Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	fx_directory_delete.c	Lines:	79	79	100.0 %
Date:	2026-03-06 18:49:02	Branches:	42	42	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                                                       */
/**                                                                       */
/**   Directory                                                           */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define FX_SOURCE_CODE


/* Include necessary system files.  */

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


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _fx_directory_delete                                PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    William E. Lamie, Microsoft Corporation                             */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function first attempts to find the specified directory.       */
/*    If found, the directory is examined to make sure it is empty.  If   */
/*    the directory is not empty, an error code is returned to the        */
/*    caller.  Otherwise, the directory will be deleted and its clusters  */
/*    will be made available.                                             */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    media_ptr                             Media control block pointer   */
/*    directory_name                        Directory name to delete      */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    return status                                                       */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _fx_directory_entry_read              Read a directory entry        */
/*    _fx_directory_entry_write             Write the new directory entry */
/*    _fx_directory_search                  Search for the file name in   */
/*                                          the directory structure       */
/*    _fx_utility_logical_sector_flush      Flush the written log sector  */
/*    _fx_utility_FAT_entry_read            Read FAT entries to calculate */
/*                                            the sub-directory size      */
/*    _fx_utility_FAT_entry_write           Write FAT entry               */
/*    _fx_utility_FAT_flush                 Flush FAT cache               */
/*    _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_directory_delete(FX_MEDIA *media_ptr, CHAR *directory_name)
{

UINT         status;
ULONG        cluster, next_cluster;
ULONG        i, directory_size;
FX_DIR_ENTRY dir_entry;
FX_DIR_ENTRY search_directory;
FX_DIR_ENTRY search_entry;



#ifndef FX_MEDIA_STATISTICS_DISABLE

    /* Increment the number of times this service has been called.  */
    media_ptr -> fx_media_directory_deletes++;
#endif

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

    /* Setup search pointer to media name buffer.  */
    search_directory.fx_dir_entry_name =  media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN * 2;

    /* Setup search entry pointer to media name buffer.  */
    search_entry.fx_dir_entry_name =  media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN * 3;

    /* Clear the short name string of the three file names that will be worked with.  */
    dir_entry.fx_dir_entry_short_name[0] =  0;
    search_directory.fx_dir_entry_short_name[0] =  0;
    search_entry.fx_dir_entry_short_name[0] =  0;

    /* 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_DIRECTORY_DELETE, media_ptr, directory_name, 0, 0, FX_TRACE_DIRECTORY_EVENTS, 0, 0)

    /* Protect against other threads accessing the 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);
    }

    /* Search the system for the supplied directory name.  */
    status =  _fx_directory_search(media_ptr, directory_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 code.  */
        return(status);
    }

    /* Check to make sure the found entry is a directory.  */
    if (!(dir_entry.fx_dir_entry_attributes & (UCHAR)(FX_DIRECTORY)))
    {

#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return the not a directory error code.  */
        return(FX_NOT_DIRECTORY);
    }

    /* Check if the entry is read only */
    if (dir_entry.fx_dir_entry_attributes & (UCHAR)(FX_READ_ONLY))
    {
#ifdef FX_ENABLE_FAULT_TOLERANT
        FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

        /* Release media protection.  */
        FX_UNPROTECT

        /* Return the not a directory error code.  */
        return(FX_WRITE_PROTECT);
    }

    /* Copy the directory entry to the search directory structure for
       looking at the specified sub-directory contents.  */
    search_directory =  dir_entry;

    /* Ensure that the search directory's last search cluster is cleared.  */
    search_directory.fx_dir_entry_last_search_cluster =  0;


    /* Calculate the directory size by counting the allocated
       clusters for it.  */
    i =        0;
    cluster =  search_directory.fx_dir_entry_cluster;
    while (cluster < media_ptr -> fx_media_fat_reserved)
    {

        /* Increment the cluster count.  */
        i++;

        /* Read the next FAT entry.  */
        status =  _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster);

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

        if ((cluster < FX_FAT_ENTRY_START) || (cluster == next_cluster) || (i > media_ptr -> fx_media_total_clusters))
        {
#ifdef FX_ENABLE_FAULT_TOLERANT
            FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

            /* Release media protection.  */
            FX_UNPROTECT

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

        cluster = next_cluster;
    }

    /* Now we can calculate the directory size.  */
    directory_size =  (((ULONG)media_ptr -> fx_media_bytes_per_sector) *
                       ((ULONG)media_ptr -> fx_media_sectors_per_cluster) * i) /
                       (ULONG)FX_DIR_ENTRY_SIZE;

