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"""

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    Libc stuff

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"""

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cdef extern from "stdint.h" :

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    # yes, these are "wrong"

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    ctypedef unsigned char uint8_t

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    ctypedef unsigned short uint16_t

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    ctypedef unsigned int uint32_t

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    ctypedef signed char int8_t

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    ctypedef signed short int16_t

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    ctypedef signed int int32_t

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cdef extern from "sys/types.h" :

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    # potentially wrong...

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    ctypedef signed long ssize_t

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# <linux/types.h>

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cdef extern from "linux/types.h" :

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    ctypedef uint8_t __u8

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    ctypedef uint16_t __u16

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    ctypedef uint32_t __u32

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    ctypedef int8_t __s8

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    ctypedef int16_t __s16

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    ctypedef int32_t __s32

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cdef extern from "errno.h" :

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    int errno

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cdef extern from "string.h" :

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    void* memcpy (void *dest, void *src, size_t n)

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    void* memset (void *s, int c, size_t n)

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    char* strerror (int errno)

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cdef extern from "unistd.h" :

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    ssize_t read (int fd, void *buf, size_t count)

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    ssize_t write (int fd, void *buf, size_t count)

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    int close (int fd)

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cdef extern from "alloca.h" :

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    void* alloca (size_t size)

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cdef extern from "sys/uio.h" :

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    struct iovec :

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        void *iov_base

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        size_t iov_len

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    ssize_t readv (int fd, iovec *iov, int iovcnt)

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    ssize_t writev (int fd, iovec *iov, int iovcnt)

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## general errno-based errors

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#cdef class Errno (py.OSError) :

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#    """

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#        Some libc function returned an error code:

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#

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#            func        - the name of the function called

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#            err         - the system error code

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#            strerror    - human-readable error code -> message

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#    """

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#

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#    cdef readonly char *func

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#    cdef readonly int err

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#    cdef readonly object strerror

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#

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#cdef class GAIError (py.OSError) :

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#    """

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#        Some libc GAI function returnd an error code:

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#

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#            func        - the name of the function called

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#            err         - the GAI_* error code

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#            strerror    - human-readable error code -> message

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#    """

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#

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#    cdef readonly char *func

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#    cdef readonly int err

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#    cdef readonly object strerror

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#