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8 cifs/smb3 fixes, most when specifying the multiuser mount flag, 5 of the fixes for stable.

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Merge tag '5.8-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Eight cifs/smb3 fixes, most when specifying the multiuser mount flag.

  Five of the fixes are for stable"

* tag '5.8-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: prevent truncation from long to int in wait_for_free_credits
  cifs: Fix the target file was deleted when rename failed.
  SMB3: Honor 'posix' flag for multiuser mounts
  SMB3: Honor 'handletimeout' flag for multiuser mounts
  SMB3: Honor lease disabling for multiuser mounts
  SMB3: Honor persistent/resilient handle flags for multiuser mounts
  SMB3: Honor 'seal' flag for multiuser mounts
  cifs: Display local UID details for SMB sessions in DebugData
This commit is contained in:
Linus Torvalds 2020-07-03 23:03:45 -07:00
commit b8e516b367
4 changed files with 20 additions and 8 deletions
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6
fs/cifs/cifs_debug.c
View File

@ -399,6 +399,10 @@ skip_rdma:
if (ses->sign)
seq_puts(m, " signed");
seq_printf(m, "\n\tUser: %d Cred User: %d",
from_kuid(&init_user_ns, ses->linux_uid),
from_kuid(&init_user_ns, ses->cred_uid));
if (ses->chan_count > 1) {
seq_printf(m, "\n\n\tExtra Channels: %zu\n",
ses->chan_count-1);
@ -406,7 +410,7 @@ skip_rdma:
cifs_dump_channel(m, j, &ses->chans[j]);
}
seq_puts(m, "\n\tShares:");
seq_puts(m, "\n\n\tShares:");
j = 0;
seq_printf(m, "\n\t%d) IPC: ", j);

10
fs/cifs/connect.c
View File

@ -5306,9 +5306,15 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
vol_info->nocase = master_tcon->nocase;
vol_info->nohandlecache = master_tcon->nohandlecache;
vol_info->local_lease = master_tcon->local_lease;
vol_info->no_lease = master_tcon->no_lease;
vol_info->resilient = master_tcon->use_resilient;
vol_info->persistent = master_tcon->use_persistent;
vol_info->handle_timeout = master_tcon->handle_timeout;
vol_info->no_linux_ext = !master_tcon->unix_ext;
vol_info->linux_ext = master_tcon->posix_extensions;
vol_info->sectype = master_tcon->ses->sectype;
vol_info->sign = master_tcon->ses->sign;
vol_info->seal = master_tcon->seal;
rc = cifs_set_vol_auth(vol_info, master_tcon->ses);
if (rc) {
@ -5334,10 +5340,6 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
goto out;
}
/* if new SMB3.11 POSIX extensions are supported do not remap / and \ */
if (tcon->posix_extensions)
cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS;
if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, vol_info);

10
fs/cifs/inode.c
View File

@ -2044,6 +2044,7 @@ cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
FILE_UNIX_BASIC_INFO *info_buf_target;
unsigned int xid;
int rc, tmprc;
bool new_target = d_really_is_negative(target_dentry);
if (flags & ~RENAME_NOREPLACE)
return -EINVAL;
@ -2120,8 +2121,13 @@ cifs_rename2(struct inode *source_dir, struct dentry *source_dentry,
*/
unlink_target:
/* Try unlinking the target dentry if it's not negative */
if (d_really_is_positive(target_dentry) && (rc == -EACCES || rc == -EEXIST)) {
/*
* If the target dentry was created during the rename, try
* unlinking it if it's not negative
*/
if (new_target &&
d_really_is_positive(target_dentry) &&
(rc == -EACCES || rc == -EEXIST)) {
if (d_is_dir(target_dentry))
tmprc = cifs_rmdir(target_dir, target_dentry);
else

2
fs/cifs/transport.c
View File

@ -523,7 +523,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits,
const int timeout, const int flags,
unsigned int *instance)
{
int rc;
long rc;
int *credits;
int optype;
long int t;