Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	fx_unicode_directory_create.c	Lines:	43	43	100.0 %
Date:	2026-03-06 18:49:02	Branches:	24	24	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** FileX Component                                                       */
/**                                                                       */
/**   Unicode                                                             */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define FX_SOURCE_CODE


/* Include necessary system files.  */

#include "fx_api.h"
#include "fx_unicode.h"
#include "fx_directory.h"
#include "fx_utility.h"
#ifdef FX_ENABLE_FAULT_TOLERANT
#include "fx_fault_tolerant.h"
#endif /* FX_ENABLE_FAULT_TOLERANT */


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _fx_unicode_directory_create                        PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function creates the specified unicode directory.              */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    media_ptr                             Pointer to media              */
/*    source_unicode_name                   Pointer to source unicode name*/
/*    source_unicode_length                 Unicode name length           */
/*    short_name                            Designated short name         */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    Completion Status                                                   */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _fx_directory_search                  Search directory              */
/*    _fx_unicode_directory_entry_change    Change unicode file name      */
/*    _fx_unicode_directory_search          Search for unicode name       */
/*    _fx_directory_create                  Create a directory            */
/*    _fx_fault_tolerant_transaction_start  Start fault tolerant          */
/*                                            transaction                 */
/*    _fx_fault_tolerant_transaction_end    End fault tolerant transaction*/
/*    _fx_fault_tolerant_recover            Recover FAT chain             */
/*    _fx_fault_tolerant_reset_log_file     Reset the log file            */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application Code                                                    */
/*                                                                        */
/**************************************************************************/
UINT  _fx_unicode_directory_create(FX_MEDIA *media_ptr, UCHAR *source_unicode_name, ULONG source_unicode_length, CHAR *short_name)
{

FX_DIR_ENTRY dir_entry;
UINT         i, status;
ULONG        temp_length;
UCHAR        destination_shortname[13];


    /* Setup pointer to media name buffer.  */
    dir_entry.fx_dir_entry_name =  media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;

    /* Clear the short name string.  */
    dir_entry.fx_dir_entry_short_name[0] =  FX_NULL;

    /* Set destination shortname to null.  */
    destination_shortname[0] =  FX_NULL;

    /* Clear the return short name.  */
    short_name[0] =  FX_NULL;

    /* Check the media to make sure it is open.  */
    if (media_ptr -> fx_media_id != FX_MEDIA_ID)
    {

        /* Return the media not opened error.  */
        return(FX_MEDIA_NOT_OPEN);
    }


    /* If trace is enabled, insert this event into the trace buffer.  */
    FX_TRACE_IN_LINE_INSERT(FX_TRACE_UNICODE_DIRECTORY_CREATE, media_ptr, source_unicode_name, source_unicode_length, short_name, FX_TRACE_DIRECTORY_EVENTS, 0, 0)

    /* Protect media.  */
    FX_PROTECT

#ifdef FX_ENABLE_FAULT_TOLERANT
    /* Start transaction. */
    _fx_fault_tolerant_transaction_start(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

    /* Check for write protect at the media level (set by driver).  */
    if (media_ptr -> fx_media_driver_write_protect)
    {
#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return write protect error.  */
        return(FX_WRITE_PROTECT);
    }

    /* Setup temporary length.  */
    temp_length =  source_unicode_length;

    /* Determine if the destination directory is already present.  */
    status =  _fx_unicode_directory_search(media_ptr, &dir_entry, destination_shortname, sizeof(destination_shortname), source_unicode_name, &temp_length, 0);

    /* Determine if the search was successful.  */
    if (status == FX_SUCCESS)
    {
#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return the error code.  */
        return(FX_ALREADY_CREATED);
    }

    /* Okay, at this point we need to create a new long directory name that has enough space for the
       eventual unicode directory name.  */

    /* Copy the characters from the unicode directory name and make sure they are
       within the ASCII range.  */
    _fx_unicode_temp_long_file_name[0] =  'z';
    for (i = 1; i < source_unicode_length; i++)
    {

