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C++ wsect函数代码示例

本文整理汇总了C++中wsect函数的典型用法代码示例。如果您正苦于以下问题：C++ wsect函数的具体用法？C++ wsect怎么用？C++ wsect使用的例子？那么, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了wsect函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: mkfs

int 
mkfs(int nblocks, int ninodes, int size) {

  int i;
  char buf[BLOCK_SIZE];

  sb.size = xint(size);
  sb.nblocks = xint(nblocks); // so whole disk is size sectors
  sb.ninodes = xint(ninodes);

  bitblocks = size/(512*8) + 1;
  usedblocks = ninodes / IPB + 3 + bitblocks;
  freeblock = usedblocks;

  printf("used %d (bit %d ninode %zu) free %u total %d\n", usedblocks,
         bitblocks, ninodes/IPB + 1, freeblock, nblocks+usedblocks);

  assert(nblocks + usedblocks == size);

  for(i = 0; i < nblocks + usedblocks; i++)
    wsect(i, zeroes);

  memset(buf, 0, sizeof(buf));
  memmove(buf, &sb, sizeof(sb));
  wsect(1, buf);


  return 0;
}
开发者ID:SongZhao，项目名称:Operation-System-Project-Collection，代码行数:29，代码来源:mkfs.c

示例2: iappend

void
iappend(uint inum, void *xp, int n) {
	char *p = (char *)xp;
	uint fbn, off, n1;
	struct dinode din;
	char buf[512];
	uint indirect[NINDIRECT];
	uint x;

	rinode(inum, &din);

	off = xint(din.size);

	while (n > 0) {
		fbn = off / 512;
		assert(fbn < MAXFILE);

		if (fbn < NDIRECT) {
			if (xint(din.addrs[fbn]) == 0) {
				din.addrs[fbn] = xint(freeblock++);
				usedblocks++;
			}

			x = xint(din.addrs[fbn]);
		} else {
			if (xint(din.addrs[NDIRECT]) == 0) {
				// printf("allocate indirect block\n");
				din.addrs[NDIRECT] = xint(freeblock++);
				usedblocks++;
			}

			// printf("read indirect block\n");
			rsect(xint(din.addrs[NDIRECT]), (char *)indirect);

			if (indirect[fbn - NDIRECT] == 0) {
				indirect[fbn - NDIRECT] = xint(freeblock++);
				usedblocks++;
				wsect(xint(din.addrs[NDIRECT]), (char *)indirect);
			}

			x = xint(indirect[fbn - NDIRECT]);
		}

		n1 = min(n, (fbn + 1) * 512 - off);
		rsect(x, buf);
		memcpy(buf + off - (fbn * 512), p, n1);
		wsect(x, buf);
		n -= n1;
		off += n1;
		p += n1;
	}

	din.size = xint(off);
	winode(inum, &din);
}
开发者ID:Tachibana-General-Laboratories，项目名称:lainos-fail，代码行数:55，代码来源:mkfs.c

示例3: balloc

void
balloc(int used)
{
  uchar buf[512];
  int i;
  int j = 0;
  int temp;

  printf("balloc: first %d blocks have been allocated\n", used);
  //assert(used < 512*8);
  while(used > 0)
  {
    bzero(buf, 512);
    if (used > 4096)
    {
      temp = 4096;
    }
    else
    {
      temp = used;
    }
    for(i = 0; i < temp; i++){
      buf[i/8] = buf[i/8] | (0x1 << (i%8));
    }
    used -= 4096;
    printf("balloc: write bitmap block at sector %zu\n", ninodes/IPB + 3 + j);
    wsect(ninodes / IPB + 3 + j, buf);
    j++;
  }
}
开发者ID:YueDayu，项目名称:Themis_GUI，代码行数:30，代码来源:mkfs.c

