本文整理汇总了Golang中github.com/jnwhiteh/minixfs/common.Inode.Size方法的典型用法代码示例。如果您正苦于以下问题：Golang Inode.Size方法的具体用法？Golang Inode.Size怎么用？Golang Inode.Size使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/jnwhiteh/minixfs/common.Inode的用法示例。
在下文中一共展示了Inode.Size方法的1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Golang代码示例。
示例1: search_dir
func search_dir(dirp *common.Inode, path string, inum *int, op dirop) error {
// TODO: Check permissions (see minix source)
devinfo := dirp.Devinfo
blocksize := devinfo.Blocksize
// step through the directory on block at a time
var bp *common.CacheBlock
var dp *common.Disk_dirent
old_slots := int(dirp.Size / common.DIR_ENTRY_SIZE)
new_slots := 0
e_hit := false
match := false
extended := false
for pos := 0; pos < int(dirp.Size); pos += blocksize {
b := common.ReadMap(dirp, pos, dirp.Bcache) // get block number
if dirp.Bcache == nil {
panic(fmt.Sprintf("No block cache: %q", dirp))
}
bp = dirp.Bcache.GetBlock(devinfo.Devnum, b, common.DIRECTORY_BLOCK, common.NORMAL)
if bp == nil {
panic("get_block returned NO_BLOCK")
}
// Search the directory block
dirarr := bp.Block.(common.DirectoryBlock)
for i := 0; i < len(dirarr); i++ {
dp = &dirarr[i]
new_slots++
if new_slots > old_slots { // not found, but room left
if op == ENTER {
e_hit = true
}
break
}
// Match occurs if string found
if op != ENTER && dp.Inum != 0 {
if op == IS_EMPTY {
// If this succeeds, dir is not empty
if !dp.HasName(".") && !dp.HasName("..") {
log.Printf("Found entry: %s (%d)", dp.String(), dp.Inum)
match = true
}
} else {
if dp.HasName(path) {
match = true
}
}
}
if match {
var r error = nil
// LOOK_UP or DELETE found what it wanted
if op == IS_EMPTY {
r = common.ENOTEMPTY
} else if op == DELETE {
// TODO: Save inode for recovery
dp.Inum = 0 // erase entry
bp.Dirty = true
dirp.Dirty = true
} else {
*inum = int(dp.Inum)
}
dirp.Bcache.PutBlock(bp, common.DIRECTORY_BLOCK)
return r
}
// Check for free slot for the benefit of ENTER
if op == ENTER && dp.Inum == 0 {
e_hit = true // we found a free slot
break
}
}
// The whole block has been searched or ENTER has a free slot
if e_hit { // e_hit set if ENTER can be performed now
break
}
dirp.Bcache.PutBlock(bp, common.DIRECTORY_BLOCK) // otherwise continue searching dir
}
// The whole directory has now been searched
if op != ENTER {
if op == IS_EMPTY {
return nil
} else {
return common.ENOENT
}
}
// This call is for ENTER. If no free slot has been found so far, try to
// extend directory.
if !e_hit { // directory is full and no room left in last block
new_slots++ // increase directory size by 1 entry
// TODO: Does this rely on overflow? Does it work?
if new_slots == 0 { // dir size limited by slot count (overflow?)
return common.EFBIG
}
var err error
//.........这里部分代码省略.........