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-rw-r--r--fs/cifs/cifsglob.h7
-rw-r--r--fs/cifs/cifsproto.h5
-rw-r--r--fs/cifs/cifssmb.c3
-rw-r--r--fs/cifs/file.c19
-rw-r--r--fs/cifs/inode.c6
-rw-r--r--fs/cifs/smb1ops.c2
-rw-r--r--fs/cifs/smb2inode.c4
-rw-r--r--fs/cifs/smb2ops.c3
-rw-r--r--fs/cifs/smb2pdu.c1
9 files changed, 33 insertions, 17 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index de82cfa44b1a..0d956360e984 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1281,6 +1281,7 @@ struct cifs_fid {
__u64 volatile_fid; /* volatile file id for smb2 */
__u8 lease_key[SMB2_LEASE_KEY_SIZE]; /* lease key for smb2 */
__u8 create_guid[16];
+ __u32 access;
struct cifs_pending_open *pending_open;
unsigned int epoch;
#ifdef CONFIG_CIFS_DEBUG2
@@ -1741,6 +1742,12 @@ static inline bool is_retryable_error(int error)
return false;
}
+
+/* cifs_get_writable_file() flags */
+#define FIND_WR_ANY 0
+#define FIND_WR_FSUID_ONLY 1
+#define FIND_WR_WITH_DELETE 2
+
#define MID_FREE 0
#define MID_REQUEST_ALLOCATED 1
#define MID_REQUEST_SUBMITTED 2
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 89eaaf46d1ca..e5cb681ec138 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -134,11 +134,12 @@ extern bool backup_cred(struct cifs_sb_info *);
extern bool is_size_safe_to_change(struct cifsInodeInfo *, __u64 eof);
extern void cifs_update_eof(struct cifsInodeInfo *cifsi, loff_t offset,
unsigned int bytes_written);
-extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, bool);
+extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int);
extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode,
- bool fsuid_only,
+ int flags,
struct cifsFileInfo **ret_file);
extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
+ int flags,
struct cifsFileInfo **ret_file);
extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool);
extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 3c89569e7210..6f6fb3606a5d 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1492,6 +1492,7 @@ openRetry:
*oplock = rsp->OplockLevel;
/* cifs fid stays in le */
oparms->fid->netfid = rsp->Fid;
+ oparms->fid->access = desired_access;
/* Let caller know file was created so we can set the mode. */
/* Do we care about the CreateAction in any other cases? */
@@ -2115,7 +2116,7 @@ cifs_writev_requeue(struct cifs_writedata *wdata)
wdata2->tailsz = tailsz;
wdata2->bytes = cur_len;
- rc = cifs_get_writable_file(CIFS_I(inode), false,
+ rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY,
&wdata2->cfile);
if (!wdata2->cfile) {
cifs_dbg(VFS, "No writable handle to retry writepages rc=%d\n",
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index bc9516ab4b34..3b942ecdd4be 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1958,7 +1958,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode,
/* Return -EBADF if no handle is found and general rc otherwise */
int
-cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only,
+cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, int flags,
struct cifsFileInfo **ret_file)
{
struct cifsFileInfo *open_file, *inv_file = NULL;
@@ -1966,7 +1966,8 @@ cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only,
bool any_available = false;
int rc = -EBADF;
unsigned int refind = 0;
-
+ bool fsuid_only = flags & FIND_WR_FSUID_ONLY;
+ bool with_delete = flags & FIND_WR_WITH_DELETE;
*ret_file = NULL;
/*
@@ -1998,6 +1999,8 @@ refind_writable:
continue;
if (fsuid_only && !uid_eq(open_file->uid, current_fsuid()))
continue;
+ if (with_delete && !(open_file->fid.access & DELETE))
+ continue;
if (OPEN_FMODE(open_file->f_flags) & FMODE_WRITE) {
if (!open_file->invalidHandle) {
/* found a good writable file */
@@ -2045,12 +2048,12 @@ refind_writable:
}
struct cifsFileInfo *
-find_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only)
+find_writable_file(struct cifsInodeInfo *cifs_inode, int flags)
{
struct cifsFileInfo *cfile;
int rc;
- rc = cifs_get_writable_file(cifs_inode, fsuid_only, &cfile);
+ rc = cifs_get_writable_file(cifs_inode, flags, &cfile);
if (rc)
cifs_dbg(FYI, "couldn't find writable handle rc=%d", rc);
@@ -2059,6 +2062,7 @@ find_writable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only)
int
cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
+ int flags,
struct cifsFileInfo **ret_file)
{
struct list_head *tmp;
@@ -2085,7 +2089,7 @@ cifs_get_writable_path(struct cifs_tcon *tcon, const char *name,
kfree(full_path);
cinode = CIFS_I(d_inode(cfile->dentry));
spin_unlock(&tcon->open_file_lock);
- return cifs_get_writable_file(cinode, 0, ret_file);
