733 lines
16 KiB
C
733 lines
16 KiB
C
/*
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* tst_bitmaps.c
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*
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* Copyright (C) 2011 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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* %End-Header%
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*/
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#include "config.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#include <string.h>
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#include <fcntl.h>
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#include <time.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "ss/ss.h"
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#include "ext2_fs.h"
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#include "ext2fs.h"
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#include "ext2fsP.h"
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extern ss_request_table tst_bitmaps_cmds;
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static char subsystem_name[] = "tst_bitmaps";
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static char version[] = "1.0";
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ext2_filsys test_fs;
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int exit_status = 0;
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static int source_file(const char *cmd_file, int sci_idx)
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{
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FILE *f;
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char buf[256];
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char *cp;
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int retval;
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int noecho;
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if (strcmp(cmd_file, "-") == 0)
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f = stdin;
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else {
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f = fopen(cmd_file, "r");
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if (!f) {
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perror(cmd_file);
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exit(1);
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}
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}
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fflush(stdout);
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fflush(stderr);
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setbuf(stdout, NULL);
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setbuf(stderr, NULL);
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while (!feof(f)) {
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if (fgets(buf, sizeof(buf), f) == NULL)
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break;
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if (buf[0] == '#')
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continue;
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noecho = 0;
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if (buf[0] == '-') {
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noecho = 1;
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buf[0] = ' ';
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}
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cp = strchr(buf, '\n');
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if (cp)
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*cp = 0;
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cp = strchr(buf, '\r');
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if (cp)
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*cp = 0;
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if (!noecho)
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printf("%s: %s\n", subsystem_name, buf);
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retval = ss_execute_line(sci_idx, buf);
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if (retval) {
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ss_perror(sci_idx, retval, buf);
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exit_status++;
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}
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}
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return exit_status;
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}
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/*
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* This function resets the libc getopt() function, which keeps
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* internal state. Bad design! Stupid libc API designers! No
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* biscuit!
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*
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* BSD-derived getopt() functions require that optind be reset to 1 in
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* order to reset getopt() state. This used to be generally accepted
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* way of resetting getopt(). However, glibc's getopt()
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* has additional getopt() state beyond optind, and requires that
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* optind be set zero to reset its state. So the unfortunate state of
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* affairs is that BSD-derived versions of getopt() misbehave if
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* optind is set to 0 in order to reset getopt(), and glibc's getopt()
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* will core dump if optind is set 1 in order to reset getopt().
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*
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* More modern versions of BSD require that optreset be set to 1 in
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* order to reset getopt(). Sigh. Standards, anyone?
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*
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* We hide the hair here.
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*/
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void reset_getopt(void)
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{
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#if defined(__GLIBC__) || defined(__linux__)
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optind = 0;
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#else
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optind = 1;
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#endif
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#ifdef HAVE_OPTRESET
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optreset = 1; /* Makes BSD getopt happy */
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#endif
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}
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/*
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* This function will convert a string to an unsigned long, printing
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* an error message if it fails, and returning success or failure in err.