        /* Build temporary long file name.  */
        _fx_unicode_temp_long_file_name[i] =  (UCHAR)((INT)'0' + (i % 9));
    }
    _fx_unicode_temp_long_file_name[i] =  FX_NULL;

    /* Loop to try different temp long file names... if necessary.  */
    do
    {

        /* Create a new directory with the temp long file name.  */
        status =  _fx_directory_create(media_ptr, (CHAR *)_fx_unicode_temp_long_file_name);

        /* Determine if there was an error.  */
        if (status == FX_ALREADY_CREATED)
        {

            /* Adjust the name slightly and try again!  */
            _fx_unicode_temp_long_file_name[0]--;

            /* Determine if it is outside the lower case boundary.  */
            if (_fx_unicode_temp_long_file_name[0] < 0x61)
            {
                break;
            }
        }
    } while (status == FX_ALREADY_CREATED);

    /* Determine if there was an error.  */
    if (status)
    {
#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return error.  */
        return(status);
    }

    /* Setup pointer to media name buffer.  */
    dir_entry.fx_dir_entry_name =  media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;

    /* Clear the short name string.  */
    dir_entry.fx_dir_entry_short_name[0] =  0;

    /* Search the system for the supplied file name.  */
    status =  _fx_directory_search(media_ptr, (CHAR *)_fx_unicode_temp_long_file_name, &dir_entry, FX_NULL, FX_NULL);

    /* Determine if the search was successful.  */
    if (status != FX_SUCCESS)
    {
#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return the error status.  */
        return(status);
    }

    /* We can now change the temporary long file name with the destination unicode name.  */
    status =  _fx_unicode_directory_entry_change(media_ptr, &dir_entry,  source_unicode_name, source_unicode_length);

    /* Was this successful?  */
    if (status == FX_SUCCESS)
    {

        /* Yes, copy the short file name to the destination.  */
        /* The new short name only have 8 characters, since we didn't include a dot in temp_long_file_name. */
        for (i = 0; i < FX_DIR_NAME_SIZE; i++)
        {

            /* Copy a character.  */
            short_name[i] =  dir_entry.fx_dir_entry_short_name[i];

            /* Are we done?  */
            if (short_name[i] == FX_NULL)
            {
                break;
            }
        }
    }

#ifdef FX_ENABLE_FAULT_TOLERANT
    /* Check for a bad status.  */
    if (status != FX_SUCCESS)
    {

        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return the bad status.  */
        return(status);
    }

    /* End transaction. */
    status = _fx_fault_tolerant_transaction_end(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

