sbin/hammer2/cmd_setcheck.c

   1 /*
   2  * Copyright (c) 2013 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  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "hammer2.h"
  36
  37 static int cmd_setcheck_core(uint8_t check_algo, const char *path_str,
  38                             struct stat *st);
  39
  40 int
  41 cmd_setcheck(const char *check_str, char **paths)
  42 {
  43         static const char *checks[] = HAMMER2_CHECK_STRINGS;
  44         struct stat st;
  45         int check_algo;
  46         int ecode;
  47         int res;
  48
  49         ecode = 0;
  50
  51         if (isdigit(check_str[0])) {
  52                 check_algo = strtol(check_str, NULL, 0);
  53         } else {
  54                 check_algo = HAMMER2_CHECK_STRINGS_COUNT;
  55                 while (--check_algo >= 0) {
  56                         if (strcasecmp(check_str, checks[check_algo]) == 0)
  57                                 break;
  58                 }
  59                 if (check_algo < 0 && strcasecmp(check_str, "default") == 0) {
  60                         check_algo = HAMMER2_CHECK_ISCSI32;
  61                         check_str = "crc32";
  62                 }
  63                 if (check_algo < 0 && strcasecmp(check_str, "disabled") == 0) {
  64                         check_algo = HAMMER2_CHECK_DISABLED;
  65                         check_str = "disabled";
  66                 }
  67                 if (check_algo < 0) {
  68                         fprintf(stderr,
  69                                 "Unknown check code type: %s\n",
  70                                 check_str);
  71                         ecode = 3;
  72                 }
  73         }
  74
  75         if (ecode == 0) {
  76                 while (*paths) {
  77                         if (lstat(*paths, &st) == 0) {
  78                                 res = cmd_setcheck_core(
  79                                         HAMMER2_ENC_ALGO(check_algo),
  80                                         *paths,
  81                                         &st);
  82                                 if (res)
  83                                         ecode = res;
  84                         } else {
  85                                 printf("%s: %s\n", *paths, strerror(errno));
  86                                 ecode = 3;
  87                         }
  88                         ++paths;
  89                 }
  90         }
  91
  92         return ecode;
  93 }
  94
  95 static int
  96 cmd_setcheck_core(uint8_t check_algo, const char *path_str, struct stat *st)
  97 {
  98         hammer2_ioc_inode_t inode;
  99         int fd;
 100         int res;
 101
 102         fd = hammer2_ioctl_handle(path_str);
 103         if (fd < 0) {
 104                 res = 3;
 105                 goto failed;
 106         }
 107         res = ioctl(fd, HAMMER2IOC_INODE_GET, &inode);
 108         if (res < 0) {
 109                 fprintf(stderr,
 110                         "%s: HAMMER2IOC_INODE_GET: error %s\n",
 111                         path_str, strerror(errno));
 112                 res = 3;
 113                 goto failed;
 114         }
 115         printf("%s\tcheck_algo=0x%02x\n", path_str, check_algo);
 116         inode.ip_data.check_algo = check_algo;
 117         res = ioctl(fd, HAMMER2IOC_INODE_SET, &inode);
 118         if (res < 0) {
 119                 fprintf(stderr,
 120                         "%s: HAMMER2IOC_INODE_SET: error %s\n",
 121                         path_str, strerror(errno));
 122                 res = 3;
 123                 goto failed;
 124         }
 125         res = 0;
 126
 127         if (RecurseOpt && S_ISDIR(st->st_mode)) {
 128                 DIR *dir;
 129                 char *path;
 130                 struct dirent *den;
 131
 132                 if ((dir = fdopendir(fd)) != NULL) {
 133                         while ((den = readdir(dir)) != NULL) {
 134                                 if (strcmp(den->d_name, ".") == 0 ||
 135                                     strcmp(den->d_name, "..") == 0) {
 136                                         continue;
 137                                 }
 138                                 asprintf(&path, "%s/%s", path_str, den->d_name);
 139                                 if (lstat(path, st) == 0)
 140                                         cmd_setcheck_core(check_algo, path, st);
 141                                 free(path);
 142                         }
 143                         closedir(dir);
 144                 }
 145         }
 146 failed:
 147         close(fd);
 148         return res;
 149 }