fs/msdos/inode.c

/* */
This source file includes following definitions.
msdos_put_inode
msdos_put_super
parse_options
msdos_read_super
msdos_statfs
msdos_bmap
msdos_read_inode
msdos_write_inode
msdos_notify_change
init_module
cleanup_module
   1 /*
   2  *  linux/fs/msdos/inode.c
   3  *
   4  *  Written 1992,1993 by Werner Almesberger
   5  */
   6 
   7 #ifdef MODULE
   8 #include <linux/module.h>
   9 #include <linux/version.h>
  10 #else
  11 #define MOD_INC_USE_COUNT
  12 #define MOD_DEC_USE_COUNT
  13 #endif
  14 
  15 #include <linux/msdos_fs.h>
  16 #include <linux/kernel.h>
  17 #include <linux/sched.h>
  18 #include <linux/errno.h>
  19 #include <linux/string.h>
  20 #include <linux/ctype.h>
  21 #include <linux/major.h>
  22 #include <linux/blkdev.h>
  23 #include <linux/fs.h>
  24 #include <linux/stat.h>
  25 #include <linux/locks.h>
  26 
  27 #include "msbuffer.h"
  28 
  29 #include <asm/segment.h>
  30 
  31 extern int *blksize_size[];
  32 
  33 void msdos_put_inode(struct inode *inode)
     /*  */
  34 {
  35         struct inode *depend;
  36         struct super_block *sb;
  37 
  38         if (inode->i_nlink) {
  39                 if (MSDOS_I(inode)->i_busy) cache_inval_inode(inode);
  40                 return;
  41         }
  42         inode->i_size = 0;
  43         msdos_truncate(inode);
  44         depend = MSDOS_I(inode)->i_depend;
  45         sb = inode->i_sb;
  46         clear_inode(inode);
  47         if (depend) {
  48                 if (MSDOS_I(depend)->i_old != inode) {
  49                         printk("Invalid link (0x%p): expected 0x%p, got 0x%p\n",
  50                             depend, inode, MSDOS_I(depend)->i_old);
  51                         fs_panic(sb,"...");
  52                         return;
  53                 }
  54                 MSDOS_I(depend)->i_old = NULL;
  55                 iput(depend);
  56         }
  57 }
  58 
  59 
  60 void msdos_put_super(struct super_block *sb)
     /*  */
  61 {
  62         cache_inval_dev(sb->s_dev);
  63         set_blocksize (sb->s_dev,BLOCK_SIZE);
  64         lock_super(sb);
  65         sb->s_dev = 0;
  66         unlock_super(sb);
  67         MOD_DEC_USE_COUNT;
  68         return;
  69 }
  70 
  71 
  72 static struct super_operations msdos_sops = { 
  73         msdos_read_inode,
  74         msdos_notify_change,
  75         msdos_write_inode,
  76         msdos_put_inode,
  77         msdos_put_super,
  78         NULL, /* added in 0.96c */
  79         msdos_statfs,
  80         NULL
  81 };
  82 
  83 
  84 static int parse_options(char *options,char *check,char *conversion,uid_t *uid,
     /*  */
  85     gid_t *gid,int *umask,int *debug,int *fat,int *quiet,
  86         int *blksize)
  87 {
  88         char *this_char,*value;
  89 
  90         *check = 'n';
  91         *conversion = 'b';
  92         *uid = current->uid;
  93         *gid = current->gid;
  94         *umask = current->fs->umask;
  95         *debug = *fat = *quiet = 0;
  96         if (!options) return 1;
  97         for (this_char = strtok(options,","); this_char; this_char = strtok(NULL,",")) {
  98                 if ((value = strchr(this_char,'=')) != NULL)
  99                         *value++ = 0;
 100                 if (!strcmp(this_char,"check") && value) {
 101                         if (value[0] && !value[1] && strchr("rns",*value))
 102                                 *check = *value;
 103                         else if (!strcmp(value,"relaxed")) *check = 'r';
 104                         else if (!strcmp(value,"normal")) *check = 'n';
 105                         else if (!strcmp(value,"strict")) *check = 's';
 106                         else return 0;
 107                 }
 108                 else if (!strcmp(this_char,"conv") && value) {
 109                         if (value[0] && !value[1] && strchr("bta",*value))
 110                                 *conversion = *value;
 111                         else if (!strcmp(value,"binary")) *conversion = 'b';
 112                         else if (!strcmp(value,"text")) *conversion = 't';
 113                         else if (!strcmp(value,"auto")) *conversion = 'a';
 114                         else return 0;
 115                 }
