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Commit 276e9f82 authored by unknown's avatar unknown
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innochecksum.c: 

  Changed from C++ comments to C comments
  Did some adaption to MySQL Coding Style


extra/innochecksum.c:
  Changed from C++ comments to C comments
  Did some adaption to MySQL Coding Style
parent 74aeffda
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Showing with 200 additions and 178 deletions
extra/innochecksum.c
View file @ 276e9f82
......@@ -24,7 +24,7 @@
Published with a permission.
*/
// needed to have access to 64 bit file functions
/* needed to have access to 64 bit file functions */
#define _LARGEFILE_SOURCE
#define _LARGEFILE64_SOURCE
......@@ -35,7 +35,7 @@
#include <sys/stat.h>
#include <unistd.h>
// all of these ripped from InnoDB code from MySQL 4.0.22
/* all of these ripped from InnoDB code from MySQL 4.0.22 */
#define UT_HASH_RANDOM_MASK 1463735687
#define UT_HASH_RANDOM_MASK2 1653893711
#define FIL_PAGE_LSN 16
......@@ -46,14 +46,15 @@
#define FIL_PAGE_SPACE_OR_CHKSUM 0
#define UNIV_PAGE_SIZE (2 * 8192)
// command line argument to do page checks (that's it)
// another argument to specify page ranges... seek to right spot and go from there
/* command line argument to do page checks (that's it) */
/* another argument to specify page ranges... seek to right spot and go from there */
typedef unsigned long int ulint;
typedef unsigned char byte;
/* innodb function in name; modified slightly to not have the ASM version (lots of #ifs that didn't apply) */
ulint mach_read_from_4(byte *b) {
ulint mach_read_from_4(byte *b)
{
return( ((ulint)(b[0]) << 24)
+ ((ulint)(b[1]) << 16)
+ ((ulint)(b[2]) << 8)
......@@ -80,10 +81,11 @@ ut_fold_binary(
ulint len) /* in: length */
{
ulint i;
ulint fold = 0;
ulint fold= 0;
for (i = 0; i < len; i++) {
fold = ut_fold_ulint_pair(fold, (ulint)(*str));
for (i= 0; i < len; i++)
{
fold= ut_fold_ulint_pair(fold, (ulint)(*str));
str++;
}
......@@ -106,12 +108,12 @@ buf_calc_page_new_checksum(
checksum is stored, and also the last 8 bytes of page because
there we store the old formula checksum. */
checksum = ut_fold_binary(page + FIL_PAGE_OFFSET,
checksum= ut_fold_binary(page + FIL_PAGE_OFFSET,
FIL_PAGE_FILE_FLUSH_LSN - FIL_PAGE_OFFSET)
+ ut_fold_binary(page + FIL_PAGE_DATA,
UNIV_PAGE_SIZE - FIL_PAGE_DATA
- FIL_PAGE_END_LSN_OLD_CHKSUM);
checksum = checksum & 0xFFFFFFFF;
checksum= checksum & 0xFFFFFFFF;
return(checksum);
}
......@@ -124,56 +126,59 @@ buf_calc_page_old_checksum(
{
ulint checksum;
checksum = ut_fold_binary(page, FIL_PAGE_FILE_FLUSH_LSN);
checksum= ut_fold_binary(page, FIL_PAGE_FILE_FLUSH_LSN);
checksum = checksum & 0xFFFFFFFF;
checksum= checksum & 0xFFFFFFFF;
return(checksum);
}
int main(int argc, char **argv) {
FILE *f; // our input file
byte *p; // storage of pages read
int bytes; // bytes read count
ulint ct; // current page number (0 based)
int now; // current time
int lastt; // last time
ulint oldcsum, oldcsumfield, csum, csumfield, logseq, logseqfield; // ulints for checksum storage
struct stat st; // for stat, if you couldn't guess
unsigned long long int size; // size of file (has to be 64 bits)
ulint pages; // number of pages in file
ulint start_page = 0, end_page = 0, use_end_page = 0; // for starting and ending at certain pages