示例4: iappend

void
iappend(uint inum, void *xp, int n)
{
  char *p = (char*)xp;
  uint fbn, off, n1;
  struct dinode din;
  char buf[BSIZE];
  uint indirect[NINDIRECT];
  uint x;

  rinode(inum, &din);
  off = xint(din.size);
  // printf("append inum %d at off %d sz %d\n", inum, off, n);
  while(n > 0){
    fbn = off / BSIZE;
    assert(fbn < MAXFILE);
    if(fbn < NDIRECT){
      if(xint(din.addrs[fbn]) == 0){
        din.addrs[fbn] = xint(freeblock++);
      }
      x = xint(din.addrs[fbn]);
    } else {
      if(xint(din.addrs[NDIRECT]) == 0){
        din.addrs[NDIRECT] = xint(freeblock++);
      }
      rsect(xint(din.addrs[NDIRECT]), (char*)indirect);
      if(indirect[fbn - NDIRECT] == 0){
        indirect[fbn - NDIRECT] = xint(freeblock++);
        wsect(xint(din.addrs[NDIRECT]), (char*)indirect);
      }
      x = xint(indirect[fbn-NDIRECT]);
    }
    n1 = min(n, (fbn + 1) * BSIZE - off);
    rsect(x, buf);
    bcopy(p, buf + off - (fbn * BSIZE), n1);
    wsect(x, buf);
    n -= n1;
    off += n1;
    p += n1;
  }
  din.size = xint(off);
  winode(inum, &din);
}
开发者ID:Dsdubov，项目名称:xv6，代码行数:43，代码来源:mkfs.c

示例5: winode

void
winode(uint inum, struct dinode *ip) {
	char buf[512];
	uint bn;
	struct dinode *dip;

	bn = i2b(inum);
	rsect(bn, buf);
	dip = ((struct dinode *)buf) + (inum % IPB);
	*dip = *ip;
	wsect(bn, buf);
}
开发者ID:Tachibana-General-Laboratories，项目名称:lainos-fail，代码行数:12，代码来源:mkfs.c

示例6: winode

void
winode(uint inum, struct dinode *ip)
{
  char buf[BSIZE];
  uint bn;
  struct dinode *dip;

  bn = IBLOCK(inum, sb);
  rsect(bn, buf);
  dip = ((struct dinode*)buf) + (inum % IPB);
  *dip = *ip;
  wsect(bn, buf);
}
开发者ID:Dsdubov，项目名称:xv6，代码行数:13，代码来源:mkfs.c

示例7: winode

void
winode(uint inum, struct dinode *ip)
{
  char buf[BSIZE];
  uint bn;
  struct dinode *dip;

  bn = IBLOCK(inum);
  rsect(bn, buf);
  dip = ((struct dinode*)buf) + (inum % IPB);
  *dip = *ip;
  printf("winode %d bn %d\n", inum, bn);
  wsect(bn, buf);
}
开发者ID:extensibl，项目名称:fscq-impl，代码行数:14，代码来源:mkfs.c

示例8: balloc

void
balloc(int used)
{
  uchar buf[BSIZE];
  int i;

  printf("balloc: first %d blocks have been allocated\n", used);
  assert(used < BSIZE*8);
  bzero(buf, BSIZE);
  for(i = 0; i < used; i++){
    buf[i/8] = buf[i/8] | (0x1 << (i%8));
  }
  printf("balloc: write bitmap block at sector %d\n", sb.bmapstart);
  wsect(sb.bmapstart, buf);
}
开发者ID:Dsdubov，项目名称:xv6，代码行数:15，代码来源:mkfs.c

示例9: balloc

void
balloc(int used)
{
  uchar buf[512];
  int i;

  printf("balloc: first %d blocks have been allocated\n", used);
  assert(used < 512*8);
  bzero(buf, 512);
  for(i = 0; i < used; i++){
    buf[i/8] = buf[i/8] | (0x1 << (i%8));
  }
  printf("balloc: write bitmap block at sector %zu\n", ninodes/IPB + 3);
  wsect(ninodes / IPB + 3, buf);
}
开发者ID:bitc，项目名称:3，代码行数:15，代码来源:mkfs.c

示例10: balloc

void
balloc(int used)
{
  uchar buf[1024];
  int i;
  uint sz = sizeof(buf)/sizeof(buf[0]);

  printf("balloc: first %d blocks have been allocated\n", used);
  assert(used < sz);
  bzero(buf, sz);
  for(i = 0; i < used; i++) {
    buf[i/8] = buf[i/8] | (0x1 << (i%8));
  }
  printf("balloc: write bitmap block at sector %zu\n", ninodes/IPB + 3);
  wsect(ninodes / IPB + 3, buf);
}
开发者ID:mmerler，项目名称:osgroup，代码行数:16，代码来源:mkfs.c