 116                 else if (!strcmp(this_char,"uid")) {
 117                         if (!value || !*value)
 118                                 return 0;
 119                         *uid = simple_strtoul(value,&value,0);
 120                         if (*value)
 121                                 return 0;
 122                 }
 123                 else if (!strcmp(this_char,"gid")) {
 124                         if (!value || !*value)
 125                                 return 0;
 126                         *gid = simple_strtoul(value,&value,0);
 127                         if (*value)
 128                                 return 0;
 129                 }
 130                 else if (!strcmp(this_char,"umask")) {
 131                         if (!value || !*value)
 132                                 return 0;
 133                         *umask = simple_strtoul(value,&value,8);
 134                         if (*value)
 135                                 return 0;
 136                 }
 137                 else if (!strcmp(this_char,"debug")) {
 138                         if (value) return 0;
 139                         *debug = 1;
 140                 }
 141                 else if (!strcmp(this_char,"fat")) {
 142                         if (!value || !*value)
 143                                 return 0;
 144                         *fat = simple_strtoul(value,&value,0);
 145                         if (*value || (*fat != 12 && *fat != 16))
 146                                 return 0;
 147                 }
 148                 else if (!strcmp(this_char,"quiet")) {
 149                         if (value) return 0;
 150                         *quiet = 1;
 151                 }
 152                 else if (!strcmp(this_char,"blocksize")) {
 153                         *blksize = simple_strtoul(value,&value,0);
 154                         if (*value)
 155                                 return 0;
 156                         if (*blksize != 512 && *blksize != 1024){
 157                                 printk ("MSDOS FS: Invalid blocksize (512 or 1024)\n");
 158                         }
 159                 }
 160                 else return 0;
 161         }
 162         return 1;
 163 }
 164 
 165 
 166 /* Read the super block of an MS-DOS FS. */
 167 
 168 struct super_block *msdos_read_super(struct super_block *sb,void *data,
     /*  */
 169                                      int silent)
 170 {
 171         struct buffer_head *bh;
 172         struct msdos_boot_sector *b;
 173         int data_sectors,logical_sector_size,sector_mult;
 174         int debug,error,fat,quiet;
 175         char check,conversion;
 176         uid_t uid;
 177         gid_t gid;
 178         int umask;
 179         int blksize = 512;
 180 
 181         MOD_INC_USE_COUNT;
 182         if (hardsect_size[MAJOR(sb->s_dev)] != NULL){
 183                 blksize = hardsect_size[MAJOR(sb->s_dev)][MINOR(sb->s_dev)];
 184                 if (blksize != 512){
 185                         printk ("MSDOS: Hardware sector size is %d\n",blksize);
 186                 }
 187         }
 188         if (!parse_options((char *) data,&check,&conversion,&uid,&gid,&umask,
 189             &debug,&fat,&quiet,&blksize)
 190                 || (blksize != 512 && blksize != 1024)) {
 191                 sb->s_dev = 0;
 192                 MOD_DEC_USE_COUNT;
 193                 return NULL;
 194         }
 195         cache_init();
 196         lock_super(sb);
 197         /* The first read is always 1024 bytes */
 198         sb->s_blocksize = 1024;
 199         set_blocksize(sb->s_dev, 1024);
 200         bh = bread(sb->s_dev, 0, 1024);
 201         unlock_super(sb);
 202         if (bh == NULL || !msdos_is_uptodate(sb,bh)) {
 203                 brelse (bh);
 204                 sb->s_dev = 0;
 205                 printk("MSDOS bread failed\n");
 206                 MOD_DEC_USE_COUNT;
 207                 return NULL;
 208         }
 209         b = (struct msdos_boot_sector *) bh->b_data;
 210         set_blocksize(sb->s_dev, blksize);
 211 /*
 212  * The DOS3 partition size limit is *not* 32M as many people think.  
 213  * Instead, it is 64K sectors (with the usual sector size being
 214  * 512 bytes, leading to a 32M limit).
