6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ralph Boehme <slow@xxxxxxxxx>
commit 6a832bc8bbb22350f7ffe6ecb2d36f261bb96023 upstream.
Fixes special files against current Samba.
On the Samba server:
insgesamt 20
131958 brw-r--r-- 1 root root 0, 0 15. Nov 12:04 blockdev
131965 crw-r--r-- 1 root root 1, 1 15. Nov 12:04 chardev
131966 prw-r--r-- 1 samba samba 0 15. Nov 12:05 fifo
131953 -rw-rwxrw-+ 2 samba samba 4 18. Nov 11:37 file
131953 -rw-rwxrw-+ 2 samba samba 4 18. Nov 11:37 hardlink
131957 lrwxrwxrwx 1 samba samba 4 15. Nov 12:03 symlink -> file
131954 -rwxrwxr-x+ 1 samba samba 0 18. Nov 15:28 symlinkoversmb
Before:
ls: cannot access '/mnt/smb3unix/posix/blockdev': No data available
ls: cannot access '/mnt/smb3unix/posix/chardev': No data available
ls: cannot access '/mnt/smb3unix/posix/symlinkoversmb': No data available
ls: cannot access '/mnt/smb3unix/posix/fifo': No data available
ls: cannot access '/mnt/smb3unix/posix/symlink': No data available
total 16
? -????????? ? ? ? ? ? blockdev
? -????????? ? ? ? ? ? chardev
? -????????? ? ? ? ? ? fifo
131953 -rw-rwxrw- 2 root samba 4 Nov 18 11:37 file
131953 -rw-rwxrw- 2 root samba 4 Nov 18 11:37 hardlink
? -????????? ? ? ? ? ? symlink
? -????????? ? ? ? ? ? symlinkoversmb
After:
insgesamt 21
131958 brw-r--r-- 1 root root 0, 0 15. Nov 12:04 blockdev
131965 crw-r--r-- 1 root root 1, 1 15. Nov 12:04 chardev
131966 prw-r--r-- 1 root samba 0 15. Nov 12:05 fifo
131953 -rw-rwxrw- 2 root samba 4 18. Nov 11:37 file
131953 -rw-rwxrw- 2 root samba 4 18. Nov 11:37 hardlink
131957 lrwxrwxrwx 1 root samba 4 15. Nov 12:03 symlink -> file
131954 lrwxrwxr-x 1 root samba 23 18. Nov 15:28 symlinkoversmb -> mnt/smb3unix/posix/file
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: Paulo Alcantara (Red Hat) <pc@xxxxxxxxxxxxx>
Signed-off-by: Ralph Boehme <slow@xxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/smb/client/cifsproto.h | 1
fs/smb/client/inode.c | 89 +++++++++++++++++++++++++++++++++++++++++-----
fs/smb/client/readdir.c | 35 ++++++++----------
fs/smb/client/reparse.c | 84 ++++++++++++++++++++++++++-----------------
4 files changed, 149 insertions(+), 60 deletions(-)
--- a/fs/smb/client/cifsproto.h
+++ b/fs/smb/client/cifsproto.h
@@ -677,6 +677,7 @@ int __cifs_sfu_make_node(unsigned int xi
int cifs_sfu_make_node(unsigned int xid, struct inode *inode,
struct dentry *dentry, struct cifs_tcon *tcon,
const char *full_path, umode_t mode, dev_t dev);
+umode_t wire_mode_to_posix(u32 wire);
#ifdef CONFIG_CIFS_DFS_UPCALL
static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses,
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -724,6 +724,84 @@ static int cifs_sfu_mode(struct cifs_fat
#endif
}
+#define POSIX_TYPE_FILE 0
+#define POSIX_TYPE_DIR 1
+#define POSIX_TYPE_SYMLINK 2
+#define POSIX_TYPE_CHARDEV 3
+#define POSIX_TYPE_BLKDEV 4
+#define POSIX_TYPE_FIFO 5
+#define POSIX_TYPE_SOCKET 6
+
+#define POSIX_X_OTH 0000001
+#define POSIX_W_OTH 0000002
+#define POSIX_R_OTH 0000004
