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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/05/03 18:04:25 UTC

[GitHub] [incubator-nuttx] xiaoxiang781216 commented on issue #959: Issues with variadic ioctl()

xiaoxiang781216 commented on issue #959:
URL: https://github.com/apache/incubator-nuttx/issues/959#issuecomment-623154003


   But from https://pubs.opengroup.org/onlinepubs/009604599/functions/ioctl.html:
   The arg argument represents additional information that is needed by this specific STREAMS device to perform the requested function. The type of arg depends upon the particular control request, but it shall be either an integer or a pointer to a device-specific data structure.
   ioctl just accept one argument either an integer or pointer even it has variadic argument list. It is different from wdog which really accept the different number of arguments.


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