sbin/hammer2/cmd_destroy.c

   1 /*
   2  * Copyright (c) 2017 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@dragonflybsd.org>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  23  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  24  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  27  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  28  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include "hammer2.h"
  33
  34 static int pathdir(const char *path, const char **lastp);
  35
  36 int
  37 cmd_destroy_path(int ac, const char **av)
  38 {
  39         hammer2_ioc_destroy_t destroy;
  40         const char *last;
  41         int i;
  42         int fd;
  43
  44         for (i = 0; i < ac; ++i) {
  45                 bzero(&destroy, sizeof(destroy));
  46                 destroy.cmd = HAMMER2_DELETE_FILE;
  47                 printf("%s\t", av[i]);
  48                 fflush(stdout);
  49                 fd = pathdir(av[i], &last);
  50                 if (fd >= 0) {
  51                         snprintf(destroy.path, sizeof(destroy.path),
  52                                  "%s", last);
  53                         if (ioctl(fd, HAMMER2IOC_DESTROY, &destroy) < 0) {
  54                                 printf("error: %s\n", strerror(errno));
  55                         } else {
  56                                 printf("ok\n");
  57                         }
  58                         close(fd);
  59                 } else {
  60                         printf("error: %s\n", strerror(errno));
  61                 }
  62         }
  63         return 0;
  64 }
  65
  66 static
  67 int
  68 pathdir(const char *path, const char **lastp)
  69 {
  70         const char *ptr;
  71         char *npath;
  72         int fd;
  73
  74         ptr = path + strlen(path);
  75         while (ptr > path && ptr[-1] != '/')
  76                 --ptr;
  77         *lastp = ptr;
  78         if (ptr == path) {
  79                 fd = open(".", O_RDONLY);
  80         } else {
  81                 asprintf(&npath, "%*.*s",
  82                         (int)(ptr - path), (int)(ptr - path), path);
  83                 fd = open(npath, O_RDONLY);
  84                 free(npath);
  85         }
  86
  87         return fd;
  88 }