+#define POSIX_X_GRP 0000010
+#define POSIX_W_GRP 0000020
+#define POSIX_R_GRP 0000040
+#define POSIX_X_USR 0000100
+#define POSIX_W_USR 0000200
+#define POSIX_R_USR 0000400
+#define POSIX_STICKY 0001000
+#define POSIX_SET_GID 0002000
+#define POSIX_SET_UID 0004000
+
+#define POSIX_OTH_MASK 0000007
+#define POSIX_GRP_MASK 0000070
+#define POSIX_USR_MASK 0000700
+#define POSIX_PERM_MASK 0000777
+#define POSIX_FILETYPE_MASK 0070000
+
+#define POSIX_FILETYPE_SHIFT 12
+
+static u32 wire_perms_to_posix(u32 wire)
+{
+ u32 mode = 0;
+
+ mode |= (wire & POSIX_X_OTH) ? S_IXOTH : 0;
+ mode |= (wire & POSIX_W_OTH) ? S_IWOTH : 0;
+ mode |= (wire & POSIX_R_OTH) ? S_IROTH : 0;
+ mode |= (wire & POSIX_X_GRP) ? S_IXGRP : 0;
+ mode |= (wire & POSIX_W_GRP) ? S_IWGRP : 0;
+ mode |= (wire & POSIX_R_GRP) ? S_IRGRP : 0;
+ mode |= (wire & POSIX_X_USR) ? S_IXUSR : 0;
+ mode |= (wire & POSIX_W_USR) ? S_IWUSR : 0;
+ mode |= (wire & POSIX_R_USR) ? S_IRUSR : 0;
+ mode |= (wire & POSIX_STICKY) ? S_ISVTX : 0;
+ mode |= (wire & POSIX_SET_GID) ? S_ISGID : 0;
+ mode |= (wire & POSIX_SET_UID) ? S_ISUID : 0;
+
+ return mode;
+}
+
+static u32 posix_filetypes[] = {
+ S_IFREG,
+ S_IFDIR,
+ S_IFLNK,
+ S_IFCHR,
+ S_IFBLK,
+ S_IFIFO,
+ S_IFSOCK
+};
+
+static u32 wire_filetype_to_posix(u32 wire_type)
+{
+ if (wire_type >= ARRAY_SIZE(posix_filetypes)) {
+ pr_warn("Unexpected type %u", wire_type);
+ return 0;
+ }
+ return posix_filetypes[wire_type];
+}
+
+umode_t wire_mode_to_posix(u32 wire)
+{
+ u32 wire_type;
+ u32 mode;
+
+ wire_type = (wire & POSIX_FILETYPE_MASK) >> POSIX_FILETYPE_SHIFT;
+ mode = (wire_perms_to_posix(wire) | wire_filetype_to_posix(wire_type));
+ return (umode_t)mode;
+}
+
/* Fill a cifs_fattr struct with info from POSIX info struct */
static void smb311_posix_info_to_fattr(struct cifs_fattr *fattr,
struct cifs_open_info_data *data,
@@ -760,20 +838,13 @@ static void smb311_posix_info_to_fattr(s
fattr->cf_bytes = le64_to_cpu(info->AllocationSize);
fattr->cf_createtime = le64_to_cpu(info->CreationTime);
fattr->cf_nlink = le32_to_cpu(info->HardLinks);
- fattr->cf_mode = (umode_t) le32_to_cpu(info->Mode);
+ fattr->cf_mode = wire_mode_to_posix(le32_to_cpu(info->Mode));
if (cifs_open_data_reparse(data) &&
cifs_reparse_point_to_fattr(cifs_sb, fattr, data))
goto out_reparse;
- fattr->cf_mode &= ~S_IFMT;
- if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
- fattr->cf_mode |= S_IFDIR;
- fattr->cf_dtype = DT_DIR;
- } else { /* file */
- fattr->cf_mode |= S_IFREG;
- fattr->cf_dtype = DT_REG;
- }
+ fattr->cf_dtype = S_DT(fattr->cf_mode);
out_reparse:
if (S_ISLNK(fattr->cf_mode)) {
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -241,31 +241,28 @@ cifs_posix_to_fattr(struct cifs_fattr *f
fattr->cf_nlink = le32_to_cpu(info->HardLinks);
fattr->cf_cifsattrs = le32_to_cpu(info->DosAttributes);
- /*
- * Since we set the inode type below we need to mask off
- * to avoid strange results if bits set above.
- * XXX: why not make server&client use the type bits?
