Haiku/haiku
Haiku/haiku
1
0
Fork 0
mirror of https://review.haiku-os.org/haiku synced 2025-01-18 12:38:51 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

ramfs: A write lock is needed when truncating files.

Browse Source 
Should fix all KDLs in #19360.
This commit is contained in:
Augustin Cavalier 2025-01-16 23:21:47 -05:00
parent 48bfa9ee2f
commit c9892ac20f
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/add-ons/kernel/file_systems/ramfs/kernel_interface.cpp
View File

@ -952,8 +952,8 @@ ramfs_open(fs_volume* _volume, fs_vnode* _node, int openMode, void** _cookie)
FUNCTION(("node: %lld\n", node->GetID()));
VolumeReadLocker locker(volume);
if (!locker.IsLocked())
VolumeReadLocker readLocker(volume);
if (!readLocker.IsLocked())
RETURN_ERROR(B_ERROR);
status_t error = B_OK;
@ -974,10 +974,16 @@ ramfs_open(fs_volume* _volume, fs_vnode* _node, int openMode, void** _cookie)
if (!cookie)
SET_ERROR(error, B_NO_MEMORY);
}
readLocker.Unlock();
// truncate if requested
if (error == B_OK && (openMode & O_TRUNC))
if (error == B_OK && (openMode & O_TRUNC)) {
VolumeWriteLocker writeLocker(volume);
error = node->SetSize(0);
NodeMTimeUpdater mTimeUpdater(node);
NodeMTimeUpdater mTimeUpdater(node);
}
// set result / cleanup on failure
if (error == B_OK)
*_cookie = cookie;