Changeset 0bd5ff1 in mainline for uspace/srv/fs/exfat/exfat_ops.c

Timestamp:

2011-08-02T19:54:35Z (13 years ago)

Author:

Oleg Romanenko <romanenko.oleg@…>

Branches:

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

Children:

963ea42

Parents:

59c0777

Message:

Implement exfat_match

File:

• uspace/srv/fs/exfat/exfat_ops.c (modified) (1 diff)

uspace/srv/fs/exfat/exfat_ops.c

@@ -391 +391 @@
 int exfat_match(fs_node_t **rfn, fs_node_t *pfn, const char *component)
 {
-        /* TODO */
+        exfat_node_t *parentp = EXFAT_NODE(pfn);
+        char name[EXFAT_FILENAME_LEN+1];
+        exfat_file_dentry_t df;
+        exfat_stream_dentry_t ds;
+        devmap_handle_t devmap_handle;
+        int rc;
+
+        fibril_mutex_lock(&parentp->idx->lock);
+        devmap_handle = parentp->idx->devmap_handle;
+        fibril_mutex_unlock(&parentp->idx->lock);
+        
+        exfat_directory_t di;
+        rc = exfat_directory_open(parentp, &di);
+        if (rc != EOK)
+                return rc;
+
+        while (exfat_directory_read_file(&di, name, EXFAT_FILENAME_LEN, 
+            &df, &ds) == EOK) {
+                if (stricmp(name, component) == 0) {
+                        /* hit */
+                        exfat_node_t *nodep;
+                        aoff64_t o = di.pos % (BPS(di.bs) / sizeof(exfat_dentry_t));
+                        exfat_idx_t *idx = exfat_idx_get_by_pos(devmap_handle,
+                                parentp->firstc, di.bnum * DPS(di.bs) + o);
+                        if (!idx) {
+                                /*
+                                 * Can happen if memory is low or if we
+                                 * run out of 32-bit indices.
+                                 */
+                                rc = exfat_directory_close(&di);
+                                return (rc == EOK) ? ENOMEM : rc;
+                        }
+                        rc = exfat_node_get_core(&nodep, idx);
+                        fibril_mutex_unlock(&idx->lock);
+                        if (rc != EOK) {
+                                (void) exfat_directory_close(&di);
+                                return rc;
+                        }
+                        *rfn = FS_NODE(nodep);
+                        rc = exfat_directory_close(&di);
+                        if (rc != EOK)
+                                (void) exfat_node_put(*rfn);
+                        return rc;
+                } else {
+                        rc = exfat_directory_next(&di);
+                        if (rc != EOK)
+                                break;
+                }
+        }
+        (void) exfat_directory_close(&di);
         *rfn = NULL;
         return EOK;