| /* |
| * tst_bitmaps.c |
| * |
| * Copyright (C) 2011 Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Library |
| * General Public License, version 2. |
| * %End-Header% |
| */ |
| |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #ifdef HAVE_GETOPT_H |
| #include <getopt.h> |
| #endif |
| #include <string.h> |
| #include <fcntl.h> |
| #include <time.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include "ss/ss.h" |
| |
| #include "ext2_fs.h" |
| #include "ext2fs.h" |
| #include "ext2fsP.h" |
| |
| extern ss_request_table tst_bitmaps_cmds; |
| |
| static char subsystem_name[] = "tst_bitmaps"; |
| static char version[] = "1.0"; |
| |
| ext2_filsys test_fs; |
| int exit_status = 0; |
| |
| static int source_file(const char *cmd_file, int sci_idx) |
| { |
| FILE *f; |
| char buf[256]; |
| char *cp; |
| int retval; |
| int noecho; |
| |
| if (strcmp(cmd_file, "-") == 0) |
| f = stdin; |
| else { |
| f = fopen(cmd_file, "r"); |
| if (!f) { |
| perror(cmd_file); |
| exit(1); |
| } |
| } |
| fflush(stdout); |
| fflush(stderr); |
| setbuf(stdout, NULL); |
| setbuf(stderr, NULL); |
| while (!feof(f)) { |
| if (fgets(buf, sizeof(buf), f) == NULL) |
| break; |
| if (buf[0] == '#') |
| continue; |
| noecho = 0; |
| if (buf[0] == '-') { |
| noecho = 1; |
| buf[0] = ' '; |
| } |
| cp = strchr(buf, '\n'); |
| if (cp) |
| *cp = 0; |
| cp = strchr(buf, '\r'); |
| if (cp) |
| *cp = 0; |
| if (!noecho) |
| printf("%s: %s\n", subsystem_name, buf); |
| retval = ss_execute_line(sci_idx, buf); |
| if (retval) { |
| ss_perror(sci_idx, retval, buf); |
| exit_status++; |
| } |
| } |
| return exit_status; |
| } |
| |
| |
| /* |
| * This function resets the libc getopt() function, which keeps |
| * internal state. Bad design! Stupid libc API designers! No |
| * biscuit! |
| * |
| * BSD-derived getopt() functions require that optind be reset to 1 in |
| * order to reset getopt() state. This used to be generally accepted |
| * way of resetting getopt(). However, glibc's getopt() |
| * has additional getopt() state beyond optind, and requires that |
| * optind be set zero to reset its state. So the unfortunate state of |
| * affairs is that BSD-derived versions of getopt() misbehave if |
| * optind is set to 0 in order to reset getopt(), and glibc's getopt() |
| * will core dump if optind is set 1 in order to reset getopt(). |
| * |
| * More modern versions of BSD require that optreset be set to 1 in |
| * order to reset getopt(). Sigh. Standards, anyone? |
| * |
| * We hide the hair here. |
| */ |
| void reset_getopt(void) |
| { |
| #if defined(__GLIBC__) || defined(__linux__) |
| optind = 0; |
| #else |
| optind = 1; |
| #endif |
| #ifdef HAVE_OPTRESET |
| optreset = 1; /* Makes BSD getopt happy */ |
| #endif |
| } |
| |
| /* |
| * This function will convert a string to an unsigned long, printing |
| * an error message if it fails, and returning success or failure in err. |
| */ |
| unsigned long parse_ulong(const char *str, const char *cmd, |
| const char *descr, int *err) |
| { |
| char *tmp; |
| unsigned long ret; |
| |
| ret = strtoul(str, &tmp, 0); |
| if (*tmp == 0) { |
| if (err) |
| *err = 0; |
| return ret; |
| } |
| com_err(cmd, 0, "Bad %s - %s", descr, str); |
| if (err) |
| *err = 1; |
| else |
| exit(1); |
| return 0; |
| } |
| |
| |
| int check_fs_open(char *name) |
| { |
| if (!test_fs) { |
| com_err(name, 0, "Filesystem not open"); |
| return 1; |
| } |
| return 0; |
| } |
| |
| static void setup_filesystem(const char *name, |
| unsigned int blocks, unsigned int inodes, |
| unsigned int type, int flags) |
| { |
| struct ext2_super_block param; |
