** */ |
19 |
|
|
/**************************************************************************/ |
20 |
|
|
/**************************************************************************/ |
21 |
|
|
|
22 |
|
|
#define FX_SOURCE_CODE |
23 |
|
|
|
24 |
|
|
|
25 |
|
|
/* Include necessary system files. */ |
26 |
|
|
|
27 |
|
|
#include "fx_api.h" |
28 |
|
|
#include "fx_system.h" |
29 |
|
|
#include "fx_media.h" |
30 |
|
|
#include "fx_utility.h" |
31 |
|
|
|
32 |
|
|
|
33 |
|
|
/**************************************************************************/ |
34 |
|
|
/* */ |
35 |
|
|
/* FUNCTION RELEASE */ |
36 |
|
|
/* */ |
37 |
|
|
/* _fx_media_write PORTABLE C */ |
38 |
|
|
/* 6.1 */ |
39 |
|
|
/* AUTHOR */ |
40 |
|
|
/* */ |
41 |
|
|
/* William E. Lamie, Microsoft Corporation */ |
42 |
|
|
/* */ |
43 |
|
|
/* DESCRIPTION */ |
44 |
|
|
/* */ |
45 |
|
|
/* This function writes the specified raw logical sector to the */ |
46 |
|
|
/* specified media. */ |
47 |
|
|
/* */ |
48 |
|
|
/* INPUT */ |
49 |
|
|
/* */ |
50 |
|
|
/* media_ptr Media control block pointer */ |
51 |
|
|
/* logical_sector Logical sector to read */ |
52 |
|
|
/* buffer_ptr Pointer to caller's buffer */ |
53 |
|
|
/* */ |
54 |
|
|
/* OUTPUT */ |
55 |
|
|
/* */ |
56 |
|
|
/* return status */ |
57 |
|
|
/* */ |
58 |
|
|
/* CALLS */ |
59 |
|
|
/* */ |
60 |
|
|
/* _fx_utility_logical_sector_write Write logical sector utility */ |
61 |
|
|
/* */ |
62 |
|
|
/* CALLED BY */ |
63 |
|
|
/* */ |
64 |
|
|
/* Application Code */ |
65 |
|
|
/* */ |
66 |
|
|
/* RELEASE HISTORY */ |
67 |
|
|
/* */ |
68 |
|
|
/* DATE NAME DESCRIPTION */ |
69 |
|
|
/* */ |
70 |
|
|
/* 05-19-2020 William E. Lamie Initial Version 6.0 */ |
71 |
|
|
/* 09-30-2020 William E. Lamie Modified comment(s), */ |
72 |
|
|
/* resulting in version 6.1 */ |
73 |
|
|
/* */ |
74 |
|
|
/**************************************************************************/ |
75 |
|
4059 |
UINT _fx_media_write(FX_MEDIA *media_ptr, ULONG logical_sector, VOID *buffer_ptr) |
76 |
|
|
{ |
77 |
|
|
|
78 |
|
|
UINT status; |
79 |
|
|
|
80 |
|
|
#ifdef TX_ENABLE_EVENT_TRACE |
81 |
|
|
TX_TRACE_BUFFER_ENTRY *trace_event; |
82 |
|
|
ULONG trace_timestamp; |
83 |
|
|
#endif |
84 |
|
|
|
85 |
|
|
|
86 |
|
|
#ifndef FX_MEDIA_STATISTICS_DISABLE |
87 |
|
|
|
88 |
|
|
/* Increment the number of times this service has been called. */ |
89 |
|
4059 |
media_ptr -> fx_media_writes++; |
90 |
|
|
#endif |
91 |
|
|
|
92 |
|
|
/* Check the media to make sure it is open. */ |
93 |
✓✓ |
4059 |
if (media_ptr -> fx_media_id != FX_MEDIA_ID) |
94 |
|
|
{ |
95 |
|
|
|
96 |
|
|
/* Return the media not opened error. */ |
97 |
|
1 |
return(FX_MEDIA_NOT_OPEN); |
98 |
|
|
} |
99 |
|
|
|
100 |
|
|
/* If trace is enabled, insert this event into the trace buffer. */ |
101 |
|
|
FX_TRACE_IN_LINE_INSERT(FX_TRACE_MEDIA_WRITE, media_ptr, logical_sector, buffer_ptr, 0, FX_TRACE_MEDIA_EVENTS, &trace_event, &trace_timestamp) |
102 |
|
|
|
103 |
|
|
/* Protect against other threads accessing the media. */ |
104 |
|
4058 |
FX_PROTECT |
105 |
|
|
|
106 |
|
|
/* Check for write protect at the media level (set by driver). */ |
107 |
✓✓ |
4058 |
if (media_ptr -> fx_media_driver_write_protect) |
108 |
|
|
{ |
109 |
|
|
|
110 |
|
|
/* Release media protection. */ |
111 |
|
1 |
FX_UNPROTECT |
112 |
|
|
|
113 |
|
|
/* Return write protect error. */ |
114 |
|
1 |
return(FX_WRITE_PROTECT); |
115 |
|
|
} |
116 |
|
|
|
117 |
|
|
/* Write the logical sector. */ |
118 |
|
4057 |
status = _fx_utility_logical_sector_write(media_ptr, (ULONG64) logical_sector, buffer_ptr, ((ULONG) 1), FX_DATA_SECTOR); |
119 |
|
|
|
120 |
|
|
#ifdef TX_ENABLE_EVENT_TRACE |
121 |
|
|
|
122 |
|
|
/* Check for successful status. */ |
123 |
|
|
if (status == FX_SUCCESS) |
124 |
|
|
{ |
125 |
|
|
|
126 |
|
|
/* Update the trace event with the bytes written. */ |
127 |
|
|
FX_TRACE_EVENT_UPDATE(trace_event, trace_timestamp, FX_TRACE_MEDIA_WRITE, 0, 0, 0, media_ptr -> fx_media_bytes_per_sector) |
128 |
|
|
} |
129 |
|
|
#endif |
130 |
|
|
|
131 |
|
|
/* Release media protection. */ |
132 |
|
4057 |
FX_UNPROTECT |
133 |
|
|
|
134 |
|
|
/* Return status to the caller. */ |
135 |
|
4057 |
return(status); |
136 |
|
|
} |
137 |
|
|
|