示例11: balloc

void
balloc(int used)
{
  uchar buf[512];
  int i, j = 0;

  printf("balloc: first %d blocks have been allocated\n", used);
  //assert(used < 512*8);
  while(used > 0)
  {
    bzero(buf, 512);
    for(i = 0; i < used && i < 512; i++){
      buf[i/8] = buf[i/8] | (0x1 << (i%8));
    }
    used -= 512;

    printf("%dballoc: write bitmap block at sector %zu\n", used,  ninodes/IPB + 3+j);
    wsect(ninodes / IPB + 3 + j, buf);
    j ++;
  }
  printf("balloc finished.");
}
开发者ID:treejames，项目名称:xv6，代码行数:22，代码来源:mkfs.c

示例12: main

int
main(int argc, char *argv[])
{
  int i, cc, fd;
  uint rootino, inum, off;
  struct dirent de;
  char buf[512];
  struct dinode din;


  static_assert(sizeof(int) == 4, "Integers must be 4 bytes!");

  if(argc < 2){
    fprintf(stderr, "Usage: mkfs fs.img files...\n");
    exit(1);
  }

  assert((512 % sizeof(struct dinode)) == 0);
  assert((512 % sizeof(struct dirent)) == 0);

  fsfd = open(argv[1], O_RDWR|O_CREAT|O_TRUNC, 0666);
  if(fsfd < 0){
    perror(argv[1]);
    exit(1);
  }

  sb.size = xint(size);
  sb.nblocks = xint(nblocks); // so whole disk is size sectors
  sb.ninodes = xint(ninodes);
  sb.nlog = xint(nlog);

  bitblocks = size/(512*8) + 1;
  usedblocks = ninodes / IPB + 3 + bitblocks;
  freeblock = usedblocks;

  printf("used %d (bit %d ninode %zu) free %u log %u total %d\n", usedblocks,
         bitblocks, ninodes/IPB + 1, freeblock, nlog, nblocks+usedblocks+nlog);

  assert(nblocks + usedblocks + nlog == size);

  for(i = 0; i < nblocks + usedblocks + nlog; i++)
    wsect(i, zeroes);

  memset(buf, 0, sizeof(buf));
  memmove(buf, &sb, sizeof(sb));
  wsect(1, buf);

  rootino = ialloc(T_DIR);
  assert(rootino == ROOTINO);

  bzero(&de, sizeof(de));
  de.inum = xshort(rootino);
  strcpy(de.name, ".");
  iappend(rootino, &de, sizeof(de));

  bzero(&de, sizeof(de));
  de.inum = xshort(rootino);
  strcpy(de.name, "..");
  iappend(rootino, &de, sizeof(de));

  for(i = 2; i < argc; i++){
    char *name = argv[i];

    if (!strncmp(name, "fs/", 3))
      name += 3;

    assert(index(name, '/') == 0);

    if((fd = open(argv[i], 0)) < 0){
      perror(argv[i]);
      exit(1);
    }
    
    inum = ialloc(T_FILE);

    bzero(&de, sizeof(de));
    de.inum = xshort(inum);
    strncpy(de.name, name, DIRSIZ);
    iappend(rootino, &de, sizeof(de));

    while((cc = read(fd, buf, sizeof(buf))) > 0)
      iappend(inum, buf, cc);

    close(fd);
  }

  // fix size of root inode dir
  rinode(rootino, &din);
  off = xint(din.size);
  off = ((off/BSIZE) + 1) * BSIZE;
  din.size = xint(off);
  winode(rootino, &din);

  balloc(usedblocks);

  exit(0);
}
开发者ID:swetland，项目名称:xv6，代码行数:97，代码来源:mkfs.c

示例13: main

int
main(int argc, char *argv[])
{
  int i, cc, fd;
  uint rootino, inum, off;
  struct dirent de;
  char buf[BSIZE];
  struct dinode din;


  static_assert(sizeof(int) == 4, "Integers must be 4 bytes!");

  if(argc < 2){
    fprintf(stderr, "Usage: mkfs fs.img files...\n");
    exit(1);
  }

  assert((BSIZE % sizeof(struct dinode)) == 0);
  assert((BSIZE % sizeof(struct dirent)) == 0);

  fsfd = open(argv[1], O_RDWR|O_CREAT|O_TRUNC, 0666);
  if(fsfd < 0){
    perror(argv[1]);
    exit(1);
  }