 215  * 
 216  * DOS 3 partition managers got around this problem by faking a 
 217  * larger sector size, ie treating multiple physical sectors as 
 218  * a single logical sector.
 219  * 
 220  * We can accommodate this scheme by adjusting our cluster size,
 221  * fat_start, and data_start by an appropriate value.
 222  *
 223  * (by Drew Eckhardt)
 224  */
 225 
 226 #define ROUND_TO_MULTIPLE(n,m) ((n) && (m) ? (n)+(m)-1-((n)-1)%(m) : 0)
 227     /* don't divide by zero */
 228 
 229         logical_sector_size = CF_LE_W(*(unsigned short *) &b->sector_size);
 230         sector_mult = logical_sector_size >> SECTOR_BITS;
 231         MSDOS_SB(sb)->cluster_size = b->cluster_size*sector_mult;
 232         MSDOS_SB(sb)->fats = b->fats;
 233         MSDOS_SB(sb)->fat_start = CF_LE_W(b->reserved)*sector_mult;
 234         MSDOS_SB(sb)->fat_length = CF_LE_W(b->fat_length)*sector_mult;
 235         MSDOS_SB(sb)->dir_start = (CF_LE_W(b->reserved)+b->fats*CF_LE_W(
 236             b->fat_length))*sector_mult;
 237         MSDOS_SB(sb)->dir_entries = CF_LE_W(*((unsigned short *) &b->dir_entries
 238             ));
 239         MSDOS_SB(sb)->data_start = MSDOS_SB(sb)->dir_start+ROUND_TO_MULTIPLE((
 240             MSDOS_SB(sb)->dir_entries << MSDOS_DIR_BITS) >> SECTOR_BITS,
 241             sector_mult);
 242         data_sectors = (CF_LE_W(*((unsigned short *) &b->sectors)) ?
 243             CF_LE_W(*((unsigned short *) &b->sectors)) :
 244             CF_LE_L(b->total_sect))*sector_mult-MSDOS_SB(sb)->data_start;
 245         error = !b->cluster_size || !sector_mult;
 246         if (!error) {
 247                 MSDOS_SB(sb)->clusters = b->cluster_size ? data_sectors/
 248                     b->cluster_size/sector_mult : 0;
 249                 MSDOS_SB(sb)->fat_bits = fat ? fat : MSDOS_SB(sb)->clusters >
 250                     MSDOS_FAT12 ? 16 : 12;
 251                 error = !MSDOS_SB(sb)->fats || (MSDOS_SB(sb)->dir_entries &
 252                     (MSDOS_DPS-1)) || MSDOS_SB(sb)->clusters+2 > MSDOS_SB(sb)->
 253                     fat_length*SECTOR_SIZE*8/MSDOS_SB(sb)->fat_bits ||
 254                     (logical_sector_size & (SECTOR_SIZE-1)) || !b->secs_track ||
 255                     !b->heads;
 256         }
 257         brelse(bh);
 258         /*
 259                 This must be done after the brelse because the bh is a dummy
 260                 allocated by msdos_bread (see buffer.c)
 261         */
 262         sb->s_blocksize = blksize;      /* Using this small block size solve the */
 263                                 /* the misfit with buffer cache and cluster */
 264                                 /* because cluster (DOS) are often aligned */
 265                                 /* on odd sector */
 266         sb->s_blocksize_bits = blksize == 512 ? 9 : 10;
 267         if (error || debug) {
 268                 /* The MSDOS_CAN_BMAP is obsolete, but left just to remember */
 269                 printk("[MS-DOS FS Rel. 12,FAT %d,check=%c,conv=%c,"
 270                     "uid=%d,gid=%d,umask=%03o%s]\n",MSDOS_SB(sb)->fat_bits,check,
 271                     conversion,uid,gid,umask,MSDOS_CAN_BMAP(MSDOS_SB(sb)) ?