+ return cifs_get_writable_file(cinode, flags, ret_file);
}
spin_unlock(&tcon->open_file_lock);
@@ -2162,7 +2166,8 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
if (mapping->host->i_size - offset < (loff_t)to)
to = (unsigned)(mapping->host->i_size - offset);
- rc = cifs_get_writable_file(CIFS_I(mapping->host), false, &open_file);
+ rc = cifs_get_writable_file(CIFS_I(mapping->host), FIND_WR_ANY,
+ &open_file);
if (!rc) {
bytes_written = cifs_write(open_file, open_file->pid,
write_data, to - from, &offset);
@@ -2355,7 +2360,7 @@ retry:
if (cfile)
cifsFileInfo_put(cfile);
- rc = cifs_get_writable_file(CIFS_I(inode), false, &cfile);
+ rc = cifs_get_writable_file(CIFS_I(inode), FIND_WR_ANY, &cfile);
/* in case of an error store it to return later */
if (rc)
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 1c6f659110d0..49dbf11e2c3f 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2282,7 +2282,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
* writebehind data than the SMB timeout for the SetPathInfo
* request would allow
*/
- open_file = find_writable_file(cifsInode, true);
+ open_file = find_writable_file(cifsInode, FIND_WR_FSUID_ONLY);
if (open_file) {
tcon = tlink_tcon(open_file->tlink);
server = tcon->ses->server;
@@ -2432,7 +2432,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
args->ctime = NO_CHANGE_64;
args->device = 0;
- open_file = find_writable_file(cifsInode, true);
+ open_file = find_writable_file(cifsInode, FIND_WR_FSUID_ONLY);
if (open_file) {
u16 nfid = open_file->fid.netfid;
u32 npid = open_file->pid;
@@ -2535,7 +2535,7 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
rc = 0;
if (attrs->ia_valid & ATTR_MTIME) {
- rc = cifs_get_writable_file(cifsInode, false, &wfile);
+ rc = cifs_get_writable_file(cifsInode, FIND_WR_ANY, &wfile);
if (!rc) {
tcon = tlink_tcon(wfile->tlink);
rc = tcon->ses->server->ops->flush(xid, tcon, &wfile->fid);
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index eb994e313c6a..b130efaf8feb 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -766,7 +766,7 @@ smb_set_file_info(struct inode *inode, const char *full_path,
struct cifs_tcon *tcon;
/* if the file is already open for write, just use that fileid */
- open_file = find_writable_file(cinode, true);
+ open_file = find_writable_file(cinode, FIND_WR_FSUID_ONLY);
if (open_file) {
fid.netfid = open_file->fid.netfid;
netpid = open_file->pid;
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index 1cf207564ff9..a8c301ae00ed 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -521,7 +521,7 @@ smb2_mkdir_setinfo(struct inode *inode, const char *name,
cifs_i = CIFS_I(inode);
dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
data.Attributes = cpu_to_le32(dosattrs);
- cifs_get_writable_path(tcon, name, &cfile);
+ cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
FILE_WRITE_ATTRIBUTES, FILE_CREATE,
CREATE_NOT_FILE, ACL_NO_MODE,
@@ -577,7 +577,7 @@ smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
{
struct cifsFileInfo *cfile;
- cifs_get_writable_path(tcon, from_name, &cfile);
+ cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
return smb2_set_path_attr(xid, tcon, from_name, to_name,
cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index e47190cae163..c31e84ee3c39 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1364,6 +1364,7 @@ smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
cfile->fid.persistent_fid = fid->persistent_fid;
cfile->fid.volatile_fid = fid->volatile_fid;
+ cfile->fid.access = fid->access;
#ifdef CONFIG_CIFS_DEBUG2
cfile->fid.mid = fid->mid;
#endif /* CIFS_DEBUG2 */
@@ -3327,7 +3328,7 @@ static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offs
* some servers (Windows2016) will not reflect recent writes in
* QUERY_ALLOCATED_RANGES until SMB2_flush is called.
*/
- wrcfile = find_writable_file(cifsi, false);
+ wrcfile = find_writable_file(cifsi, FIND_WR_ANY);
if (wrcfile) {
filemap_write_and_wait(inode->i_mapping);
smb2_flush_file(xid, tcon, &wrcfile->fid);
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 1234f9ccab03..28c0be5e69b7 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2771,6 +2771,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
atomic_inc(&tcon->num_remote_opens);
oparms->fid->persistent_fid = rsp->PersistentFileId;
oparms->fid->volatile_fid = rsp->VolatileFileId;
+ oparms->fid->access = oparms->desired_access;
#ifdef CONFIG_CIFS_DEBUG2
oparms->fid->mid = le64_to_cpu(rsp->sync_hdr.MessageId);
#endif /* CIFS_DEBUG2 */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.