| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2003 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| int |
| main(argc, argv) |
| int argc; |
| char **argv; |
| |
| { |
| char *filename="testfile"; |
| int c; |
| int fd, err; |
| |
| if(argc != 3) |
| { printf("Usage: cxfs_ftrunc -f filename\n"); |
| exit(1); |
| } |
| |
| while((c=getopt(argc,argv,"f:"))!=EOF) { |
| switch (c) { |
| case 'f': |
| filename = optarg; |
| break; |
| default: |
| fprintf(stderr,"Usage: ftrunc -f filename\n"); |
| exit(1); |
| } |
| } |
| |
| |
| |
| |
| /* open RDWR but with read-only perms */ |
| fd = open(filename, O_CREAT|O_RDWR, 0400); |
| if (fd < 0) { |
| perror("open failed"); |
| return 1; |
| } |
| |
| err = ftruncate(fd, 1000); |
| if (err < 0) { |
| perror("ftruncate failed"); |
| return 1; |
| } |
| |
| err = unlink(filename); |
| if (err < 0) { |
| perror("unlink failed"); |
| return 1; |
| } |
| |
| return 0; |
| |
| } |