Copyright (c) 2016 John Baldwin <jhb@FreeBSD.org>

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.Dd November 24, 2017 .Dt sysdecode_fcntl_arg 3 .Os .Sh NAME .Nm sysdecode_fcntl_arg , .Nm sysdecode_fcntl_arg_p .Nd output description of fcntl argument .Sh LIBRARY .Lb libsysdecode .Sh SYNOPSIS n sys/types.h n stdbool.h n stdio.h n sysdecode.h .Ft void .Fn sysdecode_fcntl_arg "FILE *fp" "int cmd" "uintptr_t arg" "int base" .Ft bool .Fn sysdecode_fcntl_arg_p "int cmd" .Sh DESCRIPTION The .Fn sysdecode_fcntl_arg function outputs a text description of the optional .Fa arg argument to .Xr fcntl 2 to the stream .Fa fp . The type and format of .Fa arg are determined by .Fa cmd : l -column ".Dv F_SETLKW" "Vt struct flock *" t Sy Command Ta Fa arg Sy Type Ta Sy Output Format t t Dv F_SETFD Ta Vt int Ta .Dq FD_CLOEXEC or the value of .Fa arg in the indicated .Fa base

q one of 8, 10, or 16 . t t Dv F_SETFL Ta Vt int Ta File flags as output by .Xr sysdecode_fcntl_fileflags 3 with any unknown or remaining bits output in hexadecimal. t t Dv F_GETLK Ta Vt struct flock * Ta t Dv F_SETLK Ta Vt struct flock * Ta t Dv F_SETLKW Ta Vt struct flock * Ta The value of .Fa arg using the .Dq %p conversion specification. t t Others Ta Vt int Ta The value of .Fa arg in the indicated .Fa base

q one of 8, 10, or 16 . .El

p The .Fn sysdecode_fcntl_arg_p function can be used to determine if a .Xr fcntl 2 command uses the optional third argument to .Xr fcntl 2 . The function returns .Dv true if .Fa cmd accepts a third argument to .Xr fcntl 2 and .Dv false if it does not. .Sh RETURN VALUES The .Nm sysdecode_fcntl_arg_p function returns .Dv true if .Fa cmd accepts a third argument to .Xr fcntl 2 and .Dv false if it does not. .Sh SEE ALSO .Xr sysdecode 3 , .Xr sysdecode_fcntl_cmd 3 , .Xr sysdecode_fcntl_fileflags 3