1USB_DESCRIPTOR_FILLB(9)     Kernel Mode Gadget API     USB_DESCRIPTOR_FILLB(9)
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NAME

6       usb_descriptor_fillbuf - fill buffer with descriptors
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SYNOPSIS

9       int usb_descriptor_fillbuf(void * buf, unsigned buflen,
10                                  const struct usb_descriptor_header ** src);
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ARGUMENTS

13       buf
14           Buffer to be filled
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16       buflen
17           Size of buf
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19       src
20           Array of descriptor pointers, terminated by null pointer.
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DESCRIPTION

23       Copies descriptors into the buffer, returning the length or a negative
24       error code if they can´t all be copied. Useful when assembling
25       descriptors for an associated set of interfaces used as part of
26       configuring a composite device; or in other cases where sets of
27       descriptors need to be marshaled.
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AUTHOR

30       David Brownell <dbrownell@users.sourceforge.net>
31           Author.
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34Kernel Hackers Manual 2.6.         June 2019           USB_DESCRIPTOR_FILLB(9)
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