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Diffstat (limited to 'fs/debugfs/file.c')
-rw-r--r--fs/debugfs/file.c67
1 files changed, 29 insertions, 38 deletions
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 548556ff250..efc97d9b786 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -45,44 +45,15 @@ struct file_operations debugfs_file_operations = {
.open = default_open,
};
-#define simple_type(type, format, temptype, strtolfn) \
-static ssize_t read_file_##type(struct file *file, char __user *user_buf, \
- size_t count, loff_t *ppos) \
-{ \
- char buf[32]; \
- type *val = file->private_data; \
- \
- snprintf(buf, sizeof(buf), format "\n", *val); \
- return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));\
-} \
-static ssize_t write_file_##type(struct file *file, const char __user *user_buf,\
- size_t count, loff_t *ppos) \
-{ \
- char *endp; \
- char buf[32]; \
- int buf_size; \
- type *val = file->private_data; \
- temptype tmp; \
- \
- memset(buf, 0x00, sizeof(buf)); \
- buf_size = min(count, (sizeof(buf)-1)); \
- if (copy_from_user(buf, user_buf, buf_size)) \
- return -EFAULT; \
- \
- tmp = strtolfn(buf, &endp, 0); \
- if ((endp == buf) || ((type)tmp != tmp)) \
- return -EINVAL; \
- *val = tmp; \
- return count; \
-} \
-static struct file_operations fops_##type = { \
- .read = read_file_##type, \
- .write = write_file_##type, \
- .open = default_open, \
-};
-simple_type(u8, "%c", unsigned long, simple_strtoul);
-simple_type(u16, "%hi", unsigned long, simple_strtoul);
-simple_type(u32, "%i", unsigned long, simple_strtoul);
+static void debugfs_u8_set(void *data, u64 val)
+{
+ *(u8 *)data = val;
+}
+static u64 debugfs_u8_get(void *data)
+{
+ return *(u8 *)data;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_u8, debugfs_u8_get, debugfs_u8_set, "%llu\n");
/**
* debugfs_create_u8 - create a file in the debugfs filesystem that is used to read and write a unsigned 8 bit value.
@@ -116,6 +87,16 @@ struct dentry *debugfs_create_u8(const char *name, mode_t mode,
}
EXPORT_SYMBOL_GPL(debugfs_create_u8);
+static void debugfs_u16_set(void *data, u64 val)
+{
+ *(u16 *)data = val;
+}
+static u64 debugfs_u16_get(void *data)
+{
+ return *(u16 *)data;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_u16, debugfs_u16_get, debugfs_u16_set, "%llu\n");
+
/**
* debugfs_create_u16 - create a file in the debugfs filesystem that is used to read and write a unsigned 8 bit value.
*
@@ -148,6 +129,16 @@ struct dentry *debugfs_create_u16(const char *name, mode_t mode,
}
EXPORT_SYMBOL_GPL(debugfs_create_u16);
+static void debugfs_u32_set(void *data, u64 val)
+{
+ *(u32 *)data = val;
+}
+static u64 debugfs_u32_get(void *data)
+{
+ return *(u32 *)data;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_u32, debugfs_u32_get, debugfs_u32_set, "%llu\n");
+
/**
* debugfs_create_u32 - create a file in the debugfs filesystem that is used to read and write a unsigned 8 bit value.
*