[Suspend2][ 7/7] [Suspend2] Suspend2 proc.h

[Nigel Cunningham <nigel@suspend2.net>]

Header file for Suspend2 proc entries - define the data structure used to
define our proc entries, flags and the register/unregister routines.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/proc.h |   76 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 76 insertions(+), 0 deletions(-)

diff --git a/kernel/power/proc.h b/kernel/power/proc.h
new file mode 100644
index 0000000..688f8d2
--- /dev/null
+++ b/kernel/power/proc.h
@@ -0,0 +1,76 @@
+/*
+ * kernel/power/proc.h
+ *
+ * Copyright (C) 2004-2006 Nigel Cunningham <nigel@suspend2.net>
+ *
+ * This file is released under the GPLv2.
+ *
+ * It provides declarations for suspend to use in managing
+ * /proc/suspend2. When we switch to kobjects,
+ * this will become redundant.
+ *
+ */
+
+#include <linux/proc_fs.h>
+
+struct suspend_proc_data {
+	char *filename;
+	int permissions;
+	int type;
+	int needs_storage_manager;
+	union {
+		struct {
+			unsigned long *bit_vector;
+			int bit;
+		} bit;
+		struct {
+			int *variable;
+			int minimum;
+			int maximum;
+		} integer;
+		struct {
+			long *variable;
+			long minimum;
+			long maximum;
+		} a_long;
+		struct {
+			unsigned long *variable;
+			unsigned long minimum;
+			unsigned long maximum;
+		} ul;
+		struct {
+			char *variable;
+			int max_length;
+		} string;
+		struct {
+			read_proc_t *read_proc;
+			write_proc_t *write_proc;
+			void *data;
+		} special;
+	} data;
+	
+	/* Side effects routines. Used, eg, for reparsing the
+	 * resume2 entry when it changes */
+	void (*read_proc) (void);
+	void (*write_proc) (void); 
+	struct list_head proc_data_list;
+};
+
+enum {
+	SUSPEND_PROC_DATA_NONE,
+	SUSPEND_PROC_DATA_CUSTOM,
+	SUSPEND_PROC_DATA_BIT,
+	SUSPEND_PROC_DATA_INTEGER,
+	SUSPEND_PROC_DATA_UL,
+	SUSPEND_PROC_DATA_LONG,
+	SUSPEND_PROC_DATA_STRING
+};
+
+#define PROC_WRITEONLY 0200
+#define PROC_READONLY 0400
+#define PROC_RW 0600
+
+struct proc_dir_entry *suspend_register_procfile(
+		struct suspend_proc_data *suspend_proc_data);
+void suspend_unregister_procfile(struct suspend_proc_data *suspend_proc_data);
+

--
Nigel Cunningham		nigel at suspend2 dot net