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 /** Unicode */
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_unicode.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _fx_unicode_short_name_get_extended PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* William E. Lamie, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function finds the short name associated with the supplied */
44 /* unicode name. */
45 /* */
46 /* INPUT */
47 /* */
48 /* media_ptr Pointer to media */
49 /* source_unicode_name Pointer to unicode name */
50 /* source_unicode_length Length of unicode name */
51 /* destination_short_name Pointer to destination name */
52 /* short_name_buffer_length Buffer length of short name */
53 /* */
54 /* OUTPUT */
55 /* */
56 /* Completion Status */
57 /* */
58 /* CALLS */
59 /* */
60 /* _fx_unicode_directory_search Search for unicode name */
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 /**************************************************************************/
_fx_unicode_short_name_get_extended(FX_MEDIA * media_ptr,UCHAR * source_unicode_name,ULONG source_unicode_length,CHAR * destination_short_name,ULONG short_name_buffer_length)75 UINT _fx_unicode_short_name_get_extended(FX_MEDIA *media_ptr, UCHAR *source_unicode_name, ULONG source_unicode_length,
76 CHAR *destination_short_name, ULONG short_name_buffer_length)
77 {
78
79 UINT status;
80 ULONG temp_unicode_length;
81 FX_DIR_ENTRY dir_entry;
82
83
84 /* Setup pointer to media name buffer. */
85 dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;
86
87 /* Clear the short name string. */
88 dir_entry.fx_dir_entry_short_name[0] = 0;
89
90 /* Check the media to make sure it is open. */
91 if (media_ptr -> fx_media_id != FX_MEDIA_ID)
92 {
93
94 /* Return the media not opened error. */
95 return(FX_MEDIA_NOT_OPEN);
96 }
97
98
99 /* Null terminate the short return name. */
100 destination_short_name[0] = (UCHAR)0;
101
102 /* Setup temporary unicode name length for search call. */
103 temp_unicode_length = source_unicode_length;
104
105 /* If trace is enabled, insert this event into the trace buffer. */
106 FX_TRACE_IN_LINE_INSERT(FX_TRACE_UNICODE_SHORT_NAME_GET, media_ptr, source_unicode_name, source_unicode_length, destination_short_name, FX_TRACE_FILE_EVENTS, 0, 0)
107
108 /* Protect against other threads accessing the media. */
109 FX_PROTECT
110
111 /* Search the system for the supplied short name and return the unicode name if there is a match. */
112 status = _fx_unicode_directory_search(media_ptr, &dir_entry, (UCHAR *)destination_short_name, short_name_buffer_length, source_unicode_name, &temp_unicode_length, 0);
113
114 /* Release media protection. */
115 FX_UNPROTECT
116
117 /* Return successful completion status. */
118 return(status);
119 }
120
121