off_t offset = 0;
int just_count = 0; // if true, just print page count
int verbose = 0;
int debug = 0;
int main(int argc, char **argv)
{
FILE *f; /* our input file */
byte *p; /* storage of pages read */
int bytes; /* bytes read count */
ulint ct; /* current page number (0 based) */
int now; /* current time */
int lastt; /* last time */
ulint oldcsum, oldcsumfield, csum, csumfield, logseq, logseqfield; /* ulints for checksum storage */
struct stat st; /* for stat, if you couldn't guess */
unsigned long long int size; /* size of file (has to be 64 bits) */
ulint pages; /* number of pages in file */
ulint start_page= 0, end_page= 0, use_end_page= 0; /* for starting and ending at certain pages */
off_t offset= 0;
int just_count= 0; /* if true, just print page count */
int verbose= 0;
int debug= 0;
int c;
int fd;
// remove arguments
while ((c = getopt(argc, argv, "cvds:e:p:")) != -1) {
switch (c) {
/* remove arguments */
while ((c= getopt(argc, argv, "cvds:e:p:")) != -1)
{
switch (c)
{
case 'v':
verbose = 1;
verbose= 1;
break;
case 'c':
just_count = 1;
just_count= 1;
break;
case 's':
start_page = atoi(optarg);
start_page= atoi(optarg);
break;
case 'e':
end_page = atoi(optarg);
use_end_page = 1;
end_page= atoi(optarg);
use_end_page= 1;
break;
case 'p':
start_page = atoi(optarg);
end_page = atoi(optarg);
use_end_page = 1;
start_page= atoi(optarg);
end_page= atoi(optarg);
use_end_page= 1;
break;
case 'd':
debug = 1;
debug= 1;
break;
case ':':
fprintf(stderr, "option -%c requires an argument\n", optopt);
......@@ -186,11 +191,12 @@ int main(int argc, char **argv) {
}
}
// debug implies verbose...
if (debug) verbose = 1;
/* debug implies verbose... */
if (debug) verbose= 1;
// make sure we have the right arguments
if (optind >= argc) {
/* make sure we have the right arguments */
if (optind >= argc)
{
printf("InnoDB offline file checksum utility.\n");
printf("usage: %s [-c] [-s <start page>] [-e <end page>] [-p <page>] [-v] [-d] <filename>\n", argv[0]);
printf("\t-c\tprint the count of pages in the file\n");
......@@ -202,101 +208,117 @@ int main(int argc, char **argv) {
return 1;
}
// stat the file to get size and page count
if (stat(argv[optind], &st)) {
/* stat the file to get size and page count */
if (stat(argv[optind], &st))
{
perror("error statting file");
return 1;
}
size = st.st_size;
pages = size / UNIV_PAGE_SIZE;
if (just_count) {
size= st.st_size;
pages= size / UNIV_PAGE_SIZE;
if (just_count)
{
printf("%lu\n", pages);
return 0;
} else if (verbose) {
printf("file %s = %llu bytes (%lu pages)...\n", argv[1], size, pages);
}
else if (verbose)
{
printf("file %s= %llu bytes (%lu pages)...\n", argv[1], size, pages);
printf("checking pages in range %lu to %lu\n", start_page, use_end_page ? end_page : (pages - 1));
}
// open the file for reading
f = fopen(argv[optind], "r");
if (!f) {
/* open the file for reading */
f= fopen(argv[optind], "r");
if (!f)
{
perror("error opening file");
return 1;
}
// seek to the necessary position
if (start_page) {
fd = fileno(f);
if (!fd) {
/* seek to the necessary position */
if (start_page)
{
fd= fileno(f);
if (!fd)
{
perror("unable to obtain file descriptor number");
return 1;
}
offset = (off_t)start_page * (off_t)UNIV_PAGE_SIZE;