    /* Also save this in the directory entry so we don't have to
       calculate it later.  */
    search_directory.fx_dir_entry_file_size =  directory_size;

    /* Make sure the new name is not in the current directory.  */
    /* The first two entries are skipped because they are just part of the sub-directory.  */
    i = 2;

    do
    {

        /* Read an entry from the directory.  */
        status = _fx_directory_entry_read(media_ptr, &search_directory, &i, &search_entry);

        /* Check for error status.  */
        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 error condition.  */
            return(status);
        }

        /* Determine if this is the last directory entry.  */
        if (search_entry.fx_dir_entry_name[0] == FX_DIR_ENTRY_DONE)
        {
            break;
        }


        /* Determine if this is an empty entry.  */
        if ((UCHAR)search_entry.fx_dir_entry_name[0] != (UCHAR)FX_DIR_ENTRY_FREE)
        {

#ifdef FX_ENABLE_FAULT_TOLERANT
            FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

            /* Release media protection.  */
            FX_UNPROTECT

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

        i++;
    } while (i < directory_size);

    /* At this point, we are going to delete the empty directory.  */

#ifndef FX_MEDIA_DISABLE_SEARCH_CACHE

    /* Invalidate the directory search saved information.  */
    media_ptr -> fx_media_last_found_name[0] =  FX_NULL;
#endif

    /* Mark the sub-directory entry as available.  */
    dir_entry.fx_dir_entry_name[0] =  (CHAR)FX_DIR_ENTRY_FREE;
    dir_entry.fx_dir_entry_short_name[0] =  (CHAR)FX_DIR_ENTRY_FREE;

    /* Now write out the directory entry.  */
    status =  _fx_directory_entry_write(media_ptr, &dir_entry);

    /* Determine if the write 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(status);
    }


    /* Walk through the directory's clusters and release them.  */
    cluster =  search_directory.fx_dir_entry_cluster;

    while (cluster < media_ptr -> fx_media_fat_reserved)
    {

        /* Increment the cluster count.  */
        i++;


        /* Read the next FAT entry.  */
        status =  _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster);

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

        if ((cluster < FX_FAT_ENTRY_START) || (cluster == next_cluster) || (i > media_ptr -> fx_media_total_clusters))
        {

#ifdef FX_ENABLE_FAULT_TOLERANT
            FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
#endif /* FX_ENABLE_FAULT_TOLERANT */

            /* Release media protection.  */
            FX_UNPROTECT

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

        /* Release the current cluster.  */

        status =  _fx_utility_FAT_entry_write(media_ptr, cluster, FX_FREE_CLUSTER);

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

        /* Increment the number of available clusters for the media.  */
        media_ptr -> fx_media_available_clusters++;

        /* Copy next cluster to current cluster.  */
        cluster =  next_cluster;
    }

#ifdef FX_FAULT_TOLERANT

    /* Flush the cached individual FAT entries */
    _fx_utility_FAT_flush(media_ptr);
#endif

    /* Flush the logical sector cache.  */
    status =  _fx_utility_logical_sector_flush(media_ptr, ((ULONG64) 1), (ULONG64)(media_ptr -> fx_media_sectors_per_FAT), FX_FALSE);

#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 media protection.  */
    FX_UNPROTECT

