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path: root/fs/cifs/smb2ops.c
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Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r--fs/cifs/smb2ops.c174
1 files changed, 109 insertions, 65 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index f829f4165d38..736d86b8a910 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -12,6 +12,7 @@
#include <linux/uuid.h>
#include <linux/sort.h>
#include <crypto/aead.h>
+#include <linux/fiemap.h>
#include "cifsfs.h"
#include "cifsglob.h"
#include "smb2pdu.h"
@@ -79,7 +80,7 @@ smb2_add_credits(struct TCP_Server_Info *server,
if (*val > 65000) {
*val = 65000; /* Don't get near 64K credits, avoid srv bugs */
- printk_once(KERN_WARNING "server overflowed SMB3 credits\n");
+ pr_warn_once("server overflowed SMB3 credits\n");
}
server->in_flight--;
if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
@@ -708,7 +709,8 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = pfid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, &utf16_path);
if (rc)
goto oshr_free;
smb2_set_next_command(tcon, &rqst[0]);
@@ -717,7 +719,8 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, FILE_ALL_INFORMATION,
SMB2_O_INFO_FILE, 0,
sizeof(struct smb2_file_all_info) +
@@ -727,7 +730,8 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
smb2_set_related(&rqst[1]);
- rc = compound_send_recv(xid, ses, flags, 2, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 2, rqst,
resp_buftype, rsp_iov);
mutex_lock(&tcon->crfid.fid_mutex);
@@ -767,8 +771,8 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
if (rc) {
if (rc == -EREMCHG) {
tcon->need_reconnect = true;
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n",
+ tcon->treeName);
}
goto oshr_exit;
}
@@ -1102,6 +1106,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb)
{
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
__le16 *utf16_path = NULL;
int ea_name_len = strlen(ea_name);
int flags = 0;
@@ -1190,7 +1195,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto sea_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -1216,7 +1222,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
size[0] = len;
data[0] = ea;
- rc = SMB2_set_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_FULL_EA_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
@@ -1228,10 +1235,12 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
memset(&close_iov, 0, sizeof(close_iov));
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
/* no need to bump num_remote_opens because handle immediately closed */
@@ -1452,6 +1461,16 @@ req_res_key_exit:
return rc;
}
+struct iqi_vars {
+ struct smb_rqst rqst[3];
+ struct kvec rsp_iov[3];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qi_iov[1];
+ struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
+ struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
+ struct kvec close_iov[1];
+};
+
static int
smb2_ioctl_query_info(const unsigned int xid,
struct cifs_tcon *tcon,
@@ -1459,7 +1478,11 @@ smb2_ioctl_query_info(const unsigned int xid,
__le16 *path, int is_dir,
unsigned long p)
{
+ struct iqi_vars *vars;
+ struct smb_rqst *rqst;
+ struct kvec *rsp_iov;
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
char __user *arg = (char __user *)p;
struct smb_query_info qi;
struct smb_query_info __user *pqi;
@@ -1468,45 +1491,47 @@ smb2_ioctl_query_info(const unsigned int xid,
struct smb2_query_info_rsp *qi_rsp = NULL;
struct smb2_ioctl_rsp *io_rsp = NULL;
void *buffer = NULL;
- struct smb_rqst rqst[3];
int resp_buftype[3];
- struct kvec rsp_iov[3];
- struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
struct cifs_open_parms oparms;
u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_fid fid;
- struct kvec qi_iov[1];
- struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
- struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
- struct kvec close_iov[1];
unsigned int size[2];
void *data[2];
int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
- memset(rqst, 0, sizeof(rqst));
+ vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
+ if (vars == NULL)
+ return -ENOMEM;
+ rqst = &vars->rqst[0];
+ rsp_iov = &vars->rsp_iov[0];
+
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
- memset(rsp_iov, 0, sizeof(rsp_iov));
if (copy_from_user(&qi, arg, sizeof(struct smb_query_info)))
- return -EFAULT;
+ goto e_fault;
- if (qi.output_buffer_length > 1024)
