cosmopolitan/libc/calls/ioctl.h
fabriziobertocci fd0eefce17
Add ioctl(SIOCGIFxxx) support (#197)
- SIOCGIFCONFIG: reads and enumerate all the network interfaces
- SIOCGIFADDR: reads network address for a given interface
- SIOCGIFFLAGS: reads network flags for a given interface
- SIOCGIFNETMASK: reads network netmask for a given interface
- SIOCGIFBRDADDR: reads network broadcast address for a given interface
- SIOCGIFDSTADDR: reads peer destination address for a given
  interface (not supported for Windows)

This change defines Linux ABI structs for the above interfaces and adds
polyfills to ensure they behave consistently on XNU and Windows.
2021-06-24 10:53:27 -07:00

67 lines
3.6 KiB
C

#ifndef COSMOPOLITAN_LIBC_CALLS_IOCTL_H_
#define COSMOPOLITAN_LIBC_CALLS_IOCTL_H_
#include "libc/macros.internal.h"
#include "libc/sysv/consts/termios.h"
#include "libc/sysv/consts/sio.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § system calls » ioctl ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
int ioctl(int, uint64_t, void *);
/*───────────────────────────────────────────────────────────────────────────│─╗
│ cosmopolitan § system calls » ioctl » undiamonding (size optimization) ─╬─│┼
╚────────────────────────────────────────────────────────────────────────────│*/
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
#define ioctl(FD, REQUEST, MEMORY) ioctl_dispatch(FD, REQUEST, MEMORY)
#define __EQUIVALENT(X, Y) (__builtin_constant_p((X) == (Y)) && ((X) == (Y)))
#define __IOCTL_DISPATCH(CMP, FD, REQUEST, MEMORY) \
do { \
if (CMP(request, TIOCGWINSZ)) return ioctl_tiocgwinsz(FD, MEMORY); \
if (CMP(request, TIOCSWINSZ)) return ioctl_tiocswinsz(FD, MEMORY); \
if (CMP(request, TCGETS)) return ioctl_tcgets(FD, MEMORY); \
if (CMP(request, TCSETS)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
if (CMP(request, TCSETSW)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
if (CMP(request, TCSETSF)) return ioctl_tcsets(FD, REQUEST, MEMORY); \
if (CMP(request, SIOCGIFCONF)) return ioctl_siocgifconf(FD, MEMORY); \
if (CMP(request, SIOCGIFADDR)) return ioctl_siocgifaddr(FD, MEMORY); \
if (CMP(request, SIOCGIFNETMASK)) return ioctl_siocgifnetmask(FD, MEMORY); \
if (CMP(request, SIOCGIFBRDADDR)) return ioctl_siocgifbrdaddr(FD, MEMORY); \
if (CMP(request, SIOCGIFDSTADDR)) return ioctl_siocgifdstaddr(FD, MEMORY); \
if (CMP(request, SIOCGIFFLAGS)) return ioctl_siocgifflags(FD, MEMORY); \
} while (0)
/*
if (CMP(request, SIOCGIFFLAGS)) return ioctl_siocgifflags(FD, REQUEST, MEMORY); \
*/
int ioctl_tcgets(int, void *);
int ioctl_tcgets_nt(int, void *);
int ioctl_tcsets(int, uint64_t, void *);
int ioctl_tcsets_nt(int, uint64_t, void *);
int ioctl_tiocgwinsz(int, void *);
int ioctl_tiocgwinsz_nt(int, void *);
int ioctl_tiocswinsz(int, void *);
int ioctl_tiocswinsz_nt(int, void *);
int ioctl_siocgifconf(int, void *);
int ioctl_siocgifaddr(int, void *);
int ioctl_siocgifdstaddr(int, void *);
int ioctl_siocgifnetmask(int, void *);
int ioctl_siocgifbrdaddr(int, void *);
int ioctl_siocgifflags(int, void *);
int ioctl_default(int, uint64_t, void *);
forceinline int ioctl_dispatch(int fd, uint64_t request, void *memory) {
__IOCTL_DISPATCH(__EQUIVALENT, fd, request, memory);
return ioctl_default(fd, request, memory);
}
#endif /* GNUC && !ANSI */
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_CALLS_IOCTL_H_ */