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 } 124