| errcode_t retval; |
| |
| memset(¶m, 0, sizeof(param)); |
| ext2fs_blocks_count_set(¶m, blocks); |
| param.s_inodes_count = inodes; |
| |
| retval = ext2fs_initialize("test fs", flags, ¶m, |
| test_io_manager, &test_fs); |
| |
| if (retval) { |
| com_err(name, retval, "while initializing filesystem"); |
| return; |
| } |
| test_fs->default_bitmap_type = type; |
| ext2fs_free_block_bitmap(test_fs->block_map); |
| test_fs->block_map = 0; |
| ext2fs_free_inode_bitmap(test_fs->inode_map); |
| test_fs->inode_map = 0; |
| retval = ext2fs_allocate_block_bitmap(test_fs, "block bitmap", |
| &test_fs->block_map); |
| if (retval) { |
| com_err(name, retval, "while allocating block bitmap"); |
| goto errout; |
| } |
| retval = ext2fs_allocate_inode_bitmap(test_fs, "inode bitmap", |
| &test_fs->inode_map); |
| if (retval) { |
| com_err(name, retval, "while allocating inode bitmap"); |
| goto errout; |
| } |
| return; |
| |
| errout: |
| ext2fs_close(test_fs); |
| test_fs = 0; |
| } |
| |
| void setup_cmd(int argc, char **argv) |
| { |
| int c, err; |
| unsigned int blocks = 128; |
| unsigned int inodes = 0; |
| unsigned int type = EXT2FS_BMAP64_BITARRAY; |
| int flags = EXT2_FLAG_64BITS; |
| |
| if (test_fs) { |
| ext2fs_close(test_fs); |
| test_fs = 0; |
| } |
| |
| reset_getopt(); |
| while ((c = getopt(argc, argv, "b:i:lt:")) != EOF) { |
| switch (c) { |
| case 'b': |
| blocks = parse_ulong(optarg, argv[0], |
| "number of blocks", &err); |
| if (err) |
| return; |
| break; |
| case 'i': |
| inodes = parse_ulong(optarg, argv[0], |
| "number of blocks", &err); |
| if (err) |
| return; |
| break; |
| case 'l': /* Legacy bitmaps */ |
| flags = 0; |
| break; |
| case 't': |
| type = parse_ulong(optarg, argv[0], |
| "bitmap backend type", &err); |
| if (err) |
| return; |
| break; |
| default: |
| fprintf(stderr, "%s: usage: setup [-b blocks] " |
| "[-i inodes] [-t type]\n", argv[0]); |
| return; |
| } |
| } |
| setup_filesystem(argv[0], blocks, inodes, type, flags); |
| } |
| |
| void close_cmd(int argc, char **argv) |
| { |
| if (check_fs_open(argv[0])) |
| return; |
| |
| ext2fs_close(test_fs); |
| test_fs = 0; |
| } |
| |
| |
| void dump_bitmap(ext2fs_generic_bitmap bmap, unsigned int start, unsigned num) |
| { |
| unsigned char *buf; |
| errcode_t retval; |
| int i, len = (num - start + 7) / 8; |
| |
| buf = malloc(len); |
| if (!buf) { |
| com_err("dump_bitmap", 0, "couldn't allocate buffer"); |
| return; |
| } |
| memset(buf, 0, len); |
| retval = ext2fs_get_generic_bmap_range(bmap, (__u64) start, num, buf); |
| if (retval) { |
| com_err("dump_bitmap", retval, |
| "while calling ext2fs_generic_bmap_range"); |
| free(buf); |
| return; |
| } |
| for (i=0; i < len; i++) |
| printf("%02x", buf[i]); |
| printf("\n"); |
| printf("bits set: %u\n", ext2fs_bitcount(buf, len)); |
| free(buf); |
| } |
| |
| void dump_inode_bitmap_cmd(int argc, char **argv) |
| { |
| if (check_fs_open(argv[0])) |
| return; |
| |
| printf("inode bitmap: "); |
| dump_bitmap(test_fs->inode_map, 1, test_fs->super->s_inodes_count); |
| } |
| |
| void dump_block_bitmap_cmd(int argc, char **argv) |
| { |
| if (check_fs_open(argv[0])) |
| return; |
| |
| printf("block bitmap: "); |
| dump_bitmap(test_fs->block_map, test_fs->super->s_first_data_block, |
| test_fs->super->s_blocks_count); |
| } |
| |
| void do_setb(int argc, char *argv[]) |
| { |
| unsigned int block, num; |
| int err; |
| int test_result, op_result; |
| |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc != 2 && argc != 3) { |
| com_err(argv[0], 0, "Usage: setb <block> [num]"); |
| return; |
| } |
