linux-kernel - [PATCH v3 1/3] memory_accessor: new interface for reading/writing persistent memory

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1237239379-24186-2-git-send-email-khilman@deeprootsystems.com>
Date:	Mon, 16 Mar 2009 14:36:17 -0700
From:	Kevin Hilman <khilman@...prootsystems.com>
To:	linux-kernel@...r.kernel.org
Cc:	David Brownell <dbrownell@...rs.sourceforge.net>,
	Kevin Hilman <khilman@...prootsystems.com>
Subject: [PATCH v3 1/3] memory_accessor: new interface for reading/writing persistent memory

This patch adds an interface by which other kernel code can read/write
persistent memory such as I2C or SPI EEPROMs, or devices which provide
NVRAM.  Use cases include storage of board-specific configuration data
like Ethernet addresses and sensor calibrations.

Original idea, review and improvement suggestions by David Brownell.

Acked-by: David Brownell <dbrownell@...rs.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@...prootsystems.com>
---
 include/linux/memory.h |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/include/linux/memory.h b/include/linux/memory.h
index 3fdc108..42767d1 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -99,4 +99,15 @@ enum mem_add_context { BOOT, HOTPLUG };
 #define hotplug_memory_notifier(fn, pri) do { } while (0)
 #endif
 
+/*
+ * 'struct memory_accessor' is a generic interface to provide
+ * in-kernel access to persistent memory such as i2c or SPI EEPROMs
+ */
+struct memory_accessor {
+	ssize_t (*read)(struct memory_accessor *, char *buf, off_t offset,
+			size_t count);
+	ssize_t (*write)(struct memory_accessor *, const char *buf,
+			 off_t offset, size_t count);
+};
+
 #endif /* _LINUX_MEMORY_H_ */
-- 
1.6.1.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/