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*/
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unsigned long parse_ulong(const char *str, const char *cmd,
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const char *descr, int *err)
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{
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char *tmp;
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unsigned long ret;
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ret = strtoul(str, &tmp, 0);
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if (*tmp == 0) {
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if (err)
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*err = 0;
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return ret;
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}
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com_err(cmd, 0, "Bad %s - %s", descr, str);
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if (err)
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*err = 1;
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else
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exit(1);
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return 0;
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}
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int check_fs_open(char *name)
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{
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if (!test_fs) {
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com_err(name, 0, "Filesystem not open");
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return 1;
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}
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return 0;
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}
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static void setup_filesystem(const char *name,
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unsigned int blocks, unsigned int inodes,
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unsigned int type, int flags)
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{
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struct ext2_super_block param;
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errcode_t retval;
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memset(¶m, 0, sizeof(param));
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ext2fs_blocks_count_set(¶m, blocks);
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param.s_inodes_count = inodes;
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retval = ext2fs_initialize("test fs", flags, ¶m,
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test_io_manager, &test_fs);
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if (retval) {
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com_err(name, retval, "while initializing filesystem");
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return;
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}
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test_fs->default_bitmap_type = type;
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ext2fs_free_block_bitmap(test_fs->block_map);
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test_fs->block_map = 0;
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ext2fs_free_inode_bitmap(test_fs->inode_map);
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test_fs->inode_map = 0;
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retval = ext2fs_allocate_block_bitmap(test_fs, "block bitmap",
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&test_fs->block_map);
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if (retval) {
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com_err(name, retval, "while allocating block bitmap");
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goto errout;
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}
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retval = ext2fs_allocate_inode_bitmap(test_fs, "inode bitmap",
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&test_fs->inode_map);
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if (retval) {
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com_err(name, retval, "while allocating inode bitmap");
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goto errout;
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}
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return;
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errout:
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ext2fs_close_free(&test_fs);
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}
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void setup_cmd(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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int c, err;
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unsigned int blocks = 128;
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unsigned int inodes = 0;
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unsigned int type = EXT2FS_BMAP64_BITARRAY;
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int flags = EXT2_FLAG_64BITS;
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if (test_fs)
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ext2fs_close_free(&test_fs);
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reset_getopt();
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while ((c = getopt(argc, argv, "b:i:lt:")) != EOF) {
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switch (c) {
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case 'b':
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blocks = parse_ulong(optarg, argv[0],
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"number of blocks", &err);
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if (err)
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return;
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break;
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case 'i':
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inodes = parse_ulong(optarg, argv[0],
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"number of blocks", &err);
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if (err)
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return;
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break;
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case 'l': /* Legacy bitmaps */
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flags = 0;
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break;
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case 't':
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type = parse_ulong(optarg, argv[0],
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"bitmap backend type", &err);
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if (err)
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return;
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break;
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default:
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fprintf(stderr, "%s: usage: setup [-b blocks] "
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"[-i inodes] [-t type]\n", argv[0]);
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return;
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}
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}
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setup_filesystem(argv[0], blocks, inodes, type, flags);
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}
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void close_cmd(int argc, char **argv, int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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if (check_fs_open(argv[0]))
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return;
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ext2fs_close_free(&test_fs);
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}
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void dump_bitmap(ext2fs_generic_bitmap bmap, unsigned int start, unsigned num)
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{
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unsigned char *buf;
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errcode_t retval;
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int i, len = (num - start + 7) / 8;
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buf = malloc(len);
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if (!buf) {
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com_err("dump_bitmap", 0, "couldn't allocate buffer");
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return;
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}
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memset(buf, 0, len);
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retval = ext2fs_get_generic_bmap_range(bmap, (__u64) start, num, buf);
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if (retval) {
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com_err("dump_bitmap", retval,
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"while calling ext2fs_generic_bmap_range");
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free(buf);
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return;
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}
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for (i=0; i < len; i++)
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printf("%02x", buf[i]);
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printf("\n");
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printf("bits set: %u\n", ext2fs_bitcount(buf, len));
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free(buf);
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}
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void dump_inode_bitmap_cmd(int argc, char **argv,
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int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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if (check_fs_open(argv[0]))
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return;
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printf("inode bitmap: ");
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dump_bitmap(test_fs->inode_map, 1, test_fs->super->s_inodes_count);
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}
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void dump_block_bitmap_cmd(int argc, char **argv,
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int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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if (check_fs_open(argv[0]))
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return;
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printf("block bitmap: ");
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dump_bitmap(test_fs->block_map, test_fs->super->s_first_data_block,
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test_fs->super->s_blocks_count);
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}
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void do_setb(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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unsigned int block, num;
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int err;
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int test_result, op_result;
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if (check_fs_open(argv[0]))
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return;
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if (argc != 2 && argc != 3) {
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com_err(argv[0], 0, "Usage: setb <block> [num]");
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return;
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}
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block = parse_ulong(argv[1], argv[0], "block", &err);
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if (err)
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return;
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if (argc == 3) {
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num = parse_ulong(argv[2], argv[0], "num", &err);
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if (err)
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return;
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ext2fs_mark_block_bitmap_range2(test_fs->block_map,
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block, num);
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printf("Marking blocks %u to %u\n", block, block + num - 1);
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return;
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}
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test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block);
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op_result = ext2fs_mark_block_bitmap2(test_fs->block_map, block);
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printf("Setting block %u, was %s before\n", block, op_result ?
