1 /* 2 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README 3 */ 4 5 #include <stdio.h> 6 #include <sys/types.h> 7 #include <sys/stat.h> 8 #include <fcntl.h> 9 #include <linux/fs.h> 10 #include <errno.h> 11 12 int main(int argc, char **argv) 13 { 14 int fd; 15 int block; 16 int first_block; 17 int last_block; 18 int totals_block; 19 int fragments; 20 int i; 21 int n; 22 23 for (n = 1; n < argc; n++) { 24 if (argc < 2) { 25 printf 26 ("Used to see file maps \nUsage: %s filename1 [[..[filename2]...filename(N-1)] filenameN]\n", 27 argv[0]); 28 return 0; 29 } 30 fd = open(argv[n], O_RDONLY); 31 if (fd == -1) { 32 perror("open failed"); 33 continue; 34 } 35 // printf ("file %s occupies blocks: \n", argv[1]); 36 // printf ("START\tEND\tCOUNT\n"); 37 i = 0; 38 block = 0; 39 first_block = 0; 40 last_block = 0; 41 fragments = 0; 42 totals_block = 0; 43 44 while (ioctl(fd, FIBMAP, &block) == 0) { 45 if (first_block == 0) { 46 last_block = block - 1; 47 first_block = block; 48 } 49 if (block != last_block + 1) { 50 // printf ("%d\t%d\t%d\n",first_block,last_block,last_block-first_block+1); 51 totals_block += last_block - first_block + 1; 52 fragments++; 53 first_block = block; 54 last_block = block; 55 } else { 56 last_block++; 57 } 58 59 if (!block) { 60 //printf ("Fragments: %d\tBlocks: %d\n",fragments,totals_block); 61 //printf ("%d:%d\t",fragments,totals_block); 62 //if (fragments == 1) printf(".",totals_block); 63 //else printf("%d_",fragments,totals_block); 64 printf("%d\n", fragments); 65 break; 66 } 67 68 i++; 69 block = i; 70 } 71 if (errno) { 72 perror("FIBMAP failed"); 73 } 74 close(fd); 75 // printf ("\n"); 76 } 77 return 0; 78 } 79
