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Add ioctl(SIOCGIFxxx) support (#197)

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- 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.
This commit is contained in:
fabriziobertocci 2021-06-24 13:53:27 -04:00 • committed by GitHub
parent 4d8f884e76
commit fd0eefce17
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GPG key ID: 4AEE18F83AFDEB23
105 changed files with 1531 additions and 4 deletions
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17
libc/calls/ioctl.h
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@ -2,6 +2,7 @@
#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_
@ -27,8 +28,18 @@ int ioctl(int, uint64_t, void *);
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 *);
@ -37,6 +48,12 @@ 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) {