diff options
Diffstat (limited to 'fs/cifs/connect.c')
| -rw-r--r-- | fs/cifs/connect.c | 2756 |
1 files changed, 1390 insertions, 1366 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 602f77c304c..20d75b8ddb2 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1,7 +1,7 @@ /* * fs/cifs/connect.c * - * Copyright (C) International Business Machines Corp., 2002,2009 + * Copyright (C) International Business Machines Corp., 2002,2011 * Author(s): Steve French (sfrench@us.ibm.com) * * This library is free software; you can redistribute it and/or modify @@ -40,6 +40,8 @@ #include <linux/module.h> #include <keys/user-type.h> #include <net/ipv6.h> +#include <linux/parser.h> + #include "cifspdu.h" #include "cifsglob.h" #include "cifsproto.h" @@ -54,15 +56,229 @@ #define CIFS_PORT 445 #define RFC1001_PORT 139 -/* SMB echo "timeout" -- FIXME: tunable? */ -#define SMB_ECHO_INTERVAL (60 * HZ) - extern mempool_t *cifs_req_poolp; /* FIXME: should these be tunable? */ #define TLINK_ERROR_EXPIRE (1 * HZ) #define TLINK_IDLE_EXPIRE (600 * HZ) +enum { + + /* Mount options that take no arguments */ + Opt_user_xattr, Opt_nouser_xattr, + Opt_forceuid, Opt_noforceuid, + Opt_forcegid, Opt_noforcegid, + Opt_noblocksend, Opt_noautotune, + Opt_hard, Opt_soft, Opt_perm, Opt_noperm, + Opt_mapchars, Opt_nomapchars, Opt_sfu, + Opt_nosfu, Opt_nodfs, Opt_posixpaths, + Opt_noposixpaths, Opt_nounix, + Opt_nocase, + Opt_brl, Opt_nobrl, + Opt_forcemandatorylock, Opt_setuids, + Opt_nosetuids, Opt_dynperm, Opt_nodynperm, + Opt_nohard, Opt_nosoft, + Opt_nointr, Opt_intr, + Opt_nostrictsync, Opt_strictsync, + Opt_serverino, Opt_noserverino, + Opt_rwpidforward, Opt_cifsacl, Opt_nocifsacl, + Opt_acl, Opt_noacl, Opt_locallease, + Opt_sign, Opt_seal, Opt_noac, + Opt_fsc, Opt_mfsymlinks, + Opt_multiuser, Opt_sloppy, Opt_nosharesock, + + /* Mount options which take numeric value */ + Opt_backupuid, Opt_backupgid, Opt_uid, + Opt_cruid, Opt_gid, Opt_file_mode, + Opt_dirmode, Opt_port, + Opt_rsize, Opt_wsize, Opt_actimeo, + + /* Mount options which take string value */ + Opt_user, Opt_pass, Opt_ip, + Opt_domain, Opt_srcaddr, Opt_iocharset, + Opt_netbiosname, Opt_servern, + Opt_ver, Opt_vers, Opt_sec, Opt_cache, + + /* Mount options to be ignored */ + Opt_ignore, + + /* Options which could be blank */ + Opt_blank_pass, + Opt_blank_user, + Opt_blank_ip, + + Opt_err +}; + +static const match_table_t cifs_mount_option_tokens = { + + { Opt_user_xattr, "user_xattr" }, + { Opt_nouser_xattr, "nouser_xattr" }, + { Opt_forceuid, "forceuid" }, + { Opt_noforceuid, "noforceuid" }, + { Opt_forcegid, "forcegid" }, + { Opt_noforcegid, "noforcegid" }, + { Opt_noblocksend, "noblocksend" }, + { Opt_noautotune, "noautotune" }, + { Opt_hard, "hard" }, + { Opt_soft, "soft" }, + { Opt_perm, "perm" }, + { Opt_noperm, "noperm" }, + { Opt_mapchars, "mapchars" }, + { Opt_nomapchars, "nomapchars" }, + { Opt_sfu, "sfu" }, + { Opt_nosfu, "nosfu" }, + { Opt_nodfs, "nodfs" }, + { Opt_posixpaths, "posixpaths" }, + { Opt_noposixpaths, "noposixpaths" }, + { Opt_nounix, "nounix" }, + { Opt_nounix, "nolinux" }, + { Opt_nocase, "nocase" }, + { Opt_nocase, "ignorecase" }, + { Opt_brl, "brl" }, + { Opt_nobrl, "nobrl" }, + { Opt_nobrl, "nolock" }, + { Opt_forcemandatorylock, "forcemandatorylock" }, + { Opt_forcemandatorylock, "forcemand" }, + { Opt_setuids, "setuids" }, + { Opt_nosetuids, "nosetuids" }, + { Opt_dynperm, "dynperm" }, + { Opt_nodynperm, "nodynperm" }, + { Opt_nohard, "nohard" }, + { Opt_nosoft, "nosoft" }, + { Opt_nointr, "nointr" }, + { Opt_intr, "intr" }, + { Opt_nostrictsync, "nostrictsync" }, + { Opt_strictsync, "strictsync" }, + { Opt_serverino, "serverino" }, + { Opt_noserverino, "noserverino" }, + { Opt_rwpidforward, "rwpidforward" }, + { Opt_cifsacl, "cifsacl" }, + { Opt_nocifsacl, "nocifsacl" }, + { Opt_acl, "acl" }, + { Opt_noacl, "noacl" }, + { Opt_locallease, "locallease" }, + { Opt_sign, "sign" }, + { Opt_seal, "seal" }, + { Opt_noac, "noac" }, + { Opt_fsc, "fsc" }, + { Opt_mfsymlinks, "mfsymlinks" }, + { Opt_multiuser, "multiuser" }, + { Opt_sloppy, "sloppy" }, + { Opt_nosharesock, "nosharesock" }, + + { Opt_backupuid, "backupuid=%s" }, + { Opt_backupgid, "backupgid=%s" }, + { Opt_uid, "uid=%s" }, + { Opt_cruid, "cruid=%s" }, + { Opt_gid, "gid=%s" }, + { Opt_file_mode, "file_mode=%s" }, + { Opt_dirmode, "dirmode=%s" }, + { Opt_dirmode, "dir_mode=%s" }, + { Opt_port, "port=%s" }, + { Opt_rsize, "rsize=%s" }, + { Opt_wsize, "wsize=%s" }, + { Opt_actimeo, "actimeo=%s" }, + + { Opt_blank_user, "user=" }, + { Opt_blank_user, "username=" }, + { Opt_user, "user=%s" }, + { Opt_user, "username=%s" }, + { Opt_blank_pass, "pass=" }, + { Opt_blank_pass, "password=" }, + { Opt_pass, "pass=%s" }, + { Opt_pass, "password=%s" }, + { Opt_blank_ip, "ip=" }, + { Opt_blank_ip, "addr=" }, + { Opt_ip, "ip=%s" }, + { Opt_ip, "addr=%s" }, + { Opt_ignore, "unc=%s" }, + { Opt_ignore, "target=%s" }, + { Opt_ignore, "path=%s" }, + { Opt_domain, "dom=%s" }, + { Opt_domain, "domain=%s" }, + { Opt_domain, "workgroup=%s" }, + { Opt_srcaddr, "srcaddr=%s" }, + { Opt_ignore, "prefixpath=%s" }, + { Opt_iocharset, "iocharset=%s" }, + { Opt_netbiosname, "netbiosname=%s" }, + { Opt_servern, "servern=%s" }, + { Opt_ver, "ver=%s" }, + { Opt_vers, "vers=%s" }, + { Opt_sec, "sec=%s" }, + { Opt_cache, "cache=%s" }, + + { Opt_ignore, "cred" }, + { Opt_ignore, "credentials" }, + { Opt_ignore, "cred=%s" }, + { Opt_ignore, "credentials=%s" }, + { Opt_ignore, "guest" }, + { Opt_ignore, "rw" }, + { Opt_ignore, "ro" }, + { Opt_ignore, "suid" }, + { Opt_ignore, "nosuid" }, + { Opt_ignore, "exec" }, + { Opt_ignore, "noexec" }, + { Opt_ignore, "nodev" }, + { Opt_ignore, "noauto" }, + { Opt_ignore, "dev" }, + { Opt_ignore, "mand" }, + { Opt_ignore, "nomand" }, + { Opt_ignore, "_netdev" }, + + { Opt_err, NULL } +}; + +enum { + Opt_sec_krb5, Opt_sec_krb5i, Opt_sec_krb5p, + Opt_sec_ntlmsspi, Opt_sec_ntlmssp, + Opt_ntlm, Opt_sec_ntlmi, Opt_sec_ntlmv2, + Opt_sec_ntlmv2i, Opt_sec_lanman, + Opt_sec_none, + + Opt_sec_err +}; + +static const match_table_t cifs_secflavor_tokens = { + { Opt_sec_krb5, "krb5" }, + { Opt_sec_krb5i, "krb5i" }, + { Opt_sec_krb5p, "krb5p" }, + { Opt_sec_ntlmsspi, "ntlmsspi" }, + { Opt_sec_ntlmssp, "ntlmssp" }, + { Opt_ntlm, "ntlm" }, + { Opt_sec_ntlmi, "ntlmi" }, + { Opt_sec_ntlmv2, "nontlm" }, + { Opt_sec_ntlmv2, "ntlmv2" }, + { Opt_sec_ntlmv2i, "ntlmv2i" }, + { Opt_sec_lanman, "lanman" }, + { Opt_sec_none, "none" }, + + { Opt_sec_err, NULL } +}; + +/* cache flavors */ +enum { + Opt_cache_loose, + Opt_cache_strict, + Opt_cache_none, + Opt_cache_err +}; + +static const match_table_t cifs_cacheflavor_tokens = { + { Opt_cache_loose, "loose" }, + { Opt_cache_strict, "strict" }, + { Opt_cache_none, "none" }, + { Opt_cache_err, NULL } +}; + +static const match_table_t cifs_smb_version_tokens = { + { Smb_1, SMB1_VERSION_STRING }, + { Smb_20, SMB20_VERSION_STRING}, + { Smb_21, SMB21_VERSION_STRING }, + { Smb_30, SMB30_VERSION_STRING }, + { Smb_302, SMB302_VERSION_STRING }, +}; + static int ip_connect(struct TCP_Server_Info *server); static int generic_ip_connect(struct TCP_Server_Info *server); static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink); @@ -78,7 +294,7 @@ static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, * reconnect tcp session * wake up waiters on reconnection? - (not needed currently) */ -static int +int cifs_reconnect(struct TCP_Server_Info *server) { int rc = 0; @@ -98,12 +314,16 @@ cifs_reconnect(struct TCP_Server_Info *server) server->tcpStatus = CifsNeedReconnect; spin_unlock(&GlobalMid_Lock); server->maxBuf = 0; +#ifdef CONFIG_CIFS_SMB2 + server->max_read = 0; +#endif - cFYI(1, "Reconnecting tcp session"); + cifs_dbg(FYI, "Reconnecting tcp session\n"); /* before reconnecting the tcp session, mark the smb session (uid) and the tid bad so they are not used until reconnected */ - cFYI(1, "%s: marking sessions and tcons for reconnect", __func__); + cifs_dbg(FYI, "%s: marking sessions and tcons for reconnect\n", + __func__); spin_lock(&cifs_tcp_ses_lock); list_for_each(tmp, &server->smb_ses_list) { ses = list_entry(tmp, struct cifs_ses, smb_ses_list); @@ -117,15 +337,14 @@ cifs_reconnect(struct TCP_Server_Info *server) spin_unlock(&cifs_tcp_ses_lock); /* do not want to be sending data on a socket we are freeing */ - cFYI(1, "%s: tearing down socket", __func__); + cifs_dbg(FYI, "%s: tearing down socket\n", __func__); mutex_lock(&server->srv_mutex); if (server->ssocket) { - cFYI(1, "State: 0x%x Flags: 0x%lx", server->ssocket->state, - server->ssocket->flags); + cifs_dbg(FYI, "State: 0x%x Flags: 0x%lx\n", + server->ssocket->state, server->ssocket->flags); kernel_sock_shutdown(server->ssocket, SHUT_WR); - cFYI(1, "Post shutdown state: 0x%x Flags: 0x%lx", - server->ssocket->state, - server->ssocket->flags); + cifs_dbg(FYI, "Post shutdown state: 0x%x Flags: 0x%lx\n", + server->ssocket->state, server->ssocket->flags); sock_release(server->ssocket); server->ssocket = NULL; } @@ -139,17 +358,17 @@ cifs_reconnect(struct TCP_Server_Info *server) /* mark submitted MIDs for retry and issue callback */ INIT_LIST_HEAD(&retry_list); - cFYI(1, "%s: moving mids to private list", __func__); + cifs_dbg(FYI, "%s: moving mids to private list\n", __func__); spin_lock(&GlobalMid_Lock); list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); - if (mid_entry->midState == MID_REQUEST_SUBMITTED) - mid_entry->midState = MID_RETRY_NEEDED; + if (mid_entry->mid_state == MID_REQUEST_SUBMITTED) + mid_entry->mid_state = MID_RETRY_NEEDED; list_move(&mid_entry->qhead, &retry_list); } spin_unlock(&GlobalMid_Lock); - cFYI(1, "%s: issuing mid callbacks", __func__); + cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__); list_for_each_safe(tmp, tmp2, &retry_list) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); list_del_init(&mid_entry->qhead); @@ -160,9 +379,10 @@ cifs_reconnect(struct TCP_Server_Info *server) try_to_freeze(); /* we should try only the port we connected to before */ + mutex_lock(&server->srv_mutex); rc = generic_ip_connect(server); if (rc) { - cFYI(1, "reconnect error %d", rc); + cifs_dbg(FYI, "reconnect error %d\n", rc); msleep(3000); } else { atomic_inc(&tcpSesReconnectCount); @@ -171,147 +391,12 @@ cifs_reconnect(struct TCP_Server_Info *server) server->tcpStatus = CifsNeedNegotiate; spin_unlock(&GlobalMid_Lock); } + mutex_unlock(&server->srv_mutex); } while (server->tcpStatus == CifsNeedReconnect); return rc; } -/* - return codes: - 0 not a transact2, or all data present - >0 transact2 with that much data missing - -EINVAL = invalid transact2 - - */ -static int check2ndT2(struct smb_hdr *pSMB) -{ - struct smb_t2_rsp *pSMBt; - int remaining; - __u16 total_data_size, data_in_this_rsp; - - if (pSMB->Command != SMB_COM_TRANSACTION2) - return 0; - - /* check for plausible wct, bcc and t2 data and parm sizes */ - /* check for parm and data offset going beyond end of smb */ - if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ - cFYI(1, "invalid transact2 word count"); - return -EINVAL; - } - - pSMBt = (struct smb_t2_rsp *)pSMB; - - total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); - data_in_this_rsp = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); - - if (total_data_size == data_in_this_rsp) - return 0; - else if (total_data_size < data_in_this_rsp) { - cFYI(1, "total data %d smaller than data in frame %d", - total_data_size, data_in_this_rsp); - return -EINVAL; - } - - remaining = total_data_size - data_in_this_rsp; - - cFYI(1, "missing %d bytes from transact2, check next response", - remaining); - if (total_data_size > CIFSMaxBufSize) { - cERROR(1, "TotalDataSize %d is over maximum buffer %d", - total_data_size, CIFSMaxBufSize); - return -EINVAL; - } - return remaining; -} - -static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) -{ - struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)psecond; - struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; - char *data_area_of_tgt; - char *data_area_of_src; - int remaining; - unsigned int byte_count, total_in_tgt; - __u16 tgt_total_cnt, src_total_cnt, total_in_src; - - src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount); - tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount); - - if (tgt_total_cnt != src_total_cnt) - cFYI(1, "total data count of primary and secondary t2 differ " - "source=%hu target=%hu", src_total_cnt, tgt_total_cnt); - - total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount); - - remaining = tgt_total_cnt - total_in_tgt; - - if (remaining < 0) { - cFYI(1, "Server sent too much data. tgt_total_cnt=%hu " - "total_in_tgt=%hu", tgt_total_cnt, total_in_tgt); - return -EPROTO; - } - - if (remaining == 0) { - /* nothing to do, ignore */ - cFYI(1, "no more data remains"); - return 0; - } - - total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount); - if (remaining < total_in_src) - cFYI(1, "transact2 2nd response contains too much data"); - - /* find end of first SMB data area */ - data_area_of_tgt = (char *)&pSMBt->hdr.Protocol + - get_unaligned_le16(&pSMBt->t2_rsp.DataOffset); - - /* validate target area */ - data_area_of_src = (char *)&pSMBs->hdr.Protocol + - get_unaligned_le16(&pSMBs->t2_rsp.DataOffset); - - data_area_of_tgt += total_in_tgt; - - total_in_tgt += total_in_src; - /* is the result too big for the field? */ - if (total_in_tgt > USHRT_MAX) { - cFYI(1, "coalesced DataCount too large (%u)", total_in_tgt); - return -EPROTO; - } - put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount); - - /* fix up the BCC */ - byte_count = get_bcc(pTargetSMB); - byte_count += total_in_src; - /* is the result too big for the field? */ - if (byte_count > USHRT_MAX) { - cFYI(1, "coalesced BCC too large (%u)", byte_count); - return -EPROTO; - } - put_bcc(byte_count, pTargetSMB); - - byte_count = be32_to_cpu(pTargetSMB->smb_buf_length); - byte_count += total_in_src; - /* don't allow buffer to overflow */ - if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { - cFYI(1, "coalesced