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path: root/fs/cifs/smb2inode.c
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Diffstat (limited to 'fs/cifs/smb2inode.c')
-rw-r--r--fs/cifs/smb2inode.c243
1 files changed, 183 insertions, 60 deletions
diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index a8c301ae00ed..eba01d0908dd 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -47,6 +47,18 @@ free_set_inf_compound(struct smb_rqst *rqst)
}
+struct cop_vars {
+ struct cifs_open_parms oparms;
+ struct kvec rsp_iov[3];
+ struct smb_rqst rqst[3];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qi_iov[1];
+ struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
+ struct kvec close_iov[1];
+ struct smb2_file_rename_info rename_info;
+ struct smb2_file_link_info link_info;
+};
+
static int
smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb, const char *full_path,
@@ -54,35 +66,36 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
__u32 create_options, umode_t mode, void *ptr, int command,
struct cifsFileInfo *cfile)
{
+ struct cop_vars *vars = NULL;
+ struct kvec *rsp_iov;
+ struct smb_rqst *rqst;
int rc;
__le16 *utf16_path = NULL;
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
- struct cifs_open_parms oparms;
struct cifs_fid fid;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server;
int num_rqst = 0;
- struct smb_rqst rqst[3];
int resp_buftype[3];
- struct kvec rsp_iov[3];
- struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
- struct kvec qi_iov[1];
- struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
- struct kvec close_iov[1];
struct smb2_query_info_rsp *qi_rsp = NULL;
int flags = 0;
__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
unsigned int size[2];
void *data[2];
- struct smb2_file_rename_info rename_info;
- struct smb2_file_link_info link_info;
int len;
+ vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
+ if (vars == NULL)
+ return -ENOMEM;
+ rqst = &vars->rqst[0];
+ rsp_iov = &vars->rsp_iov[0];
+
+ server = cifs_pick_channel(ses);
+
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
- memset(rqst, 0, sizeof(rqst));
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
- memset(rsp_iov, 0, sizeof(rsp_iov));
/* We already have a handle so we can skip the open */
if (cfile)
@@ -95,19 +108,19 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
goto finished;
}
- memset(&oparms, 0, sizeof(struct cifs_open_parms));
- oparms.tcon = tcon;
- oparms.desired_access = desired_access;
- oparms.disposition = create_disposition;
- oparms.create_options = cifs_create_options(cifs_sb, create_options);
- oparms.fid = &fid;
- oparms.reconnect = false;
- oparms.mode = mode;
-
- memset(&open_iov, 0, sizeof(open_iov));
- rqst[num_rqst].rq_iov = open_iov;
+ vars->oparms.tcon = tcon;
+ vars->oparms.desired_access = desired_access;
+ vars->oparms.disposition = create_disposition;
+ vars->oparms.create_options = cifs_create_options(cifs_sb, create_options);
+ vars->oparms.fid = &fid;
+ vars->oparms.reconnect = false;
+ vars->oparms.mode = mode;
+ vars->oparms.cifs_sb = cifs_sb;
+
+ rqst[num_rqst].rq_iov = &vars->open_iov[0];
rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
- rc = SMB2_open_init(tcon, &rqst[num_rqst], &oplock, &oparms,
+ rc = SMB2_open_init(tcon, server,
+ &rqst[num_rqst], &oplock, &vars->oparms,
utf16_path);
kfree(utf16_path);
if (rc)
@@ -121,12 +134,12 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
/* Operation */
switch (command) {
case SMB2_OP_QUERY_INFO:
- memset(&qi_iov, 0, sizeof(qi_iov));
- rqst[num_rqst].rq_iov = qi_iov;
+ rqst[num_rqst].rq_iov = &vars->qi_iov[0];
rqst[num_rqst].rq_nvec = 1;
if (cfile)
- rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FILE_ALL_INFORMATION,
@@ -134,10 +147,11 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
else {
- rc = SMB2_query_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID,
COMPOUND_FID,
- FILE_ALL_INFORMATION,