 272                     ",bmap" : "");
 273                 printk("[me=0x%x,cs=%d,#f=%d,fs=%d,fl=%d,ds=%d,de=%d,data=%d,"
 274                     "se=%d,ts=%ld,ls=%d]\n",b->media,MSDOS_SB(sb)->cluster_size,
 275                     MSDOS_SB(sb)->fats,MSDOS_SB(sb)->fat_start,MSDOS_SB(sb)->
 276                     fat_length,MSDOS_SB(sb)->dir_start,MSDOS_SB(sb)->dir_entries,
 277                     MSDOS_SB(sb)->data_start,CF_LE_W(*(unsigned short *) &b->
 278                     sectors),(unsigned long)b->total_sect,logical_sector_size);
 279                 printk ("Transaction block size = %d\n",blksize);
 280         }
 281         if (error) {
 282                 if (!silent)
 283                         printk("VFS: Can't find a valid MSDOS filesystem on dev 0x%04x.\n",
 284                                    sb->s_dev);
 285                 sb->s_dev = 0;
 286                 MOD_DEC_USE_COUNT;
 287                 return NULL;
 288         }
 289         sb->s_magic = MSDOS_SUPER_MAGIC;
 290         MSDOS_SB(sb)->name_check = check;
 291         MSDOS_SB(sb)->conversion = conversion;
 292         /* set up enough so that it can read an inode */
 293         sb->s_op = &msdos_sops;
 294         MSDOS_SB(sb)->fs_uid = uid;
 295         MSDOS_SB(sb)->fs_gid = gid;
 296         MSDOS_SB(sb)->fs_umask = umask;
 297         MSDOS_SB(sb)->quiet = quiet;
 298         MSDOS_SB(sb)->free_clusters = -1; /* don't know yet */
 299         MSDOS_SB(sb)->fat_wait = NULL;
 300         MSDOS_SB(sb)->fat_lock = 0;
 301         MSDOS_SB(sb)->prev_free = 0;
 302         if (!(sb->s_mounted = iget(sb,MSDOS_ROOT_INO))) {
 303                 sb->s_dev = 0;
 304                 printk("get root inode failed\n");
 305                 MOD_DEC_USE_COUNT;
 306                 return NULL;
 307         }
 308         return sb;
 309 }
 310 
 311 
 312 void msdos_statfs(struct super_block *sb,struct statfs *buf, int bufsiz)
     /*  */
 313 {
 314         int free,nr;
 315         struct statfs tmp;
 316 
 317         lock_fat(sb);
 318         if (MSDOS_SB(sb)->free_clusters != -1)
 319                 free = MSDOS_SB(sb)->free_clusters;
 320         else {
 321                 free = 0;
 322                 for (nr = 2; nr < MSDOS_SB(sb)->clusters+2; nr++)
 323                         if (!fat_access(sb,nr,-1)) free++;
 324                 MSDOS_SB(sb)->free_clusters = free;
 325         }
 326         unlock_fat(sb);
 327         tmp.f_type = sb->s_magic;
 328         tmp.f_bsize = MSDOS_SB(sb)->cluster_size*SECTOR_SIZE;
 329         tmp.f_blocks = MSDOS_SB(sb)->clusters;
 330         tmp.f_bfree = free;
 331         tmp.f_bavail = free;
 332         tmp.f_files = 0;
 333         tmp.f_ffree = 0;
 334         tmp.f_namelen = 12;
 335         memcpy_tofs(buf, &tmp, bufsiz);
 336 }
 337 
 338 
 339 int msdos_bmap(struct inode *inode,int block)
     /*  */
 340 {
 341         struct msdos_sb_info *sb;
 342         int cluster,offset;
 343 
 344         sb = MSDOS_SB(inode->i_sb);
 345         if (inode->i_ino == MSDOS_ROOT_INO) {
 346                 return sb->dir_start + block;
 347         }
 348         cluster = block/sb->cluster_size;
 349         offset = block % sb->cluster_size;
 350         if (!(cluster = get_cluster(inode,cluster))) return 0;
 351         return (cluster-2)*sb->cluster_size+sb->data_start+offset;
 352 }
 353 
 354 
 355 void msdos_read_inode(struct inode *inode)
     /*  */
 356 {
 357         struct super_block *sb = inode->i_sb;
 358         struct buffer_head *bh;
 359         struct msdos_dir_entry *raw_entry;
 360         int nr;
 361 
 362 /* printk("read inode %d\n",inode->i_ino); */
 363         MSDOS_I(inode)->i_busy = 0;
