import cffi

ffi = cffi.FFI()

ffi.set_source(

    "mercurial.cffi._osutil",

    """

#include <sys/attr.h>

#include <sys/vnode.h>

#include <unistd.h>

#include <fcntl.h>

#include <time.h>

typedef struct val_attrs {

    uint32_t          length;

    attribute_set_t   returned;

    attrreference_t   name_info;

    fsobj_type_t      obj_type;

    struct timespec   mtime;

    uint32_t          accessmask;

    off_t             datalength;

} __attribute__((aligned(4), packed)) val_attrs_t;

""",

    include_dirs=['mercurial'],

)

ffi.cdef(

    '''

typedef uint32_t attrgroup_t;

typedef struct attrlist {

    uint16_t     bitmapcount; /* number of attr. bit sets in list */

    uint16_t   reserved;    /* (to maintain 4-byte alignment) */

    attrgroup_t commonattr;  /* common attribute group */

    attrgroup_t volattr;     /* volume attribute group */

    attrgroup_t dirattr;     /* directory attribute group */

    attrgroup_t fileattr;    /* file attribute group */

    attrgroup_t forkattr;    /* fork attribute group */

    ...;

};

typedef struct attribute_set {

    ...;

} attribute_set_t;

typedef struct attrreference {

    int attr_dataoffset;

    int attr_length;

    ...;

} attrreference_t;

typedef int ... off_t;

typedef struct val_attrs {

    uint32_t          length;

    attribute_set_t   returned;

    attrreference_t   name_info;

    uint32_t          obj_type;

    struct timespec   mtime;

    uint32_t          accessmask;

    off_t             datalength;

    ...;

} val_attrs_t;

/* the exact layout of the above struct will be figured out during build time */

typedef int ... time_t;

typedef struct timespec {

    time_t tv_sec;

    ...;

};

int getattrlist(const char* path, struct attrlist * attrList, void * attrBuf,

                size_t attrBufSize, unsigned int options);

int getattrlistbulk(int dirfd, struct attrlist * attrList, void * attrBuf,

                    size_t attrBufSize, uint64_t options);

#define ATTR_BIT_MAP_COUNT ...

#define ATTR_CMN_NAME ...

#define ATTR_CMN_OBJTYPE ...

#define ATTR_CMN_MODTIME ...

#define ATTR_CMN_ACCESSMASK ...

#define ATTR_CMN_ERROR ...

#define ATTR_CMN_RETURNED_ATTRS ...

#define ATTR_FILE_DATALENGTH ...

#define VREG ...

#define VDIR ...

#define VLNK ...

#define VBLK ...

#define VCHR ...

#define VFIFO ...

#define VSOCK ...

#define S_IFMT ...

int open(const char *path, int oflag, int perm);

int close(int);

#define O_RDONLY ...

'''

)

if __name__ == '__main__':

    ffi.compile()