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"set" : "clear");
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if (!test_result != !op_result)
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com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)",
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test_result, op_result);
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}
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void do_clearb(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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unsigned int block, num;
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int err;
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int test_result, op_result;
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if (check_fs_open(argv[0]))
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return;
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if (argc != 2 && argc != 3) {
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com_err(argv[0], 0, "Usage: clearb <block> [num]");
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return;
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}
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block = parse_ulong(argv[1], argv[0], "block", &err);
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if (err)
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return;
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if (argc == 3) {
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num = parse_ulong(argv[2], argv[0], "num", &err);
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if (err)
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return;
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ext2fs_unmark_block_bitmap_range2(test_fs->block_map,
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block, num);
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printf("Clearing blocks %u to %u\n", block, block + num - 1);
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return;
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}
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test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block);
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op_result = ext2fs_unmark_block_bitmap2(test_fs->block_map, block);
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printf("Clearing block %u, was %s before\n", block, op_result ?
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"set" : "clear");
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if (!test_result != !op_result)
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com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)",
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test_result, op_result);
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}
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void do_testb(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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unsigned int block, num;
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int err;
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int test_result;
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if (check_fs_open(argv[0]))
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return;
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if (argc != 2 && argc != 3) {
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com_err(argv[0], 0, "Usage: testb <block> [num]");
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return;
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}
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block = parse_ulong(argv[1], argv[0], "block", &err);
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if (err)
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return;
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|
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if (argc == 3) {
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num = parse_ulong(argv[2], argv[0], "num", &err);
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if (err)
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return;
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test_result =
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ext2fs_test_block_bitmap_range2(test_fs->block_map,
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block, num);
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printf("Blocks %u to %u are %sall clear.\n",
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block, block + num - 1, test_result ? "" : "NOT ");
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return;
