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  • uspace/lib/c/include/io/chardev.h

    r5d50c419 rb7fd2a0  
    4141} chardev_t;
    4242
    43 extern int chardev_open(async_sess_t *, chardev_t **);
     43extern errno_t chardev_open(async_sess_t *, chardev_t **);
    4444extern void chardev_close(chardev_t *);
    45 extern int chardev_read(chardev_t *, void *, size_t, size_t *);
    46 extern int chardev_write(chardev_t *, const void *, size_t, size_t *);
     45extern errno_t chardev_read(chardev_t *, void *, size_t, size_t *);
     46extern errno_t chardev_write(chardev_t *, const void *, size_t, size_t *);
    4747
    4848#endif
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