io.c File Reference

#include "mos/mm/mm.h"
#include "mos/platform/platform.h"
#include <mos/io/io.h>
#include <mos/io/io_types.h>
#include <mos/mm/mm_types.h>
#include <mos/mos_global.h>
#include <mos/syslog/printk.h>
#include <mos_stdio.h>

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Functions
static size_t	_null_read (io_t *io, void *buffer, size_t size)
static size_t	_null_write (io_t *io, const void *buffer, size_t size)
void	io_init (io_t *io, io_type_t type, io_flags_t flags, const io_op_t *ops)
io_t *	io_ref (io_t *io)
io_t *	io_unref (io_t *io)
bool	io_valid (const io_t *io)
size_t	io_read (io_t *io, void *buf, size_t count)
size_t	io_pread (io_t *io, void *buf, size_t count, off_t offset)
size_t	io_write (io_t *io, const void *buf, size_t count)
off_t	io_seek (io_t *io, off_t offset, io_seek_whence_t whence)
off_t	io_tell (io_t *io)
bool	io_mmap_perm_check (io_t *io, vm_flags flags, bool is_private)
bool	io_mmap (io_t *io, vmap_t *vmap, off_t offset)
bool	io_munmap (io_t *io, vmap_t *vmap, bool *unmapped)
void	io_get_name (const io_t *io, char *buf, size_t size)

Variables
static io_t	io_null_impl
io_t *const	io_null = &io_null_impl

Function Documentation

_null_read()

static size_t _null_read ( io_t * io, void * buffer, size_t size )

static

Definition at line 13 of file io.c.

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_null_write()

static size_t _null_write ( io_t * io, const void * buffer, size_t size )

static

Definition at line 21 of file io.c.

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io_init()

void io_init	(	io_t *	io,
		io_type_t	type,
		io_flags_t	flags,
		const io_op_t *	ops )

Definition at line 44 of file io.c.

Referenced by console_register(), ipc_conn_io_create(), ipc_create(), pipeio_create(), and vfs_do_open_dentry().

io_ref()

io_t * io_ref

(

io_t *

io

)

Definition at line 73 of file io.c.

Referenced by elf_create_process(), elf_fill_process(), elf_map_interpreter(), io_dup(), io_dup2(), io_mmap(), mm_clone_vmap_locked(), process_attach_ref_fd(), process_do_execveat(), process_do_fork(), and vmap_split().

io_unref()

io_t * io_unref

(

io_t *

io

)

Definition at line 92 of file io.c.

Referenced by elf_create_process(), elf_fill_process(), elf_map_interpreter(), io_munmap(), process_detach_fd(), process_do_execveat(), and process_exit().

io_valid()

bool io_valid

(

const io_t *

io

)

Definition at line 127 of file io.c.

Referenced by process_detach_fd(), process_do_execveat(), process_do_fork(), process_exit(), and vfs_fstatat().

io_read()

size_t io_read	(	io_t *	io,
		void *	buf,
		size_t	count )

Definition at line 132 of file io.c.

Referenced by io_pread().

io_pread()

size_t io_pread	(	io_t *	io,
		void *	buf,
		size_t	count,
		off_t	offset )

Definition at line 151 of file io.c.

Referenced by elf_read_file().

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io_write()

size_t io_write	(	io_t *	io,
		const void *	buf,
		size_t	count )

Definition at line 180 of file io.c.

io_seek()

off_t io_seek	(	io_t *	io,
		off_t	offset,
		io_seek_whence_t	whence )

Definition at line 199 of file io.c.

Referenced by io_pread(), and io_tell().

io_tell()

off_t io_tell

(

io_t *

io

)

Definition at line 218 of file io.c.

Referenced by io_pread().

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io_mmap_perm_check()

bool io_mmap_perm_check	(	io_t *	io,
		vm_flags	flags,
		bool	is_private )

Definition at line 224 of file io.c.

Referenced by io_mmap(), and vm_protect().

io_mmap()

bool io_mmap	(	io_t *	io,
		vmap_t *	vmap,
		off_t	offset )

Definition at line 254 of file io.c.

Referenced by mmap_file().

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io_munmap()

bool io_munmap	(	io_t *	io,
		vmap_t *	vmap,
		bool *	unmapped )

Definition at line 273 of file io.c.

Referenced by vmap_destroy().

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io_get_name()

void io_get_name	(	const io_t *	io,
		char *	buf,
		size_t	size )

Definition at line 307 of file io.c.

Referenced by process_sysfs_vmap_stat(), vsnprintf_do_pointer_kernel(), and x86_dump_stack_at().

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Variable Documentation

io_null_impl

io_t io_null_impl

static

Initial value:

= {
    .refcount = 1, 
    .type = IO_NULL,
    .flags = IO_READABLE | IO_WRITABLE,
    .ops =
        &(io_op_t){
            .read = _null_read,
            .write = _null_write,
            .seek = NULL,
            .close = NULL,
        },
}

Definition at line 29 of file io.c.

io_null

io_t* const io_null = &io_null_impl

Definition at line 42 of file io.c.

Referenced by process_new().