    /* Directory delete is complete, return 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			/** Directory */
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_system.h"
30			#include "fx_directory.h"
31			#include "fx_file.h"
32			#include "fx_utility.h"
33			#ifdef FX_ENABLE_FAULT_TOLERANT
34			#include "fx_fault_tolerant.h"
35			#endif /* FX_ENABLE_FAULT_TOLERANT */
36
37
38			/**************************************************************************/
39			/* */
40			/* FUNCTION RELEASE */
41			/* */
42			/* _fx_directory_delete PORTABLE C */
43			/* 6.1 */
44			/* AUTHOR */
45			/* */
46			/* William E. Lamie, Microsoft Corporation */
47			/* */
48			/* DESCRIPTION */
49			/* */
50			/* This function first attempts to find the specified directory. */
51			/* If found, the directory is examined to make sure it is empty. If */
52			/* the directory is not empty, an error code is returned to the */
53			/* caller. Otherwise, the directory will be deleted and its clusters */
54			/* will be made available. */
55			/* */
56			/* INPUT */
57			/* */
58			/* media_ptr Media control block pointer */
59			/* directory_name Directory name to delete */
60			/* */
61			/* OUTPUT */
62			/* */
63			/* return status */
64			/* */
65			/* CALLS */
66			/* */
67			/* _fx_directory_entry_read Read a directory entry */
68			/* _fx_directory_entry_write Write the new directory entry */
69			/* _fx_directory_search Search for the file name in */
70			/* the directory structure */
71			/* _fx_utility_logical_sector_flush Flush the written log sector */
72			/* _fx_utility_FAT_entry_read Read FAT entries to calculate */
73			/* the sub-directory size */
74			/* _fx_utility_FAT_entry_write Write FAT entry */
75			/* _fx_utility_FAT_flush Flush FAT cache */
76			/* _fx_fault_tolerant_transaction_start Start fault tolerant */
77			/* transaction */
78			/* _fx_fault_tolerant_transaction_end End fault tolerant transaction*/
79			/* _fx_fault_tolerant_recover Recover FAT chain */
80			/* _fx_fault_tolerant_reset_log_file Reset the log file */
81			/* */
82			/* CALLED BY */
83			/* */
84			/* Application Code */
85			/* */
86			/**************************************************************************/
87		218	UINT _fx_directory_delete(FX_MEDIA media_ptr, CHAR directory_name)
88			{
89
90			UINT status;
91			ULONG cluster, next_cluster;
92			ULONG i, directory_size;
93			FX_DIR_ENTRY dir_entry;
94			FX_DIR_ENTRY search_directory;
95			FX_DIR_ENTRY search_entry;
96
97
98
99			#ifndef FX_MEDIA_STATISTICS_DISABLE
100
101			/* Increment the number of times this service has been called. */
102		218	media_ptr -> fx_media_directory_deletes++;
103			#endif
104
105			/* Setup pointer to media name buffer. */
106		218	dir_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN;
107
108			/* Setup search pointer to media name buffer. */
109		218	search_directory.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN * 2;
110
111			/* Setup search entry pointer to media name buffer. */
112		218	search_entry.fx_dir_entry_name = media_ptr -> fx_media_name_buffer + FX_MAX_LONG_NAME_LEN * 3;
113
114			/* Clear the short name string of the three file names that will be worked with. */
115		218	dir_entry.fx_dir_entry_short_name[0] = 0;
116		218	search_directory.fx_dir_entry_short_name[0] = 0;
117		218	search_entry.fx_dir_entry_short_name[0] = 0;
118
119			/* Check the media to make sure it is open. */
120	✓✓	218	if (media_ptr -> fx_media_id != FX_MEDIA_ID)
121			{
122
123			/* Return the media not opened error. */
124		1	return(FX_MEDIA_NOT_OPEN);
125			}
126
127			/* If trace is enabled, insert this event into the trace buffer. */
128			FX_TRACE_IN_LINE_INSERT(FX_TRACE_DIRECTORY_DELETE, media_ptr, directory_name, 0, 0, FX_TRACE_DIRECTORY_EVENTS, 0, 0)
129
130			/* Protect against other threads accessing the media. */
131		217	FX_PROTECT
132
133			#ifdef FX_ENABLE_FAULT_TOLERANT
134			/* Start transaction. */
135			_fx_fault_tolerant_transaction_start(media_ptr);
136			#endif /* FX_ENABLE_FAULT_TOLERANT */
137
138			/* Check for write protect at the media level (set by driver). */
139	✓✓	217	if (media_ptr -> fx_media_driver_write_protect)
140			{
141
142			#ifdef FX_ENABLE_FAULT_TOLERANT
143			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
144			#endif /* FX_ENABLE_FAULT_TOLERANT */
145