BCC exceeds buffer size (%u)", byte_count); - return -ENOBUFS; - } - pTargetSMB->smb_buf_length = cpu_to_be32(byte_count); - - /* copy second buffer into end of first buffer */ - memcpy(data_area_of_tgt, data_area_of_src, total_in_src); - - if (remaining != total_in_src) { - /* more responses to go */ - cFYI(1, "waiting for more secondary responses"); - return 1; - } - - /* we are done */ - cFYI(1, "found the last secondary response"); - return 0; -} - static void cifs_echo_request(struct work_struct *work) { @@ -320,21 +405,23 @@ cifs_echo_request(struct work_struct *work) struct TCP_Server_Info, echo.work); /* - * We cannot send an echo until the NEGOTIATE_PROTOCOL request is - * done, which is indicated by maxBuf != 0. Also, no need to ping if - * we got a response recently + * We cannot send an echo if it is disabled or until the + * NEGOTIATE_PROTOCOL request is done, which is indicated by + * server->ops->need_neg() == true. Also, no need to ping if + * we got a response recently. */ - if (server->maxBuf == 0 || + if (!server->ops->need_neg || server->ops->need_neg(server) || + (server->ops->can_echo && !server->ops->can_echo(server)) || time_before(jiffies, server->lstrp + SMB_ECHO_INTERVAL - HZ)) goto requeue_echo; - rc = CIFSSMBEcho(server); + rc = server->ops->echo ? server->ops->echo(server) : -ENOSYS; if (rc) - cFYI(1, "Unable to send echo request to server: %s", - server->hostname); + cifs_dbg(FYI, "Unable to send echo request to server: %s\n", + server->hostname); requeue_echo: - queue_delayed_work(system_nrt_wq, &server->echo, SMB_ECHO_INTERVAL); + queue_delayed_work(cifsiod_wq, &server->echo, SMB_ECHO_INTERVAL); } static bool @@ -343,20 +430,20 @@ allocate_buffers(struct TCP_Server_Info *server) if (!server->bigbuf) { server->bigbuf = (char *)cifs_buf_get(); if (!server->bigbuf) { - cERROR(1, "No memory for large SMB response"); + cifs_dbg(VFS, "No memory for large SMB response\n"); msleep(3000); /* retry will check if exiting */ return false; } } else if (server->large_buf) { /* we are reusing a dirty large buf, clear its start */ - memset(server->bigbuf, 0, sizeof(struct smb_hdr)); + memset(server->bigbuf, 0, HEADER_SIZE(server)); } if (!server->smallbuf) { server->smallbuf = (char *)cifs_small_buf_get(); if (!server->smallbuf) { - cERROR(1, "No memory for SMB response"); + cifs_dbg(VFS, "No memory for SMB response\n"); msleep(1000); /* retry will check if exiting */ return false; @@ -364,7 +451,7 @@ allocate_buffers(struct TCP_Server_Info *server) /* beginning of smb buffer is cleared in our buf_get */ } else { /* if existing small buf clear beginning */ - memset(server->smallbuf, 0, sizeof(struct smb_hdr)); + memset(server->smallbuf, 0, HEADER_SIZE(server)); } return true; @@ -373,12 +460,21 @@ allocate_buffers(struct TCP_Server_Info *server) static bool server_unresponsive(struct TCP_Server_Info *server) { - if (echo_retries > 0 && server->tcpStatus == CifsGood && - time_after(jiffies, server->lstrp + - (echo_retries * SMB_ECHO_INTERVAL))) { - cERROR(1, "Server %s has not responded in %d seconds. " - "Reconnecting...", server->hostname, - (echo_retries * SMB_ECHO_INTERVAL / HZ)); + /* + * We need to wait 2 echo intervals to make sure we handle such + * situations right: + * 1s client sends a normal SMB request + * 2s client gets a response + * 30s echo workqueue job pops, and decides we got a response recently + * and don't need to send another + * ... + * 65s kernel_recvmsg times out, and we see that we haven't gotten + * a response in >60s. + */ + if (server->tcpStatus == CifsGood && + time_after(jiffies, server->lstrp + 2 * SMB_ECHO_INTERVAL)) { + cifs_dbg(VFS, "Server %s has not responded in %d seconds. Reconnecting...\n", + server->hostname, (2 * SMB_ECHO_INTERVAL) / HZ); cifs_reconnect(server); wake_up(&server->response_q); return true; @@ -489,8 +585,8 @@ cifs_readv_from_socket(struct TCP_Server_Info *server, struct kvec *iov_orig, length = 0; continue; } else if (length <= 0) { - cFYI(1, "Received no data or error: expecting %d " - "got %d", to_read, length); + cifs_dbg(FYI, "Received no data or error: expecting %d\n" + "got %d", to_read, length); cifs_reconnect(server); total_read = -EAGAIN; break; @@ -524,17 +620,17 @@ is_smb_response(struct TCP_Server_Info *server, unsigned char type) /* Regular SMB response */ return true; case RFC1002_SESSION_KEEP_ALIVE: - cFYI(1, "RFC 1002 session keep alive"); + cifs_dbg(FYI, "RFC 1002 session keep alive\n"); break; case RFC1002_POSITIVE_SESSION_RESPONSE: - cFYI(1, "RFC 1002 positive session response"); + cifs_dbg(FYI, "RFC 1002 positive session response\n"); break; case RFC1002_NEGATIVE_SESSION_RESPONSE: /* * We get this from Windows 98 instead of an error on * SMB negprot response. */ - cFYI(1, "RFC 1002 negative session response"); + cifs_dbg(FYI, "RFC 1002 negative session response\n"); /* give server a second to clean up */ msleep(1000); /* @@ -548,31 +644,13 @@ is_smb_response(struct TCP_Server_Info *server, unsigned char type) wake_up(&server->response_q); break; default: - cERROR(1, "RFC 1002 unknown response type 0x%x", type); + cifs_dbg(VFS, "RFC 1002 unknown response type 0x%x\n", type); cifs_reconnect(server); } return false; } -static struct mid_q_entry * -find_mid(struct TCP_Server_Info *server, struct smb_hdr *buf) -{ - struct mid_q_entry *mid; - - spin_lock(&GlobalMid_Lock); - list_for_each_entry(mid, &server->pending_mid_q, qhead) { - if (mid->mid == buf->Mid && - mid->midState == MID_REQUEST_SUBMITTED && - mid->command == buf->Command) { - spin_unlock(&GlobalMid_Lock); - return mid; - } - } - spin_unlock(&GlobalMid_Lock); - return NULL; -} - void dequeue_mid(struct mid_q_entry *mid, bool malformed) { @@ -581,42 +659,22 @@ dequeue_mid(struct mid_q_entry *mid, bool malformed) #endif spin_lock(&GlobalMid_Lock); if (!malformed) - mid->midState = MID_RESPONSE_RECEIVED; + mid->mid_state = MID_RESPONSE_RECEIVED; else - mid->midState = MID_RESPONSE_MALFORMED; + mid->mid_state = MID_RESPONSE_MALFORMED; list_del_init(&mid->qhead); spin_unlock(&GlobalMid_Lock); } static void handle_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server, - struct smb_hdr *buf, int malformed) + char *buf, int malformed) { - if (malformed == 0 && check2ndT2(buf) > 0) { - mid->multiRsp = true; - if (mid->resp_buf) { - /* merge response - fix up 1st*/ - malformed = coalesce_t2(buf, mid->resp_buf); - if (malformed > 0) - return; - - /* All parts received or packet is malformed. */ - mid->multiEnd = true; - return dequeue_mid(mid, malformed); - } - if (!server->large_buf) { - /*FIXME: switch to already allocated largebuf?*/ - cERROR(1, "1st trans2 resp needs bigbuf"); - } else { - /* Have first buffer */ - mid->resp_buf = buf; - mid->largeBuf = true; - server->bigbuf = NULL; - } + if (server->ops->check_trans2 && + server->ops->check_trans2(mid, server, buf, malformed)) return; - } mid->resp_buf = buf; - mid->largeBuf = server->large_buf; + mid->large_buf = server->large_buf; /* Was previous buf put in mpx struct for multi-rsp? */ if (!mid->multiRsp) { /* smb buffer will be freed by user thread */ @@ -642,19 +700,11 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) spin_unlock(&GlobalMid_Lock); wake_up_all(&server->response_q); - /* - * Check if we have blocked requests that need to free. Note that - * cifs_max_pending is normally 50, but can be set at module install - * time to as little as two. - */ - spin_lock(&GlobalMid_Lock); - if (atomic_read(&server->inFlight) >= cifs_max_pending) - atomic_set(&server->inFlight, cifs_max_pending - 1); - /* - * We do not want to set the max_pending too low or we could end up - * with the counter going negative. - */ - spin_unlock(&GlobalMid_Lock); + /* check if we have blocked requests that need to free */ + spin_lock(&server->req_lock); + if (server->credits <= 0) + server->credits = 1; + spin_unlock(&server->req_lock); /* * Although there should not be any requests blocked on this queue it * can not hurt to be paranoid and try to wake up requests that may @@ -680,8 +730,8 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) spin_lock(&GlobalMid_Lock); list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); - cFYI(1, "Clearing mid 0x%x", mid_entry->mid); - mid_entry->midState = MID_SHUTDOWN; + cifs_dbg(FYI, "Clearing mid 0x%llx\n", mid_entry->mid); + mid_entry->mid_state = MID_SHUTDOWN; list_move(&mid_entry->qhead, &dispose_list); } spin_unlock(&GlobalMid_Lock); @@ -689,7 +739,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) /* now walk dispose list and issue callbacks */ list_for_each_safe(tmp, tmp2, &dispose_list) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); - cFYI(1, "Callback mid 0x%x", mid_entry->mid); + cifs_dbg(FYI, "Callback mid 0x%llx\n", mid_entry->mid); list_del_init(&mid_entry->qhead); mid_entry->callback(mid_entry); } @@ -706,7 +756,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server) * least 45 seconds before giving up on a request getting a * response and going ahead and killing cifsd. */ - cFYI(1, "Wait for exit from demultiplex thread"); + cifs_dbg(FYI, "Wait for exit from demultiplex thread\n"); msleep(46000); /* * If threads still have not exited they are probably never @@ -729,13 +779,11 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid) { int length; char *buf = server->smallbuf; - struct smb_hdr *smb_buffer = (struct smb_hdr *)buf; - unsigned int pdu_length = be32_to_cpu(smb_buffer->smb_buf_length); + unsigned int pdu_length = get_rfc1002_length(buf); /* make sure this will fit in a large buffer */ - if (pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { - cERROR(1, "SMB response too long (%u bytes)", - pdu_length); + if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server) - 4) { + cifs_dbg(VFS, "SMB response too long (%u bytes)\n", pdu_length); cifs_reconnect(server); wake_up(&server->response_q); return -EAGAIN; @@ -744,20 +792,18 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid) /* switch to large buffer if too big for a small one */ if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { server->large_buf = true; - memcpy(server->bigbuf, server->smallbuf, server->total_read); + memcpy(server->bigbuf, buf, server->total_read); buf = server->bigbuf; - smb_buffer = (struct smb_hdr *)buf; } /* now read the rest */ - length = cifs_read_from_socket(server, - buf + sizeof(struct smb_hdr) - 1, - pdu_length - sizeof(struct smb_hdr) + 1 + 4); + length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1, + pdu_length - HEADER_SIZE(server) + 1 + 4); if (length < 0) return length; server->total_read += length; - dump_smb(smb_buffer, server->total_read); + dump_smb(buf, server->total_read); /* * We know that we received enough to get to the MID as we @@ -768,15 +814,19 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid) * 48 bytes is enough to display the header and a little bit * into the payload for debugging purposes. */ - length = checkSMB(smb_buffer, smb_buffer->Mid, server->total_read); + length = server->ops->check_message(buf, server->total_read); if (length != 0) cifs_dump_mem("Bad SMB: ", buf, min_t(unsigned int, server->total_read, 48)); + if (server->ops->is_status_pending && + server->ops->is_status_pending(buf, server, length)) + return -1; + if (!mid) return length; - handle_mid(mid, server, smb_buffer, length); + handle_mid(mid, server, buf, length); return 0; } @@ -787,12 +837,11 @@ cifs_demultiplex_thread(void *p) struct TCP_Server_Info *server = p; unsigned int pdu_length; char *buf = NULL; - struct smb_hdr *smb_buffer = NULL; struct task_struct *task_to_wake = NULL; struct mid_q_entry *mid_entry; current->flags |= PF_MEMALLOC; - cFYI(1, "Demultiplex PID: %d", task_pid_nr(current)); + cifs_dbg(FYI, "Demultiplex PID: %d\n", task_pid_nr(current)); length = atomic_inc_return(&tcpSesAllocCount); if (length > 1) @@ -808,7 +857,6 @@ cifs_demultiplex_thread(void *p) continue; server->large_buf = false; - smb_buffer = (struct smb_hdr *)server->smallbuf; buf = server->smallbuf; pdu_length = 4; /* enough to get RFC1001 header */ @@ -821,16 +869,16 @@ cifs_demultiplex_thread(void *p) * The right amount was read from socket - 4 bytes, * so we can now interpret the length field. */ - pdu_length = be32_to_cpu(smb_buffer->smb_buf_length); + pdu_length = get_rfc1002_length(buf); - cFYI(1, "RFC1002 header 0x%x", pdu_length); + cifs_dbg(FYI, "RFC1002 header 0x%x\n", pdu_length); if (!is_smb_response(server, buf[0])) continue; /* make sure we have enough to get to the MID */ - if (pdu_length < sizeof(struct smb_hdr) - 1 - 4) { - cERROR(1, "SMB response too short (%u bytes)", - pdu_length); + if (pdu_length < HEADER_SIZE(server) - 1 - 4) { + cifs_dbg(VFS, "SMB response too short (%u bytes)\n", + pdu_length); cifs_reconnect(server); wake_up(&server->response_q); continue; @@ -838,12 +886,12 @@ cifs_demultiplex_thread(void *p) /* read down to the MID */ length = cifs_read_from_socket(server, buf + 4, - sizeof(struct smb_hdr) - 1 - 4); + HEADER_SIZE(server) - 1 - 4); if (length < 0) continue; server->total_read += length; - mid_entry = find_mid(server, smb_buffer); + mid_entry = server->ops->find_mid(server, buf); if (!mid_entry || !mid_entry->receive) length = standard_receive3(server, mid_entry); @@ -853,22 +901,22 @@ cifs_demultiplex_thread(void *p) if (length < 0) continue; - if (server->large_buf) { + if (server->large_buf) buf = server->bigbuf; - smb_buffer = (struct smb_hdr *)buf; - } server->lstrp = jiffies; if (mid_entry != NULL) { if (!mid_entry->multiRsp || mid_entry->multiEnd) mid_entry->callback(mid_entry); - } else if (!is_valid_oplock_break(smb_buffer, server)) { - cERROR(1, "No task to wake, unknown frame received! " - "NumMids %d", atomic_read(&midCount)); + } else if (!server->ops->is_oplock_break || + !server->ops->is_oplock_break(buf, server)) { + cifs_dbg(VFS, "No task to wake, unknown frame received! NumMids %d\n", + atomic_read(&midCount)); cifs_dump_mem("Received Data is: ", buf, - sizeof(struct smb_hdr)); + HEADER_SIZE(server)); #ifdef CONFIG_CIFS_DEBUG2 - cifs_dump_detail(smb_buffer); + if (server->ops->dump_detail) + server->ops->dump_detail(buf); cifs_dump_mids(server); #endif /* CIFS_DEBUG2 */ @@ -924,23 +972,247 @@ extract_hostname(const char *unc) return dst; } +static int get_option_ul(substring_t args[], unsigned long *option) +{ + int rc; + char *string; + + string = match_strdup(args); + if (string == NULL) + return -ENOMEM; + rc = kstrtoul(string, 0, option); + kfree(string); + + return rc; +} + +static int get_option_uid(substring_t args[], kuid_t *result) +{ + unsigned long value; + kuid_t uid; + int rc; + + rc = get_option_ul(args, &value); + if (rc) + return rc; + + uid = make_kuid(current_user_ns(), value); + if (!uid_valid(uid)) + return -EINVAL; + + *result = uid; + return 0; +} + +static int get_option_gid(substring_t args[], kgid_t *result) +{ + unsigned long value; + kgid_t gid; + int rc; + + rc = get_option_ul(args, &value); + if (rc) + return rc; + + gid = make_kgid(current_user_ns(), value); + if (!gid_valid(gid)) + return -EINVAL; + + *result = gid; + return 0; +} + +static int cifs_parse_security_flavors(char *value, + struct smb_vol *vol) +{ + + substring_t args[MAX_OPT_ARGS]; + + /* + * With mount options, the last one should win. Reset any existing + * settings back to default. + */ + vol->sectype = Unspecified; + vol->sign = false; + + switch (match_token(value, cifs_secflavor_tokens, args)) { + case Opt_sec_krb5p: + cifs_dbg(VFS, "sec=krb5p is not supported!