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Kernel: Allow passing initial UID and GID when creating new inodes

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If we're creating something that should have a different owner than the
current process's UID/GID, we need to plumb that all the way through
VFS down to the FS functions.
This commit is contained in:
Andreas Kling 2020-01-03 20:13:21 +01:00
parent 82760998a9
commit 4abbedb6e4
11 changed files with 41 additions and 33 deletions
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10
Kernel/FileSystem/Ext2FileSystem.cpp
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@ -1284,7 +1284,7 @@ bool Ext2FS::set_block_allocation_state(BlockIndex block_index, bool new_state)
return true;
}
RefPtr<Inode> Ext2FS::create_directory(InodeIdentifier parent_id, const String& name, mode_t mode, int& error)
RefPtr<Inode> Ext2FS::create_directory(InodeIdentifier parent_id, const String& name, mode_t mode, uid_t uid, gid_t gid, int& error)
{
LOCKER(m_lock);
ASSERT(parent_id.fsid() == fsid());
@ -1296,7 +1296,7 @@ RefPtr<Inode> Ext2FS::create_directory(InodeIdentifier parent_id, const String&
// NOTE: When creating a new directory, make the size 1 block.
// There's probably a better strategy here, but this works for now.
auto inode = create_inode(parent_id, name, mode, block_size(), 0, error);
auto inode = create_inode(parent_id, name, mode, block_size(), 0, uid, gid, error);
if (!inode)
return nullptr;
@ -1328,7 +1328,7 @@ RefPtr<Inode> Ext2FS::create_directory(InodeIdentifier parent_id, const String&
return inode;
}
RefPtr<Inode> Ext2FS::create_inode(InodeIdentifier parent_id, const String& name, mode_t mode, off_t size, dev_t dev, int& error)
RefPtr<Inode> Ext2FS::create_inode(InodeIdentifier parent_id, const String& name, mode_t mode, off_t size, dev_t dev, uid_t uid, gid_t gid, int& error)
{
LOCKER(m_lock);
ASSERT(parent_id.fsid() == fsid());
@ -1378,8 +1378,8 @@ RefPtr<Inode> Ext2FS::create_inode(InodeIdentifier parent_id, const String& name
ext2_inode e2inode;
memset(&e2inode, 0, sizeof(ext2_inode));
e2inode.i_mode = mode;
e2inode.i_uid = current->process().euid();
e2inode.i_gid = current->process().egid();
e2inode.i_uid = uid;
e2inode.i_gid = gid;
e2inode.i_size = size;
e2inode.i_atime = now.tv_sec;
e2inode.i_ctime = now.tv_sec;