resize/test_extent.c

   1 /*
   2  * test_extent.c --- tester for the extent abstraction
   3  *
   4  * Copyright (C) 1997, 1998 by Theodore Ts'o and
   5  *      PowerQuest, Inc.
   6  *
   7  * Copyright (C) 1999, 2000 by Theodore Ts'o
   8  *
   9  * %Begin-Header%
  10  * This file may be redistributed under the terms of the GNU Public
  11  * License.
  12  * %End-Header%
  13  */
  14
  15 #include "config.h"
  16 #include "resize2fs.h"
  17
  18 void do_test(FILE *in, FILE *out);
  19
  20 void do_test(FILE *in, FILE *out)
  21 {
  22         char            buf[128];
  23         char            *cp, *cmd, *arg1, *arg2;
  24         __u64           num1, num2;
  25         __u64           size;
  26         errcode_t       retval;
  27         ext2_extent     extent = 0;
  28         const char      *no_table = "# No extent table\n";
  29
  30         while (!feof(in)) {
  31                 if (!fgets(buf, sizeof(buf), in))
  32                         break;
  33                 /*
  34                  * Ignore comments
  35                  */
  36                 if (buf[0] =='#')
  37                         continue;
  38
  39                 /*
  40                  * Echo command
  41                  */
  42                 fputs(buf, out);
  43
  44                 cp = strchr(buf, '\n');
  45                 if (cp)
  46                         *cp = '\0';
  47
  48                 /*
  49                  * Parse command line; simple, at most two arguments
  50                  */
  51                 cmd = buf;
  52                 num1 = num2 = 0;
  53                 arg1 = arg2 = 0;
  54                 cp = strchr(buf, ' ');
  55                 if (cp) {
  56                         *cp++ = '\0';
  57                         arg1 = cp;
  58                         num1 = strtoul(arg1, 0, 0);
  59
  60                         cp = strchr(cp, ' ');
  61                 }
  62                 if (cp) {
  63                         *cp++ = '\0';
  64                         arg2 = cp;
  65                         num2 = strtoul(arg2, 0, 0);
  66                 }
  67
  68                 if (!strcmp(cmd, "create")) {
  69                         retval = ext2fs_create_extent_table(&extent, num1);
  70                         if (retval) {
  71                         handle_error:
  72                                 fprintf(out, "# Error: %s\n",
  73                                         error_message(retval));
  74                                 continue;
  75                         }
  76                         continue;
  77                 }
  78                 if (!extent) {
  79                         fputs(no_table, out);
  80                         continue;
  81                 }
  82                 if (!strcmp(cmd, "free")) {
  83                         ext2fs_free_extent_table(extent);
  84                         extent = 0;
  85                 } else if (!strcmp(cmd, "add")) {
  86                         retval = ext2fs_add_extent_entry(extent, num1, num2);
  87                         if (retval)
  88                                 goto handle_error;
  89                 } else if (!strcmp(cmd, "lookup")) {
  90                         num2 = ext2fs_extent_translate(extent, num1);
  91                         fprintf(out, "# Answer: %llu%s\n",
  92                                 (unsigned long long) num2,
  93                                 num2 ? "" : " (not found)");
  94                 } else if (!strcmp(cmd, "dump")) {
  95                         ext2fs_extent_dump(extent, out);
  96                 } else if (!strcmp(cmd, "iter_test")) {
  97                         retval = ext2fs_iterate_extent(extent, 0, 0, 0);
  98                         if (retval)
  99                                 goto handle_error;
 100                         while (1) {
 101                                 retval = ext2fs_iterate_extent(extent,
 102                                                &num1, &num2, &size);
 103                                 if (retval)
 104                                         goto handle_error;
 105                                 if (!size)
 106                                         break;
 107                                 fprintf(out, "# %llu -> %llu (%llu)\n",
 108                                         (unsigned long long) num1,
 109                                         (unsigned long long) num2,
 110                                         (unsigned long long) size);
 111                         }
 112                 } else
 113                         fputs("# Syntax error\n", out);
 114         }
 115         if (extent)
 116                 ext2fs_free_extent_table(extent);
 117 }
 118
 119 #ifdef __GNUC__
 120 #define ATTR(x) __attribute__(x)
 121 #else
 122 #define ATTR(x)
 123 #endif
 124
 125 int main(int argc ATTR((unused)), char **argv ATTR((unused)))
 126 {
 127         do_test(stdin, stdout);
 128         exit(0);
 129 }