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      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