 364         MSDOS_I(inode)->i_depend = MSDOS_I(inode)->i_old = NULL;
 365         MSDOS_I(inode)->i_binary = 1;
 366         inode->i_uid = MSDOS_SB(inode->i_sb)->fs_uid;
 367         inode->i_gid = MSDOS_SB(inode->i_sb)->fs_gid;
 368         if (inode->i_ino == MSDOS_ROOT_INO) {
 369                 inode->i_mode = (S_IRWXUGO & ~MSDOS_SB(inode->i_sb)->fs_umask) |
 370                     S_IFDIR;
 371                 inode->i_op = &msdos_dir_inode_operations;
 372                 inode->i_nlink = msdos_subdirs(inode)+2;
 373                     /* subdirs (neither . nor ..) plus . and "self" */
 374                 inode->i_size = MSDOS_SB(inode->i_sb)->dir_entries*
 375                     sizeof(struct msdos_dir_entry);
 376                 inode->i_blksize = MSDOS_SB(inode->i_sb)->cluster_size*
 377                     SECTOR_SIZE;
 378                 inode->i_blocks = (inode->i_size+inode->i_blksize-1)/
 379                     inode->i_blksize*MSDOS_SB(inode->i_sb)->cluster_size;
 380                 MSDOS_I(inode)->i_start = 0;
 381                 MSDOS_I(inode)->i_attrs = 0;
 382                 inode->i_mtime = inode->i_atime = inode->i_ctime = 0;
 383                 return;
 384         }
 385         if (!(bh = bread(inode->i_dev,inode->i_ino >> MSDOS_DPB_BITS,
 386             SECTOR_SIZE))) {
 387                 printk("dev = 0x%04X, ino = %ld\n",inode->i_dev,inode->i_ino);
 388                 panic("msdos_read_inode: unable to read i-node block");
 389         }
 390         raw_entry = &((struct msdos_dir_entry *) (bh->b_data))
 391             [inode->i_ino & (MSDOS_DPB-1)];
 392         if ((raw_entry->attr & ATTR_DIR) && !IS_FREE(raw_entry->name)) {
 393                 inode->i_mode = MSDOS_MKMODE(raw_entry->attr,S_IRWXUGO &
 394                     ~MSDOS_SB(inode->i_sb)->fs_umask) | S_IFDIR;
 395                 inode->i_op = &msdos_dir_inode_operations;
 396                 MSDOS_I(inode)->i_start = CF_LE_W(raw_entry->start);
 397                 inode->i_nlink = msdos_subdirs(inode);
 398                     /* includes .., compensating for "self" */
 399 #ifdef DEBUG
 400                 if (!inode->i_nlink) {
 401                         printk("directory %d: i_nlink == 0\n",inode->i_ino);
 402                         inode->i_nlink = 1;
 403                 }
 404 #endif
 405                 inode->i_size = 0;
 406                 if ((nr = CF_LE_W(raw_entry->start)) != 0)
 407                         while (nr != -1) {
 408                                 inode->i_size += SECTOR_SIZE*MSDOS_SB(inode->
 409                                     i_sb)->cluster_size;
 410                                 if (!(nr = fat_access(inode->i_sb,nr,-1))) {
 411                                         printk("Directory %ld: bad FAT\n",
 412                                             inode->i_ino);
 413                                         break;
 414                                 }
 415                         }
 416         }
 417         else {
 418                 inode->i_mode = MSDOS_MKMODE(raw_entry->attr,(IS_NOEXEC(inode)
 419                     ? S_IRUGO|S_IWUGO : S_IRWXUGO) & ~MSDOS_SB(inode->i_sb)->fs_umask) |
 420                     S_IFREG;
 421                 inode->i_op = sb->s_blocksize == 1024
 422                         ? &msdos_file_inode_operations_1024
 423                         : &msdos_file_inode_operations;
 424                 MSDOS_I(inode)->i_start = CF_LE_W(raw_entry->start);
 425                 inode->i_nlink = 1;
 426                 inode->i_size = CF_LE_L(raw_entry->size);
 427         }
 428         MSDOS_I(inode)->i_binary = is_binary(MSDOS_SB(inode->i_sb)->conversion,
 429             raw_entry->ext);
