fxe_file_open.c
| 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 | /** File */ | ||
| 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_file.h" | ||
| 30 | |||
| 31 | |||
| 32 | FX_CALLER_CHECKING_EXTERNS | ||
| 33 | |||
| 34 | |||
| 35 | /**************************************************************************/ | ||
| 36 | /* */ | ||
| 37 | /* FUNCTION RELEASE */ | ||
| 38 | /* */ | ||
| 39 | /* _fxe_file_open PORTABLE C */ | ||
| 40 | /* 6.1 */ | ||
| 41 | /* AUTHOR */ | ||
| 42 | /* */ | ||
| 43 | /* William E. Lamie, Microsoft Corporation */ | ||
| 44 | /* */ | ||
| 45 | /* DESCRIPTION */ | ||
| 46 | /* */ | ||
| 47 | /* This function checks for errors in the file open call. */ | ||
| 48 | /* */ | ||
| 49 | /* INPUT */ | ||
| 50 | /* */ | ||
| 51 | /* media_ptr Media control block pointer */ | ||
| 52 | /* file_ptr File control block pointer */ | ||
| 53 | /* file_name Name pointer */ | ||
| 54 | /* open_type Type of open requested */ | ||
| 55 | /* file_control_block_size Size of FX_FILE structure */ | ||
| 56 | /* */ | ||
| 57 | /* OUTPUT */ | ||
| 58 | /* */ | ||
| 59 | /* return status */ | ||
| 60 | /* */ | ||
| 61 | /* CALLS */ | ||
| 62 | /* */ | ||
| 63 | /* _fx_file_open Actual open file service */ | ||
| 64 | /* */ | ||
| 65 | /* CALLED BY */ | ||
| 66 | /* */ | ||
| 67 | /* Application Code */ | ||
| 68 | /* */ | ||
| 69 | /**************************************************************************/ | ||
| 70 | 6957441 | UINT _fxe_file_open(FX_MEDIA *media_ptr, FX_FILE *file_ptr, CHAR *file_name, UINT open_type, UINT file_control_block_size) | |
| 71 | { | ||
| 72 | |||
| 73 | UINT status; | ||
| 74 | FX_FILE *current_file; | ||
| 75 | ULONG open_count; | ||
| 76 | |||
| 77 | |||
| 78 | /* Check for a null media or file pointer. */ | ||
| 79 |
8/8✓ Branch 2 → 3 taken 6957433 times.
✓ Branch 2 → 6 taken 8 times.
✓ Branch 3 → 4 taken 6957425 times.
✓ Branch 3 → 6 taken 8 times.
✓ Branch 4 → 5 taken 6956735 times.
✓ Branch 4 → 6 taken 690 times.
✓ Branch 5 → 6 taken 690 times.
✓ Branch 5 → 7 taken 6956045 times.
|
6957441 | if ((media_ptr == FX_NULL) || (media_ptr -> fx_media_id != FX_MEDIA_ID) || (file_ptr == FX_NULL) || (file_control_block_size != sizeof(FX_FILE))) |
| 80 | { | ||
| 81 | 1396 | return(FX_PTR_ERROR); | |
| 82 | } | ||
| 83 | |||
| 84 | /* Check for an invalid open type. */ | ||
| 85 |
6/6✓ Branch 7 → 8 taken 3544573 times.
✓ Branch 7 → 11 taken 3411472 times.
✓ Branch 8 → 9 taken 3544557 times.
✓ Branch 8 → 11 taken 16 times.
✓ Branch 9 → 10 taken 690 times.
✓ Branch 9 → 11 taken 3543867 times.
|
6956045 | if ((open_type != FX_OPEN_FOR_READ) && (open_type != FX_OPEN_FOR_READ_FAST) && (open_type != FX_OPEN_FOR_WRITE)) |
| 86 | { | ||
| 87 | 690 | return(FX_ACCESS_ERROR); | |
| 88 | } | ||
| 89 | |||
| 90 | /* Check for a valid caller. */ | ||
| 91 |
6/6✓ Branch 11 → 12 taken 6878897 times.
✓ Branch 11 → 14 taken 690 times.
✓ Branch 12 → 13 taken 6878207 times.
✓ Branch 12 → 14 taken 690 times.
✓ Branch 13 → 14 taken 690 times.
✓ Branch 13 → 15 taken 6877517 times.
|
6879587 | FX_CALLER_CHECKING_CODE |
| 92 | |||
| 93 | /* Get protection. */ | ||
| 94 | 6877517 | FX_PROTECT | |
| 95 | |||
| 96 | /* Check for a duplicate file open. */ | ||
| 97 | |||
| 98 | /* Loop to search the list for the same file handle. */ | ||
| 99 | 6953284 | current_file = media_ptr -> fx_media_opened_file_list; | |
| 100 | 6953284 | open_count = media_ptr -> fx_media_opened_file_count; | |
| 101 | |||
| 102 |
4/4✓ Branch 15 → 12 taken 268356 times.
✓ Branch 15 → 16 taken 75760 times.
✓ Branch 21 → 17 taken 268356 times.
✓ Branch 21 → 22 taken 6877508 times.
|
7489980 | while (open_count--) |
| 103 | { | ||
| 104 | |||
| 105 | /* See if a match exists. */ | ||
| 106 |
4/4✓ Branch 12 → 13 taken 8 times.
✓ Branch 12 → 14 taken 268348 times.
✓ Branch 17 → 18 taken 8 times.
✓ Branch 17 → 20 taken 268348 times.
|
536712 | if (file_ptr == current_file) |
| 107 | { | ||
| 108 | |||
| 109 | /* Release protection. */ | ||
| 110 | 8 | FX_UNPROTECT | |
| 111 | |||
| 112 | /* Return error. */ | ||
| 113 | 16 | return(FX_PTR_ERROR); | |
| 114 | } | ||
| 115 | |||
| 116 | /* Move to the next opened file. */ | ||
| 117 | 536696 | current_file = current_file -> fx_file_opened_next; | |
| 118 | } | ||
| 119 | |||
| 120 | /* Release protection. */ | ||
| 121 | 6877508 | FX_UNPROTECT | |
| 122 | |||
| 123 | /* Call actual file open service. */ | ||
| 124 | 6953268 | status = _fx_file_open(media_ptr, file_ptr, file_name, open_type); | |
| 125 | |||
| 126 | /* Open is complete, return status. */ | ||
| 127 | 6953263 | return(status); | |
| 128 | } | ||
| 129 | |||
| 130 |