40 lines
845 B
C
40 lines
845 B
C
// See ../getdents/getdents.go for some info on why
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// this exists.
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/stat.h>
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#include <sys/syscall.h>
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#include <errno.h>
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int main(int argc, char *argv[])
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{
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if(argc < 2) {
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printf("Usage: %s PATH\n", argv[0]);
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printf("Run getdents(2) on PATH\n");
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exit(1);
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}
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const char *path = argv[1];
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int fd = open(path, O_RDONLY);
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if (fd == -1) {
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perror("open");
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exit(1);
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}
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char tmp[10000];
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int sum = 0;
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for ( ; ; ) {
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int n = syscall(SYS_getdents64, fd, tmp, sizeof(tmp));
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printf("getdents64 fd%d: n=%d, errno=%d\n", fd, n, errno);
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if (n <= 0) {
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printf("total %d bytes\n", sum);
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break;
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}
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sum += n;
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}
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}
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