+ if (qi.output_buffer_length > 1024) {
+ kfree(vars);
return -EINVAL;
+ }
- if (!ses || !(ses->server))
+ if (!ses || !server) {
+ kfree(vars);
return -EIO;
+ }
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
buffer = memdup_user(arg + sizeof(struct smb_query_info),
qi.output_buffer_length);
- if (IS_ERR(buffer))
+ if (IS_ERR(buffer)) {
+ kfree(vars);
return PTR_ERR(buffer);
+ }
/* Open */
- memset(&open_iov, 0, sizeof(open_iov));
- rqst[0].rq_iov = open_iov;
+ rqst[0].rq_iov = &vars->open_iov[0];
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
memset(&oparms, 0, sizeof(oparms));
@@ -1537,7 +1562,8 @@ smb2_ioctl_query_info(const unsigned int xid,
oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
}
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, path);
if (rc)
goto iqinf_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -1548,11 +1574,11 @@ smb2_ioctl_query_info(const unsigned int xid,
if (!capable(CAP_SYS_ADMIN))
rc = -EPERM;
else {
- memset(&io_iov, 0, sizeof(io_iov));
- rqst[1].rq_iov = io_iov;
+ rqst[1].rq_iov = &vars->io_iov[0];
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
- rc = SMB2_ioctl_init(tcon, &rqst[1],
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst[1],
COMPOUND_FID, COMPOUND_FID,
qi.info_type, true, buffer,
qi.output_buffer_length,
@@ -1565,31 +1591,32 @@ smb2_ioctl_query_info(const unsigned int xid,
if (!capable(CAP_SYS_ADMIN))
rc = -EPERM;
else {
- memset(&si_iov, 0, sizeof(si_iov));
- rqst[1].rq_iov = si_iov;
+ rqst[1].rq_iov = &vars->si_iov[0];
rqst[1].rq_nvec = 1;
size[0] = 8;
data[0] = buffer;
- rc = SMB2_set_info_init(tcon, &rqst[1],
+ rc = SMB2_set_info_init(tcon, server,
+ &rqst[1],
COMPOUND_FID, COMPOUND_FID,
current->tgid,
FILE_END_OF_FILE_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
}
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
- memset(&qi_iov, 0, sizeof(qi_iov));
- rqst[1].rq_iov = qi_iov;
+ rqst[1].rq_iov = &vars->qi_iov[0];
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID,
COMPOUND_FID, qi.file_info_class,
qi.info_type, qi.additional_information,
qi.input_buffer_length,
qi.output_buffer_length, buffer);
} else { /* unknown flags */
- cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
+ cifs_tcon_dbg(VFS, "Invalid passthru query flags: 0x%x\n",
+ qi.flags);
rc = -EINVAL;
}
@@ -1599,16 +1626,17 @@ smb2_ioctl_query_info(const unsigned int xid,
smb2_set_related(&rqst[1]);
/* Close */
- memset(&close_iov, 0, sizeof(close_iov));
- rqst[2].rq_iov = close_iov;
+ rqst[2].rq_iov = &vars->close_iov[0];
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto iqinf_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
if (rc)
goto iqinf_exit;
@@ -1649,6 +1677,7 @@ smb2_ioctl_query_info(const unsigned int xid,
}
iqinf_exit:
+ kfree(vars);
kfree(buffer);
SMB2_open_free(&rqst[0]);
if (qi.flags & PASSTHRU_FSCTL)
@@ -1719,7 +1748,7 @@ smb2_copychunk_range(const unsigned int xid,
if (rc == 0) {
if (ret_data_len !=
sizeof(struct copychunk_ioctl_rsp)) {
- cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
+ cifs_tcon_dbg(VFS, "Invalid cchunk response size\n");
rc = -EIO;
goto cchunk_out;
}
@@ -1733,12 +1762,12 @@ smb2_copychunk_range(const unsigned int xid,
*/
if (le32_to_cpu(retbuf->TotalBytesWritten) >
le32_to_cpu(pcchunk->Length)) {
- cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
+ cifs_tcon_dbg(VFS, "Invalid copy chunk response\n");
rc = -EIO;
goto cchunk_out;
}
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
- cifs_tcon_dbg(VFS, "invalid num chunks written\n");
+ cifs_tcon_dbg(VFS, "Invalid num chunks written\n");
rc = -EIO;
goto cchunk_out;
}
@@ -2159,6 +2188,7 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_open_parms oparms;
struct smb2_query_directory_rsp *qd_rsp = NULL;
struct smb2_create_rsp *op_rsp = NULL;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
if (!utf16_path)
@@ -2183,7 +2213,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto qdf_free;
smb2_set_next_command(tcon, &rqst[0]);
@@ -2196,7 +2227,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
rqst[1].rq_iov = qd_iov;
rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
- rc = SMB2_query_directory_init(xid, tcon, &rqst[1],
+ rc = SMB2_query_directory_init(xid, tcon, server,
+ &rqst[1],
COMPOUND_FID, COMPOUND_FID,
0, srch_inf->info_level);
if (rc)
@@ -2204,7 +2236,8 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
