Make use of zlib optional
[fio.git] / client.c
index eb695ffb5b01df9627224958a5ed7d093d950dcd..13e84f64b8bfa29e5b0508b0abca2114c02a2646 100644 (file)
--- a/client.c
+++ b/client.c
@@ -14,7 +14,9 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <signal.h>
+#ifdef CONFIG_ZLIB
 #include <zlib.h>
+#endif
 
 #include "fio.h"
 #include "client.h"
@@ -296,9 +298,18 @@ int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
 
 static void probe_client(struct fio_client *client)
 {
+       struct cmd_client_probe_pdu pdu;
+       uint64_t tag;
+
        dprint(FD_NET, "client: send probe\n");
 
-       fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_PROBE, 0, &client->cmd_list);
+#ifdef CONFIG_ZLIB
+       pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
+#else
+       pdu.flags = 0;
+#endif
+
+       fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
 }
 
 static int fio_client_connect_ip(struct fio_client *client)
@@ -998,7 +1009,7 @@ static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
 
 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
 {
-       struct cmd_probe_pdu *probe = (struct cmd_probe_pdu *) cmd->payload;
+       struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
        const char *os, *arch;
        char bit[16];
 
@@ -1011,10 +1022,11 @@ static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
                os = "unknown";
 
        sprintf(bit, "%d-bit", probe->bpp * 8);
+       probe->flags = le64_to_cpu(probe->flags);
 
-       log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s\n",
+       log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
                probe->hostname, probe->bigendian, bit, os, arch,
-               probe->fio_version);
+               probe->fio_version, (unsigned long) probe->flags);
 
        if (!client->name)
                client->name = strdup((char *) probe->hostname);
@@ -1057,19 +1069,15 @@ static void convert_text(struct fio_net_cmd *cmd)
        pdu->log_usec   = le64_to_cpu(pdu->log_usec);
 }
 
-/*
- * This has been compressed on the server side, since it can be big.
- * Uncompress here.
- */
-static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
+static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
+                                             struct cmd_iolog_pdu *pdu)
 {
-       struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
+#ifdef CONFIG_ZLIB
        struct cmd_iolog_pdu *ret;
-       uint32_t nr_samples;
-       unsigned long total;
        z_stream stream;
+       uint32_t nr_samples;
+       size_t total;
        void *p;
-       int i;
 
        stream.zalloc = Z_NULL;
        stream.zfree = Z_NULL;
@@ -1087,10 +1095,9 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
 
        total = nr_samples * sizeof(struct io_sample);
        ret = malloc(total + sizeof(*pdu));
-       ret->thread_number = le32_to_cpu(pdu->thread_number);
        ret->nr_samples = nr_samples;
-       ret->log_type = le32_to_cpu(pdu->log_type);
-       strcpy((char *) ret->name, (char *) pdu->name);
+
+       memcpy(ret, pdu, sizeof(*pdu));
 
        p = (void *) ret + sizeof(*pdu);
 
@@ -1112,7 +1119,7 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
                        log_err("fio: inflate error %d\n", err);
                        free(ret);
                        ret = NULL;
-                       goto out;
+                       goto err;
                }
 
                this_len = this_chunk - stream.avail_out;
@@ -1120,6 +1127,46 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
                total -= this_len;
        }
 
+err:
+       inflateEnd(&stream);
+       return ret;
+#else
+       return NULL;
+#endif
+}
+
+/*
+ * This has been compressed on the server side, since it can be big.
+ * Uncompress here.
+ */
+static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
+{
+       struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
+       struct cmd_iolog_pdu *ret;
+       int i;
+
+       /*
+        * Convert if compressed and we support it. If it's not
+        * compressed, we need not do anything.
+        */
+       if (le32_to_cpu(pdu->compressed)) {
+#ifndef CONFIG_ZLIB
+               log_err("fio: server sent compressed data by mistake\n");
+               return NULL;
+#endif
+               ret = convert_iolog_gz(cmd, pdu);
+               if (!ret) {
+                       log_err("fio: failed decompressing log\n");
+                       return NULL;
+               }
+       } else
+               ret = pdu;
+
+       ret->thread_number      = le32_to_cpu(ret->thread_number);
+       ret->nr_samples         = le32_to_cpu(ret->nr_samples);
+       ret->log_type           = le32_to_cpu(ret->log_type);
+       ret->compressed         = le32_to_cpu(ret->compressed);
+
        for (i = 0; i < ret->nr_samples; i++) {
                struct io_sample *s = &ret->samples[i];
 
@@ -1129,8 +1176,6 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
                s->bs   = le32_to_cpu(s->bs);
        }
 
-out:
-       inflateEnd(&stream);
        return ret;
 }