Changeset 033ef7d3 in mainline for uspace/srv/fs/fat/fat_dentry.c

Timestamp:

2008-10-26T13:09:24Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0f57d0e

Parents:

6ebaff9

Message:

Move functionality related to FAT dentries to fat_dentry.c.

File:

• uspace/srv/fs/fat/fat_dentry.c (modified) (1 diff)

uspace/srv/fs/fat/fat_dentry.c

@@ -36 +36 @@
  */
 
+#include "fat_dentry.h"
+
+#define FAT_PAD                 ' ' 
+
+#define FAT_DENTRY_UNUSED       0x00
+#define FAT_DENTRY_E5_ESC       0x05
+#define FAT_DENTRY_DOT          0x2e
+#define FAT_DENTRY_ERASED       0xe5
+
+void dentry_name_canonify(fat_dentry_t *d, char *buf)
+{
+        int i;
+
+        for (i = 0; i < FAT_NAME_LEN; i++) {
+                if (d->name[i] == FAT_PAD)
+                        break;
+                if (d->name[i] == FAT_DENTRY_E5_ESC)
+                        *buf++ = 0xe5;
+                else
+                        *buf++ = d->name[i];
+        }
+        if (d->ext[0] != FAT_PAD)
+                *buf++ = '.';
+        for (i = 0; i < FAT_EXT_LEN; i++) {
+                if (d->ext[i] == FAT_PAD) {
+                        *buf = '\0';
+                        return;
+                }
+                if (d->ext[i] == FAT_DENTRY_E5_ESC)
+                        *buf++ = 0xe5;
+                else
+                        *buf++ = d->ext[i];
+        }
+        *buf = '\0';
+}
+
+fat_dentry_clsf_t fat_classify_dentry(fat_dentry_t *d)
+{
+        if (d->attr & FAT_ATTR_VOLLABEL) {
+                /* volume label entry */
+                return FAT_DENTRY_SKIP;
+        }
+        if (d->name[0] == FAT_DENTRY_ERASED) {
+                /* not-currently-used entry */
+                return FAT_DENTRY_SKIP;
+        }
+        if (d->name[0] == FAT_DENTRY_UNUSED) {
+                /* never used entry */
+                return FAT_DENTRY_LAST;
+        }
+        if (d->name[0] == FAT_DENTRY_DOT) {
+                /*
+                 * Most likely '.' or '..'.
+                 * It cannot occur in a regular file name.
+                 */
+                return FAT_DENTRY_SKIP;
+        }
+        return FAT_DENTRY_VALID;
+}
 
 /**