\n"); + return 1; + case Opt_sec_krb5i: + vol->sign = true; + /* Fallthrough */ + case Opt_sec_krb5: + vol->sectype = Kerberos; + break; + case Opt_sec_ntlmsspi: + vol->sign = true; + /* Fallthrough */ + case Opt_sec_ntlmssp: + vol->sectype = RawNTLMSSP; + break; + case Opt_sec_ntlmi: + vol->sign = true; + /* Fallthrough */ + case Opt_ntlm: + vol->sectype = NTLM; + break; + case Opt_sec_ntlmv2i: + vol->sign = true; + /* Fallthrough */ + case Opt_sec_ntlmv2: + vol->sectype = NTLMv2; + break; +#ifdef CONFIG_CIFS_WEAK_PW_HASH + case Opt_sec_lanman: + vol->sectype = LANMAN; + break; +#endif + case Opt_sec_none: + vol->nullauth = 1; + break; + default: + cifs_dbg(VFS, "bad security option: %s\n", value); + return 1; + } + + return 0; +} + +static int +cifs_parse_cache_flavor(char *value, struct smb_vol *vol) +{ + substring_t args[MAX_OPT_ARGS]; + + switch (match_token(value, cifs_cacheflavor_tokens, args)) { + case Opt_cache_loose: + vol->direct_io = false; + vol->strict_io = false; + break; + case Opt_cache_strict: + vol->direct_io = false; + vol->strict_io = true; + break; + case Opt_cache_none: + vol->direct_io = true; + vol->strict_io = false; + break; + default: + cifs_dbg(VFS, "bad cache= option: %s\n", value); + return 1; + } + return 0; +} + +static int +cifs_parse_smb_version(char *value, struct smb_vol *vol) +{ + substring_t args[MAX_OPT_ARGS]; + + switch (match_token(value, cifs_smb_version_tokens, args)) { + case Smb_1: + vol->ops = &smb1_operations; + vol->vals = &smb1_values; + break; +#ifdef CONFIG_CIFS_SMB2 + case Smb_20: + vol->ops = &smb20_operations; + vol->vals = &smb20_values; + break; + case Smb_21: + vol->ops = &smb21_operations; + vol->vals = &smb21_values; + break; + case Smb_30: + vol->ops = &smb30_operations; + vol->vals = &smb30_values; + break; + case Smb_302: + vol->ops = &smb30_operations; /* currently identical with 3.0 */ + vol->vals = &smb302_values; + break; +#endif + default: + cifs_dbg(VFS, "Unknown vers= option specified: %s\n", value); + return 1; + } + return 0; +} + +/* + * Parse a devname into substrings and populate the vol->UNC and vol->prepath + * fields with the result. Returns 0 on success and an error otherwise. + */ +static int +cifs_parse_devname(const char *devname, struct smb_vol *vol) +{ + char *pos; + const char *delims = "/\\"; + size_t len; + + /* make sure we have a valid UNC double delimiter prefix */ + len = strspn(devname, delims); + if (len != 2) + return -EINVAL; + + /* find delimiter between host and sharename */ + pos = strpbrk(devname + 2, delims); + if (!pos) + return -EINVAL; + + /* skip past delimiter */ + ++pos; + + /* now go until next delimiter or end of string */ + len = strcspn(pos, delims); + + /* move "pos" up to delimiter or NULL */ + pos += len; + vol->UNC = kstrndup(devname, pos - devname, GFP_KERNEL); + if (!vol->UNC) + return -ENOMEM; + + convert_delimiter(vol->UNC, '\\'); + + /* If pos is NULL, or is a bogus trailing delimiter then no prepath */ + if (!*pos++ || !*pos) + return 0; + + vol->prepath = kstrdup(pos, GFP_KERNEL); + if (!vol->prepath) + return -ENOMEM; + + return 0; +} + static int cifs_parse_mount_options(const char *mountdata, const char *devname, struct smb_vol *vol) { - char *value, *data, *end; + char *data, *end; char *mountdata_copy = NULL, *options; - int err; unsigned int temp_len, i, j; char separator[2]; short int override_uid = -1; short int override_gid = -1; bool uid_specified = false; bool gid_specified = false; + bool sloppy = false; + char *invalid = NULL; char *nodename = utsname()->nodename; + char *string = NULL; + char *tmp_end, *value; + char delim; + bool got_ip = false; + unsigned short port = 0; + struct sockaddr *dstaddr = (struct sockaddr *)&vol->dstaddr; separator[0] = ','; separator[1] = 0; + delim = separator[0]; + + /* ensure we always start with zeroed-out smb_vol */ + memset(vol, 0, sizeof(*vol)); /* * does not have to be perfect mapping since field is @@ -968,8 +1240,15 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, /* default to using server inode numbers where available */ vol->server_ino = 1; + /* default is to use strict cifs caching semantics */ + vol->strict_io = true; + vol->actimeo = CIFS_DEF_ACTIMEO; + /* FIXME: add autonegotiation -- for now, SMB1 is default */ + vol->ops = &smb1_operations; + vol->vals = &smb1_values; + if (!mountdata) goto cifs_parse_mount_err; @@ -979,634 +1258,617 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, options = mountdata_copy; end = options + strlen(options); + if (strncmp(options, "sep=", 4) == 0) { if (options[4] != 0) { separator[0] = options[4]; options += 5; } else { - cFYI(1, "Null separator not allowed"); + cifs_dbg(FYI, "Null separator not allowed\n"); } } vol->backupuid_specified = false; /* no backup intent for a user */ vol->backupgid_specified = false; /* no backup intent for a group */ + switch (cifs_parse_devname(devname, vol)) { + case 0: + break; + case -ENOMEM: + cifs_dbg(VFS, "Unable to allocate memory for devname.\n"); + goto cifs_parse_mount_err; + case -EINVAL: + cifs_dbg(VFS, "Malformed UNC in devname.\n"); + goto cifs_parse_mount_err; + default: + cifs_dbg(VFS, "Unknown error parsing devname.\n"); + goto cifs_parse_mount_err; + } + while ((data = strsep(&options, separator)) != NULL) { + substring_t args[MAX_OPT_ARGS]; + unsigned long option; + int token; + if (!*data) continue; - if ((value = strchr(data, '=')) != NULL) - *value++ = '\0'; - /* Have to parse this before we parse for "user" */ - if (strnicmp(data, "user_xattr", 10) == 0) { + token = match_token(data, cifs_mount_option_tokens, args); + + switch (token) { + + /* Ingnore the following */ + case Opt_ignore: + break; + + /* Boolean values */ + case Opt_user_xattr: vol->no_xattr = 0; - } else if (strnicmp(data, "nouser_xattr", 12) == 0) { + break; + case Opt_nouser_xattr: vol->no_xattr = 1; - } else if (strnicmp(data, "user", 4) == 0) { - if (!value) { - printk(KERN_WARNING - "CIFS: invalid or missing username\n"); - goto cifs_parse_mount_err; - } else if (!*value) { - /* null user, ie anonymous, authentication */ - vol->nullauth = 1; - } - if (strnlen(value, MAX_USERNAME_SIZE) < - MAX_USERNAME_SIZE) { - vol->username = kstrdup(value, GFP_KERNEL); - if (!vol->username) { - printk(KERN_WARNING "CIFS: no memory " - "for username\n"); - goto cifs_parse_mount_err; - } - } else { - printk(KERN_WARNING "CIFS: username too long\n"); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "pass", 4) == 0) { - if (!value) { - vol->password = NULL; - continue; - } else if (value[0] == 0) { - /* check if string begins with double comma - since that would mean the password really - does start with a comma, and would not - indicate an empty string */ - if (value[1] != separator[0]) { - vol->password = NULL; - continue; - } - } - temp_len = strlen(value); - /* removed password length check, NTLM passwords - can be arbitrarily long */ - - /* if comma in password, the string will be - prematurely null terminated. Commas in password are - specified across the cifs mount interface by a double - comma ie ,, and a comma used as in other cases ie ',' - as a parameter delimiter/separator is single and due - to the strsep above is temporarily zeroed. */ - - /* NB: password legally can have multiple commas and - the only illegal character in a password is null */ - - if ((value[temp_len] == 0) && - (value + temp_len < end) && - (value[temp_len+1] == separator[0])) { - /* reinsert comma */ - value[temp_len] = separator[0]; - temp_len += 2; /* move after second comma */ - while (value[temp_len] != 0) { - if (value[temp_len] == separator[0]) { - if (value[temp_len+1] == - separator[0]) { - /* skip second comma */ - temp_len++; - } else { - /* single comma indicating start - of next parm */ - break; - } - } - temp_len++; - } - if (value[temp_len] == 0) { - options = NULL; - } else { - value[temp_len] = 0; - /* point option to start of next parm */ - options = value + temp_len + 1; - } - /* go from value to value + temp_len condensing - double commas to singles. Note that this ends up - allocating a few bytes too many, which is ok */ - vol->password = kzalloc(temp_len, GFP_KERNEL); - if (vol->password == NULL) { - printk(KERN_WARNING "CIFS: no memory " - "for password\n"); - goto cifs_parse_mount_err; - } - for (i = 0, j = 0; i < temp_len; i++, j++) { - vol->password[j] = value[i]; - if (value[i] == separator[0] - && value[i+1] == separator[0]) { - /* skip second comma */ - i++; - } - } - vol->password[j] = 0; - } else { - vol->password = kzalloc(temp_len+1, GFP_KERNEL); - if (vol->password == NULL) { - printk(KERN_WARNING "CIFS: no memory " - "for password\n"); - goto cifs_parse_mount_err; - } - strcpy(vol->password, value); - } - } else if (!strnicmp(data, "ip", 2) || - !strnicmp(data, "addr", 4)) { - if (!value || !*value) { - vol->UNCip = NULL; - } else if (strnlen(value, INET6_ADDRSTRLEN) < - INET6_ADDRSTRLEN) { - vol->UNCip = kstrdup(value, GFP_KERNEL); - if (!vol->UNCip) { - printk(KERN_WARNING "CIFS: no memory " - "for UNC IP\n"); - goto cifs_parse_mount_err; - } - } else { - printk(KERN_WARNING "CIFS: ip address " - "too long\n"); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "sec", 3) == 0) { - if (!value || !*value) { - cERROR(1, "no security value specified"); - continue; - } else if (strnicmp(value, "krb5i", 5) == 0) { - vol->secFlg |= CIFSSEC_MAY_KRB5 | - CIFSSEC_MUST_SIGN; - } else if (strnicmp(value, "krb5p", 5) == 0) { - /* vol->secFlg |= CIFSSEC_MUST_SEAL | - CIFSSEC_MAY_KRB5; */ - cERROR(1, "Krb5 cifs privacy not supported"); - goto cifs_parse_mount_err; - } else if (strnicmp(value, "krb5", 4) == 0) { - vol->secFlg |= CIFSSEC_MAY_KRB5; - } else if (strnicmp(value, "ntlmsspi", 8) == 0) { - vol->secFlg |= CIFSSEC_MAY_NTLMSSP | - CIFSSEC_MUST_SIGN; - } else if (strnicmp(value, "ntlmssp", 7) == 0) { - vol->secFlg |= CIFSSEC_MAY_NTLMSSP; - } else if (strnicmp(value, "ntlmv2i", 7) == 0) { - vol->secFlg |= CIFSSEC_MAY_NTLMV2 | - CIFSSEC_MUST_SIGN; - } else if (strnicmp(value, "ntlmv2", 6) == 0) { - vol->secFlg |= CIFSSEC_MAY_NTLMV2; - } else if (strnicmp(value, "ntlmi", 5) == 0) { - vol->secFlg |= CIFSSEC_MAY_NTLM | - CIFSSEC_MUST_SIGN; - } else if (strnicmp(value, "ntlm", 4) == 0) { - /* ntlm is default so can be turned off too */ - vol->secFlg |= CIFSSEC_MAY_NTLM; - } else if (strnicmp(value, "nontlm", 6) == 0) { - /* BB is there a better way to do this? */ - vol->secFlg |= CIFSSEC_MAY_NTLMV2; -#ifdef CONFIG_CIFS_WEAK_PW_HASH - } else if (strnicmp(value, "lanman", 6) == 0) { - vol->secFlg |= CIFSSEC_MAY_LANMAN; -#endif - } else if (strnicmp(value, "none", 4) == 0) { - vol->nullauth = 1; - } else { - cERROR(1, "bad security option: %s", value); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "vers", 3) == 0) { - if (!value || !*value) { - cERROR(1, "no protocol version specified" - " after vers= mount option"); - } else if ((strnicmp(value, "cifs", 4) == 0) || - (strnicmp(value, "1", 1) == 0)) { - /* this is the default */ - continue; - } - } else if ((strnicmp(data, "unc", 3) == 0) - || (strnicmp(data, "target", 6) == 0) - || (strnicmp(data, "path", 4) == 0)) { - if (!value || !*value) { - printk(KERN_WARNING "CIFS: invalid path to " - "network resource\n"); - goto cifs_parse_mount_err; - } - if ((temp_len = strnlen(value, 300)) < 300) { - vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); - if (vol->UNC == NULL) - goto cifs_parse_mount_err; - strcpy(vol->UNC, value); - if (strncmp(vol->UNC, "//", 2) == 0) { - vol->UNC[0] = '\\'; - vol->UNC[1] = '\\'; - } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { - printk(KERN_WARNING - "CIFS: UNC Path does not begin " - "with // or \\\\ \n"); - goto cifs_parse_mount_err; - } - } else { - printk(KERN_WARNING "CIFS: UNC name too long\n"); - goto cifs_parse_mount_err; - } - } else if ((strnicmp(data, "domain", 3) == 0) - || (strnicmp(data, "workgroup", 5) == 0)) { - if (!value || !*value) { - printk(KERN_WARNING "CIFS: invalid domain name\n"); - goto cifs_parse_mount_err; - } - /* BB are there cases in which a comma can be valid in - a domain name and need special handling? */ - if (strnlen(value, 256) < 256) { - vol->domainname = kstrdup(value, GFP_KERNEL); - if (!vol->domainname) { - printk(KERN_WARNING "CIFS: no memory " - "for domainname\n"); - goto cifs_parse_mount_err; - } - cFYI(1, "Domain name set"); - } else { - printk(KERN_WARNING "CIFS: domain name too " - "long\n"); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "srcaddr", 7) == 0) { - vol->srcaddr.ss_family = AF_UNSPEC; - - if (!value || !