[a9fa9b7] | 1 | /* |
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| 2 | * COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org> |
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| 3 | * |
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| 4 | * The license and distribution terms for this file may be |
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| 5 | * found in the file LICENSE in this distribution or at |
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| 6 | * http://www.rtems.com/license/LICENSE. |
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| 7 | * |
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| 8 | * $Id$ |
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| 9 | */ |
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| 10 | /** |
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| 11 | * @file |
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| 12 | * |
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| 13 | * @ingroup rtems-rfs |
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| 14 | * |
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| 15 | * RTEMS File Systems Buffer Routines for the RTEMS libblock BD buffer cache. |
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| 16 | * |
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| 17 | */ |
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| 18 | |
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[355b0544] | 19 | #if HAVE_CONFIG_H |
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| 20 | #include "config.h" |
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| 21 | #endif |
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| 22 | |
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[a9fa9b7] | 23 | #include <errno.h> |
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| 24 | |
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| 25 | #include <rtems/rfs/rtems-rfs-buffer.h> |
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| 26 | #include <rtems/rfs/rtems-rfs-file-system.h> |
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| 27 | |
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| 28 | #if RTEMS_RFS_USE_LIBBLOCK |
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| 29 | |
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| 30 | /** |
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| 31 | * Show errors. |
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| 32 | */ |
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| 33 | #define RTEMS_RFS_BUFFER_ERRORS 0 |
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| 34 | |
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| 35 | int |
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| 36 | rtems_rfs_buffer_bdbuf_request (rtems_rfs_file_system* fs, |
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| 37 | rtems_rfs_buffer_block block, |
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| 38 | bool read, |
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| 39 | rtems_rfs_buffer** buffer) |
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| 40 | { |
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| 41 | rtems_status_code sc; |
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| 42 | int rc = 0; |
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| 43 | |
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| 44 | if (read) |
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| 45 | sc = rtems_bdbuf_read (rtems_rfs_fs_device (fs), block, buffer); |
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| 46 | else |
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| 47 | sc = rtems_bdbuf_get (rtems_rfs_fs_device (fs), block, buffer); |
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| 48 | |
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| 49 | if (sc != RTEMS_SUCCESSFUL) |
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| 50 | { |
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| 51 | #if RTEMS_RFS_BUFFER_ERRORS |
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| 52 | printf ("rtems-rfs: buffer-bdbuf-request: block=%lu: bdbuf-%s: %d: %s\n", |
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| 53 | block, read ? "read" : "get", sc, rtems_status_text (sc)); |
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| 54 | #endif |
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| 55 | rc = EIO; |
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| 56 | } |
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| 57 | |
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| 58 | return rc; |
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| 59 | } |
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| 60 | |
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| 61 | int |
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| 62 | rtems_rfs_buffer_bdbuf_release (rtems_rfs_buffer* buffer, |
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| 63 | bool modified) |
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| 64 | { |
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| 65 | rtems_status_code sc; |
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| 66 | int rc = 0; |
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| 67 | |
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| 68 | if (rtems_rfs_trace (RTEMS_RFS_TRACE_BUFFER_RELEASE)) |
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| 69 | printf ("rtems-rfs: bdbuf-release: block=%lu bdbuf=%lu %s\n", |
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| 70 | (rtems_rfs_buffer_block) buffer->user, |
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| 71 | buffer->block, modified ? "(modified)" : ""); |
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| 72 | |
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| 73 | if (modified) |
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| 74 | sc = rtems_bdbuf_release_modified (buffer); |
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| 75 | else |
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| 76 | sc = rtems_bdbuf_release (buffer); |
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| 77 | |
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| 78 | if (sc != RTEMS_SUCCESSFUL) |
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| 79 | { |
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| 80 | #if RTEMS_RFS_BUFFER_ERRORS |
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| 81 | printf ("rtems-rfs: buffer-release: bdbuf-%s: %s(%d)\n", |
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| 82 | modified ? "modified" : "not-modified", |
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| 83 | rtems_status_text (sc), sc); |
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| 84 | #endif |
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| 85 | rc = EIO; |
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| 86 | } |
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| 87 | |
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| 88 | return rc; |
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| 89 | } |
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| 90 | |
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| 91 | #endif |
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