  // 1 fs block = 1 disk sector
  nmeta = 2 + nlog + ninodeblocks + nbitmap;
  nblocks = FSSIZE - nmeta;

  sb.size = xint(FSSIZE);
  sb.nblocks = xint(nblocks);
  sb.ninodes = xint(NINODES);
  sb.nlog = xint(nlog);
  sb.logstart = xint(2);
  sb.inodestart = xint(2+nlog);
  sb.bmapstart = xint(2+nlog+ninodeblocks);

  printf("nmeta %d (boot, super, log blocks %u inode blocks %u, bitmap blocks %u) blocks %d total %d\n",
         nmeta, nlog, ninodeblocks, nbitmap, nblocks, FSSIZE);

  freeblock = nmeta;     // the first free block that we can allocate

  for(i = 0; i < FSSIZE; i++)
    wsect(i, zeroes);

  memset(buf, 0, sizeof(buf));
  memmove(buf, &sb, sizeof(sb));
  wsect(1, buf);

  rootino = ialloc(T_DIR);
  assert(rootino == ROOTINO);

  bzero(&de, sizeof(de));
  de.inum = xshort(rootino);
  strcpy(de.name, ".");
  iappend(rootino, &de, sizeof(de));

  bzero(&de, sizeof(de));
  de.inum = xshort(rootino);
  strcpy(de.name, "..");
  iappend(rootino, &de, sizeof(de));

  for(i = 2; i < argc; i++){
    assert(index(argv[i], '/') == 0);

    if((fd = open(argv[i], 0)) < 0){
      perror(argv[i]);
      exit(1);
    }
    
    // Skip leading _ in name when writing to file system.
    // The binaries are named _rm, _cat, etc. to keep the
    // build operating system from trying to execute them
    // in place of system binaries like rm and cat.
    if(argv[i][0] == '_')
      ++argv[i];

    inum = ialloc(T_FILE);

    bzero(&de, sizeof(de));
    de.inum = xshort(inum);
    strncpy(de.name, argv[i], DIRSIZ);
    iappend(rootino, &de, sizeof(de));

    while((cc = read(fd, buf, sizeof(buf))) > 0)
      iappend(inum, buf, cc);

    close(fd);
  }

  // fix size of root inode dir
  rinode(rootino, &din);
  off = xint(din.size);
  off = ((off/BSIZE) + 1) * BSIZE;
  din.size = xint(off);
  winode(rootino, &din);

  balloc(freeblock);

//.........这里部分代码省略.........
开发者ID:Dsdubov，项目名称:xv6，代码行数:101，代码来源:mkfs.c

示例14: main

int
main(int argc, char *argv[])
{
	int i, cc, fd;
	uint rootino, inum, off, bin_inum, tests_inum, sbin_inum; //dir_inum
	struct dirent de;
	char buf[BSIZE];
	struct dinode din;


	static_assert(sizeof(int) == 4, "Integers must be 4 bytes!");

	if(argc < 2) {
		fprintf(stderr, "Usage: mkfs fs.img files...\n");
		exit(1);
	}

	assert((BSIZE % sizeof(struct dinode)) == 0);
	assert((BSIZE % sizeof(struct dirent)) == 0);

	fsfd = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, 0666);
	if(fsfd < 0) {
		perror(argv[1]);
		exit(1);
	}

	// 1 fs block = 1 disk sector
	nmeta = 2 + nlog + ninodeblocks + nbitmap;
	nblocks = FSSIZE - nmeta;

	sb.size = xint(FSSIZE);
	sb.nblocks = xint(nblocks);
	sb.ninodes = xint(NINODES);
	sb.nlog = xint(nlog);
	sb.logstart = xint(2);
	sb.inodestart = xint(2 + nlog);
	sb.bmapstart = xint(2 + nlog + ninodeblocks);

	printf("nmeta %d (boot, super, log blocks %u inode blocks %u, bitmap blocks %u) blocks %d total %d\n",
		   nmeta, nlog, ninodeblocks, nbitmap, nblocks, FSSIZE);

	freeblock = nmeta;     // the first free block that we can allocate

	for(i = 0; i < FSSIZE; i++) {
		wsect(i, zeroes);
	}

	memset(buf, 0, sizeof(buf));
	memmove(buf, &sb, sizeof(sb));
	wsect(1, buf);

	rootino = ialloc(T_DIR);
	assert(rootino == ROOTINO);

	bzero(&de, sizeof(de));
	de.inum = xshort(rootino);
	strcpy(de.name, ".");
	iappend(rootino, &de, sizeof(de));

	bzero(&de, sizeof(de));
	de.inum = xshort(rootino);
	strcpy(de.name, "..");
	iappend(rootino, &de, sizeof(de));