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}
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test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block);
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printf("Block %u is %s\n", block, test_result ? "set" : "clear");
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}
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void do_ffzb(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
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void *infop EXT2FS_ATTR((unused)))
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{
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unsigned int start, end;
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int err;
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errcode_t retval;
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blk64_t out;
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|
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if (check_fs_open(argv[0]))
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return;
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|
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if (argc != 3 && argc != 3) {
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com_err(argv[0], 0, "Usage: ffzb <start> <end>");
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return;
|
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}
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start = parse_ulong(argv[1], argv[0], "start", &err);
|
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if (err)
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return;
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end = parse_ulong(argv[2], argv[0], "end", &err);
|
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if (err)
|
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return;
|
|
|
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retval = ext2fs_find_first_zero_block_bitmap2(test_fs->block_map,
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start, end, &out);
|
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if (retval) {
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printf("ext2fs_find_first_zero_block_bitmap2() returned %s\n",
|
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error_message(retval));
|
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return;
|
|
}
|
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printf("First unmarked block is %llu\n", (unsigned long long) out);
|
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}
|
|
|
|
void do_ffsb(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
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void *infop EXT2FS_ATTR((unused)))
|
|
{
|
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unsigned int start, end;
|
|
int err;
|
|
errcode_t retval;
|
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blk64_t out;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 3 && argc != 3) {
|
|
com_err(argv[0], 0, "Usage: ffsb <start> <end>");
|
|
return;
|
|
}
|
|
|
|
start = parse_ulong(argv[1], argv[0], "start", &err);
|
|
if (err)
|
|
return;
|
|
|
|
end = parse_ulong(argv[2], argv[0], "end", &err);
|
|
if (err)
|
|
return;
|
|
|
|
retval = ext2fs_find_first_set_block_bitmap2(test_fs->block_map,
|
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start, end, &out);
|
|
if (retval) {
|
|
printf("ext2fs_find_first_set_block_bitmap2() returned %s\n",
|
|
error_message(retval));
|
|
return;
|
|
}
|
|
printf("First marked block is %llu\n", (unsigned long long) out);
|
|
}
|
|
|
|
|
|
void do_zerob(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
printf("Clearing block bitmap.\n");
|
|
ext2fs_clear_block_bitmap(test_fs->block_map);
|
|
}
|
|
|
|
void do_seti(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int inode;
|
|
int err;
|
|
int test_result, op_result;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 2) {
|
|
com_err(argv[0], 0, "Usage: seti <inode>");
|
|
return;
|
|
}
|
|
|
|
inode = parse_ulong(argv[1], argv[0], "inode", &err);
|
|
if (err)
|
|
return;
|
|
|
|
test_result = ext2fs_test_inode_bitmap2(test_fs->inode_map, inode);
|
|
op_result = ext2fs_mark_inode_bitmap2(test_fs->inode_map, inode);
|
|
printf("Setting inode %u, was %s before\n", inode, op_result ?
|
|
"set" : "clear");
|
|
if (!test_result != !op_result) {
|
|
com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)",
|
|
test_result, op_result);
|
|
exit_status++;
|
|
}
|
|
}
|
|
|
|
void do_cleari(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int inode;
|
|
int err;
|
|
int test_result, op_result;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 2) {
|
|