smb2_set_related(&rqst[1]);
- rc = compound_send_recv(xid, tcon->ses, flags, 2, rqst,
+ rc = compound_send_recv(xid, tcon->ses, server,
+ flags, 2, rqst,
resp_buftype, rsp_iov);
/* If the open failed there is nothing to do */
@@ -2409,6 +2442,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb)
{
struct cifs_ses *ses = tcon->ses;
+ struct TCP_Server_Info *server = cifs_pick_channel(ses);
int flags = 0;
struct smb_rqst rqst[3];
int resp_buftype[3];
@@ -2439,7 +2473,8 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto qic_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -2448,7 +2483,8 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
rqst[1].rq_iov = qi_iov;
rqst[1].rq_nvec = 1;
- rc = SMB2_query_info_init(tcon, &rqst[1], COMPOUND_FID, COMPOUND_FID,
+ rc = SMB2_query_info_init(tcon, server,
+ &rqst[1], COMPOUND_FID, COMPOUND_FID,
class, type, 0,
output_len, 0,
NULL);
@@ -2461,19 +2497,21 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto qic_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
if (rc) {
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
if (rc == -EREMCHG) {
tcon->need_reconnect = true;
- printk_once(KERN_WARNING "server share %s deleted\n",
- tcon->treeName);
+ pr_warn_once("server share %s deleted\n",
+ tcon->treeName);
}
goto qic_exit;
}
@@ -2753,15 +2791,15 @@ parse_reparse_point(struct reparse_data_buffer *buf,
struct cifs_sb_info *cifs_sb)
{
if (plen < sizeof(struct reparse_data_buffer)) {
- cifs_dbg(VFS, "reparse buffer is too small. Must be "
- "at least 8 bytes but was %d\n", plen);
+ cifs_dbg(VFS, "reparse buffer is too small. Must be at least 8 bytes but was %d\n",
+ plen);
return -EIO;
}
if (plen < le16_to_cpu(buf->ReparseDataLength) +
sizeof(struct reparse_data_buffer)) {
- cifs_dbg(VFS, "srv returned invalid reparse buf "
- "length: %d\n", plen);
+ cifs_dbg(VFS, "srv returned invalid reparse buf length: %d\n",
+ plen);
return -EIO;
}
@@ -2776,8 +2814,8 @@ parse_reparse_point(struct reparse_data_buffer *buf,
(struct reparse_symlink_data_buffer *)buf,
plen, target_path, cifs_sb);
default:
- cifs_dbg(VFS, "srv returned unknown symlink buffer "
- "tag:0x%08x\n", le32_to_cpu(buf->ReparseTag));
+ cifs_dbg(VFS, "srv returned unknown symlink buffer tag:0x%08x\n",
+ le32_to_cpu(buf->ReparseTag));
return -EOPNOTSUPP;
}
}
@@ -2798,6 +2836,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
struct kvec err_iov = {NULL, 0};
struct smb2_err_rsp *err_buf = NULL;
struct smb2_symlink_err_rsp *symlink;
+ struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses);
unsigned int sub_len;
unsigned int sub_offset;
unsigned int print_len;
@@ -2843,7 +2882,8 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
oparms.fid = &fid;
oparms.reconnect = false;
- rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ rc = SMB2_open_init(tcon, server,
+ &rqst[0], &oplock, &oparms, utf16_path);
if (rc)
goto querty_exit;
smb2_set_next_command(tcon, &rqst[0]);
@@ -2854,7 +2894,8 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
rqst[1].rq_iov = io_iov;
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;
- rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
+ rc = SMB2_ioctl_init(tcon, server,
+ &rqst[1], fid.persistent_fid,
fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
true /* is_fctl */, NULL, 0,
CIFSMaxBufSize -
@@ -2872,13 +2913,15 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
+ rc = SMB2_close_init(tcon, server,
+ &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto querty_exit;
smb2_set_related(&rqst[2]);
- rc = compound_send_recv(xid, tcon->ses, flags, 3, rqst,
+ rc = compound_send_recv(xid, tcon->ses, server,
+ flags, 3, rqst,
resp_buftype, rsp_iov);
create_rsp = rsp_iov[0].iov_base;
@@ -3407,8 +3450,9 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
int i, num, rc, flags, last_blob;
u64 next;
- if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC))
- return -EBADR;
+ rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, 0);
+ if (rc)
+ return rc;
xid = get_xid();
again:
@@ -4571,7 +4615,7 @@ smb2_make_node(unsigned int xid, struct inode *inode,
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
int rc = -EPERM;
FILE_ALL_INFO *buf = NULL;
- struct cifs_io_parms io_parms;
+ struct cifs_io_parms io_parms = {0};
__u32 oplock = 0;
struct cifs_fid fid;
struct cifs_open_parms oparms;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.