dosfs: Support ctime and mtime

Implement ctime and mtime updates according to POSIX.  The ctime is
mapped to the FAT create time and date.  The mtime is mapped to the FAT
last modified time and date.  For the atime use the mtime for
simplicity.

1 files changed, 10 insertions, 66 deletions

diff --git a/cpukit/libfs/src/dosfs/msdos_file.c b/cpukit/libfs/src/dosfs/msdos_file.c
index 33fe525750..b678d8459c 100644
--- a/cpukit/libfs/src/dosfs/msdos_file.c
+++ b/cpukit/libfs/src/dosfs/msdos_file.c
@@ -30,70 +30,6 @@
 
 #include "msdos.h"
 
-static int
-msdos_file_update(rtems_libio_t *iop)
-{
-    int              rc = RC_OK;
-    fat_file_fd_t   *fat_fd = iop->pathinfo.node_access;
-
-    /*
-     * if fat-file descriptor is not marked as "removed", synchronize
-     * size, first cluster number, write time and date fields of the file
-     */
-    if (!FAT_FILE_IS_REMOVED(fat_fd))
-    {
-        rc = msdos_set_first_cluster_num(iop->pathinfo.mt_entry, fat_fd);
-        if (rc != RC_OK)
-        {
-            return rc;
-        }
-
-        rc = msdos_set_file_size(iop->pathinfo.mt_entry, fat_fd);
-        if (rc != RC_OK)
-        {
-            return rc;
-        }
-
-        rc = msdos_set_dir_wrt_time_and_date(iop->pathinfo.mt_entry, fat_fd);
-        if (rc != RC_OK)
-        {
-            return rc;
-        }
-    }
-
-    return rc;
-}
-
-/* msdos_file_close --
- *     Close fat-file which correspondes to the file. If fat-file descriptor
- *     which correspondes to the file is not marked "removed", synchronize
- *     size, first cluster number, write time and date fields of the file.
- *
- * PARAMETERS:
- *     iop - file control block
- *
- * RETURNS:
- *     RC_OK, if file closed successfully, or -1 if error occured (errno set
- *     appropriately)
- */
-int
-msdos_file_close(rtems_libio_t *iop)
-{
-    int                rc = RC_OK;
-    rtems_status_code  sc = RTEMS_SUCCESSFUL;
-    msdos_fs_info_t   *fs_info = iop->pathinfo.mt_entry->fs_info;
-
-    sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
-                                MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
-    if (sc != RTEMS_SUCCESSFUL)
-        rtems_set_errno_and_return_minus_one(EIO);
-
-    rc = msdos_file_update(iop);
-
-    rtems_semaphore_release(fs_info->vol_sema);
-    return rc;
-}
-
 /* msdos_file_read --
  *     This routine read from file pointed to by file control block into
  *     the specified data buffer provided by user
@@ -174,6 +110,9 @@ msdos_file_write(rtems_libio_t *iop,const void *buffer, size_t count)
     if (iop->offset > fat_fd->fat_file_size)
         fat_fd->fat_file_size = iop->offset;
 
+    if (ret > 0)
+        fat_file_set_ctime_mtime(fat_fd, time(NULL));
+
     rtems_semaphore_release(fs_info->vol_sema);
     return ret;
 }
@@ -211,6 +150,8 @@ msdos_file_stat(
     buf->st_blocks = ((fat_fd->fat_file_size + cl_mask) & ~cl_mask)
       >> FAT_SECTOR512_BITS;
     buf->st_blksize = fs_info->fat.vol.bpc;
+    buf->st_atime = fat_fd->mtime;
+    buf->st_ctime = fat_fd->ctime;
     buf->st_mtime = fat_fd->mtime;
 
     rtems_semaphore_release(fs_info->vol_sema);
@@ -259,8 +200,10 @@ msdos_file_ftruncate(rtems_libio_t *iop, off_t length)
         }
     }
 
-    if (rc == RC_OK) {
+    if (rc == RC_OK)
+    {
         fat_fd->fat_file_size = length;
+        fat_file_set_ctime_mtime(fat_fd, time(NULL));
     }
 
     rtems_semaphore_release(fs_info->vol_sema);
@@ -284,13 +227,14 @@ msdos_file_sync(rtems_libio_t *iop)
     int                rc = RC_OK;
     rtems_status_code  sc = RTEMS_SUCCESSFUL;
     msdos_fs_info_t   *fs_info = iop->pathinfo.mt_entry->fs_info;
+    fat_file_fd_t     *fat_fd = iop->pathinfo.node_access;
 
     sc = rtems_semaphore_obtain(fs_info->vol_sema, RTEMS_WAIT,
                                 MSDOS_VOLUME_SEMAPHORE_TIMEOUT);
     if (sc != RTEMS_SUCCESSFUL)
         rtems_set_errno_and_return_minus_one(EIO);
 
-    rc = msdos_file_update(iop);
+    rc = fat_file_update(&fs_info->fat, fat_fd);
     if (rc != RC_OK)
     {
         rtems_semaphore_release(fs_info->vol_sema);