| #include <stdio.h> |
| #include <fcntl.h> |
| #include <err.h> |
| #include <sys/stat.h> |
| |
| int main(int argc, char *argv[]) |
| { |
| const char *path1; |
| const char *path2; |
| struct stat stbuf; |
| int res; |
| int fd; |
| |
| if (argc != 3) { |
| fprintf(stderr, "usage: %s path1 path2\n", argv[0]); |
| return 1; |
| } |
| |
| path1 = argv[1]; |
| path2 = argv[2]; |
| fd = open(path2, O_RDONLY); |
| if (fd == -1) |
| err(1, "open(\"%s\")", path2); |
| |
| res = rename(path1, path2); |
| if (res == -1) |
| err(1, "rename(\"%s\", \"%s\")", path1, path2); |
| |
| res = fstat(fd, &stbuf); |
| if (res == -1) |
| err(1, "fstat(%i)", fd); |
| |
| if (stbuf.st_nlink != 0) { |
| fprintf(stderr, "nlink is %lu, should be 0\n", |
| (unsigned long) stbuf.st_nlink); |
| return 1; |
| } |
| |
| return 0; |
| } |