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SMB3: Clean up query symlink when reparse point

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Two of the common symlink formats use reparse points
(unlike mfsymlinks and also unlike the SMB1 posix
extensions).  This is the first part of the fixes
to allow these reparse points (NFS style and Windows
symlinks) to be resolved properly as symlinks by the
client.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Ronnie Sahlberg
2019-04-10 08:44:46 +10:00
committed by Steve French
parent 6a54b2e002
commit ebaf546a55
4 changed files with 118 additions and 17 deletions
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9
fs/cifs/smb1ops.c
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@@ -950,8 +950,8 @@ cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
static int
cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
const char *full_path, char **target_path,
struct cifs_sb_info *cifs_sb)
struct cifs_sb_info *cifs_sb, const char *full_path,
char **target_path, bool is_reparse_point)
{
int rc;
int oplock = 0;
@@ -960,6 +960,11 @@ cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
if (is_reparse_point) {
cifs_dbg(VFS, "reparse points not handled for SMB1 symlinks\n");
return -EOPNOTSUPP;
}
/* Check for unix extensions */
if (cap_unix(tcon->ses)) {
rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, target_path,