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Man Pages
sysdecode_ioctlname(3) FreeBSD Library Functions Manual sysdecode_ioctlname(3)

sysdecode_ioctlname
lookup name of device control command

System Argument Decoding Library (libsysdecode, -lsysdecode)

#include <sys/types.h>
#include <stdbool.h>
#include <sysdecode.h>

const char *
sysdecode_ioctlname(unsigned long request);

The sysdecode_ioctlname() function returns the name of a device control request identified by request. A table of names is generated during the build of the sysdecode library from system headers that maps device control request values to the name of the corresponding C macro.

The sysdecode_ioctlname() function returns the name of a device control request if request is a known value; otherwise NULL.

sysdecode(3)
October 17, 2016 FreeBSD 13.1-RELEASE

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