| |
| block = parse_ulong(argv[1], argv[0], "block", &err); |
| if (err) |
| return; |
| |
| if (argc == 3) { |
| num = parse_ulong(argv[2], argv[0], "num", &err); |
| if (err) |
| return; |
| |
| ext2fs_mark_block_bitmap_range2(test_fs->block_map, |
| block, num); |
| printf("Marking blocks %u to %u\n", block, block + num - 1); |
| return; |
| } |
| |
| test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block); |
| op_result = ext2fs_mark_block_bitmap2(test_fs->block_map, block); |
| printf("Setting block %u, was %s before\n", block, op_result ? |
| "set" : "clear"); |
| if (!test_result != !op_result) |
| com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)", |
| test_result, op_result); |
| } |
| |
| void do_clearb(int argc, char *argv[]) |
| { |
| unsigned int block, num; |
| int err; |
| int test_result, op_result; |
| |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc != 2 && argc != 3) { |
| com_err(argv[0], 0, "Usage: clearb <block> [num]"); |
| return; |
| } |
| |
| block = parse_ulong(argv[1], argv[0], "block", &err); |
| if (err) |
| return; |
| |
| if (argc == 3) { |
| num = parse_ulong(argv[2], argv[0], "num", &err); |
| if (err) |
| return; |
| |
| ext2fs_unmark_block_bitmap_range2(test_fs->block_map, |
| block, num); |
| printf("Clearing blocks %u to %u\n", block, block + num - 1); |
| return; |
| } |
| |
| test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block); |
| op_result = ext2fs_unmark_block_bitmap2(test_fs->block_map, block); |
| printf("Clearing block %u, was %s before\n", block, op_result ? |
| "set" : "clear"); |
| if (!test_result != !op_result) |
| com_err(argv[0], 0, "*ERROR* test_result different! (%d, %d)", |
| test_result, op_result); |
| } |
| |
| void do_testb(int argc, char *argv[]) |
| { |
| unsigned int block, num; |
| int err; |
| int test_result; |
| |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc != 2 && argc != 3) { |
| com_err(argv[0], 0, "Usage: testb <block> [num]"); |
| return; |
| } |
| |
| block = parse_ulong(argv[1], argv[0], "block", &err); |
| if (err) |
| return; |
| |
| if (argc == 3) { |
| num = parse_ulong(argv[2], argv[0], "num", &err); |
| if (err) |
| return; |
| |
| test_result = |
| ext2fs_test_block_bitmap_range2(test_fs->block_map, |
| block, num); |
| printf("Blocks %u to %u are %sall clear.\n", |
| block, block + num - 1, test_result ? "" : "NOT "); |
| return; |
| } |
| |
| test_result = ext2fs_test_block_bitmap2(test_fs->block_map, block); |
| printf("Block %u is %s\n", block, test_result ? "set" : "clear"); |
| } |
| |
| void do_ffzb(int argc, char *argv[]) |
| { |
| unsigned int start, end; |
| int err; |
| errcode_t retval; |
| blk64_t out; |
| |
| if (check_fs_open(argv[0])) |
| return; |
| |
| if (argc != 3 && argc != 3) { |
| com_err(argv[0], 0, "Usage: ffzb <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_block_bitmap2(test_fs->block_map, |
| start, end, &out); |
| if (retval) { |
| printf("ext2fs_find_first_zero_block_bitmap2() returned %s\n", |
| error_message(retval)); |
| return; |
| } |
| printf("First unmarked block is %llu\n", out); |
| } |
| |
| |
| void do_zerob(int argc, char *argv[]) |
| { |
| 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[]) |
| { |
| 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[]) |
| { |
| 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[]) |
| { |
| 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[]) |
| { |
| 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_zeroi(int argc, char *argv[]) |
| { |
| 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); |
| } |
| |