offset= (off_t)start_page * (off_t)UNIV_PAGE_SIZE;
if (lseek(fd, offset, SEEK_SET) != offset) {
if (lseek(fd, offset, SEEK_SET) != offset)
{
perror("unable to seek to necessary offset");
return 1;
}
}
// allocate buffer for reading (so we don't realloc every time)
p = (byte *)malloc(UNIV_PAGE_SIZE);
/* allocate buffer for reading (so we don't realloc every time) */
p= (byte *)malloc(UNIV_PAGE_SIZE);
// main checksumming loop
ct = start_page;
lastt = 0;
while (!feof(f)) {
bytes = fread(p, 1, UNIV_PAGE_SIZE, f);
/* main checksumming loop */
ct= start_page;
lastt= 0;
while (!feof(f))
{
bytes= fread(p, 1, UNIV_PAGE_SIZE, f);
if (!bytes && feof(f)) return 0;
if (bytes != UNIV_PAGE_SIZE) {
if (bytes != UNIV_PAGE_SIZE)
{
fprintf(stderr, "bytes read (%d) doesn't match universal page size (%d)\n", bytes, UNIV_PAGE_SIZE);
return 1;
}
// check the "stored log sequence numbers"
logseq = mach_read_from_4(p + FIL_PAGE_LSN + 4);
logseqfield = mach_read_from_4(p + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM + 4);
/* check the "stored log sequence numbers" */
logseq= mach_read_from_4(p + FIL_PAGE_LSN + 4);
logseqfield= mach_read_from_4(p + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM + 4);
if (debug)
printf("page %lu: log sequence number: first = %lu; second = %lu\n", ct, logseq, logseqfield);
if (logseq != logseqfield) {
if (logseq != logseqfield)
{
fprintf(stderr, "page %lu invalid (fails log sequence number check)\n", ct);
return 1;
}
// check old method of checksumming
oldcsum = buf_calc_page_old_checksum(p);
oldcsumfield = mach_read_from_4(p + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM);
/* check old method of checksumming */
oldcsum= buf_calc_page_old_checksum(p);
oldcsumfield= mach_read_from_4(p + UNIV_PAGE_SIZE - FIL_PAGE_END_LSN_OLD_CHKSUM);
if (debug)
printf("page %lu: old style: calculated = %lu; recorded = %lu\n", ct, oldcsum, oldcsumfield);
if (oldcsumfield != mach_read_from_4(p + FIL_PAGE_LSN) && oldcsumfield != oldcsum) {
if (oldcsumfield != mach_read_from_4(p + FIL_PAGE_LSN) && oldcsumfield != oldcsum)
{
fprintf(stderr, "page %lu invalid (fails old style checksum)\n", ct);
return 1;
}
// now check the new method
csum = buf_calc_page_new_checksum(p);
csumfield = mach_read_from_4(p + FIL_PAGE_SPACE_OR_CHKSUM);
/* now check the new method */
csum= buf_calc_page_new_checksum(p);
csumfield= mach_read_from_4(p + FIL_PAGE_SPACE_OR_CHKSUM);
if (debug)
printf("page %lu: new style: calculated = %lu; recorded = %lu\n", ct, csum, csumfield);
if (csumfield != 0 && csum != csumfield) {
if (csumfield != 0 && csum != csumfield)
{
fprintf(stderr, "page %lu invalid (fails new style checksum)\n", ct);
return 1;
}
// end if this was the last page we were supposed to check
/* end if this was the last page we were supposed to check */
if (use_end_page && (ct >= end_page))
return 0;
// do counter increase and progress printing
/* do counter increase and progress printing */
ct++;
if (verbose) {
if (ct % 64 == 0) {
now = time(0);
if (!lastt) lastt = now;
if (now - lastt >= 1) {
if (verbose)
{
if (ct % 64 == 0)
{
now= time(0);
if (!lastt) lastt= now;
if (now - lastt >= 1)
{
printf("page %lu okay: %.3f%% done\n", (ct - 1), (float) ct / pages * 100);
lastt = now;
lastt= now;
}
}
}
......
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