cosmopolitan/examples/forky.c

52 lines
2.3 KiB
C

#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "libc/calls/calls.h"
#include "libc/calls/hefty/spawn.h"
#include "libc/calls/internal.h"
#include "libc/conv/conv.h"
#include "libc/log/check.h"
#include "libc/mem/mem.h"
#include "libc/nt/enum/filemapflags.h"
#include "libc/nt/enum/pageflags.h"
#include "libc/nt/memory.h"
#include "libc/runtime/gc.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/x/x.h"
int main(int argc, char *argv[]) {
int pid;
long *addr;
int64_t fh;
if (argc == 1) {
fh = CreateFileMappingNuma(-1, &kNtIsInheritable, kNtPageReadwrite, 0,
FRAMESIZE, NULL, kNtNumaNoPreferredNode);
addr = MapViewOfFileExNuma(fh, kNtFileMapRead | kNtFileMapWrite, 0, 0,
FRAMESIZE, NULL, kNtNumaNoPreferredNode);
*addr = 0x31337;
CHECK_NE(-1, (pid = spawnve(
0, (int[3]){STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO},
"o/examples/forky.com",
(char *const[]){"o/examples/forky.com",
gc(xasprintf("%#lx", (intptr_t)addr)),
gc(xasprintf("%#lx", fh)), NULL},
environ)));
CHECK_NE(-1, waitpid(pid, NULL, 0));
} else {
addr = (long *)(intptr_t)strtoul(argv[1], NULL, 0);
fh = strtoul(argv[2], NULL, 0);
addr = MapViewOfFileExNuma(fh, kNtFileMapRead | kNtFileMapWrite, 0, 0,
FRAMESIZE, addr, kNtNumaNoPreferredNode);
printf("%#lx\n", *addr);
}
return 0;
}