com_err(argv[0], 0, "Usage: clearb <inode>");
|
|
return;
|
|
}
|
|
|
|
inode = parse_ulong(argv[1], argv[0], "inode", &err);
|
|
if (err)
|
|
return;
|
|
|
|
test_result = ext2fs_test_inode_bitmap2(test_fs->inode_map, inode);
|
|
op_result = ext2fs_unmark_inode_bitmap2(test_fs->inode_map, inode);
|
|
printf("Clearing inode %u, was %s before\n", inode, op_result ?
|
|
"set" : "clear");
|
|
if (!test_result != !op_result) {
|
|
com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)",
|
|
test_result, op_result);
|
|
exit_status++;
|
|
}
|
|
}
|
|
|
|
void do_testi(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int inode;
|
|
int err;
|
|
int test_result;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 2) {
|
|
com_err(argv[0], 0, "Usage: testb <inode>");
|
|
return;
|
|
}
|
|
|
|
inode = parse_ulong(argv[1], argv[0], "inode", &err);
|
|
if (err)
|
|
return;
|
|
|
|
test_result = ext2fs_test_inode_bitmap2(test_fs->inode_map, inode);
|
|
printf("Inode %u is %s\n", inode, test_result ? "set" : "clear");
|
|
}
|
|
|
|
void do_ffzi(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int start, end;
|
|
int err;
|
|
errcode_t retval;
|
|
ext2_ino_t out;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 3 && argc != 3) {
|
|
com_err(argv[0], 0, "Usage: ffzi <start> <end>");
|
|
return;
|
|
}
|
|
|
|
start = parse_ulong(argv[1], argv[0], "start", &err);
|
|
if (err)
|
|
return;
|
|
|
|
end = parse_ulong(argv[2], argv[0], "end", &err);
|
|
if (err)
|
|
return;
|
|
|
|
retval = ext2fs_find_first_zero_inode_bitmap2(test_fs->inode_map,
|
|
start, end, &out);
|
|
if (retval) {
|
|
printf("ext2fs_find_first_zero_inode_bitmap2() returned %s\n",
|
|
error_message(retval));
|
|
return;
|
|
}
|
|
printf("First unmarked inode is %u\n", out);
|
|
}
|
|
|
|
void do_ffsi(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
unsigned int start, end;
|
|
int err;
|
|
errcode_t retval;
|
|
ext2_ino_t out;
|
|
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
if (argc != 3 && argc != 3) {
|
|
com_err(argv[0], 0, "Usage: ffsi <start> <end>");
|
|
return;
|
|
}
|
|
|
|
start = parse_ulong(argv[1], argv[0], "start", &err);
|
|
if (err)
|
|
return;
|
|
|
|
end = parse_ulong(argv[2], argv[0], "end", &err);
|
|
if (err)
|
|
return;
|
|
|
|
retval = ext2fs_find_first_set_inode_bitmap2(test_fs->inode_map,
|
|
start, end, &out);
|
|
if (retval) {
|
|
printf("ext2fs_find_first_set_inode_bitmap2() returned %s\n",
|
|
error_message(retval));
|
|
return;
|
|
}
|
|
printf("First marked inode is %u\n", out);
|
|
}
|
|
|
|
void do_zeroi(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)),
|
|
void *infop EXT2FS_ATTR((unused)))
|
|
{
|
|
if (check_fs_open(argv[0]))
|
|
return;
|
|
|
|
printf("Clearing inode bitmap.\n");
|
|
ext2fs_clear_inode_bitmap(test_fs->inode_map);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
unsigned int blocks = 128;
|
|
unsigned int inodes = 0;
|
|
unsigned int type = EXT2FS_BMAP64_BITARRAY;
|
|
int c, err, code;
|
|
char *request = (char *)NULL;
|
|
char *cmd_file = 0;
|
|
int sci_idx;
|
|
int flags = EXT2_FLAG_64BITS;
|
|
|
|
add_error_table(&et_ss_error_table);
|
|
add_error_table(&et_ext2_error_table);
|
|
while ((c = getopt (argc, argv, "b:i:lt:R:f:")) != EOF) {
|
|
switch (c) {
|
|
case 'b':
|
|
blocks = parse_ulong(optarg, argv[0],
|
|
"number of blocks", &err);
|
|
if (err)
|
|
exit(1);
|
|
break;
|
|
case 'i':
|
|
inodes = parse_ulong(optarg, argv[0],
|
|
"number of blocks", &err);
|
|
if (err)
|
|
exit(1);
|
|
break;
|
|
case 'l': /* Legacy bitmaps */
|
|
flags = 0;
|
|
break;
|
|
case 't':
|
|
type = parse_ulong(optarg, argv[0],
|
|
"bitmap backend type", &err);
|
|
if (err)
|
|
exit(1);
|
|
break;
|
|
case 'R':
|
|
request = optarg;
|
|
break;
|
|
case 'f':
|
|
cmd_file = optarg;
|
|
break;
|
|
default:
|
|
com_err(argv[0], 0, "Usage: %s [-R request] "
|
|
"[-f cmd_file]", subsystem_name);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
sci_idx = ss_create_invocation(subsystem_name, version,
|
|
(char *)NULL, &tst_bitmaps_cmds, &code);
|
|
if (code) {
|
|
ss_perror(sci_idx, code, "creating invocation");
|
|
exit(1);
|
|
}
|
|
|
|
(void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &code);
|
|
if (code) {
|
|
ss_perror(sci_idx, code, "adding standard requests");
|
|
exit (1);
|
|
}
|
|
|
|
printf("%s %s. Type '?' for a list of commands.\n\n",
|
|
subsystem_name, version);
|
|
|
|
setup_filesystem(argv[0], blocks, inodes, type, flags);
|
|
|
|
if (request) {
|
|
code = ss_execute_line(sci_idx, request);
|
|
if (code) {
|
|
ss_perror(sci_idx, code, request);
|
|
exit_status++;
|
|
}
|
|
} else if (cmd_file) {
|
|
exit_status = source_file(cmd_file, sci_idx);
|
|
} else {
|
|
ss_listen(sci_idx);
|
|
}
|
|
|
|
exit(exit_status);
|
|
}
|
|
|