 430         MSDOS_I(inode)->i_attrs = raw_entry->attr & ATTR_UNUSED;
 431         /* this is as close to the truth as we can get ... */
 432         inode->i_blksize = MSDOS_SB(inode->i_sb)->cluster_size*SECTOR_SIZE;
 433         inode->i_blocks = (inode->i_size+inode->i_blksize-1)/
 434             inode->i_blksize*MSDOS_SB(inode->i_sb)->cluster_size;
 435         inode->i_mtime = inode->i_atime = inode->i_ctime =
 436             date_dos2unix(CF_LE_W(raw_entry->time),CF_LE_W(raw_entry->date));
 437         brelse(bh);
 438 }
 439 
 440 
 441 void msdos_write_inode(struct inode *inode)
     /*  */
 442 {
 443         struct super_block *sb = inode->i_sb;
 444         struct buffer_head *bh;
 445         struct msdos_dir_entry *raw_entry;
 446 
 447         inode->i_dirt = 0;
 448         if (inode->i_ino == MSDOS_ROOT_INO || !inode->i_nlink) return;
 449         if (!(bh = bread(inode->i_dev,inode->i_ino >> MSDOS_DPB_BITS,
 450             SECTOR_SIZE))) {
 451                 printk("dev = 0x%04X, ino = %ld\n",inode->i_dev,inode->i_ino);
 452                 panic("msdos_write_inode: unable to read i-node block");
 453         }
 454         raw_entry = &((struct msdos_dir_entry *) (bh->b_data))
 455             [inode->i_ino & (MSDOS_DPB-1)];
 456         if (S_ISDIR(inode->i_mode)) {
 457                 raw_entry->attr = ATTR_DIR;
 458                 raw_entry->size = 0;
 459         }
 460         else {
 461                 raw_entry->attr = ATTR_NONE;
 462                 raw_entry->size = CT_LE_L(inode->i_size);
 463         }
 464         raw_entry->attr |= MSDOS_MKATTR(inode->i_mode) |
 465             MSDOS_I(inode)->i_attrs;
 466         raw_entry->start = CT_LE_L(MSDOS_I(inode)->i_start);
 467         date_unix2dos(inode->i_mtime,&raw_entry->time,&raw_entry->date);
 468         raw_entry->time = CT_LE_W(raw_entry->time);
 469         raw_entry->date = CT_LE_W(raw_entry->date);
 470         mark_buffer_dirty(bh, 1);
 471         brelse(bh);
 472 }
 473 
 474 
 475 int msdos_notify_change(struct inode * inode,struct iattr * attr)
     /*  */
 476 {
 477         int error;
 478 
 479         error = inode_change_ok(inode, attr);
 480         if (error)
 481                 return error;
 482 
 483         if (((attr->ia_valid & ATTR_UID) && 
 484              (attr->ia_uid != MSDOS_SB(inode->i_sb)->fs_uid)) ||
 485             ((attr->ia_valid & ATTR_GID) && 
 486              (attr->ia_gid != MSDOS_SB(inode->i_sb)->fs_gid)) ||
 487             ((attr->ia_valid & ATTR_MODE) &&
 488              (attr->ia_mode & ~MSDOS_VALID_MODE)))
 489                 error = -EPERM;
 490 
 491         if (error)
 492                 return MSDOS_SB(inode->i_sb)->quiet ? 0 : error;
 493 
 494         inode_setattr(inode, attr);
 495 
 496         if (IS_NOEXEC(inode) && !S_ISDIR(inode->i_mode))
 497                 inode->i_mode &= S_IFMT | S_IRUGO | S_IWUGO;
 498         else
 499                 inode->i_mode |= S_IXUGO;
 500 
 501         inode->i_mode = ((inode->i_mode & S_IFMT) | ((((inode->i_mode & S_IRWXU
 502             & ~MSDOS_SB(inode->i_sb)->fs_umask) | S_IRUSR) >> 6)*S_IXUGO)) &
 503             ~MSDOS_SB(inode->i_sb)->fs_umask;
 504         return 0;
 505 }
 506 #ifdef MODULE
 507 
 508 char kernel_version[] = UTS_RELEASE;
 509 
 510 static struct file_system_type msdos_fs_type = {
 511         msdos_read_super, "msdos", 1, NULL
 512 };
 513 
 514 int init_module(void)
     /*  */
 515 {
 516         register_filesystem(&msdos_fs_type);
 517         return 0;
 518 }
 519 
 520 void cleanup_module(void)
     /*  */
 521 {
 522         unregister_filesystem(&msdos_fs_type);
 523 }
 524 
 525 #endif
 526
/* */
root/fs/msdos/inode.c

DEFINITIONS
