* 2 as published by the Free Software Foundation.
*
* debugfs is for people to use instead of /proc or /sys.
- * See Documentation/DocBook/kernel-api for more details.
+ * See Documentation/DocBook/filesystems for more details.
*
*/
.follow_link = debugfs_follow_link,
};
-static void debugfs_u8_set(void *data, u64 val)
+static int debugfs_u8_set(void *data, u64 val)
{
*(u8 *)data = val;
+ return 0;
}
-static u64 debugfs_u8_get(void *data)
+static int debugfs_u8_get(void *data, u64 *val)
{
- return *(u8 *)data;
+ *val = *(u8 *)data;
+ return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_u8, debugfs_u8_get, debugfs_u8_set, "%llu\n");
}
EXPORT_SYMBOL_GPL(debugfs_create_u8);
-static void debugfs_u16_set(void *data, u64 val)
+static int debugfs_u16_set(void *data, u64 val)
{
*(u16 *)data = val;
+ return 0;
}
-static u64 debugfs_u16_get(void *data)
+static int debugfs_u16_get(void *data, u64 *val)
{
- return *(u16 *)data;
+ *val = *(u16 *)data;
+ return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_u16, debugfs_u16_get, debugfs_u16_set, "%llu\n");
}
EXPORT_SYMBOL_GPL(debugfs_create_u16);
-static void debugfs_u32_set(void *data, u64 val)
+static int debugfs_u32_set(void *data, u64 val)
{
*(u32 *)data = val;
+ return 0;
}
-static u64 debugfs_u32_get(void *data)
+static int debugfs_u32_get(void *data, u64 *val)
{
- return *(u32 *)data;
+ *val = *(u32 *)data;
+ return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_u32, debugfs_u32_get, debugfs_u32_set, "%llu\n");
}
EXPORT_SYMBOL_GPL(debugfs_create_u32);
-static void debugfs_u64_set(void *data, u64 val)
+static int debugfs_u64_set(void *data, u64 val)
{
*(u64 *)data = val;
+ return 0;
}
-static u64 debugfs_u64_get(void *data)
+static int debugfs_u64_get(void *data, u64 *val)
{
- return *(u64 *)data;
+ *val = *(u64 *)data;
+ return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(fops_u64, debugfs_u64_get, debugfs_u64_set, "%llu\n");
DEFINE_SIMPLE_ATTRIBUTE(fops_x32, debugfs_u32_get, debugfs_u32_set, "0x%08llx\n");
-/**
- * debugfs_create_x8 - create a debugfs file that is used to read and write an unsigned 8-bit value
- * debugfs_create_x16 - create a debugfs file that is used to read and write an unsigned 16-bit value
- * debugfs_create_x32 - create a debugfs file that is used to read and write an unsigned 32-bit value
+/*
+ * debugfs_create_x{8,16,32} - create a debugfs file that is used to read and write an unsigned {8,16,32}-bit value
*
- * These functions are exactly the same as the above functions, (but use a hex
- * output for the decimal challenged) for details look at the above unsigned
+ * These functions are exactly the same as the above functions (but use a hex
+ * output for the decimal challenged). For details look at the above unsigned
* decimal functions.
*/
+
+/**
+ * debugfs_create_x8 - create a debugfs file that is used to read and write an unsigned 8-bit value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
struct dentry *debugfs_create_x8(const char *name, mode_t mode,
struct dentry *parent, u8 *value)
{
}
EXPORT_SYMBOL_GPL(debugfs_create_x8);
+/**
+ * debugfs_create_x16 - create a debugfs file that is used to read and write an unsigned 16-bit value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
struct dentry *debugfs_create_x16(const char *name, mode_t mode,
struct dentry *parent, u16 *value)
{
}
EXPORT_SYMBOL_GPL(debugfs_create_x16);
+/**
+ * debugfs_create_x32 - create a debugfs file that is used to read and write an unsigned 32-bit value
+ * @name: a pointer to a string containing the name of the file to create.
+ * @mode: the permission that the file should have
+ * @parent: a pointer to the parent dentry for this file. This should be a
+ * directory dentry if set. If this parameter is %NULL, then the
+ * file will be created in the root of the debugfs filesystem.
+ * @value: a pointer to the variable that the file should read to and write
+ * from.
+ */
struct dentry *debugfs_create_x32(const char *name, mode_t mode,
struct dentry *parent, u32 *value)
{