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It's no longer possible to remove or recreate a file that is opened with

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uncached access.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1928 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2002-11-14 00:21:04 +00:00
parent b334e2f00f
commit 601f33e246
1 changed files with 22 additions and 10 deletions
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src/add-ons/kernel/file_systems/bfs/Inode.cpp
+13 -1
View File
@@ -1621,6 +1621,12 @@ Inode::Remove(Transaction *transaction,const char *name,off_t *_id,bool isDirect
return B_ENTRY_NOT_FOUND; return B_ENTRY_NOT_FOUND;
} }
// You can't unlink a mounted or the VM file while it is being used - while
// this is not really necessary, it copies the behaviour of the original BFS
// and let you and me feel a little bit safer
if (inode->Flags() & INODE_NO_CACHE)
return B_NOT_ALLOWED;
// It's a bit stupid, but indices are regarded as directories // It's a bit stupid, but indices are regarded as directories
// in BFS - so a test for a directory always succeeds, but you // in BFS - so a test for a directory always succeeds, but you
// should really be able to do whatever you want with your indices // should really be able to do whatever you want with your indices
@@ -1682,7 +1688,8 @@ Inode::Remove(Transaction *transaction,const char *name,off_t *_id,bool isDirect
*/ */
status_t status_t
Inode::Create(Transaction *transaction,Inode *parent, const char *name, int32 mode, int omode, uint32 type, off_t *_id, Inode **_inode) Inode::Create(Transaction *transaction, Inode *parent, const char *name, int32 mode,
int omode, uint32 type, off_t *_id, Inode **_inode)
{ {
block_run parentRun = parent ? parent->BlockRun() : block_run::Run(0,0,0); block_run parentRun = parent ? parent->BlockRun() : block_run::Run(0,0,0);
Volume *volume = transaction->GetVolume(); Volume *volume = transaction->GetVolume();
@@ -1712,6 +1719,11 @@ Inode::Create(Transaction *transaction,Inode *parent, const char *name, int32 mo
if (inode->IsDirectory()) if (inode->IsDirectory())
return B_IS_A_DIRECTORY; return B_IS_A_DIRECTORY;
// if it is a mounted device or the VM file, we don't allow to delete it
// while it is open and in use
if (inode->Flags() & INODE_NO_CACHE)
return B_NOT_ALLOWED;
// if omode & O_TRUNC, truncate the existing file // if omode & O_TRUNC, truncate the existing file
if (omode & O_TRUNC) { if (omode & O_TRUNC) {
WriteLocked locked(inode->Lock()); WriteLocked locked(inode->Lock());