8 use system_error::SystemError;
60     pub fn callback_read(&self, buf: &mut [u8], offset: usize) -> Result<usize, SystemError> {  in callback_read()  argument
83     pub fn callback_write(&self, buf: &[u8], offset: usize) -> Result<usize, SystemError> {  in callback_write()  argument
109     ) -> Result<(), SystemError> {  in create_file()  argument
110         let inode = kobj.inode().ok_or(SystemError::EINVAL)?;  in create_file()
120     ) -> Result<(), SystemError> {  in add_file_with_mode()  argument
134             SystemError::EINVAL  in add_file_with_mode()
164             if e == SystemError::EEXIST {  in add_file_with_mode()
208     ) -> Result<(), SystemError> {  in create_bin_file()  argument
209         let inode = kobj.inode().ok_or(SystemError::EINVAL)?;  in create_bin_file()
238     ) -> Result<(), SystemError> {  in add_bin_file_with_mode()  argument
276             if e == SystemError::EEXIST {  in add_bin_file_with_mode()
290     fn open(&self, _data: KernCallbackData) -> Result<(), SystemError> {  in open()  argument
299     ) -> Result<usize, SystemError> {  in read()  argument
308     ) -> Result<usize, SystemError> {  in write()  argument
313     fn poll(&self, _data: KernCallbackData) -> Result<PollStatus, SystemError> {  in poll()  argument
322     fn open(&self, _data: KernCallbackData) -> Result<(), SystemError> {  in open()  argument
331     ) -> Result<usize, SystemError> {  in read()  argument
340     ) -> Result<usize, SystemError> {  in write()  argument
341         return Err(SystemError::EPERM);  in write()
345     fn poll(&self, _data: KernCallbackData) -> Result<PollStatus, SystemError> {  in poll()  argument
354     fn open(&self, _data: KernCallbackData) -> Result<(), SystemError> {  in open()  argument
363     ) -> Result<usize, SystemError> {  in read()  argument
364         return Err(SystemError::EPERM);  in read()
372     ) -> Result<usize, SystemError> {  in write()  argument
377     fn poll(&self, _data: KernCallbackData) -> Result<PollStatus, SystemError> {  in poll()  argument
386     fn open(&self, _data: KernCallbackData) -> Result<(), SystemError> {  in open()  argument
395     ) -> Result<usize, SystemError> {  in read()  argument
396         return Err(SystemError::EPERM);  in read()
404     ) -> Result<usize, SystemError> {  in write()  argument
405         return Err(SystemError::EPERM);  in write()
409     fn poll(&self, _data: KernCallbackData) -> Result<PollStatus, SystemError> {  in poll()  argument
414 pub fn sysfs_emit_str(buf: &mut [u8], s: &str) -> Result<usize, SystemError> {  in sysfs_emit_str()  argument