New upstream version 18.11-rc4

[deb_dpdk.git] / lib / librte_eal / common / eal_filesystem.h

diff --git a/lib/librte_eal/common/eal_filesystem.h b/lib/librte_eal/common/eal_filesystem.h
index 8acbd99..6e0331f 100644 (file)
--- a/lib/librte_eal/common/eal_filesystem.h
+++ b/lib/librte_eal/common/eal_filesystem.h
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2018 Intel Corporation
  */
 
 /**
@@ -41,7 +12,6 @@
 #define EAL_FILESYSTEM_H
 
 /** Path of rte config file. */
-#define RUNTIME_CONFIG_FMT "%s/.%s_config"
 
 #include <stdint.h>
 #include <limits.h>
@@ -51,43 +21,67 @@
 #include <rte_string_fns.h>
 #include "eal_internal_cfg.h"
 
-static const char *default_config_dir = "/var/run";
+/* sets up platform-specific runtime data dir */
+int
+eal_create_runtime_dir(void);
 
+#define RUNTIME_CONFIG_FNAME "config"
 static inline const char *
 eal_runtime_config_path(void)
 {
        static char buffer[PATH_MAX]; /* static so auto-zeroed */
-       const char *directory = default_config_dir;
-       const char *home_dir = getenv("HOME");
 
-       if (getuid() != 0 && home_dir != NULL)
-               directory = home_dir;
-       snprintf(buffer, sizeof(buffer) - 1, RUNTIME_CONFIG_FMT, directory,
-                       internal_config.hugefile_prefix);
+       snprintf(buffer, sizeof(buffer) - 1, "%s/%s", rte_eal_get_runtime_dir(),
+                       RUNTIME_CONFIG_FNAME);
        return buffer;
 }
 
-/** Path of hugepage info file. */
-#define HUGEPAGE_INFO_FMT "%s/.%s_hugepage_info"
+/** Path of primary/secondary communication unix socket file. */
+#define MP_SOCKET_FNAME "mp_socket"
+static inline const char *
+eal_mp_socket_path(void)
+{
+       static char buffer[PATH_MAX]; /* static so auto-zeroed */
+
+       snprintf(buffer, sizeof(buffer) - 1, "%s/%s", rte_eal_get_runtime_dir(),
+                       MP_SOCKET_FNAME);
+       return buffer;
+}
 
+#define FBARRAY_NAME_FMT "%s/fbarray_%s"
+static inline const char *
+eal_get_fbarray_path(char *buffer, size_t buflen, const char *name) {
+       snprintf(buffer, buflen, FBARRAY_NAME_FMT, rte_eal_get_runtime_dir(),
+                       name);
+       return buffer;
+}
+
+/** Path of hugepage info file. */
+#define HUGEPAGE_INFO_FNAME "hugepage_info"
 static inline const char *
 eal_hugepage_info_path(void)
 {
        static char buffer[PATH_MAX]; /* static so auto-zeroed */
-       const char *directory = default_config_dir;
-       const char *home_dir = getenv("HOME");
 
-       if (getuid() != 0 && home_dir != NULL)
-               directory = home_dir;
-       snprintf(buffer, sizeof(buffer) - 1, HUGEPAGE_INFO_FMT, directory,
-                       internal_config.hugefile_prefix);
+       snprintf(buffer, sizeof(buffer) - 1, "%s/%s", rte_eal_get_runtime_dir(),
+                       HUGEPAGE_INFO_FNAME);
+       return buffer;
+}
+
+/** Path of hugepage data file. */
+#define HUGEPAGE_DATA_FNAME "hugepage_data"
+static inline const char *
+eal_hugepage_data_path(void)
+{
+       static char buffer[PATH_MAX]; /* static so auto-zeroed */
+
+       snprintf(buffer, sizeof(buffer) - 1, "%s/%s", rte_eal_get_runtime_dir(),
+                       HUGEPAGE_DATA_FNAME);
        return buffer;
 }
 
 /** String format for hugepage map files. */
 #define HUGEFILE_FMT "%s/%smap_%d"
-#define TEMP_HUGEFILE_FMT "%s/%smap_temp_%d"
-
 static inline const char *
 eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id)
 {
@@ -97,6 +91,17 @@ eal_get_hugefile_path(char *buffer, size_t buflen, const char *hugedir, int f_id
        return buffer;
 }
 
+/** String format for hugepage map lock files. */
+#define HUGEFILE_LOCK_FMT "%s/map_%d.lock"
+static inline const char *
+eal_get_hugefile_lock_path(char *buffer, size_t buflen, int f_id)
+{
+       snprintf(buffer, buflen, HUGEFILE_LOCK_FMT, rte_eal_get_runtime_dir(),
+                       f_id);
+       buffer[buflen - 1] = '\0';
+       return buffer;
+}
+
 /** define the default filename prefix for the %s values above */
 #define HUGEFILE_PREFIX_DEFAULT "rte"