*value) { - printk(KERN_WARNING "CIFS: srcaddr value" - " not specified.\n"); - goto cifs_parse_mount_err; - } - i = cifs_convert_address((struct sockaddr *)&vol->srcaddr, - value, strlen(value)); - if (i == 0) { - printk(KERN_WARNING "CIFS: Could not parse" - " srcaddr: %s\n", - value); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "prefixpath", 10) == 0) { - if (!value || !*value) { - printk(KERN_WARNING - "CIFS: invalid path prefix\n"); - goto cifs_parse_mount_err; - } - if ((temp_len = strnlen(value, 1024)) < 1024) { - if (value[0] != '/') - temp_len++; /* missing leading slash */ - vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); - if (vol->prepath == NULL) - goto cifs_parse_mount_err; - if (value[0] != '/') { - vol->prepath[0] = '/'; - strcpy(vol->prepath+1, value); - } else - strcpy(vol->prepath, value); - cFYI(1, "prefix path %s", vol->prepath); - } else { - printk(KERN_WARNING "CIFS: prefix too long\n"); - goto cifs_parse_mount_err; - } - } else if (strnicmp(data, "iocharset", 9) == 0) { - if (!value || !*value) { - printk(KERN_WARNING "CIFS: invalid iocharset " - "specified\n"); - goto cifs_parse_mount_err; - } - if (strnlen(value, 65) < 65) { - if (strnicmp(value, "default", 7)) { - vol->iocharset = kstrdup(value, - GFP_KERNEL); - - if (!vol->iocharset) { - printk(KERN_WARNING "CIFS: no " - "memory for" - "charset\n"); - goto cifs_parse_mount_err; - } - } - /* if iocharset not set then load_nls_default - is used by caller */ - cFYI(1, "iocharset set to %s", value); - } else { - printk(KERN_WARNING "CIFS: iocharset name " - "too long.\n"); - goto cifs_parse_mount_err; - } - } else if (!strnicmp(data, "uid", 3) && value && *value) { - vol->linux_uid = simple_strtoul(value, &value, 0); - uid_specified = true; - } else if (!strnicmp(data, "cruid", 5) && value && *value) { - vol->cred_uid = simple_strtoul(value, &value, 0); - } else if (!strnicmp(data, "forceuid", 8)) { + break; + case Opt_forceuid: override_uid = 1; - } else if (!strnicmp(data, "noforceuid", 10)) { + break; + case Opt_noforceuid: override_uid = 0; - } else if (!strnicmp(data, "gid", 3) && value && *value) { - vol->linux_gid = simple_strtoul(value, &value, 0); - gid_specified = true; - } else if (!strnicmp(data, "forcegid", 8)) { + break; + case Opt_forcegid: override_gid = 1; - } else if (!strnicmp(data, "noforcegid", 10)) { + break; + case Opt_noforcegid: override_gid = 0; - } else if (strnicmp(data, "file_mode", 4) == 0) { - if (value && *value) { - vol->file_mode = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "dir_mode", 4) == 0) { - if (value && *value) { - vol->dir_mode = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "dirmode", 4) == 0) { - if (value && *value) { - vol->dir_mode = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "port", 4) == 0) { - if (value && *value) { - vol->port = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "rsize", 5) == 0) { - if (value && *value) { - vol->rsize = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "wsize", 5) == 0) { - if (value && *value) { - vol->wsize = - simple_strtoul(value, &value, 0); - } - } else if (strnicmp(data, "sockopt", 5) == 0) { - if (!value || !*value) { - cERROR(1, "no socket option specified"); - continue; - } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) { - vol->sockopt_tcp_nodelay = 1; - } - } else if (strnicmp(data, "netbiosname", 4) == 0) { - if (!value || !*value || (*value == ' ')) { - cFYI(1, "invalid (empty) netbiosname"); - } else { - memset(vol->source_rfc1001_name, 0x20, - RFC1001_NAME_LEN); - /* - * FIXME: are there cases in which a comma can - * be valid in workstation netbios name (and - * need special handling)? - */ - for (i = 0; i < RFC1001_NAME_LEN; i++) { - /* don't ucase netbiosname for user */ - if (value[i] == 0) - break; - vol->source_rfc1001_name[i] = value[i]; - } - /* The string has 16th byte zero still from - set at top of the function */ - if (i == RFC1001_NAME_LEN && value[i] != 0) - printk(KERN_WARNING "CIFS: netbiosname" - " longer than 15 truncated.\n"); - } - } else if (strnicmp(data, "servern", 7) == 0) { - /* servernetbiosname specified override *SMBSERVER */ - if (!value || !*value || (*value == ' ')) { - cFYI(1, "empty server netbiosname specified"); - } else { - /* last byte, type, is 0x20 for servr type */ - memset(vol->target_rfc1001_name, 0x20, - RFC1001_NAME_LEN_WITH_NULL); - - for (i = 0; i < 15; i++) { - /* BB are there cases in which a comma can be - valid in this workstation netbios name - (and need special handling)? */ - - /* user or mount helper must uppercase - the netbiosname */ - if (value[i] == 0) - break; - else - vol->target_rfc1001_name[i] = - value[i]; - } - /* The string has 16th byte zero still from - set at top of the function */ - if (i == RFC1001_NAME_LEN && value[i] != 0) - printk(KERN_WARNING "CIFS: server net" - "biosname longer than 15 truncated.\n"); - } - } else if (strnicmp(data, "actimeo", 7) == 0) { - if (value && *value) { - vol->actimeo = HZ * simple_strtoul(value, - &value, 0); - if (vol->actimeo > CIFS_MAX_ACTIMEO) { - cERROR(1, "CIFS: attribute cache" - "timeout too large"); - goto cifs_parse_mount_err; - } - } - } else if (strnicmp(data, "credentials", 4) == 0) { - /* ignore */ - } else if (strnicmp(data, "version", 3) == 0) { - /* ignore */ - } else if (strnicmp(data, "guest", 5) == 0) { - /* ignore */ - } else if (strnicmp(data, "rw", 2) == 0 && strlen(data) == 2) { - /* ignore */ - } else if (strnicmp(data, "ro", 2) == 0) { - /* ignore */ - } else if (strnicmp(data, "noblocksend", 11) == 0) { + break; + case Opt_noblocksend: vol->noblocksnd = 1; - } else if (strnicmp(data, "noautotune", 10) == 0) { + break; + case Opt_noautotune: vol->noautotune = 1; - } else if ((strnicmp(data, "suid", 4) == 0) || - (strnicmp(data, "nosuid", 6) == 0) || - (strnicmp(data, "exec", 4) == 0) || - (strnicmp(data, "noexec", 6) == 0) || - (strnicmp(data, "nodev", 5) == 0) || - (strnicmp(data, "noauto", 6) == 0) || - (strnicmp(data, "dev", 3) == 0)) { - /* The mount tool or mount.cifs helper (if present) - uses these opts to set flags, and the flags are read - by the kernel vfs layer before we get here (ie - before read super) so there is no point trying to - parse these options again and set anything and it - is ok to just ignore them */ - continue; - } else if (strnicmp(data, "hard", 4) == 0) { + break; + case Opt_hard: vol->retry = 1; - } else if (strnicmp(data, "soft", 4) == 0) { + break; + case Opt_soft: vol->retry = 0; - } else if (strnicmp(data, "perm", 4) == 0) { + break; + case Opt_perm: vol->noperm = 0; - } else if (strnicmp(data, "noperm", 6) == 0) { + break; + case Opt_noperm: vol->noperm = 1; - } else if (strnicmp(data, "mapchars", 8) == 0) { + break; + case Opt_mapchars: vol->remap = 1; - } else if (strnicmp(data, "nomapchars", 10) == 0) { + break; + case Opt_nomapchars: vol->remap = 0; - } else if (strnicmp(data, "sfu", 3) == 0) { + break; + case Opt_sfu: vol->sfu_emul = 1; - } else if (strnicmp(data, "nosfu", 5) == 0) { + break; + case Opt_nosfu: vol->sfu_emul = 0; - } else if (strnicmp(data, "nodfs", 5) == 0) { + break; + case Opt_nodfs: vol->nodfs = 1; - } else if (strnicmp(data, "posixpaths", 10) == 0) { + break; + case Opt_posixpaths: vol->posix_paths = 1; - } else if (strnicmp(data, "noposixpaths", 12) == 0) { + break; + case Opt_noposixpaths: vol->posix_paths = 0; - } else if (strnicmp(data, "nounix", 6) == 0) { - vol->no_linux_ext = 1; - } else if (strnicmp(data, "nolinux", 7) == 0) { + break; + case Opt_nounix: vol->no_linux_ext = 1; - } else if ((strnicmp(data, "nocase", 6) == 0) || - (strnicmp(data, "ignorecase", 10) == 0)) { + break; + case Opt_nocase: vol->nocase = 1; - } else if (strnicmp(data, "mand", 4) == 0) { - /* ignore */ - } else if (strnicmp(data, "nomand", 6) == 0) { - /* ignore */ - } else if (strnicmp(data, "_netdev", 7) == 0) { - /* ignore */ - } else if (strnicmp(data, "brl", 3) == 0) { + break; + case Opt_brl: vol->nobrl = 0; - } else if ((strnicmp(data, "nobrl", 5) == 0) || - (strnicmp(data, "nolock", 6) == 0)) { + break; + case Opt_nobrl: vol->nobrl = 1; - /* turn off mandatory locking in mode - if remote locking is turned off since the - local vfs will do advisory */ + /* + * turn off mandatory locking in mode + * if remote locking is turned off since the + * local vfs will do advisory + */ if (vol->file_mode == (S_IALLUGO & ~(S_ISUID | S_IXGRP))) vol->file_mode = S_IALLUGO; - } else if (strnicmp(data, "forcemandatorylock", 9) == 0) { - /* will take the shorter form "forcemand" as well */ - /* This mount option will force use of mandatory - (DOS/Windows style) byte range locks, instead of - using posix advisory byte range locks, even if the - Unix extensions are available and posix locks would - be supported otherwise. If Unix extensions are not - negotiated this has no effect since mandatory locks - would be used (mandatory locks is all that those - those servers support) */ + break; + case Opt_forcemandatorylock: vol->mand_lock = 1; - } else if (strnicmp(data, "setuids", 7) == 0) { + break; + case Opt_setuids: vol->setuids = 1; - } else if (strnicmp(data, "nosetuids", 9) == 0) { + break; + case Opt_nosetuids: vol->setuids = 0; - } else if (strnicmp(data, "dynperm", 7) == 0) { + break; + case Opt_dynperm: vol->dynperm = true; - } else if (strnicmp(data, "nodynperm", 9) == 0) { + break; + case Opt_nodynperm: vol->dynperm = false; - } else if (strnicmp(data, "nohard", 6) == 0) { + break; + case Opt_nohard: vol->retry = 0; - } else if (strnicmp(data, "nosoft", 6) == 0) { + break; + case Opt_nosoft: vol->retry = 1; - } else if (strnicmp(data, "nointr", 6) == 0) { + break; + case Opt_nointr: vol->intr = 0; - } else if (strnicmp(data, "intr", 4) == 0) { + break; + case Opt_intr: vol->intr = 1; - } else if (strnicmp(data, "nostrictsync", 12) == 0) { + break; + case Opt_nostrictsync: vol->nostrictsync = 1; - } else if (strnicmp(data, "strictsync", 10) == 0) { + break; + case Opt_strictsync: vol->nostrictsync = 0; - } else if (strnicmp(data, "serverino", 7) == 0) { + break; + case Opt_serverino: vol->server_ino = 1; - } else if (strnicmp(data, "noserverino", 9) == 0) { + break; + case Opt_noserverino: vol->server_ino = 0; - } else if (strnicmp(data, "rwpidforward", 12) == 0) { + break; + case Opt_rwpidforward: vol->rwpidforward = 1; - } else if (strnicmp(data, "cifsacl", 7) == 0) { + break; + case Opt_cifsacl: vol->cifs_acl = 1; - } else if (strnicmp(data, "nocifsacl", 9) == 0) { + break; + case Opt_nocifsacl: vol->cifs_acl = 0; - } else if (strnicmp(data, "acl", 3) == 0) { + break; + case Opt_acl: vol->no_psx_acl = 0; - } else if (strnicmp(data, "noacl", 5) == 0) { + break; + case Opt_noacl: vol->no_psx_acl = 1; - } else if (strnicmp(data, "locallease", 6) == 0) { + break; + case Opt_locallease: vol->local_lease = 1; - } else if (strnicmp(data, "sign", 4) == 0) { - vol->secFlg |= CIFSSEC_MUST_SIGN; - } else if (strnicmp(data, "seal", 4) == 0) { + break; + case Opt_sign: + vol->sign = true; + break; + case Opt_seal: /* we do not do the following in secFlags because seal - is a per tree connection (mount) not a per socket - or per-smb connection option in the protocol */ - /* vol->secFlg |= CIFSSEC_MUST_SEAL; */ + * is a per tree connection (mount) not a per socket + * or per-smb connection option in the protocol + * vol->secFlg |= CIFSSEC_MUST_SEAL; + */ vol->seal = 1; - } else if (strnicmp(data, "direct", 6) == 0) { - vol->direct_io = 1; - } else if (strnicmp(data, "forcedirectio", 13) == 0) { - vol->direct_io = 1; - } else if (strnicmp(data, "strictcache", 11) == 0) { - vol->strict_io = 1; - } else if (strnicmp(data, "noac", 4) == 0) { + break; + case Opt_noac: printk(KERN_WARNING "CIFS: Mount option noac not " "supported. Instead set " "/proc/fs/cifs/LookupCacheEnabled to 0\n"); - } else if (strnicmp(data, "fsc", 3) == 0) { + break; + case Opt_fsc: #ifndef CONFIG_CIFS_FSCACHE - cERROR(1, "FS-Cache support needs CONFIG_CIFS_FSCACHE " - "kernel config option set"); + cifs_dbg(VFS, "FS-Cache support needs CONFIG_CIFS_FSCACHE kernel config option set\n"); goto cifs_parse_mount_err; #endif vol->fsc = true; - } else if (strnicmp(data, "mfsymlinks", 10) == 0) { + break; + case Opt_mfsymlinks: vol->mfsymlinks = true; - } else if (strnicmp(data, "multiuser", 8) == 0) { + break; + case Opt_multiuser: vol->multiuser = true; - } else if (!strnicmp(data, "backupuid", 9) && value && *value) { - err = kstrtouint(value, 0, &vol->backupuid); - if (err < 0) { - cERROR(1, "%s: Invalid backupuid value", - __func__); + break; + case Opt_sloppy: + sloppy = true; + break; + case Opt_nosharesock: + vol->nosharesock = true; + break; + + /* Numeric Values */ + case Opt_backupuid: + if (get_option_uid(args, &vol->backupuid)) { + cifs_dbg(VFS, "%s: Invalid backupuid value\n", + __func__); goto cifs_parse_mount_err; } vol->backupuid_specified = true; - } else if (!strnicmp(data, "backupgid", 9) && value && *value) { - err = kstrtouint(value, 0, &vol->backupgid); - if (err < 0) { - cERROR(1, "%s: Invalid backupgid value", - __func__); + break; + case Opt_backupgid: + if (get_option_gid(args, &vol->backupgid)) { + cifs_dbg(VFS, "%s: Invalid backupgid value\n", + __func__); goto cifs_parse_mount_err; } vol->backupgid_specified = true; - } else - printk(KERN_WARNING "CIFS: Unknown mount option %s\n", - data); - } - if (vol->UNC == NULL) { - if (devname == NULL) { - printk(KERN_WARNING "CIFS: Missing UNC name for mount " - "target\n"); - goto cifs_parse_mount_err; - } - if ((temp_len = strnlen(devname, 300)) < 300) { - vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); - if (vol->UNC == NULL) + break; + case Opt_uid: + if (get_option_uid(args, &vol->linux_uid)) { + cifs_dbg(VFS, "%s: Invalid uid value\n", + __func__); goto cifs_parse_mount_err; - strcpy(vol->UNC, devname); - if (strncmp(vol->UNC, "//", 2) == 0) { - vol->UNC[0] = '\\'; - vol->UNC[1] = '\\'; - } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { - printk(KERN_WARNING "CIFS: UNC Path does not " - "begin with // or \\\\ \n"); + } + uid_specified = true; + break; + case Opt_cruid: + if (get_option_uid(args, &vol->cred_uid)) { + cifs_dbg(VFS, "%s: Invalid cruid value\n", + __func__); goto cifs_parse_mount_err; } - value = strpbrk(vol->UNC+2, "/\\"); - if (value) - *value = '\\'; - } else { - printk(KERN_WARNING "CIFS: UNC name too long\n"); + break; + case Opt_gid: + if (get_option_gid(args, &vol->linux_gid)) { + cifs_dbg(VFS, "%s: Invalid gid value\n", + __func__); + goto cifs_parse_mount_err; + } + gid_specified = true; + break; + case Opt_file_mode: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid file_mode value\n", + __func__); + goto cifs_parse_mount_err; + } + vol->file_mode = option; + break; + case Opt_dirmode: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid dir_mode value\n", + __func__); + goto cifs_parse_mount_err; + } + vol->dir_mode = option; + break; + case Opt_port: + if (get_option_ul(args, &option) || + option > USHRT_MAX) { + cifs_dbg(VFS, "%s: Invalid port value\n", + __func__); + goto cifs_parse_mount_err; + } + port = (unsigned short)option; + break; + case Opt_rsize: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid rsize value\n", + __func__); + goto cifs_parse_mount_err; + } + vol->rsize = option; + break; + case Opt_wsize: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid wsize value\n", + __func__); + goto cifs_parse_mount_err; + } + vol->wsize = option; + break; + case Opt_actimeo: + if (get_option_ul(args, &option)) { + cifs_dbg(VFS, "%s: Invalid actimeo value\n", + __func__); + goto cifs_parse_mount_err; + } + vol->actimeo = HZ * option; + if (vol->actimeo > CIFS_MAX_ACTIMEO) { + cifs_dbg(VFS, "attribute cache timeout too large\n"); + goto cifs_parse_mount_err; + } + break; + + /* String Arguments */ + + case Opt_blank_user: + /* null user, ie. anonymous authentication */ + vol->nullauth = 1; + vol->username = NULL; + break; + case Opt_user: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (strnlen(string, CIFS_MAX_USERNAME_LEN) > + CIFS_MAX_USERNAME_LEN) { + printk(KERN_WARNING "CIFS: username too long\n"); + goto cifs_parse_mount_err; + } + vol->username = kstrdup(string, GFP_KERNEL); + if (!vol->username) + goto cifs_parse_mount_err; + break; + case Opt_blank_pass: + /* passwords have to be handled differently + * to allow the character used for deliminator + * to be passed within them + */ + + /* + * Check if this is a case where the password + * starts with a delimiter + */ + tmp_end = strchr(data, '='); + tmp_end++; + if (!(tmp_end < end && tmp_end[1] == delim)) { + /* No it is not. Set the password to NULL */ + vol->password = NULL; + break; + } + /* Yes it is. Drop down to Opt_pass below.*/ + case Opt_pass: + /* Obtain the value string */ + value = strchr(data, '='); + value++; + + /* Set tmp_end to end of the string */ + tmp_end = (char *) value + strlen(value); + + /* Check if following character is the deliminator + * If yes, we have encountered a double deliminator + * reset the NULL character to the deliminator + */ + if (tmp_end < end && tmp_end[1] == delim) { + tmp_end[0] = delim; + + /* Keep iterating until we get to a single + * deliminator OR the end + */ + while ((tmp_end = strchr(tmp_end, delim)) + != NULL && (tmp_end[1] == delim)) { + tmp_end = (char *) &tmp_end[2]; + } + + /* Reset var options to point to next element */ + if (tmp_end) { + tmp_end[0] = '\0'; + options = (char *) &tmp_end[1]; + } else + /* Reached the end of the mount option + * string */ + options = end; + } + + /* Now build new password string */ + temp_len = strlen(value); + vol->password = kzalloc(temp_len+1, GFP_KERNEL); + if (vol->password == NULL) { + printk(KERN_WARNING "CIFS: no memory " + "for password\n"); + goto cifs_parse_mount_err; + } + + for (i = 0, j = 0; i < temp_len; i++, j++) { + vol->password[j] = value[i]; + if ((value[i] == delim) && + value[i+1] == delim) + /* skip the second deliminator */ + i++; + } + vol->password[j] = '\0'; + break; + case Opt_blank_ip: + /* FIXME: should this be an error instead? */ + got_ip = false; + break; + case Opt_ip: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (!cifs_convert_address(dstaddr, string, + strlen(string))) { + printk(KERN_ERR "CIFS: bad ip= option (%s).\n", + string); + goto cifs_parse_mount_err; + } + got_ip = true; + break; + case Opt_domain: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (strnlen(string, CIFS_MAX_DOMAINNAME_LEN) + == CIFS_MAX_DOMAINNAME_LEN) { + printk(KERN_WARNING "CIFS: domain name too" + " long\n"); + goto cifs_parse_mount_err; + } + + vol->domainname = kstrdup(string, GFP_KERNEL); + if (!vol->domainname) { + printk(KERN_WARNING "CIFS: no memory " + "for domainname\n"); + goto cifs_parse_mount_err; + } + cifs_dbg(FYI, "Domain name set\n"); + break; + case Opt_srcaddr: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (!cifs_convert_address( + (struct sockaddr *)&vol->srcaddr, + string, strlen(string))) { + printk(KERN_WARNING "CIFS: Could not parse" + " srcaddr: %s\n", string); + goto cifs_parse_mount_err; + } + break; + case Opt_iocharset: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (strnlen(string, 1024) >= 65) { + printk(KERN_WARNING "CIFS: iocharset name " + "too long.\n"); + goto cifs_parse_mount_err; + } + + if (strnicmp(string, "default", 7) != 0) { + vol->iocharset = kstrdup(string, + GFP_KERNEL); + if (!vol->iocharset) { + printk(KERN_WARNING "CIFS: no memory" + "for charset\n"); + goto cifs_parse_mount_err; + } + } + /* if iocharset not set then load_nls_default + * is used by caller + */ + cifs_dbg(FYI, "iocharset set to %s\n", string); + break; + case Opt_netbiosname: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + memset(vol->source_rfc1001_name, 0x20, + RFC1001_NAME_LEN); + /* + * FIXME: are there cases in which a comma can + * be valid in workstation netbios name (and + * need special handling)? + */ + for (i = 0; i < RFC1001_NAME_LEN; i++) { + /* don't ucase netbiosname for user */ + if (string[i] == 0) + break; + vol->source_rfc1001_name[i] = string[i]; + } + /* The string has 16th byte zero still from + * set at top of the function + */ + if (i == RFC1001_NAME_LEN && string[i] != 0) + printk(KERN_WARNING "CIFS: netbiosname" + " longer than 15 truncated.\n"); + + break; + case Opt_servern: + /* servernetbiosname specified override *SMBSERVER */ + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + /* last byte, type, is 0x20 for servr type */ + memset(vol->target_rfc1001_name, 0x20, + RFC1001_NAME_LEN_WITH_NULL); + + /* BB are there cases in which a comma can be + valid in this workstation netbios name + (and need special handling)? */ + + /* user or mount helper must uppercase the + netbios name */ + for (i = 0; i < 15; i++) { + if (string[i] == 0) + break; + vol->target_rfc1001_name[i] = string[i]; + } + /* The string has 16th byte zero still from + set at top of the function */ + if (i == RFC1001_NAME_LEN && string[i] != 0) + printk(KERN_WARNING "CIFS: server net" + "biosname longer than 15 truncated.\n"); + break; + case Opt_ver: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (strnicmp(string, "1", 1) == 0) { + /* This is the default */ + break; + } + /* For all other value, error */ + printk(KERN_WARNING "CIFS: Invalid version" + " specified\n"); goto cifs_parse_mount_err; + case Opt_vers: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (cifs_parse_smb_version(string, vol) != 0) + goto cifs_parse_mount_err; + break; + case Opt_sec: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (cifs_parse_security_flavors(string, vol) != 0) + goto cifs_parse_mount_err; + break; + case Opt_cache: + string = match_strdup(args); + if (string == NULL) + goto out_nomem; + + if (cifs_parse_cache_flavor(string, vol) != 0) + goto cifs_parse_mount_err; + break; + default: + /* + * An option we don't recognize. Save it off for later + * if we haven't already found one + */ + if (!invalid) + invalid = data; + break; } + /* Free up any allocated string */ + kfree(string); + string = NULL; + } + + if (!sloppy && invalid) { + printk(KERN_ERR "CIFS: Unknown mount option \"%s\"\n", invalid); + goto cifs_parse_mount_err; } #ifndef CONFIG_KEYS /* Muliuser mounts require CONFIG_KEYS support */ if (vol->multiuser) { - cERROR(1, "Multiuser mounts require kernels with " - "CONFIG_KEYS enabled."); + cifs_dbg(VFS, "Multiuser mounts require kernels with CONFIG_KEYS enabled\n"); goto cifs_parse_mount_err; } #endif + if (!vol->UNC) { + cifs_dbg(VFS, "CIFS mount error: No usable UNC path provided in device string!\n"); + goto cifs_parse_mount_err; + } + + /* make sure UNC has a share name */ + if (!strchr(vol->UNC + 3, '\\')) { + cifs_dbg(VFS, "Malformed UNC. Unable to find share name.\n"); + goto cifs_parse_mount_err; + } + + if (!got_ip) { + /* No ip= option specified? Try to get it from UNC */ + if (!cifs_convert_address(dstaddr, &vol->UNC[2], + strlen(&vol->UNC[2]))) { + printk(KERN_ERR "Unable to determine destination " + "address.\n"); + goto cifs_parse_mount_err; + } + } - if (vol->UNCip == NULL) - vol->UNCip = &vol->UNC[2]; + /* set the port that we got earlier */ + cifs_set_port(dstaddr, port); if (uid_specified) vol->override_uid = override_uid; @@ -1623,7 +1885,10 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, kfree(mountdata_copy); return 0; +out_nomem: + printk(KERN_WARNING "Could not allocate temporary buffer\n"); cifs_parse_mount_err: + kfree(string); kfree(mountdata_copy); return 1; } @@ -1645,7 +1910,7 @@ srcip_matches(struct sockaddr *srcaddr, struct sockaddr *rhs) } case AF_INET6: { struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *)srcaddr; - struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)&rhs; + struct sockaddr_in6 *vaddr6 = (struct sockaddr_in6 *)rhs; return ipv6_addr_equal(&saddr6->sin6_addr, &vaddr6->sin6_addr); } default: @@ -1729,54 +1994,35 @@ match_address(struct TCP_Server_Info *server, struct sockaddr *addr, static bool match_security(struct TCP_Server_Info *server, struct smb_vol *vol) { - unsigned int secFlags; - - if (vol->secFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) - secFlags = vol->secFlg; - else - secFlags = global_secflags | vol->secFlg; - - switch (server->secType) { - case LANMAN: - if (!(secFlags & (CIFSSEC_MAY_LANMAN|CIFSSEC_MAY_PLNTXT))) - return false; - break; - case NTLMv2: - if (!(secFlags & CIFSSEC_MAY_NTLMV2)) - return false; - break; - case NTLM: - if (!(secFlags & CIFSSEC_MAY_NTLM)) - return false; - break; - case Kerberos: - if (!(secFlags & CIFSSEC_MAY_KRB5)) - return false; - break; - case RawNTLMSSP: - if (!(secFlags & CIFSSEC_MAY_NTLMSSP)) - return false; - break; - default: - /* shouldn't happen */ + /* + * The select_sectype function should either return the vol->sectype + * that was specified, or "Unspecified" if that sectype was not + * compatible with the given NEGOTIATE request. + */ + if (select_sectype(server, vol->sectype) == Unspecified) return false; - } - /* now check if signing mode is acceptable */ - if ((secFlags & CIFSSEC_MAY_SIGN) == 0 && - (server->sec_mode & SECMODE_SIGN_REQUIRED)) - return false; - else if (((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) && - (server->sec_mode & - (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)) == 0) - return false; + /* + * Now check if signing mode is acceptable. No need to check + * global_secflags at this point since if MUST_SIGN is set then + * the server->sign had better be too. + */ + if (vol->sign && !server->sign) + return false; return true; } -static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr, - struct smb_vol *vol) +static int match_server(struct TCP_Server_Info *server, struct smb_vol *vol) { + struct sockaddr *addr = (struct sockaddr *)&vol->dstaddr; + + if (vol->nosharesock) + return 0; + + if ((server->vals != vol->vals) || (server->ops != vol->ops)) + return 0; + if (!net_eq(cifs_net_ns(server), current->nsproxy->net_ns)) return 0; @@ -1794,18 +2040,18 @@ static int match_server(struct TCP_Server_Info *server, struct sockaddr *addr, } static struct TCP_Server_Info * -cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol) +cifs_find_tcp_session(struct smb_vol *vol) { struct TCP_Server_Info *server; spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { - if (!match_server(server, addr, vol)) + if (!match_server(server, vol)) continue; ++server->srv_count; spin_unlock(&cifs_tcp_ses_lock); - cFYI(1, "Existing tcp session with server found"); + cifs_dbg(FYI, "Existing tcp session with server found\n"); return server; } spin_unlock(&cifs_tcp_ses_lock); @@ -1850,40 +2096,12 @@ static struct TCP_Server_Info * cifs_get_tcp_session(struct smb_vol *volume_info) { struct TCP_Server_Info *tcp_ses = NULL; - struct sockaddr_storage addr; - struct sockaddr_in *sin_server = (struct sockaddr_in *) &addr; - struct sockaddr_in6 *sin_server6 = (struct sockaddr_in6 *) &addr; int rc; - memset(&addr, 0, sizeof(struct sockaddr_storage)); - - cFYI(1, "UNC: %s ip: %s", volume_info->UNC, volume_info->UNCip); - - if (volume_info->UNCip && volume_info->UNC) { - rc = cifs_fill_sockaddr((struct sockaddr *)&addr, - volume_info->UNCip, - strlen(volume_info->UNCip), - volume_info->port); - if (!rc) { - /* we failed translating address */ - rc = -EINVAL; - goto out_err; - } - } else if (volume_info->UNCip) { - /* BB using ip addr as tcp_ses name to connect to the - DFS root below */ - cERROR(1, "Connecting to DFS root not implemented yet"); - rc = -EINVAL; - goto out_err; - } else /* which tcp_sess DFS root would we conect to */ { - cERROR(1, "CIFS mount error: No UNC path (e.g. -o " - "unc=//192.168.1.100/public) specified"); - rc = -EINVAL; - goto out_err; - } + cifs_dbg(FYI, "UNC: %s\n", volume_info->UNC); /* see if we already have a matching tcp_ses */ - tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr, volume_info); + tcp_ses = cifs_find_tcp_session(volume_info); if (tcp_ses) return tcp_ses; @@ -1893,12 +2111,8 @@ cifs_get_tcp_session(struct smb_vol *volume_info) goto out_err; } - rc = cifs_crypto_shash_allocate(tcp_ses); - if (rc) { - cERROR(1, "could not setup hash structures rc %d", rc); - goto out_err; - } - + tcp_ses->ops = volume_info->ops; + tcp_ses->vals = volume_info->vals; cifs_set_net_ns(tcp_ses, get_net(current->nsproxy->net_ns)); tcp_ses->hostname = extract_hostname(volume_info->UNC); if (IS_ERR(tcp_ses->hostname)) { @@ -1909,7 +2123,8 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses->noblocksnd = volume_info->noblocksnd; tcp_ses->noautotune = volume_info->noautotune; tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay; - atomic_set(&tcp_ses->inFlight, 0); + tcp_ses->in_flight = 0; + tcp_ses->credits = 1; init_waitqueue_head(&tcp_ses->response_q); init_waitqueue_head(&tcp_ses->request_q); INIT_LIST_HEAD(&tcp_ses->pending_mid_q); @@ -1921,33 +2136,28 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses->session_estab = false; tcp_ses->sequence_number = 0; tcp_ses->lstrp = jiffies; + spin_lock_init(&tcp_ses->req_lock); INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); INIT_LIST_HEAD(&tcp_ses->smb_ses_list); INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); - + memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr, + sizeof(tcp_ses->srcaddr)); + memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr, + sizeof(tcp_ses->dstaddr)); +#ifdef CONFIG_CIFS_SMB2 + get_random_bytes(tcp_ses->client_guid, SMB2_CLIENT_GUID_SIZE); +#endif /* * at this point we are the only ones with the pointer * to the struct since the kernel thread not created yet * no need to spinlock this init of tcpStatus or srv_count */ tcp_ses->tcpStatus = CifsNew; - memcpy(&tcp_ses->srcaddr, &volume_info->srcaddr, - sizeof(tcp_ses->srcaddr)); ++tcp_ses->srv_count; - if (addr.ss_family == AF_INET6) { - cFYI(1, "attempting ipv6 connect"); - /* BB should we allow ipv6 on port 139? */ - /* other OS never observed in Wild doing 139 with v6 */ - memcpy(&tcp_ses->dstaddr, sin_server6, - sizeof(struct sockaddr_in6)); - } else - memcpy(&tcp_ses->dstaddr, sin_server, - sizeof(struct sockaddr_in)); - rc = ip_connect(tcp_ses); if (rc < 0) { - cERROR(1, "Error connecting to socket. Aborting operation"); + cifs_dbg(VFS, "Error connecting to socket. Aborting operation.\n"); goto out_err_crypto_release; } @@ -1960,7 +2170,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses, "cifsd"); if (IS_ERR(tcp_ses->tsk)) { rc = PTR_ERR(tcp_ses->tsk); - cERROR(1, "error %d create cifsd thread", rc); + cifs_dbg(VFS, "error %d create cifsd thread\n", rc); module_put(THIS_MODULE); goto out_err_crypto_release; } @@ -1974,7 +2184,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) cifs_fscache_get_client_cookie(tcp_ses); /* queue echo request delayed work */ - queue_delayed_work(system_nrt_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL); + queue_delayed_work(cifsiod_wq, &tcp_ses->echo, SMB_ECHO_INTERVAL); return tcp_ses; @@ -1996,9 +2206,13 @@ out_err: static int match_session(struct cifs_ses *ses, struct smb_vol *vol) { - switch (ses->server->secType) { + if (vol->sectype != Unspecified && + vol->sectype != ses->sectype) + return 0; + + switch (ses->sectype) { case Kerberos: - if (vol->cred_uid != ses->cred_uid) + if (!uid_eq(vol->cred_uid, ses->cred_uid)) return 0; break; default: @@ -2012,13 +2226,13 @@ static int match_session(struct cifs_ses *ses, struct smb_vol *vol) /* anything else takes username/password */ if (strncmp(ses->user_name, vol->username ? vol->username : "", - MAX_USERNAME_SIZE)) + CIFS_MAX_USERNAME_LEN)) return 0; - if (strlen(vol->username) != 0 && + if ((vol->username && strlen(vol->username) != 0) && ses->password != NULL && strncmp(ses->password, vol->password ? vol->password : "", - MAX_PASSWORD_SIZE)) + CIFS_MAX_PASSWORD_LEN)) return 0; } return 1; @@ -2031,6 +2245,8 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol) spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { + if (ses->status == CifsExiting) + continue; if (!match_session(ses, vol)) continue; ++ses->ses_count; @@ -2044,32 +2260,45 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol) static void cifs_put_smb_ses(struct cifs_ses *ses) { - int xid; + unsigned int rc, xid; struct TCP_Server_Info *server = ses->server; - cFYI(1, "%s: ses_count=%d\n", __func__, ses->ses_count); + cifs_dbg(FYI, "%s: ses_count=%d\n", __func__, ses->ses_count); + spin_lock(&cifs_tcp_ses_lock); + if (ses->status == CifsExiting) { + spin_unlock(&cifs_tcp_ses_lock); + return; + } if (--ses->ses_count > 0) { spin_unlock(&cifs_tcp_ses_lock); return; } + if (ses->status == CifsGood) + ses->status = CifsExiting; + spin_unlock(&cifs_tcp_ses_lock); + if (ses->status == CifsExiting && server->ops->logoff) { + xid = get_xid(); + rc = server->ops->logoff(xid, ses); + if (rc) + cifs_dbg(VFS, "%s: Session Logoff failure rc=%d\n", + __func__, rc); + _free_xid(xid); + } + + spin_lock(&cifs_tcp_ses_lock); list_del_init(&ses->smb_ses_list); spin_unlock(&cifs_tcp_ses_lock); - if (ses->status == CifsGood) { - xid = GetXid(); - CIFSSMBLogoff(xid, ses); - _FreeXid(xid); - } sesInfoFree(ses); cifs_put_tcp_session(server); } #ifdef CONFIG_KEYS -/* strlen("cifs:a:") + INET6_ADDRSTRLEN + 1 */ -#define CIFSCREDS_DESC_SIZE (7 + INET6_ADDRSTRLEN + 1) +/* strlen("cifs:a:") + CIFS_MAX_DOMAINNAME_LEN + 1 */ +#define CIFSCREDS_DESC_SIZE (7 + CIFS_MAX_DOMAINNAME_LEN + 1) /* Populate username and pw fields from keyring if possible */ static int @@ -2099,23 +2328,24 @@ cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses) sprintf(desc, "cifs:a:%pI6c", &sa6->sin6_addr.s6_addr); break; default: - cFYI(1, "Bad ss_family (%hu)", server->dstaddr.ss_family); + cifs_dbg(FYI, "Bad ss_family (%hu)\n", + server->dstaddr.ss_family); rc = -EINVAL; goto out_err; } - cFYI(1, "%s: desc=%s", __func__, desc); + cifs_dbg(FYI, "%s: desc=%s\n", __func__, desc); key = request_key(&key_type_logon, desc, ""); if (IS_ERR(key)) { if (!ses->domainName) { - cFYI(1, "domainName is NULL"); + cifs_dbg(FYI, "domainName is NULL\n"); rc = PTR_ERR(key); goto out_err; } /* didn't work, try to find a domain key */ sprintf(desc, "cifs:d:%s", ses->domainName); - cFYI(1, "%s: desc=%s", __func__, desc); + cifs_dbg(FYI, "%s: desc=%s\n", __func__, desc); key = request_key(&key_type_logon, desc, ""); if (IS_ERR(key)) { rc = PTR_ERR(key); @@ -2133,32 +2363,34 @@ cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses) /* find first : in payload */ payload = (char *)upayload->data; delim = strnchr(payload, upayload->datalen, ':'); - cFYI(1, "payload=%s", payload); + cifs_dbg(FYI, "payload=%s\n", payload); if (!delim) { - cFYI(1, "Unable to find ':' in payload (datalen=%d)", - upayload->datalen); + cifs_dbg(FYI, "Unable to find ':' in payload (datalen=%d)\n", + upayload->datalen); rc = -EINVAL; goto out_key_put; } len = delim - payload; - if (len > MAX_USERNAME_SIZE || len <= 0) { - cFYI(1, "Bad value from username search (len=%zd)", len); + if (len > CIFS_MAX_USERNAME_LEN || len <= 0) { + cifs_dbg(FYI, "Bad value from username search (len=%zd)\n", + len); rc = -EINVAL; goto out_key_put; } vol->username = kstrndup(payload, len, GFP_KERNEL); if (!vol->username) { - cFYI(1, "Unable to allocate %zd bytes for username", len); + cifs_dbg(FYI, "Unable to allocate %zd bytes for username\n", + len); rc = -ENOMEM; goto out_key_put; } - cFYI(1, "%s: username=%s", __func__, vol->username); + cifs_dbg(FYI, "%s: username=%s\n", __func__, vol->username); len = key->datalen - (len + 1); - if (len > MAX_PASSWORD_SIZE || len <= 0) { - cFYI(1, "Bad len for password search (len=%zd)", len); + if (len > CIFS_MAX_PASSWORD_LEN || len <= 0) { + cifs_dbg(FYI, "Bad len for password search (len=%zd)\n", len); rc = -EINVAL; kfree(vol->username); vol->username = NULL; @@ -2168,7 +2400,8 @@ cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses) ++delim; vol->password = kstrndup(delim, len, GFP_KERNEL); if (!vol->password) { - cFYI(1, "Unable to allocate %zd bytes for password", len); + cifs_dbg(FYI, "Unable to allocate %zd bytes for password\n", + len); rc = -ENOMEM; kfree(vol->username); vol->username = NULL; @@ -2180,7 +2413,7 @@ out_key_put: key_put(key); out_err: kfree(desc); - cFYI(1, "%s: returning %d", __func__, rc); + cifs_dbg(FYI, "%s: returning %d\n", __func__, rc); return rc; } #else /* ! CONFIG_KEYS */ @@ -2192,21 +2425,21 @@ cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)), } #endif /* CONFIG_KEYS */ -static bool warned_on_ntlm; /* globals init to false automatically */ - static struct cifs_ses * cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) { - int rc = -ENOMEM, xid; + int rc = -ENOMEM; + unsigned int xid; struct cifs_ses *ses; struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr; struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&server->dstaddr; - xid = GetXid(); + xid = get_xid(); ses = cifs_find_smb_ses(server, volume_info); if (ses) { - cFYI(1, "Existing smb sess found (status=%d)", ses->status); + cifs_dbg(FYI, "Existing smb sess found (status=%d)\n", + ses->status); mutex_lock(&ses->session_mutex); rc = cifs_negotiate_protocol(xid, ses); @@ -2214,18 +2447,18 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) mutex_unlock(&ses->session_mutex); /* problem -- put our ses reference */ cifs_put_smb_ses(ses); - FreeXid(xid); + free_xid(xid); return ERR_PTR(rc); } if (ses->need_reconnect) { - cFYI(1, "Session needs reconnect"); + cifs_dbg(FYI, "Session needs reconnect\n"); rc = cifs_setup_session(xid, ses, volume_info->local_nls); if (rc) { mutex_unlock(&ses->session_mutex); /* problem -- put our reference */ cifs_put_smb_ses(ses); - FreeXid(xid); + free_xid(xid); return ERR_PTR(rc); } } @@ -2233,11 +2466,11 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) /* existing SMB ses has a server reference already */ cifs_put_tcp_session(server); - FreeXid(xid); + free_xid(xid); return ses; } - cFYI(1, "Existing smb sess not found"); + cifs_dbg(FYI, "Existing smb sess not found\n"); ses = sesInfoAlloc(); if (ses == NULL) goto get_ses_fail; @@ -2269,15 +2502,8 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) ses->cred_uid = volume_info->cred_uid; ses->linux_uid = volume_info->linux_uid; - /* ntlmv2 is much stronger than ntlm security, and has been broadly - supported for many years, time to update default security mechanism */ - if ((volume_info->secFlg == 0) && warned_on_ntlm == false) { - warned_on_ntlm = true; - cERROR(1, "default security mechanism requested. The default " - "security mechanism will be upgraded from ntlm to " - "ntlmv2 in kernel release 3.3"); - } - ses->overrideSecFlg = volume_info->secFlg; + ses->sectype = volume_info->sectype; + ses->sign = volume_info->sign; mutex_lock(&ses->session_mutex); rc = cifs_negotiate_protocol(xid, ses); @@ -2292,12 +2518,12 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info) list_add(&ses->smb_ses_list, &server->smb_ses_list); spin_unlock(&cifs_tcp_ses_lock); - FreeXid(xid); + free_xid(xid); return ses; get_ses_fail: sesInfoFree(ses); - FreeXid(xid); + free_xid(xid); return ERR_PTR(rc); } @@ -2332,10 +2558,10 @@ cifs_find_tcon(struct cifs_ses *ses, const char *unc) static void cifs_put_tcon(struct cifs_tcon *tcon) { - int xid; + unsigned int xid; struct cifs_ses *ses = tcon->ses; - cFYI(1, "%s: tc_count=%d\n", __func__, tcon->tc_count); + cifs_dbg(FYI, "%s: tc_count=%d\n", __func__, tcon->tc_count); spin_lock(&cifs_tcp_ses_lock); if (--tcon->tc_count > 0) { spin_unlock(&cifs_tcp_ses_lock); @@ -2345,9 +2571,10 @@ cifs_put_tcon(struct cifs_tcon *tcon) list_del_init(&tcon->tcon_list); spin_unlock(&cifs_tcp_ses_lock); - xid = GetXid(); - CIFSSMBTDis(xid, tcon); - _FreeXid(xid); + xid = get_xid(); + if (ses->server->ops->tree_disconnect) + ses->server->ops->tree_disconnect(xid, tcon); + _free_xid(xid); cifs_fscache_release_super_cookie(tcon); tconInfoFree(tcon); @@ -2362,15 +2589,19 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) tcon = cifs_find_tcon(ses, volume_info->UNC); if (tcon) { - cFYI(1, "Found match on UNC path"); + cifs_dbg(FYI, "Found match on UNC path\n"); /* existing tcon already has a reference */ cifs_put_smb_ses(ses); if (tcon->seal != volume_info->seal) - cERROR(1, "transport encryption setting " - "conflicts with existing tid"); + cifs_dbg(VFS, "transport encryption setting conflicts with existing tid\n"); return tcon; } + if (!ses->server->ops->tree_connect) { + rc = -ENOSYS; + goto out_fail; + } + tcon = tconInfoAlloc(); if (tcon == NULL) { rc = -ENOMEM; @@ -2386,35 +2617,32 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb_vol *volume_info) } } - if (strchr(volume_info->UNC + 3, '\\') == NULL - && strchr(volume_info->UNC + 3, '/') == NULL) { - cERROR(1, "Missing share name"); - rc = -ENODEV; - goto out_fail; - } - - /* BB Do we need to wrap session_mutex around - * this TCon call and Unix SetFS as - * we do on SessSetup and reconnect? */ - xid = GetXid(); - rc = CIFSTCon(xid, ses, volume_info->UNC, tcon, volume_info->local_nls); - FreeXid(xid); - cFYI(1, "CIFS Tcon rc = %d", rc); + /* + * BB Do we need to wrap session_mutex around this TCon call and Unix + * SetFS as we do on SessSetup and reconnect? + */ + xid = get_xid(); + rc = ses->server->ops->tree_connect(xid, ses, volume_info->UNC, tcon, + volume_info->local_nls); + free_xid(xid); + cifs_dbg(FYI, "Tcon rc = %d\n", rc); if (rc) goto out_fail; if (volume_info->nodfs) { tcon->Flags &= ~SMB_SHARE_IS_IN_DFS; - cFYI(1, "DFS disabled (%d)", tcon->Flags); + cifs_dbg(FYI, "DFS disabled (%d)\n", tcon->Flags); } tcon->seal = volume_info->seal; - /* we can have only one retry value for a connection - to a share so for resources mounted more than once - to the same server share the last value passed in - for the retry flag is used */ + /* + * We can have only one retry value for a connection to a share so for + * resources mounted more than once to the same server share the last + * value passed in for the retry flag is used. + */ tcon->retry = volume_info->retry; tcon->nocase = volume_info->nocase; tcon->local_lease = volume_info->local_lease; + INIT_LIST_HEAD(&tcon->pending_opens); spin_lock(&cifs_tcp_ses_lock); list_add(&tcon->tcon_list, &ses->tcon_list); @@ -2476,7 +2704,7 @@ compare_mount_options(struct super_block *sb, struct cifs_mnt_data *mnt_data) if (new->rsize && new->rsize < old->rsize) return 0; - if (old->mnt_uid != new->mnt_uid || old->mnt_gid != new->mnt_gid) + if (!uid_eq(old->mnt_uid, new->mnt_uid) || !gid_eq(old->mnt_gid, new->mnt_gid)) return 0; if (old->mnt_file_mode != new->mnt_file_mode || @@ -2502,11 +2730,8 @@ cifs_match_super(struct super_block *sb, void *data) struct cifs_ses *ses; struct cifs_tcon *tcon; struct tcon_link *tlink; - struct sockaddr_storage addr; int rc = 0; - memset(&addr, 0, sizeof(struct sockaddr_storage)); - spin_lock(&cifs_tcp_ses_lock); cifs_sb = CIFS_SB(sb); tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb)); @@ -2520,17 +2745,7 @@ cifs_match_super(struct super_block *sb, void *data) volume_info = mnt_data->vol; - if (!volume_info->UNCip || !volume_info->UNC) - goto out; - - rc = cifs_fill_sockaddr((struct sockaddr *)&addr, - volume_info->UNCip, - strlen(volume_info->UNCip), - volume_info->port); - if (!rc) - goto out; - - if (!match_server(tcp_srv, (struct sockaddr *)&addr, volume_info) || + if (!match_server(tcp_srv, volume_info) || !match_session(ses, volume_info) || !match_tcon(tcon, volume_info->UNC)) { rc = 0; @@ -2545,37 +2760,42 @@ out: } int -get_dfs_path(int xid, struct cifs_ses *pSesInfo, const char *old_path, - const struct nls_table *nls_codepage, unsigned int *pnum_referrals, - struct dfs_info3_param **preferrals, int remap) +get_dfs_path(const unsigned int xid, struct cifs_ses *ses, const char *old_path, + const struct nls_table *nls_codepage, unsigned int *num_referrals, + struct dfs_info3_param **referrals, int remap) { char *temp_unc; int rc = 0; - *pnum_referrals = 0; - *preferrals = NULL; + if (!ses->server->ops->tree_connect || !ses->server->ops->get_dfs_refer) + return -ENOSYS; + + *num_referrals = 0; + *referrals = NULL; - if (pSesInfo->ipc_tid == 0) { + if (ses->ipc_tid == 0) { temp_unc = kmalloc(2 /* for slashes */ + - strnlen(pSesInfo->serverName, - SERVER_NAME_LEN_WITH_NULL * 2) - + 1 + 4 /* slash IPC$ */ + 2, - GFP_KERNEL); + strnlen(ses->serverName, SERVER_NAME_LEN_WITH_NULL * 2) + + 1 + 4 /* slash IPC$ */ + 2, GFP_KERNEL); if (temp_unc == NULL) return -ENOMEM; temp_unc[0] = '\\'; temp_unc[1] = '\\'; - strcpy(temp_unc + 2, pSesInfo->serverName); - strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); - rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); - cFYI(1, "CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid); + strcpy(temp_unc + 2, ses->serverName); + strcpy(temp_unc + 2 + strlen(ses->serverName), "\\IPC$"); + rc = ses->server->ops->tree_connect(xid, ses, temp_unc, NULL, + nls_codepage); + cifs_dbg(FYI, "Tcon rc = %d ipc_tid = %d\n", rc, ses->ipc_tid); kfree(temp_unc); } if (rc == 0) - rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, - pnum_referrals, nls_codepage, remap); - /* BB map targetUNCs to dfs_info3 structures, here or - in CIFSGetDFSRefer BB */ + rc = ses->server->ops->get_dfs_refer(xid, ses, old_path, + referrals, num_referrals, + nls_codepage, remap); + /* + * BB - map targetUNCs to dfs_info3 structures, here or in + * ses->server->ops->get_dfs_refer. + */ return rc; } @@ -2643,13 +2863,11 @@ bind_socket(struct TCP_Server_Info *server) saddr4 = (struct sockaddr_in *)&server->srcaddr; saddr6 = (struct sockaddr_in6 *)&server->srcaddr; if (saddr6->sin6_family == AF_INET6) - cERROR(1, "cifs: " - "Failed to bind to: %pI6c, error: %d\n", - &saddr6->sin6_addr, rc); + cifs_dbg(VFS, "Failed to bind to: %pI6c, error: %d\n", + &saddr6->sin6_addr, rc); else - cERROR(1, "cifs: " - "Failed to bind to: %pI4, error: %d\n", - &saddr4->sin_addr.s_addr, rc); + cifs_dbg(VFS, "Failed to bind to: %pI4, error: %d\n", + &saddr4->sin_addr.s_addr, rc); } } return rc; @@ -2754,13 +2972,13 @@ generic_ip_connect(struct TCP_Server_Info *server) rc = __sock_create(cifs_net_ns(server), sfamily, SOCK_STREAM, IPPROTO_TCP, &socket, 1); if (rc < 0) { - cERROR(1, "Error %d creating socket", rc); + cifs_dbg(VFS, "Error %d creating socket\n", rc); server->ssocket = NULL; return rc; } /* BB other socket options to set KEEPALIVE, NODELAY? */ - cFYI(1, "Socket created"); + cifs_dbg(FYI, "Socket created\n"); server->ssocket = socket; socket->sk->sk_allocation = GFP_NOFS; if (sfamily == AF_INET6) @@ -2794,16 +3012,17 @@ generic_ip_connect(struct TCP_Server_Info *server) rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY, (char *)&val, sizeof(val)); if (rc) - cFYI(1, "set TCP_NODELAY socket option error %d", rc); + cifs_dbg(FYI, "set TCP_NODELAY socket option error %d\n", + rc); } - cFYI(1, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx", + cifs_dbg(FYI, "sndbuf %d rcvbuf %d rcvtimeo 0x%lx\n", socket->sk->sk_sndbuf, socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo); rc = socket->ops->connect(socket, saddr, slen, 0); if (rc < 0) { - cFYI(1, "Error %d connecting to server", rc); + cifs_dbg(FYI, "Error %d connecting to server\n", rc); sock_release(socket); server->ssocket = NULL; return rc; @@ -2844,7 +3063,7 @@ ip_connect(struct TCP_Server_Info *server) return generic_ip_connect(server); } -void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, +void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, struct cifs_sb_info *cifs_sb, struct smb_vol *vol_info) { /* if we are reconnecting then should we check to see if @@ -2861,19 +3080,19 @@ void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, if (vol_info && vol_info->no_linux_ext) { tcon->fsUnixInfo.Capability = 0; tcon->unix_ext = 0; /* Unix Extensions disabled */ - cFYI(1, "Linux protocol extensions disabled"); + cifs_dbg(FYI, "Linux protocol extensions disabled\n"); return; } else if (vol_info) tcon->unix_ext = 1; /* Unix Extensions supported */ if (tcon->unix_ext == 0) { - cFYI(1, "Unix extensions disabled so not set on reconnect"); + cifs_dbg(FYI, "Unix extensions disabled so not set on reconnect\n"); return; } if (!CIFSSMBQFSUnixInfo(xid, tcon)) { __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); - cFYI(1, "unix caps which server supports %lld", cap); + cifs_dbg(FYI, "unix caps which server supports %lld\n", cap); /* check for reconnect case in which we do not want to change the mount behavior if we can avoid it */ if (vol_info == NULL) { @@ -2883,22 +3102,22 @@ void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, cap &= ~CIFS_UNIX_POSIX_ACL_CAP; if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) - cERROR(1, "POSIXPATH support change"); + cifs_dbg(VFS, "POSIXPATH support change\n"); cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { - cERROR(1, "possible reconnect error"); - cERROR(1, "server disabled POSIX path support"); + cifs_dbg(VFS, "possible reconnect error\n"); + cifs_dbg(VFS, "server disabled POSIX path support\n"); } } if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP) - cERROR(1, "per-share encryption not supported yet"); + cifs_dbg(VFS, "per-share encryption not supported yet\n"); cap &= CIFS_UNIX_CAP_MASK; if (vol_info && vol_info->no_psx_acl) cap &= ~CIFS_UNIX_POSIX_ACL_CAP; else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { - cFYI(1, "negotiated posix acl support"); + cifs_dbg(FYI, "negotiated posix acl support\n"); if (cifs_sb) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIXACL; @@ -2907,43 +3126,38 @@ void reset_cifs_unix_caps(int xid, struct cifs_tcon *tcon, if (vol_info && vol_info->posix_paths == 0) cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { - cFYI(1, "negotiate posix pathnames"); + cifs_dbg(FYI, "negotiate posix pathnames\n"); if (cifs_sb) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS; } - cFYI(1, "Negotiate caps 0x%x", (int)cap); + cifs_dbg(FYI, "Negotiate caps 0x%x\n", (int)cap); #ifdef CONFIG_CIFS_DEBUG2 if (cap & CIFS_UNIX_FCNTL_CAP) - cFYI(1, "FCNTL cap"); + cifs_dbg(FYI, "FCNTL cap\n"); if (cap & CIFS_UNIX_EXTATTR_CAP) - cFYI(1, "EXTATTR cap"); + cifs_dbg(FYI, "EXTATTR cap\n"); if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) - cFYI(1, "POSIX path cap"); + cifs_dbg(FYI, "POSIX path cap\n"); if (cap & CIFS_UNIX_XATTR_CAP) - cFYI(1, "XATTR cap"); + cifs_dbg(FYI, "XATTR cap\n"); if (cap & CIFS_UNIX_POSIX_ACL_CAP) - cFYI(1, "POSIX ACL cap"); + cifs_dbg(FYI, "POSIX ACL cap\n"); if (cap & CIFS_UNIX_LARGE_READ_CAP) - cFYI(1, "very large read cap"); + cifs_dbg(FYI, "very large read cap\n"); if (cap & CIFS_UNIX_LARGE_WRITE_CAP) - cFYI(1, "very large write cap"); + cifs_dbg(FYI, "very large write cap\n"); if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP) - cFYI(1, "transport encryption cap"); + cifs_dbg(FYI, "transport encryption cap\n"); if (cap & CIFS_UNIX_TRANSPORT_ENCRYPTION_MANDATORY_CAP) - cFYI(1, "mandatory transport encryption cap"); + cifs_dbg(FYI, "mandatory transport encryption cap\n"); #endif /* CIFS_DEBUG2 */ if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { if (vol_info == NULL) { - cFYI(1, "resetting capabilities failed"); + cifs_dbg(FYI, "resetting capabilities failed\n"); } else - cERROR(1, "Negotiating Unix capabilities " - "with the server failed. Consider " - "mounting with the Unix Extensions\n" - "disabled, if problems are found, " - "by specifying the nounix mount " - "option."); + cifs_dbg(VFS, "Negotiating Unix capabilities with the server failed. Consider mounting with the Unix Extensions disabled if problems are found by specifying the nounix mount option.\n"); } } @@ -2966,14 +3180,10 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, cifs_sb->mnt_uid = pvolume_info->linux_uid; cifs_sb->mnt_gid = pvolume_info->linux_gid; - if (pvolume_info->backupuid_specified) - cifs_sb->mnt_backupuid = pvolume_info->backupuid; - if (pvolume_info->backupgid_specified) - cifs_sb->mnt_backupgid = pvolume_info->backupgid; cifs_sb->mnt_file_mode = pvolume_info->file_mode; cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; - cFYI(1, "file mode: 0x%hx dir mode: 0x%hx", - cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode); + cifs_dbg(FYI, "file mode: 0x%hx dir mode: 0x%hx\n", + cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode); cifs_sb->actimeo = pvolume_info->actimeo; cifs_sb->local_nls = pvolume_info->local_nls; @@ -3000,10 +3210,14 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD; if (pvolume_info->cifs_acl) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; - if (pvolume_info->backupuid_specified) + if (pvolume_info->backupuid_specified) { cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPUID; - if (pvolume_info->backupgid_specified) + cifs_sb->mnt_backupuid = pvolume_info->backupuid; + } + if (pvolume_info->backupgid_specified) { cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPGID; + cifs_sb->mnt_backupgid = pvolume_info->backupgid; + } if (pvolume_info->override_uid) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; if (pvolume_info->override_gid) @@ -3018,170 +3232,19 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, if (pvolume_info->strict_io) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_STRICT_IO; if (pvolume_info->direct_io) { - cFYI(1, "mounting share using direct i/o"); + cifs_dbg(FYI, "mounting share using direct i/o\n"); cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; } if (pvolume_info->mfsymlinks) { if (pvolume_info->sfu_emul) { - cERROR(1, "mount option mfsymlinks ignored if sfu " - "mount option is used"); + cifs_dbg(VFS, "mount option mfsymlinks ignored if sfu mount option is used\n"); } else { cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MF_SYMLINKS; } } if ((pvolume_info->cifs_acl) && (pvolume_info->dynperm)) - cERROR(1, "mount option dynperm ignored if cifsacl " - "mount option supported"); -} - -/* - * When the server supports very large reads and writes via POSIX extensions, - * we can allow up to 2^24-1, minus the size of a READ/WRITE_AND_X header, not - * including the RFC1001 length. - * - * Note that this might make for "interesting" allocation problems during - * writeback however as we have to allocate an array of pointers for the - * pages. A 16M write means ~32kb page array with PAGE_CACHE_SIZE == 4096. - * - * For reads, there is a similar problem as we need to allocate an array - * of kvecs to handle the receive, though that should only need to be done - * once. - */ -#define CIFS_MAX_WSIZE ((1<<24) - 1 - sizeof(WRITE_REQ) + 4) -#define CIFS_MAX_RSIZE ((1<<24) - sizeof(READ_RSP) + 4) - -/* - * When the server doesn't allow large posix writes, only allow a rsize/wsize - * of 2^17-1 minus the size of the call header. That allows for a read or - * write up to the maximum size described by RFC1002. - */ -#define CIFS_MAX_RFC1002_WSIZE ((1<<17) - 1 - sizeof(WRITE_REQ) + 4) -#define CIFS_MAX_RFC1002_RSIZE ((1<<17) - 1 - sizeof(READ_RSP) + 4) - -/* - * The default wsize is 1M. find_get_pages seems to return a maximum of 256 - * pages in a single call. With PAGE_CACHE_SIZE == 4k, this means we can fill - * a single wsize request with a single call. - */ -#define CIFS_DEFAULT_IOSIZE (1024 * 1024) - -/* - * Windows only supports a max of 60kb reads and 65535 byte writes. Default to - * those values when posix extensions aren't in force. In actuality here, we - * use 65536 to allow for a write that is a multiple of 4k. Most servers seem - * to be ok with the extra byte even though Windows doesn't send writes that - * are that large. - * - * Citation: - * - * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx - */ -#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024) -#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536) - -static unsigned int -cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info) -{ - __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); - struct TCP_Server_Info *server = tcon->ses->server; - unsigned int wsize; - - /* start with specified wsize, or default */ - if (pvolume_info->wsize) - wsize = pvolume_info->wsize; - else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) - wsize = CIFS_DEFAULT_IOSIZE; - else - wsize = CIFS_DEFAULT_NON_POSIX_WSIZE; - - /* can server support 24-bit write sizes? (via UNIX extensions) */ - if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP)) - wsize = min_t(unsigned int, wsize, CIFS_MAX_RFC1002_WSIZE); - - /* - * no CAP_LARGE_WRITE_X or is signing enabled without CAP_UNIX set? - * Limit it to max buffer offered by the server, minus the size of the - * WRITEX header, not including the 4 byte RFC1001 length. - */ - if (!