146			/* Release media protection. */
147		1	FX_UNPROTECT
148
149			/* Return write protect error. */
150		1	return(FX_WRITE_PROTECT);
151			}
152
153			/* Search the system for the supplied directory name. */
154		216	status = _fx_directory_search(media_ptr, directory_name, &dir_entry, FX_NULL, FX_NULL);
155
156			/* Determine if the search was successful. */
157	✓✓	216	if (status != FX_SUCCESS)
158			{
159
160			#ifdef FX_ENABLE_FAULT_TOLERANT
161			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
162			#endif /* FX_ENABLE_FAULT_TOLERANT */
163
164			/* Release media protection. */
165		2	FX_UNPROTECT
166
167			/* Return the error code. */
168		2	return(status);
169			}
170
171			/* Check to make sure the found entry is a directory. */
172	✓✓	214	if (!(dir_entry.fx_dir_entry_attributes & (UCHAR)(FX_DIRECTORY)))
173			{
174
175			#ifdef FX_ENABLE_FAULT_TOLERANT
176			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
177			#endif /* FX_ENABLE_FAULT_TOLERANT */
178
179			/* Release media protection. */
180		1	FX_UNPROTECT
181
182			/* Return the not a directory error code. */
183		1	return(FX_NOT_DIRECTORY);
184			}
185
186			/* Check if the entry is read only */
187	✓✓	213	if (dir_entry.fx_dir_entry_attributes & (UCHAR)(FX_READ_ONLY))
188			{
189			#ifdef FX_ENABLE_FAULT_TOLERANT
190			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
191			#endif /* FX_ENABLE_FAULT_TOLERANT */
192
193			/* Release media protection. */
194		1	FX_UNPROTECT
195
196			/* Return the not a directory error code. */
197		1	return(FX_WRITE_PROTECT);
198			}
199
200			/* Copy the directory entry to the search directory structure for
201			looking at the specified sub-directory contents. */
202		212	search_directory = dir_entry;
203
204			/* Ensure that the search directory's last search cluster is cleared. */
205		212	search_directory.fx_dir_entry_last_search_cluster = 0;
206
207
208			/* Calculate the directory size by counting the allocated
209			clusters for it. */
210		212	i = 0;
211		212	cluster = search_directory.fx_dir_entry_cluster;
212	✓✓	460	while (cluster < media_ptr -> fx_media_fat_reserved)
213			{
214
215			/* Increment the cluster count. */
216		252	i++;
217
218			/* Read the next FAT entry. */
219		252	status = _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster);
220
221			/* Check the return status. */
222	✓✓	252	if (status != FX_SUCCESS)
223			{
224
225			#ifdef FX_ENABLE_FAULT_TOLERANT
226			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
227			#endif /* FX_ENABLE_FAULT_TOLERANT */
228
229			/* Release media protection. */
230		1	FX_UNPROTECT
231
232			/* Return the bad status. */
233		1	return(status);
234			}
235
236	✓✓✓✓ ✓✓	251	if ((cluster < FX_FAT_ENTRY_START) \|\| (cluster == next_cluster) \|\| (i > media_ptr -> fx_media_total_clusters))
237			{
238			#ifdef FX_ENABLE_FAULT_TOLERANT
239			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
240			#endif /* FX_ENABLE_FAULT_TOLERANT */
241
242			/* Release media protection. */
243		3	FX_UNPROTECT
244
245			/* Return the bad status. */
246		3	return(FX_FAT_READ_ERROR);
247			}
248
249		248	cluster = next_cluster;
250			}
251
252			/* Now we can calculate the directory size. */
253		208	directory_size = (((ULONG)media_ptr -> fx_media_bytes_per_sector) *
254		208	((ULONG)media_ptr -> fx_media_sectors_per_cluster) * i) /
255			(ULONG)FX_DIR_ENTRY_SIZE;
256
257			/* Also save this in the directory entry so we don't have to
258			calculate it later. */
259		208	search_directory.fx_dir_entry_file_size = directory_size;
260
261			/* Make sure the new name is not in the current directory. */
262			/* The first two entries are skipped because they are just part of the sub-directory. */
263		208	i = 2;
264
265			do
266			{
267
268			/* Read an entry from the directory. */
269		408	status = _fx_directory_entry_read(media_ptr, &search_directory, &i, &search_entry);
270
271			/* Check for error status. */
272	✓✓	408	if (status != FX_SUCCESS)
273			{
274
275			#ifdef FX_ENABLE_FAULT_TOLERANT
276			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
277			#endif /* FX_ENABLE_FAULT_TOLERANT */
278
279			/* Release media protection. */
280		1	FX_UNPROTECT
281
282			/* Return error condition. */
283		1	return(status);
284			}
285
286			/* Determine if this is the last directory entry. */
287	✓✓	407	if (search_entry.fx_dir_entry_name[0] == FX_DIR_ENTRY_DONE)