	// create /bin folder
	bin_inum = ialloc(T_DIR);
	bzero(&de, sizeof(de));
	de.inum = xshort(bin_inum);
	strcpy(de.name, "bin");
	iappend(rootino, &de, sizeof(de));

	bzero(&de, sizeof(de));
	de.inum = xshort(bin_inum);
	strcpy(de.name, ".");
	iappend(bin_inum, &de, sizeof(de));

	bzero(&de, sizeof(de));
	de.inum = xshort(rootino);
	strcpy(de.name, "..");
	iappend(bin_inum, &de, sizeof(de));

	// create /dev folder
	inum = ialloc(T_DIR);
	bzero(&de, sizeof(de));
	de.inum = xshort(inum);
	strcpy(de.name, "dev");
	iappend(rootino, &de, sizeof(de));

	bzero(&de, sizeof(de));
	de.inum = xshort(inum);
	strcpy(de.name, ".");
	iappend(inum, &de, sizeof(de));

	bzero(&de, sizeof(de));
	de.inum = xshort(rootino);
	strcpy(de.name, "..");
	iappend(inum, &de, sizeof(de));

	// create /sbin folder
	sbin_inum = ialloc(T_DIR);
//.........这里部分代码省略.........
开发者ID:tim48134，项目名称:xylos，代码行数:101，代码来源:mkfs.c

示例15: iappend

void
iappend(uint inum, void *xp, int n)
{
  char *p = (char*)xp;
  uint fbn, off, n1;
  struct dinode din;
  char buf[512];
  uint indirect[512];
  uint x;
  
  rinode(inum, &din);
  
  int temp_fbn, d1, d2, k1, k2, k3, a1, a2, a3;
  off = xint(din.size);
  while(n > 0){
    //printf("%d\n", n);
    fbn = off / 512;
    //assert(fbn < MAXFILE);
    if(fbn < NDIRECT){
      //printf("hjw 1 %d\n", n);
      if(xint(din.addrs[fbn]) == 0){
        din.addrs[fbn] = xint(freeblock++);
        usedblocks++;
      }
      x = xint(din.addrs[fbn]);
    } else {
      
      temp_fbn = fbn;
      temp_fbn -= NDIRECT;
      d1 = temp_fbn / 128;
      k1 = temp_fbn % 128;
      d2 = d1 / 128;
      k2 = d1 % 128;
      //d3 = d2 / 128;
      k3 = d2 % 128;
      if((a1 = din.addrs[NDIRECT]) == 0)
      {
	 a1 = din.addrs[NDIRECT] = xint(freeblock++);
	 usedblocks ++;
      }
      rsect(xint(a1), (char*)indirect);
      if((a2 = indirect[k3]) == 0)
      {
	a2 = indirect[k3] = xint(freeblock++);
        usedblocks ++;
        wsect(xint(a1), (char*)indirect);
      }
      rsect(xint(a2), (char*)indirect);
      if((a3 = indirect[k2]) == 0)
      {
	a3 = indirect[k2] = xint(freeblock++);
        usedblocks ++;
        wsect(xint(a2), (char*)indirect);
      }
      rsect(xint(a3), (char*)indirect);
      if((x = indirect[k1]) == 0)
      {
	x = indirect[k1] = xint(freeblock++);
        usedblocks ++;
        wsect(xint(a3), (char*)indirect);
      }
      x = xint(x);
      //printf("%d--", fbn);
    }
    //printf("%d\n", x);
    n1 = min(n, (fbn + 1) * 512 - off);
    rsect(x, buf);
    //printf("hjw 2 %d %d %d %d\n", n, off - (fbn * 512), n1, sizeof(p));
    bcopy(p, buf + off - (fbn * 512), n1);
      //   printf("hjw 3 %d\n", n);
    wsect(x, buf);
    n -= n1;
    off += n1;
    p += n1;
  }
  din.size = xint(off);
  winode(inum, &din);
}
开发者ID:treejames，项目名称:xv6，代码行数:78，代码来源:mkfs.c


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