Flags used when opening file.
append = O_APPENDasync = O_ASYNCclose_on_exec = UNISTDX_O_CLOEXECcreate = O_CREATdirect = UNISTDX_O_DIRECTdirectory = UNISTDX_O_DIRECTORYdsync = O_DSYNCexclude = O_EXCLlarge_file = UNISTDX_O_LARGEFILEno_atime = UNISTDX_O_NOATIMEno_ctty = O_NOCTTYno_follow = UNISTDX_O_NOFOLLOWnon_blocking = O_NONBLOCKpath = UNISTDX_O_PATHread_only = O_RDONLYread_write = O_RDWRrsync = UNISTDX_O_RSYNCsync = O_SYNCtmp_file = UNISTDX_O_TMPFILEtruncate = O_TRUNCwrite_only = O_WRONLYsupports(open_flag rhs) -> constexpr bool
Check if flag rhs is supported by operating system.