    /* Release the protection.  */
    FX_UNPROTECT

    /* Return completion status.  */
    return(status);
}



Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/***************************************************************************
2			* Copyright (c) 2024 Microsoft Corporation
3			* Copyright (c) 2026-present Eclipse ThreadX contributors
4			*
5			* This program and the accompanying materials are made available under the
6			* terms of the MIT License which is available at
7			* https://opensource.org/licenses/MIT.
8			*
9			* SPDX-License-Identifier: MIT
10			**************************************************************************/
11
12
13			/**************************************************************************/
14			/**************************************************************************/
15			/** */
16			/** FileX Component */
17			/** */
18			/** Unicode */
19			/** */
20			/**************************************************************************/
21			/**************************************************************************/
22
23			#define FX_SOURCE_CODE
24
25
26			/* Include necessary system files. */
27
28			#include "fx_api.h"
29			#include "fx_unicode.h"
30			#include "fx_directory.h"
31			#include "fx_utility.h"
32			#ifdef FX_ENABLE_FAULT_TOLERANT
33			#include "fx_fault_tolerant.h"
34			#endif /* FX_ENABLE_FAULT_TOLERANT */
35
36
37			/**************************************************************************/
38			/* */
39			/* FUNCTION RELEASE */
40			/* */
41			/* _fx_unicode_directory_create PORTABLE C */
42			/* 6.1 */
43			/* AUTHOR */
44			/* */
45			/* William E. Lamie, Microsoft Corporation */
46			/* */
47			/* DESCRIPTION */
48			/* */
49			/* This function creates the specified unicode directory. */
50			/* */
51			/* INPUT */
52			/* */
53			/* media_ptr Pointer to media */
54			/* source_unicode_name Pointer to source unicode name*/
55			/* source_unicode_length Unicode name length */
56			/* short_name Designated short name */
57			/* */
58			/* OUTPUT */
59			/* */
60			/* Completion Status */
61			/* */
62			/* CALLS */
63			/* */
64			/* _fx_directory_search Search directory */
65			/* _fx_unicode_directory_entry_change Change unicode file name */
66			/* _fx_unicode_directory_search Search for unicode name */
67			/* _fx_directory_create Create a directory */
68			/* _fx_fault_tolerant_transaction_start Start fault tolerant */
69			/* transaction */
70			/* _fx_fault_tolerant_transaction_end End fault tolerant transaction*/
71			/* _fx_fault_tolerant_recover Recover FAT chain */
72			/* _fx_fault_tolerant_reset_log_file Reset the log file */
73			/* */
74			/* CALLED BY */
75			/* */
76			/* Application Code */
77			/* */
78			/**************************************************************************/
79		350	UINT _fx_unicode_directory_create(FX_MEDIA media_ptr, UCHAR source_unicode_name, ULONG source_unicode_length, CHAR *short_name)
80			{
81
82			FX_DIR_ENTRY dir_entry;
83			UINT i, status;
84			ULONG temp_length;
85			UCHAR destination_shortname[13];
86
87
88			/* Setup pointer to media name buffer. */
89		350	dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;
90
91			/* Clear the short name string. */
92		350	dir_entry.fx_dir_entry_short_name[0] = FX_NULL;
93
94			/* Set destination shortname to null. */
95		350	destination_shortname[0] = FX_NULL;
96
97			/* Clear the return short name. */
98		350	short_name[0] = FX_NULL;
99
100			/* Check the media to make sure it is open. */
101	✓✓	350	if (media_ptr -> fx_media_id != FX_MEDIA_ID)
102			{
103
104			/* Return the media not opened error. */
105		1	return(FX_MEDIA_NOT_OPEN);
106			}
107
108
109			/* If trace is enabled, insert this event into the trace buffer. */
110			FX_TRACE_IN_LINE_INSERT(FX_TRACE_UNICODE_DIRECTORY_CREATE, media_ptr, source_unicode_name, source_unicode_length, short_name, FX_TRACE_DIRECTORY_EVENTS, 0, 0)
111
112			/* Protect media. */
113		349	FX_PROTECT
114
115			#ifdef FX_ENABLE_FAULT_TOLERANT
116			/* Start transaction. */
117			_fx_fault_tolerant_transaction_start(media_ptr);
118			#endif /* FX_ENABLE_FAULT_TOLERANT */
119
120			/* Check for write protect at the media level (set by driver). */
121	✓✓	349	if (media_ptr -> fx_media_driver_write_protect)
122			{
123			#ifdef FX_ENABLE_FAULT_TOLERANT
124			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
125			#endif /* FX_ENABLE_FAULT_TOLERANT */
126
127			/* Release media protection. */
128		1	FX_UNPROTECT
129
