ios-linuxkit/fs/dev.c at master · adeelahmad/ios-linuxkit

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#include "kernel/errno.h"

#include "fs/fd.h"

#include "fs/dev.h"

#include "fs/mem.h"

#include "fs/tty.h"

#include "fs/dyndev.h"

#include "fs/devices.h"

struct dev_ops *block_devs[256] = {

// no block devices yet

};

struct dev_ops *char_devs[256] = {

[MEM_MAJOR] = &mem_dev,

[TTY_CONSOLE_MAJOR] = &tty_dev,

[TTY_ALTERNATE_MAJOR] = &tty_dev,

[TTY_PSEUDO_MASTER_MAJOR] = &tty_dev,

[TTY_PSEUDO_SLAVE_MAJOR] = &tty_dev,

[DYN_DEV_MAJOR] = &dyn_dev_char,

};

int dev_open(int major, int minor, int type, struct fd *fd) {

struct dev_ops *dev = (type == DEV_BLOCK ? block_devs : char_devs)[major];

if (dev == NULL)

return _ENXIO;

fd->ops = &dev->fd;

if (!dev->open)

return 0;

return dev->open(major, minor, fd);

}