- */
- fattr->cf_mode = le32_to_cpu(info->Mode) & ~S_IFMT;
+ if (fattr->cf_cifsattrs & ATTR_REPARSE)
+ fattr->cf_cifstag = le32_to_cpu(info->ReparseTag);
+
+ /* The Mode field in the response can now include the file type as well */
+ fattr->cf_mode = wire_mode_to_posix(le32_to_cpu(info->Mode));
+ fattr->cf_dtype = S_DT(le32_to_cpu(info->Mode));
+
+ switch (fattr->cf_mode & S_IFMT) {
+ case S_IFLNK:
+ case S_IFBLK:
+ case S_IFCHR:
+ fattr->cf_flags |= CIFS_FATTR_NEED_REVAL;
+ break;
+ default:
+ break;
+ }
cifs_dbg(FYI, "posix fattr: dev %d, reparse %d, mode %o\n",
le32_to_cpu(info->DeviceId),
le32_to_cpu(info->ReparseTag),
le32_to_cpu(info->Mode));
- if (fattr->cf_cifsattrs & ATTR_DIRECTORY) {
- fattr->cf_mode |= S_IFDIR;
- fattr->cf_dtype = DT_DIR;
- } else {
- /*
- * mark anything that is not a dir as regular
- * file. special files should have the REPARSE
- * attribute and will be marked as needing revaluation
- */
- fattr->cf_mode |= S_IFREG;
- fattr->cf_dtype = DT_REG;
- }
-
sid_to_id(cifs_sb, &parsed.owner, fattr, SIDOWNER);
sid_to_id(cifs_sb, &parsed.group, fattr, SIDGROUP);
}
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -730,44 +730,60 @@ out:
fattr->cf_dtype = S_DT(fattr->cf_mode);
}
-bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
- struct cifs_fattr *fattr,
- struct cifs_open_info_data *data)
+static bool posix_reparse_to_fattr(struct cifs_sb_info *cifs_sb,
+ struct cifs_fattr *fattr,
+ struct cifs_open_info_data *data)
{
struct reparse_posix_data *buf = data->reparse.posix;
- u32 tag = data->reparse.tag;
- if (tag == IO_REPARSE_TAG_NFS && buf) {
- if (le16_to_cpu(buf->ReparseDataLength) < sizeof(buf->InodeType))
+
+ if (buf == NULL)
+ return true;
+
+ if (le16_to_cpu(buf->ReparseDataLength) < sizeof(buf->InodeType)) {
+ WARN_ON_ONCE(1);
+ return false;
+ }
+
+ switch (le64_to_cpu(buf->InodeType)) {
+ case NFS_SPECFILE_CHR:
+ if (le16_to_cpu(buf->ReparseDataLength) != sizeof(buf->InodeType) + 8) {
+ WARN_ON_ONCE(1);
return false;
- switch (le64_to_cpu(buf->InodeType)) {
- case NFS_SPECFILE_CHR:
- if (le16_to_cpu(buf->ReparseDataLength) != sizeof(buf->InodeType) + 8)
- return false;
- fattr->cf_mode |= S_IFCHR;
- fattr->cf_rdev = reparse_mkdev(buf->DataBuffer);
- break;
- case NFS_SPECFILE_BLK:
- if (le16_to_cpu(buf->ReparseDataLength) != sizeof(buf->InodeType) + 8)
- return false;
- fattr->cf_mode |= S_IFBLK;
- fattr->cf_rdev = reparse_mkdev(buf->DataBuffer);
- break;
- case NFS_SPECFILE_FIFO:
- fattr->cf_mode |= S_IFIFO;
- break;
- case NFS_SPECFILE_SOCK:
- fattr->cf_mode |= S_IFSOCK;
- break;
- case NFS_SPECFILE_LNK:
- fattr->cf_mode |= S_IFLNK;
- break;
- default:
+ }
+ fattr->cf_mode |= S_IFCHR;
+ fattr->cf_rdev = reparse_mkdev(buf->DataBuffer);
+ break;
+ case NFS_SPECFILE_BLK:
+ if (le16_to_cpu(buf->ReparseDataLength) != sizeof(buf->InodeType) + 8) {
WARN_ON_ONCE(1);
return false;
}
- goto out;
+ fattr->cf_mode |= S_IFBLK;
+ fattr->cf_rdev = reparse_mkdev(buf->DataBuffer);
+ break;
+ case NFS_SPECFILE_FIFO:
+ fattr->cf_mode |= S_IFIFO;
+ break;
+ case NFS_SPECFILE_SOCK:
+ fattr->cf_mode |= S_IFSOCK;
+ break;
+ case NFS_SPECFILE_LNK:
+ fattr->cf_mode |= S_IFLNK;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return false;
}
+ return true;
+}
+
+bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
+ struct cifs_fattr *fattr,
+ struct cifs_open_info_data *data)
+{
+ u32 tag = data->reparse.tag;
+ bool ok;
switch (tag) {
case IO_REPARSE_TAG_INTERNAL:
@@ -787,15 +803,19 @@ bool cifs_reparse_point_to_fattr(struct
case IO_REPARSE_TAG_LX_BLK:
wsl_to_fattr(data, cifs_sb, tag, fattr);
break;
+ case IO_REPARSE_TAG_NFS:
+ ok = posix_reparse_to_fattr(cifs_sb, fattr, data);
+ if (!ok)
+ return false;
+ break;
case 0: /* SMB1 symlink */
case IO_REPARSE_TAG_SYMLINK:
- case IO_REPARSE_TAG_NFS:
fattr->cf_mode |= S_IFLNK;
break;
default:
return false;
}
-out:
+
fattr->cf_dtype = S_DT(fattr->cf_mode);
return true;
}
