sysfs & extents & badblocks

src/common/Makefile

@@ -34,6 +34,10 @@
 
 LIBRARY_NAME = pmemcommon
 SOURCE =\
+	badblock_filesrc_linux.c\
+	badblock_poolset.c\
+	badblock.c\
+	extent_linux.c\
 	file.c\
 	file_linux.c\
 	mmap.c\
@@ -45,6 +49,7 @@ SOURCE =\
 	pool_hdr.c\
 	pool_hdr_linux.c\
 	set.c\
+	sysfs.c\
 	util.c\
 	uuid.c\
 	uuid_$(shell uname -s | tr "[:upper:]" "[:lower:]").c\

src/common/badblock.c

@@ -0,0 +1,103 @@
+/*
+ * Copyright 2017, Intel Corporation
+ *
+ * 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 the copyright holder 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.
+ */
+
+/*
+ * badblock.c - implementation of the linux badblock query API
+ */
+#include "queue.h"
+#include "file.h"
+#include "os.h"
+#include "out.h"
+#include "sysfs.h"
+#include "extent.h"
+#include "badblock.h"
+#include "plugin.h"
+#ifndef _WIN32
+#include "badblock_filesrc.h"
+#include "badblock_poolset.h"
+#endif
+
+#define PLUGIN_BADBLOCK_SOURCE_VERSION 1
+
+struct badblock_source {
+	struct badblock_iter *(*iter_from_file)(const char *file);
+	SLIST_ENTRY(badblock_source) e;
+};
+
+static SLIST_HEAD(, badblock_source) sources;
+
+#ifndef _WIN32
+/*
+ * badblock_register_source -- registers a new badblock source
+ */
+static void
+badblock_register_source(const char *name, void *funcs, void *arg)
+{
+	LOG(3, "%s", name);
+
+	struct badblock_source *bsrc = Malloc(sizeof(*bsrc));
+	if (bsrc == NULL) {
+		ERR("failed to allocate badblock source");
+		return;
+	}
+
+	bsrc->iter_from_file = funcs;
+
+	SLIST_INSERT_HEAD(&sources, bsrc, e);
+}
+#endif
+
+/*
+ * badblock_new -- creates a new badblock iterator
+ */
+struct badblock_iter *
+badblock_new(const char *path)
+{
+	struct badblock_iter *iter;
+
+	if (SLIST_EMPTY(&sources)) {
+#ifndef _WIN32
+		badblock_poolset_source_add();
+		badblock_file_source_add();
+		plugin_load("badblock_source", PLUGIN_BADBLOCK_SOURCE_VERSION,
+			badblock_register_source, NULL);
+#endif
+	}
+
+	struct badblock_source *bsrc;
+	SLIST_FOREACH(bsrc, &sources, e) {
+		if ((iter = bsrc->iter_from_file(path)) != NULL)
+			break;
+	}
+
+	return iter;
+}

src/common/badblock.h

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2017, Intel Corporation
+ *
+ * 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 the copyright holder 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.
+ */
+
+/*
+ * badblock.h -- badblock query API
+ */
+
+#ifndef NVML_BADBLOCK_H
+#define NVML_BADBLOCK_H 1
+
+#include <stdint.h>
+#include <sys/types.h>
+
+struct badblock {
+	const char *file;
+	uint64_t offset;
+	uint64_t length;
+};
+
+struct badblock_iter {
+	struct {
+		int (*next)(struct badblock_iter *iter, struct badblock *b);
+		int (*clear)(struct badblock_iter *iter, struct badblock *b);
+		void (*del)(struct badblock_iter *iter);
+	} i_ops;
+	/* the rest of this structure is private */
+};
+
+struct badblock_iter *badblock_new(const char *path);
+
+#endif /* NVML_BADBLOCK_H */

src/common/badblock_filesrc.h

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2017, Intel Corporation
+ *
+ * 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 the copyright holder 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.
+ */
+
+/*
+ * badblock_filesrc.h - builtin file badblock source
+ */
+
+#ifndef NVML_BADBLOCK_FILESRC_LINUX_H
+#define NVML_BADBLOCK_FILESRC_LINUX_H 1
+
+void badblock_file_source_add(void);
+
+#endif