288			{
289		195	break;
290			}
291
292
293			/* Determine if this is an empty entry. */
294	✓✓	212	if ((UCHAR)search_entry.fx_dir_entry_name[0] != (UCHAR)FX_DIR_ENTRY_FREE)
295			{
296
297			#ifdef FX_ENABLE_FAULT_TOLERANT
298			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
299			#endif /* FX_ENABLE_FAULT_TOLERANT */
300
301			/* Release media protection. */
302		1	FX_UNPROTECT
303
304			/* Return error status. */
305		1	return(FX_DIR_NOT_EMPTY);
306			}
307
308		211	i++;
309	✓✓	211	} while (i < directory_size);
310
311			/* At this point, we are going to delete the empty directory. */
312
313			#ifndef FX_MEDIA_DISABLE_SEARCH_CACHE
314
315			/* Invalidate the directory search saved information. */
316		206	media_ptr -> fx_media_last_found_name[0] = FX_NULL;
317			#endif
318
319			/* Mark the sub-directory entry as available. */
320		206	dir_entry.fx_dir_entry_name[0] = (CHAR)FX_DIR_ENTRY_FREE;
321		206	dir_entry.fx_dir_entry_short_name[0] = (CHAR)FX_DIR_ENTRY_FREE;
322
323			/* Now write out the directory entry. */
324		206	status = _fx_directory_entry_write(media_ptr, &dir_entry);
325
326			/* Determine if the write was successful. */
327	✓✓	206	if (status != FX_SUCCESS)
328			{
329
330			#ifdef FX_ENABLE_FAULT_TOLERANT
331			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
332			#endif /* FX_ENABLE_FAULT_TOLERANT */
333
334			/* Release media protection. */
335		1	FX_UNPROTECT
336
337			/* Return the error code. */
338		1	return(status);
339			}
340
341
342			/* Walk through the directory's clusters and release them. */
343		205	cluster = search_directory.fx_dir_entry_cluster;
344
345	✓✓	444	while (cluster < media_ptr -> fx_media_fat_reserved)
346			{
347
348			/* Increment the cluster count. */
349		244	i++;
350
351
352			/* Read the next FAT entry. */
353		244	status = _fx_utility_FAT_entry_read(media_ptr, cluster, &next_cluster);
354
355			/* Check the return status. */
356	✓✓	244	if (status != FX_SUCCESS)
357			{
358
359			#ifdef FX_ENABLE_FAULT_TOLERANT
360			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
361			#endif /* FX_ENABLE_FAULT_TOLERANT */
362
363			/* Release media protection. */
364		1	FX_UNPROTECT
365
366			/* Return the bad status. */
367		1	return(status);
368			}
369
370	✓✓✓✓ ✓✓	243	if ((cluster < FX_FAT_ENTRY_START) \|\| (cluster == next_cluster) \|\| (i > media_ptr -> fx_media_total_clusters))
371			{
372
373			#ifdef FX_ENABLE_FAULT_TOLERANT
374			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
375			#endif /* FX_ENABLE_FAULT_TOLERANT */
376
377			/* Release media protection. */
378		3	FX_UNPROTECT
379
380			/* Return the bad status. */
381		3	return(FX_FAT_READ_ERROR);
382			}
383
384			/* Release the current cluster. */
385
386		240	status = _fx_utility_FAT_entry_write(media_ptr, cluster, FX_FREE_CLUSTER);
387
388			/* Check the return status. */
389	✓✓	240	if (status != FX_SUCCESS)
390			{
391
392			#ifdef FX_ENABLE_FAULT_TOLERANT
393			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
394			#endif /* FX_ENABLE_FAULT_TOLERANT */
395
396			/* Release media protection. */
397		1	FX_UNPROTECT
398
399			/* Return the bad status. */
400		1	return(status);
401			}
402
403			/* Increment the number of available clusters for the media. */
404		239	media_ptr -> fx_media_available_clusters++;
405
406			/* Copy next cluster to current cluster. */
407		239	cluster = next_cluster;
408			}
409
410			#ifdef FX_FAULT_TOLERANT
411
412			/* Flush the cached individual FAT entries */
413			_fx_utility_FAT_flush(media_ptr);
414			#endif
415
416			/* Flush the logical sector cache. */
417		200	status = _fx_utility_logical_sector_flush(media_ptr, ((ULONG64) 1), (ULONG64)(media_ptr -> fx_media_sectors_per_FAT), FX_FALSE);
418
419			#ifdef FX_ENABLE_FAULT_TOLERANT
420			/* Check for a bad status. */
421			if (status != FX_SUCCESS)
422			{
423
424			FX_FAULT_TOLERANT_TRANSACTION_FAIL(media_ptr);
425
426			/* Release media protection. */
427			FX_UNPROTECT
428
429			/* Return the bad status. */
430			return(status);
431			}
432
433			/* End transaction. */
434			status = _fx_fault_tolerant_transaction_end(media_ptr);
435			#endif /* FX_ENABLE_FAULT_TOLERANT */
436
437			/* Release media protection. */
438		200	FX_UNPROTECT
439
440			/* Directory delete is complete, return status. */
441		200	return(status);
442			}
443