130			/* Return write protect error. */
131		1	return(FX_WRITE_PROTECT);
132			}
133
134			/* Setup temporary length. */
135		348	temp_length = source_unicode_length;
136
137			/* Determine if the destination directory is already present. */
138		348	status = _fx_unicode_directory_search(media_ptr, &dir_entry, destination_shortname, sizeof(destination_shortname), source_unicode_name, &temp_length, 0);
139
140			/* Determine if the search was successful. */
141	✓✓	348	if (status == FX_SUCCESS)
142			{
143			#ifdef FX_ENABLE_FAULT_TOLERANT
144			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
145			#endif /* FX_ENABLE_FAULT_TOLERANT */
146
147			/* Release media protection. */
148		9	FX_UNPROTECT
149
150			/* Return the error code. */
151		9	return(FX_ALREADY_CREATED);
152			}
153
154			/* Okay, at this point we need to create a new long directory name that has enough space for the
155			eventual unicode directory name. */
156
157			/* Copy the characters from the unicode directory name and make sure they are
158			within the ASCII range. */
159		339	_fx_unicode_temp_long_file_name[0] = 'z';
160	✓✓	2263	for (i = 1; i < source_unicode_length; i++)
161			{
162
163			/* Build temporary long file name. */
164		1924	_fx_unicode_temp_long_file_name[i] = (UCHAR)((INT)'0' + (i % 9));
165			}
166		339	_fx_unicode_temp_long_file_name[i] = FX_NULL;
167
168			/* Loop to try different temp long file names... if necessary. */
169			do
170			{
171
172			/* Create a new directory with the temp long file name. */
173		2611	status = _fx_directory_create(media_ptr, (CHAR *)_fx_unicode_temp_long_file_name);
174
175			/* Determine if there was an error. */
176	✓✓	2611	if (status == FX_ALREADY_CREATED)
177			{
178
179			/* Adjust the name slightly and try again! */
180		2283	_fx_unicode_temp_long_file_name[0]--;
181
182			/* Determine if it is outside the lower case boundary. */
183	✓✓	2283	if (_fx_unicode_temp_long_file_name[0] < 0x61)
184			{
185		11	break;
186			}
187			}
188	✓✓	2600	} while (status == FX_ALREADY_CREATED);
189
190			/* Determine if there was an error. */
191	✓✓	339	if (status)
192			{
193			#ifdef FX_ENABLE_FAULT_TOLERANT
194			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
195			#endif /* FX_ENABLE_FAULT_TOLERANT */
196
197			/* Release media protection. */
198		95	FX_UNPROTECT
199
200			/* Return error. */
201		95	return(status);
202			}
203
204			/* Setup pointer to media name buffer. */
205		244	dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;
206
207			/* Clear the short name string. */
208		244	dir_entry.fx_dir_entry_short_name[0] = 0;
209
210			/* Search the system for the supplied file name. */
211		244	status = _fx_directory_search(media_ptr, (CHAR *)_fx_unicode_temp_long_file_name, &dir_entry, FX_NULL, FX_NULL);
212
213			/* Determine if the search was successful. */
214	✓✓	244	if (status != FX_SUCCESS)
215			{
216			#ifdef FX_ENABLE_FAULT_TOLERANT
217			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
218			#endif /* FX_ENABLE_FAULT_TOLERANT */
219
220			/* Release media protection. */
221		5	FX_UNPROTECT
222
223			/* Return the error status. */
224		5	return(status);
225			}
226
227			/* We can now change the temporary long file name with the destination unicode name. */
228		239	status = _fx_unicode_directory_entry_change(media_ptr, &dir_entry, source_unicode_name, source_unicode_length);
229
230			/* Was this successful? */
231	✓✓	239	if (status == FX_SUCCESS)
232			{
233
234			/* Yes, copy the short file name to the destination. */
235			/* The new short name only have 8 characters, since we didn't include a dot in temp_long_file_name. */
236	✓✓	1473	for (i = 0; i < FX_DIR_NAME_SIZE; i++)
237			{
238
239			/* Copy a character. */
240		1373	short_name[i] = dir_entry.fx_dir_entry_short_name[i];
241
242			/* Are we done? */
243	✓✓	1373	if (short_name[i] == FX_NULL)
244			{
245		137	break;
246			}
247			}
248			}
249
250			#ifdef FX_ENABLE_FAULT_TOLERANT
251			/* Check for a bad status. */
252			if (status != FX_SUCCESS)
253			{
254
255			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
256
257			/* Release media protection. */
258			FX_UNPROTECT
259
260			/* Return the bad status. */
261			return(status);
262			}
263
264			/* End transaction. */
265			status = _fx_fault_tolerant_transaction_end(media_ptr);
266			#endif /* FX_ENABLE_FAULT_TOLERANT */
267
268			/* Release the protection. */
269		239	FX_UNPROTECT
270
271			/* Return completion status. */
272		239	return(status);
273			}
274