+ FILE_ALL_INFORMATION,
SMB2_O_INFO_FILE, 0,
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
@@ -153,6 +167,40 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
full_path);
break;
+ case SMB2_OP_POSIX_QUERY_INFO:
+ rqst[num_rqst].rq_iov = &vars->qi_iov[0];
+ rqst[num_rqst].rq_nvec = 1;
+
+ if (cfile)
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
+ cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid,
+ SMB_FIND_FILE_POSIX_INFO,
+ SMB2_O_INFO_FILE, 0,
+ /* TBD: fix following to allow for longer SIDs */
+ sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
+ (sizeof(struct cifs_sid) * 2), 0, NULL);
+ else {
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[num_rqst],
+ COMPOUND_FID,
+ COMPOUND_FID,
+ SMB_FIND_FILE_POSIX_INFO,
+ SMB2_O_INFO_FILE, 0,
+ sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
+ (sizeof(struct cifs_sid) * 2), 0, NULL);
+ if (!rc) {
+ smb2_set_next_command(tcon, &rqst[num_rqst]);
+ smb2_set_related(&rqst[num_rqst]);
+ }
+ }
+
+ if (rc)
+ goto finished;
+ num_rqst++;
+ trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
+ break;
case SMB2_OP_DELETE:
trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
break;
@@ -164,14 +212,14 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_RMDIR:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
data[0] = &delete_pending[0];
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_DISPOSITION_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -182,14 +230,14 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_SET_EOF:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
size[0] = 8; /* sizeof __le64 */
data[0] = ptr;
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_END_OF_FILE_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -200,8 +248,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_SET_INFO:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 1;
@@ -209,13 +256,15 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
data[0] = ptr;
if (cfile)
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid, current->tgid,
FILE_BASIC_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
else {
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_BASIC_INFORMATION,
@@ -233,30 +282,31 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
full_path);
break;
case SMB2_OP_RENAME:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 2;
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- rename_info.ReplaceIfExists = 1;
- rename_info.RootDirectory = 0;
- rename_info.FileNameLength = cpu_to_le32(len);
+ vars->rename_info.ReplaceIfExists = 1;
+ vars->rename_info.RootDirectory = 0;
+ vars->rename_info.FileNameLength = cpu_to_le32(len);
size[0] = sizeof(struct smb2_file_rename_info);
- data[0] = &rename_info;
+ data[0] = &vars->rename_info;
size[1] = len + 2 /* null */;
data[1] = (__le16 *)ptr;
if (cfile)
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
current->tgid, FILE_RENAME_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
else {
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst],
COMPOUND_FID, COMPOUND_FID,
current->tgid, FILE_RENAME_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -271,23 +321,23 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
break;
case SMB2_OP_HARDLINK:
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[num_rqst].rq_iov = si_iov;
+ rqst[num_rqst].rq_iov = &vars->si_iov[0];
rqst[num_rqst].rq_nvec = 2;
len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
- link_info.ReplaceIfExists = 0;
- link_info.RootDirectory = 0;
- link_info.FileNameLength = cpu_to_le32(len);
+ vars->link_info.ReplaceIfExists = 0;
+ vars->link_info.RootDirectory = 0;
+ vars->link_info.FileNameLength = cpu_to_le32(len);
size[0] = sizeof(struct smb2_file_link_info);
- data[0] = &link_info;
+ data[0] = &vars->link_info;
size[1] = len + 2 /* null */;
data[1] = (__le16 *)ptr;
- rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_LINK_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -308,10 +358,10 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
if (cfile)
goto after_close;
/* Close */
- memset(&close_iov, 0, sizeof(close_iov));
- rqst[num_rqst].rq_iov = close_iov;
+ rqst[num_rqst].rq_iov = &vars->close_iov[0];
rqst[num_rqst].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[num_rqst], COMPOUND_FID,
+ rc = SMB2_close_init(tcon, server,
+ &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, false);
smb2_set_related(&rqst[num_rqst]);
if (rc)
@@ -322,11 +372,13 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
if (cfile) {
cifsFileInfo_put(cfile);
cfile = NULL;
- rc = compound_send_recv(xid, ses, flags, num_rqst - 2,
+ rc = compound_send_recv(xid, ses, server,
+ flags, num_rqst - 2,
&rqst[1], &resp_buftype[1],
&rsp_iov[1]);
} else
- rc = compound_send_recv(xid, ses, flags, num_rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, num_rqst,
rqst, resp_buftype,
rsp_iov);
@@ -336,8 +388,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
SMB2_open_free(&rqst[0]);
if (rc == -EREMCHG) {
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n", tcon->treeName);
tcon->need_reconnect = true;
}
@@ -363,6 +414,24 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
trace_smb3_query_info_compound_done(xid, ses->Suid,
tcon->tid);
break;
+ case SMB2_OP_POSIX_QUERY_INFO:
+ if (rc == 0) {
+ qi_rsp = (struct smb2_query_info_rsp *)
+ rsp_iov[1].iov_base;
+ rc = smb2_validate_and_copy_iov(
+ le16_to_cpu(qi_rsp->OutputBufferOffset),
+ le32_to_cpu(qi_rsp->OutputBufferLength),
+ &rsp_iov[1], sizeof(struct smb311_posix_qinfo) /* add SIDs */, ptr);
+ }
+ if (rqst[1].rq_iov)
+ SMB2_query_info_free(&rqst[1]);
+ if (rqst[2].rq_iov)
+ SMB2_close_free(&rqst[2]);
+ if (rc)
+ trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
+ else
+ trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
+ break;
case SMB2_OP_DELETE:
if (rc)
trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
@@ -420,6 +489,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
+ kfree(vars);
return rc;
}
@@ -495,6 +565,59 @@ out:
return rc;
}
+
+int
+smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, const char *full_path,
+ struct smb311_posix_qinfo *data, bool *adjust_tz, bool *symlink)
+{
+ int rc;
+ __u32 create_options = 0;
+ struct cifsFileInfo *cfile;
+ struct smb311_posix_qinfo *smb2_data;
+
+ *adjust_tz = false;
+ *symlink = false;
+
+ /* BB TODO: Make struct larger when add support for parsing owner SIDs */
+ smb2_data = kzalloc(sizeof(struct smb311_posix_qinfo),
+ GFP_KERNEL);
+ if (smb2_data == NULL)
+ return -ENOMEM;
+
+ /*
+ * BB TODO: Add support for using the cached root handle.
+ * Create SMB2_query_posix_info worker function to do non-compounded query
+ * when we already have an open file handle for this. For now this is fast enough
+ * (always using the compounded version).
+ */
+
+ cifs_get_readable_path(tcon, full_path, &cfile);
+ rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
+ FILE_READ_ATTRIBUTES, FILE_OPEN, create_options,
+ ACL_NO_MODE, smb2_data, SMB2_OP_POSIX_QUERY_INFO, cfile);
+ if (rc == -EOPNOTSUPP) {
+ /* BB TODO: When support for special files added to Samba re-verify this path */
+ *symlink = true;
+ create_options |= OPEN_REPARSE_POINT;
+
+ /* Failed on a symbolic link - query a reparse point info */
+ rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
+ FILE_READ_ATTRIBUTES, FILE_OPEN,
+ create_options, ACL_NO_MODE,
+ smb2_data, SMB2_OP_POSIX_QUERY_INFO, NULL);
+ }
+ if (rc)
+ goto out;
+
+ /* TODO: will need to allow for the 2 SIDs when add support for getting owner UID/GID */
+ memcpy(data, smb2_data, sizeof(struct smb311_posix_qinfo));
+
+out:
+ kfree(smb2_data);
+ return rc;
+}
+
int
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
struct cifs_tcon *tcon, const char *name,
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-13 02:33:34 +0000