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30 lines
770 B
C
30 lines
770 B
C
#include "kernel/errno.h"
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#include "fs/fd.h"
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#include "fs/dev.h"
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#include "fs/mem.h"
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#include "fs/tty.h"
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#include "fs/dyndev.h"
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#include "fs/devices.h"
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struct dev_ops *block_devs[256] = {
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// no block devices yet
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};
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struct dev_ops *char_devs[256] = {
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[MEM_MAJOR] = &mem_dev,
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[TTY_CONSOLE_MAJOR] = &tty_dev,
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[TTY_ALTERNATE_MAJOR] = &tty_dev,
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[TTY_PSEUDO_MASTER_MAJOR] = &tty_dev,
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[TTY_PSEUDO_SLAVE_MAJOR] = &tty_dev,
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[DYN_DEV_MAJOR] = &dyn_dev_char,
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};
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int dev_open(int major, int minor, int type, struct fd *fd) {
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struct dev_ops *dev = (type == DEV_BLOCK ? block_devs : char_devs)[major];
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if (dev == NULL)
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return _ENXIO;
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fd->ops = &dev->fd;
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if (!dev->open)
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return 0;
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return dev->open(major, minor, fd);
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}
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