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smb: client: ignore unhandled reparse tags

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[ Upstream commit ec68680411 ]

Just ignore reparse points that the client can't parse rather than
bailing out and not opening the file or directory.

Reported-by: Marc <1marc1@gmail.com>
Closes: https://lore.kernel.org/r/CAMHwNVv-B+Q6wa0FEXrAuzdchzcJRsPKDDRrNaYZJd6X-+iJzw@mail.gmail.com
Fixes: 539aad7f14 ("smb: client: introduce ->parse_reparse_point()")
Tested-by: Anthony Nandaa (Microsoft) <profnandaa@gmail.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paulo Alcantara 2024-08-21 00:45:03 -03:00 committed by Greg Kroah-Hartman
parent cac2815f49
commit 0fa4b4aadb
1 changed files with 7 additions and 4 deletions
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11
fs/smb/client/reparse.c
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@ -378,6 +378,8 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
u32 plen, struct cifs_sb_info *cifs_sb,
bool unicode, struct cifs_open_info_data *data)
{
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
data->reparse.buf = buf;
/* See MS-FSCC 2.1.2 */
@ -394,12 +396,13 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
case IO_REPARSE_TAG_LX_FIFO:
case IO_REPARSE_TAG_LX_CHR:
case IO_REPARSE_TAG_LX_BLK:
return 0;
break;
default:
cifs_dbg(VFS, "%s: unhandled reparse tag: 0x%08x\n",
__func__, le32_to_cpu(buf->ReparseTag));
return -EOPNOTSUPP;
cifs_tcon_dbg(VFS | ONCE, "unhandled reparse tag: 0x%08x\n",
le32_to_cpu(buf->ReparseTag));
break;
}
return 0;
}
int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,