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symlink.go
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symlink.go
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// Copyright (c) 2015-2021, NVIDIA CORPORATION.
// SPDX-License-Identifier: Apache-2.0
package inode
import (
"fmt"
"github.com/swiftstack/ProxyFS/logger"
"github.com/swiftstack/ProxyFS/stats"
)
func (vS *volumeStruct) CreateSymlink(target string, filePerm InodeMode, userID InodeUserID, groupID InodeGroupID) (symlinkInodeNumber InodeNumber, err error) {
err = enforceRWMode(false)
if nil != err {
return
}
// Create file mode out of file permissions plus inode type
fileMode, err := determineMode(filePerm, SymlinkType)
if err != nil {
return
}
symlinkInode, err := vS.makeInMemoryInode(SymlinkType, fileMode, userID, groupID)
if err != nil {
return
}
symlinkInode.dirty = true
symlinkInode.SymlinkTarget = target
symlinkInodeNumber = symlinkInode.InodeNumber
ok, err := vS.inodeCacheInsert(symlinkInode)
if nil != err {
return
}
if !ok {
err = fmt.Errorf("inodeCacheInsert(symlinkInode) failed")
return
}
err = vS.flushInode(symlinkInode)
if err != nil {
logger.ErrorWithError(err)
return
}
stats.IncrementOperations(&stats.SymlinkCreateOps)
return
}
func (vS *volumeStruct) GetSymlink(symlinkInodeNumber InodeNumber) (target string, err error) {
symlinkInode, err := vS.fetchInodeType(symlinkInodeNumber, SymlinkType)
if err != nil {
logger.ErrorWithError(err)
return
}
target = symlinkInode.SymlinkTarget
stats.IncrementOperations(&stats.SymlinkReadOps)
return
}