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UnicronNLandClaude Opus 5.5
4f042f7225
Interpreter + JIT for ARM, Thumb-2, VFPv4 and NEON, ARM EABI syscall translation, signals, threads and self-modifying code. Runs static bionic programs on the Frame. Tests: A64 encoders vs llvm-mc, a differential instruction fuzzer and program tests against qemu-arm. Not shipped; the README lists the steps towards running 32-bit-only APKs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/* File system calls: open/read/write/lseek/stat/dirs/rename/pipes/dup, 64-bit offsets. */
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <time.h>
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#include <unistd.h>
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int main(void)
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{
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char dir[] = "/tmp/a32test.XXXXXX";
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if (!mkdtemp(dir)) return 1;
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char path[256];
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snprintf(path, sizeof path, "%s/f1", dir);
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int fd = open(path, O_CREAT | O_RDWR | O_TRUNC, 0640);
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const char *msg = "hello file\n";
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write(fd, msg, strlen(msg));
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struct iovec iov[2] = {{(void *)"ab", 2}, {(void *)"cdef", 4}};
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writev(fd, iov, 2);
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off_t end = lseek(fd, 0, SEEK_END);
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off64_t big = lseek64(fd, 5LL << 30, SEEK_SET);
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write(fd, "Z", 1);
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struct stat st;
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fstat(fd, &st);
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printf("end %ld big %lld size %lld mode %o blocks>0 %d\n", (long)end, (long long)big, (long long)st.st_size,
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st.st_mode & 0777, st.st_blocks > 0);
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char buf[64] = {0};
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pread(fd, buf, 17, 0);
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printf("pread [%s]\n", buf);
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close(fd);
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struct stat st2;
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stat(path, &st2);
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printf("stat ino match %d nlink %d\n", st.st_ino == st2.st_ino, (int)st2.st_nlink);
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char p2[256];
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snprintf(p2, sizeof p2, "%s/f2", dir);
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rename(path, p2);
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printf("access old %d new %d\n", access(path, F_OK), access(p2, R_OK));
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snprintf(path, sizeof path, "%s/sub", dir);
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mkdir(path, 0755);
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symlink("f2", strcat(strcpy(buf, dir), "/link"));
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char lbuf[64] = {0};
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readlink(buf, lbuf, sizeof lbuf);
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printf("readlink %s\n", lbuf);
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DIR *d = opendir(dir);
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int n = 0;
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struct dirent *e;
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while ((e = readdir(d))) n += e->d_name[0] != '.';
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closedir(d);
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printf("entries %d\n", n);
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int p[2];
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pipe(p);
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write(p[1], "pipe!", 5);
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int dupfd = dup(p[0]);
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memset(buf, 0, sizeof buf);
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read(dupfd, buf, 5);
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printf("pipe [%s] cloexec %d\n", buf, fcntl(p[0], F_GETFD));
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unlink(buf);
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unlink(p2);
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rmdir(path);
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unlink(strcat(strcpy(buf, dir), "/link"));
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printf("rmdir %d\n", rmdir(dir));
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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printf("clock ok %d\n", ts.tv_sec >= 0);
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char cwd[256];
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printf("getcwd ok %d\n", getcwd(cwd, sizeof cwd) != NULL);
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printf("exe ok %d\n", readlink("/proc/self/exe", lbuf, sizeof lbuf) > 0);
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return 0;
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}
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