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 Theosore 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 "resize2fs.h"
  16
  17 void do_test(FILE *in, FILE *out);
  18
  19 void do_test(FILE *in, FILE *out)
  20 {
  21         char            buf[128];
  22         char            *cp, *cmd, *arg1, *arg2;
  23         __u32           num1, num2;
  24         int             size;
  25         errcode_t       retval;
  26         ext2_extent     extent = 0;
  27         const char      *no_table = "# No extent table\n";
  28
  29         while (!feof(in)) {
  30                 if (!fgets(buf, sizeof(buf), in))
  31                         break;
  32                 /*
  33                  * Ignore comments
  34                  */
  35                 if (buf[0] =='#')
  36                         continue;
  37
  38                 /*
  39                  * Echo command
  40                  */
  41                 fputs(buf, out);
  42
  43                 cp = strchr(buf, '\n');
  44                 if (cp)
  45                         *cp = '\0';
  46
  47                 /*
  48                  * Parse command line; simple, at most two arguments
  49                  */
  50                 cmd = buf;
  51                 num1 = num2 = 0;
  52                 arg1 = arg2 = 0;
  53                 cp = strchr(buf, ' ');
  54                 if (cp) {
  55                         *cp++ = '\0';
  56                         arg1 = cp;
  57                         num1 = strtoul(arg1, 0, 0);
  58
  59                         cp = strchr(cp, ' ');
  60                 }
  61                 if (cp) {
  62                         *cp++ = '\0';
  63                         arg2 = cp;
  64                         num2 = strtoul(arg2, 0, 0);
  65                 }
  66
  67                 if (!strcmp(cmd, "create")) {
  68                         retval = ext2fs_create_extent_table(&extent, num1);
  69                         if (retval) {
  70                         handle_error:
  71                                 fprintf(out, "# Error: %s\n",
  72                                         error_message(retval));
  73                                 continue;
  74                         }
  75                         continue;
  76                 }
  77                 if (!extent) {
  78                         fputs(no_table, out);
  79                         continue;
  80                 }
  81                 if (!strcmp(cmd, "free")) {
  82                         ext2fs_free_extent_table(extent);
  83                         extent = 0;
  84                 } else if (!strcmp(cmd, "add")) {
  85                         retval = ext2fs_add_extent_entry(extent, num1, num2);
  86                         if (retval)
  87                                 goto handle_error;
  88                 } else if (!strcmp(cmd, "lookup")) {
  89                         num2 = ext2fs_extent_translate(extent, num1);
  90                         fprintf(out, "# Answer: %u%s\n", num2,
  91                                 num2 ? "" : " (not found)");
  92                 } else if (!strcmp(cmd, "dump")) {
  93                         ext2fs_extent_dump(extent, out);
  94                 } else if (!strcmp(cmd, "iter_test")) {
  95                         retval = ext2fs_iterate_extent(extent, 0, 0, 0);
  96                         if (retval)
  97                                 goto handle_error;
  98                         while (1) {
  99                                 retval = ext2fs_iterate_extent(extent,
 100                                                &num1, &num2, &size);
 101                                 if (retval)
 102                                         goto handle_error;
 103                                 if (!size)
 104                                         break;
 105                                 fprintf(out, "# %u -> %u (%d)\n",
 106                                         num1, num2, size);
 107                         }
 108                 } else
 109                         fputs("# Syntax error\n", out);
 110         }
 111 }
 112
 113 #ifdef __GNUC__
 114 #define ATTR(x) __attribute__(x)
 115 #else
 116 #define ATTR(x)
 117 #endif
 118
 119 int main(int argc ATTR((unused)), char **argv ATTR((unused)))
 120 {
 121         do_test(stdin, stdout);
 122         exit(0);
 123 }