Changeset 4802dd7 in mainline for uspace/srv/bd/part/guid_part/guid_part.c

Timestamp:

2012-08-13T22:01:04Z (12 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

135486d, 71b0d4d4, 9dec6d4, cddcc4a3

Parents:

4820360

Message:

Factor out client and server IPC stubs for block devices.

File:

• uspace/srv/bd/part/guid_part/guid_part.c (modified) (8 diffs)

uspace/srv/bd/part/guid_part/guid_part.c

@@ -47 +47 @@
 #include <stdlib.h>
 #include <unistd.h>
-#include <ipc/bd.h>
 #include <async.h>
 #include <as.h>
+#include <bd_srv.h>
 #include <fibril_synch.h>
 #include <loc.h>
@@ -83 +83 @@
         /** Service representing the partition (outbound device) */
         service_id_t dsid;
+        /** Block device server structure */
+        bd_srv_t bd;
         /** Points to next partition structure. */
         struct part *next;
@@ -100 +102 @@
 static void gpt_pte_to_part(const gpt_entry_t *pte, part_t *part);
 static void gpt_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg);
-static int gpt_bd_read(part_t *p, aoff64_t ba, size_t cnt, void *buf);
-static int gpt_bd_write(part_t *p, aoff64_t ba, size_t cnt, const void *buf);
 static int gpt_bsa_translate(part_t *p, aoff64_t ba, size_t cnt, aoff64_t *gba);
+
+static int gpt_bd_open(bd_srv_t *);
+static int gpt_bd_close(bd_srv_t *);
+static int gpt_bd_read_blocks(bd_srv_t *, aoff64_t, size_t, void *, size_t);
+static int gpt_bd_write_blocks(bd_srv_t *, aoff64_t, size_t, const void *, size_t);
+static int gpt_bd_get_block_size(bd_srv_t *, size_t *);
+static int gpt_bd_get_num_blocks(bd_srv_t *, aoff64_t *);
+
+static bd_ops_t gpt_bd_ops = {
+        .open = gpt_bd_open,
+        .close = gpt_bd_close,
+        .read_blocks = gpt_bd_read_blocks,
+        .write_blocks = gpt_bd_write_blocks,
+        .get_block_size = gpt_bd_get_block_size,
+        .get_num_blocks = gpt_bd_get_num_blocks
+};
+
+static part_t *bd_srv_part(bd_srv_t *bd)
+{
+        return (part_t *)bd->arg;
+}
 
 int main(int argc, char **argv)
@@ -304 +325 @@
         }
 
+        bd_srv_init(&part->bd);
+        part->bd.ops = &gpt_bd_ops;
+        part->bd.arg = part;
+
         part->dsid = 0;
         part->next = NULL;
@@ -310 +335 @@
 static void gpt_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
 {
-        size_t comm_size;
-        void *fs_va = NULL;
-        ipc_callid_t callid;
-        ipc_call_t call;
-        sysarg_t method;
         service_id_t dh;
-        unsigned int flags;
-        int retval;
-        aoff64_t ba;
-        size_t cnt;
         part_t *part;
 
@@ -341 +357 @@
         assert(part->present == true);
 
-        /* Answer the IPC_M_CONNECT_ME_TO call. */
-        async_answer_0(iid, EOK);
-
-        if (!async_share_out_receive(&callid, &comm_size, &flags)) {
-                async_answer_0(callid, EHANGUP);
-                return;
-        }
-
-        (void) async_share_out_finalize(callid, &fs_va);
-        if (fs_va == AS_MAP_FAILED) {
-                async_answer_0(callid, EHANGUP);
-                return;
-        }
-
-        while (true) {
-                callid = async_get_call(&call);
-                method = IPC_GET_IMETHOD(call);
-                
-                if (!method) {
-                        /* The other side has hung up. */
-                        async_answer_0(callid, EOK);
-                        return;
-                }
-                
-                switch (method) {
-                case BD_READ_BLOCKS:
-                        ba = MERGE_LOUP32(IPC_GET_ARG1(call),
-                            IPC_GET_ARG2(call));
-                        cnt = IPC_GET_ARG3(call);
-                        if (cnt * block_size > comm_size) {
-                                retval = ELIMIT;
-                                break;
-                        }
-                        retval = gpt_bd_read(part, ba, cnt, fs_va);
-                        break;
-                case BD_WRITE_BLOCKS:
-                        ba = MERGE_LOUP32(IPC_GET_ARG1(call),
-                            IPC_GET_ARG2(call));
-                        cnt = IPC_GET_ARG3(call);
-                        if (cnt * block_size > comm_size) {
-                                retval = ELIMIT;
-                                break;
-                        }
-                        retval = gpt_bd_write(part, ba, cnt, fs_va);
-                        break;
-                case BD_GET_BLOCK_SIZE:
-                        async_answer_1(callid, EOK, block_size);
-                        continue;
-                case BD_GET_NUM_BLOCKS:
-                        async_answer_2(callid, EOK, LOWER32(part->length),
-                            UPPER32(part->length));
-                        continue;
-                default:
-                        retval = EINVAL;
-                        break;
-                }
-                async_answer_0(callid, retval);
-        }
+        bd_conn(iid, icall, &part->bd);
+}
+
+/** Open device. */
+static int gpt_bd_open(bd_srv_t *bd)
+{
+        return EOK;
+}
+
+/** Close device. */
+static int gpt_bd_close(bd_srv_t *bd)
+{
+        return EOK;
 }
 
 /** Read blocks from partition. */
-static int gpt_bd_read(part_t *p, aoff64_t ba, size_t cnt, void *buf)
-{
+static int gpt_bd_read_blocks(bd_srv_t *bd, aoff64_t ba, size_t cnt, void *buf,
+    size_t size)
+{
+        part_t *p = bd_srv_part(bd);
         aoff64_t gba;
+
+        if (cnt * block_size < size)
+                return EINVAL;
 
         if (gpt_bsa_translate(p, ba, cnt, &gba) != EOK)
@@ -413 +389 @@
 
 /** Write blocks to partition. */
-static int gpt_bd_write(part_t *p, aoff64_t ba, size_t cnt, const void *buf)
-{
+static int gpt_bd_write_blocks(bd_srv_t *bd, aoff64_t ba, size_t cnt,
+    const void *buf, size_t size)
+{
+        part_t *p = bd_srv_part(bd);
         aoff64_t gba;
+
+        if (cnt * block_size < size)
+                return EINVAL;
 
         if (gpt_bsa_translate(p, ba, cnt, &gba) != EOK)
@@ -422 +403 @@
         return block_write_direct(indev_sid, gba, cnt, buf);
 }
+
+/** Get device block size. */
+static int gpt_bd_get_block_size(bd_srv_t *bd, size_t *rsize)
+{
+        *rsize = block_size;
+        return EOK;
+}
+
+/** Get number of blocks on device. */
+static int gpt_bd_get_num_blocks(bd_srv_t *bd, aoff64_t *rnb)
+{
+        part_t *part = bd_srv_part(bd);
+
+        *rnb = part->length;
+        return EOK;
+}
+
 
 /** Translate block segment address with range checking. */