(server->capabilities & CAP_LARGE_WRITE_X) || - (!(server->capabilities & CAP_UNIX) && - (server->sec_mode & (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)))) - wsize = min_t(unsigned int, wsize, - server->maxBuf - sizeof(WRITE_REQ) + 4); - - /* hard limit of CIFS_MAX_WSIZE */ - wsize = min_t(unsigned int, wsize, CIFS_MAX_WSIZE); - - return wsize; -} - -static unsigned int -cifs_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info) -{ - __u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); - struct TCP_Server_Info *server = tcon->ses->server; - unsigned int rsize, defsize; - - /* - * Set default value... - * - * HACK alert! Ancient servers have very small buffers. Even though - * MS-CIFS indicates that servers are only limited by the client's - * bufsize for reads, testing against win98se shows that it throws - * INVALID_PARAMETER errors if you try to request too large a read. - * - * If the server advertises a MaxBufferSize of less than one page, - * assume that it also can't satisfy reads larger than that either. - * - * FIXME: Is there a better heuristic for this? - */ - if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_READ_CAP)) - defsize = CIFS_DEFAULT_IOSIZE; - else if (server->capabilities & CAP_LARGE_READ_X) - defsize = CIFS_DEFAULT_NON_POSIX_RSIZE; - else if (server->maxBuf >= PAGE_CACHE_SIZE) - defsize = CIFSMaxBufSize; - else - defsize = server->maxBuf - sizeof(READ_RSP); - - rsize = pvolume_info->rsize ? pvolume_info->rsize : defsize; - - /* - * no CAP_LARGE_READ_X? Then MS-CIFS states that we must limit this to - * the client's MaxBufferSize. - */ - if (!(server->capabilities & CAP_LARGE_READ_X)) - rsize = min_t(unsigned int, CIFSMaxBufSize, rsize); - - /* hard limit of CIFS_MAX_RSIZE */ - rsize = min_t(unsigned int, rsize, CIFS_MAX_RSIZE); - - return rsize; -} - -static int -is_path_accessible(int xid, struct cifs_tcon *tcon, - struct cifs_sb_info *cifs_sb, const char *full_path) -{ - int rc; - FILE_ALL_INFO *pfile_info; - - pfile_info = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); - if (pfile_info == NULL) - return -ENOMEM; - - rc = CIFSSMBQPathInfo(xid, tcon, full_path, pfile_info, - 0 /* not legacy */, cifs_sb->local_nls, - cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - - if (rc == -EOPNOTSUPP || rc == -EINVAL) - rc = SMBQueryInformation(xid, tcon, full_path, pfile_info, - cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & - CIFS_MOUNT_MAP_SPECIAL_CHR); - kfree(pfile_info); - return rc; + cifs_dbg(VFS, "mount option dynperm ignored if cifsacl mount option supported\n"); } static void @@ -3189,8 +3252,6 @@ cleanup_volume_info_contents(struct smb_vol *volume_info) { kfree(volume_info->username); kzfree(volume_info->password); - if (volume_info->UNCip != volume_info->UNC + 2) - kfree(volume_info->UNCip); kfree(volume_info->UNC); kfree(volume_info->domainname); kfree(volume_info->iocharset); @@ -3208,14 +3269,16 @@ cifs_cleanup_volume_info(struct smb_vol *volume_info) #ifdef CONFIG_CIFS_DFS_UPCALL -/* build_path_to_root returns full path to root when - * we do not have an exiting connection (tcon) */ +/* + * cifs_build_path_to_root returns full path to root when we do not have an + * exiting connection (tcon) + */ static char * build_unc_path_to_root(const struct smb_vol *vol, const struct cifs_sb_info *cifs_sb) { char *full_path, *pos; - unsigned int pplen = vol->prepath ? strlen(vol->prepath) : 0; + unsigned int pplen = vol->prepath ? strlen(vol->prepath) + 1 : 0; unsigned int unc_len = strnlen(vol->UNC, MAX_TREE_SIZE + 1); full_path = kmalloc(unc_len + pplen + 1, GFP_KERNEL); @@ -3226,13 +3289,14 @@ build_unc_path_to_root(const struct smb_vol *vol, pos = full_path + unc_len; if (pplen) { - strncpy(pos, vol->prepath, pplen); + *pos = CIFS_DIR_SEP(cifs_sb); + strncpy(pos + 1, vol->prepath, pplen); pos += pplen; } *pos = '\0'; /* add trailing null */ convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb)); - cFYI(1, "%s: full_path=%s", __func__, full_path); + cifs_dbg(FYI, "%s: full_path=%s\n", __func__, full_path); return full_path; } @@ -3247,7 +3311,7 @@ build_unc_path_to_root(const struct smb_vol *vol, * determine whether there were referrals. */ static int -expand_dfs_referral(int xid, struct cifs_ses *pSesInfo, +expand_dfs_referral(const unsigned int xid, struct cifs_ses *ses, struct smb_vol *volume_info, struct cifs_sb_info *cifs_sb, int check_prefix) { @@ -3263,7 +3327,7 @@ expand_dfs_referral(int xid, struct cifs_ses *pSesInfo, /* For DFS paths, skip the first '\' of the UNC */ ref_path = check_prefix ? full_path + 1 : volume_info->UNC + 1; - rc = get_dfs_path(xid, pSesInfo , ref_path, cifs_sb->local_nls, + rc = get_dfs_path(xid, ses, ref_path, cifs_sb->local_nls, &num_referrals, &referrals, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); @@ -3281,7 +3345,6 @@ expand_dfs_referral(int xid, struct cifs_ses *pSesInfo, mdata = NULL; } else { cleanup_volume_info_contents(volume_info); - memset(volume_info, '\0', sizeof(*volume_info)); rc = cifs_setup_volume_info(volume_info, mdata, fake_devname); } @@ -3304,14 +3367,14 @@ cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, return -EINVAL; if (volume_info->nullauth) { - cFYI(1, "Anonymous login"); + cifs_dbg(FYI, "Anonymous login\n"); kfree(volume_info->username); volume_info->username = NULL; } else if (volume_info->username) { /* BB fixme parse for domain name here */ - cFYI(1, "Username: %s", volume_info->username); + cifs_dbg(FYI, "Username: %s\n", volume_info->username); } else { - cifserror("No username specified"); + cifs_dbg(VFS, "No username specified\n"); /* In userspace mount helper we can get user name from alternate locations such as env variables and files on disk */ return -EINVAL; @@ -3324,7 +3387,7 @@ cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data, } else { volume_info->local_nls = load_nls(volume_info->iocharset); if (volume_info->local_nls == NULL) { - cERROR(1, "CIFS mount error: iocharset %s not found", + cifs_dbg(VFS, "CIFS mount error: iocharset %s not found\n", volume_info->iocharset); return -ELIBACC; } @@ -3339,7 +3402,7 @@ cifs_get_volume_info(char *mount_data, const char *devname) int rc; struct smb_vol *volume_info; - volume_info = kzalloc(sizeof(struct smb_vol), GFP_KERNEL); + volume_info = kmalloc(sizeof(struct smb_vol), GFP_KERNEL); if (!volume_info) return ERR_PTR(-ENOMEM); @@ -3352,30 +3415,14 @@ cifs_get_volume_info(char *mount_data, const char *devname) return volume_info; } -/* make sure ra_pages is a multiple of rsize */ -static inline unsigned int -cifs_ra_pages(struct cifs_sb_info *cifs_sb) -{ - unsigned int reads; - unsigned int rsize_pages = cifs_sb->rsize / PAGE_CACHE_SIZE; - - if (rsize_pages >= default_backing_dev_info.ra_pages) - return default_backing_dev_info.ra_pages; - else if (rsize_pages == 0) - return rsize_pages; - - reads = default_backing_dev_info.ra_pages / rsize_pages; - return reads * rsize_pages; -} - int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info) { - int rc = 0; - int xid; - struct cifs_ses *pSesInfo; + int rc; + unsigned int xid; + struct cifs_ses *ses; struct cifs_tcon *tcon; - struct TCP_Server_Info *srvTcp; + struct TCP_Server_Info *server; char *full_path; struct tcon_link *tlink; #ifdef CONFIG_CIFS_DFS_UPCALL @@ -3392,38 +3439,39 @@ try_mount_again: if (referral_walks_count) { if (tcon) cifs_put_tcon(tcon); - else if (pSesInfo) - cifs_put_smb_ses(pSesInfo); + else if (ses) + cifs_put_smb_ses(ses); - FreeXid(xid); + free_xid(xid); } #endif + rc = 0; tcon = NULL; - pSesInfo = NULL; - srvTcp = NULL; + ses = NULL; + server = NULL; full_path = NULL; tlink = NULL; - xid = GetXid(); + xid = get_xid(); /* get a reference to a tcp session */ - srvTcp = cifs_get_tcp_session(volume_info); - if (IS_ERR(srvTcp)) { - rc = PTR_ERR(srvTcp); + server = cifs_get_tcp_session(volume_info); + if (IS_ERR(server)) { + rc = PTR_ERR(server); bdi_destroy(&cifs_sb->bdi); goto out; } /* get a reference to a SMB session */ - pSesInfo = cifs_get_smb_ses(srvTcp, volume_info); - if (IS_ERR(pSesInfo)) { - rc = PTR_ERR(pSesInfo); - pSesInfo = NULL; + ses = cifs_get_smb_ses(server, volume_info); + if (IS_ERR(ses)) { + rc = PTR_ERR(ses); + ses = NULL; goto mount_fail_check; } /* search for existing tcon to this server share */ - tcon = cifs_get_tcon(pSesInfo, volume_info); + tcon = cifs_get_tcon(ses, volume_info); if (IS_ERR(tcon)) { rc = PTR_ERR(tcon); tcon = NULL; @@ -3431,7 +3479,7 @@ try_mount_again: } /* tell server which Unix caps we support */ - if (tcon->ses->capabilities & CAP_UNIX) { + if (cap_unix(tcon->ses)) { /* reset of caps checks mount to see if unix extensions disabled for just this mount */ reset_cifs_unix_caps(xid, tcon, cifs_sb, volume_info); @@ -3444,17 +3492,15 @@ try_mount_again: } else tcon->unix_ext = 0; /* server does not support them */ - /* do not care if following two calls succeed - informational */ - if (!tcon->ipc) { - CIFSSMBQFSDeviceInfo(xid, tcon); - CIFSSMBQFSAttributeInfo(xid, tcon); - } + /* do not care if a following call succeed - informational */ + if (!tcon->ipc && server->ops->qfs_tcon) + server->ops->qfs_tcon(xid, tcon); - cifs_sb->wsize = cifs_negotiate_wsize(tcon, volume_info); - cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info); + cifs_sb->wsize = server->ops->negotiate_wsize(tcon, volume_info); + cifs_sb->rsize = server->ops->negotiate_rsize(tcon, volume_info); /* tune readahead according to rsize */ - cifs_sb->bdi.ra_pages = cifs_ra_pages(cifs_sb); + cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE; remote_path_check: #ifdef CONFIG_CIFS_DFS_UPCALL @@ -3466,8 +3512,8 @@ remote_path_check: * Chase the referral if found, otherwise continue normally. */ if (referral_walks_count == 0) { - int refrc = expand_dfs_referral(xid, pSesInfo, volume_info, - cifs_sb, false); + int refrc = expand_dfs_referral(xid, ses, volume_info, cifs_sb, + false); if (!refrc) { referral_walks_count++; goto try_mount_again; @@ -3477,13 +3523,20 @@ remote_path_check: /* check if a whole path is not remote */ if (!rc && tcon) { - /* build_path_to_root works only when we have a valid tcon */ + if (!server->ops->is_path_accessible) { + rc = -ENOSYS; + goto mount_fail_check; + } + /* + * cifs_build_path_to_root works only when we have a valid tcon + */ full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon); if (full_path == NULL) { rc = -ENOMEM; goto mount_fail_check; } - rc = is_path_accessible(xid, tcon, cifs_sb, full_path); + rc = server->ops->is_path_accessible(xid, tcon, cifs_sb, + full_path); if (rc != 0 && rc != -EREMOTE) { kfree(full_path); goto mount_fail_check; @@ -3505,8 +3558,7 @@ remote_path_check: goto mount_fail_check; } - rc = expand_dfs_referral(xid, pSesInfo, volume_info, cifs_sb, - true); + rc = expand_dfs_referral(xid, ses, volume_info, cifs_sb, true); if (!rc) { referral_walks_count++; @@ -3528,7 +3580,7 @@ remote_path_check: goto mount_fail_check; } - tlink->tl_uid = pSesInfo->linux_uid; + tlink->tl_uid = ses->linux_uid; tlink->tl_tcon = tcon; tlink->tl_time = jiffies; set_bit(TCON_LINK_MASTER, &tlink->tl_flags); @@ -3539,7 +3591,7 @@ remote_path_check: tlink_rb_insert(&cifs_sb->tlink_tree, tlink); spin_unlock(&cifs_sb->tlink_tree_lock); - queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, + queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks, TLINK_IDLE_EXPIRE); mount_fail_check: @@ -3549,15 +3601,15 @@ mount_fail_check: /* up accidentally freeing someone elses tcon struct */ if (tcon) cifs_put_tcon(tcon); - else if (pSesInfo) - cifs_put_smb_ses(pSesInfo); + else if (ses) + cifs_put_smb_ses(ses); else - cifs_put_tcp_session(srvTcp); + cifs_put_tcp_session(server); bdi_destroy(&cifs_sb->bdi); } out: - FreeXid(xid); + free_xid(xid); return rc; } @@ -3566,7 +3618,7 @@ out: * pointer may be NULL. */ int -CIFSTCon(unsigned int xid, struct cifs_ses *ses, +CIFSTCon(const unsigned int xid, struct cifs_ses *ses, const char *tree, struct cifs_tcon *tcon, const struct nls_table *nls_codepage) { @@ -3591,7 +3643,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, NULL /*no tid */ , 4 /*wct */ ); - smb_buffer->Mid = GetNextMid(ses->server); + smb_buffer->Mid = get_next_mid(ses->server); smb_buffer->Uid = ses->Suid; pSMB = (TCONX_REQ *) smb_buffer; pSMBr = (TCONX_RSP *) smb_buffer_response; @@ -3614,7 +3666,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, NTLMv2 password here) */ #ifdef CONFIG_CIFS_WEAK_PW_HASH if ((global_secflags & CIFSSEC_MAY_LANMAN) && - (ses->server->secType == LANMAN)) + (ses->sectype == LANMAN)) calc_lanman_hash(tcon->password, ses->server->cryptkey, ses->server->sec_mode & SECMODE_PW_ENCRYPT ? true : false, @@ -3632,8 +3684,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, } } - if (ses->server->sec_mode & - (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) + if (ses->server->sign) smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; if (ses->capabilities & CAP_STATUS32) { @@ -3685,18 +3736,18 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, if (length == 3) { if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && (bcc_ptr[2] == 'C')) { - cFYI(1, "IPC connection"); + cifs_dbg(FYI, "IPC connection\n"); tcon->ipc = 1; } } else if (length == 2) { if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { /* the most common case */ - cFYI(1, "disk share connection"); + cifs_dbg(FYI, "disk share connection\n"); } } bcc_ptr += length + 1; bytes_left -= (length + 1); - strncpy(tcon->treeName, tree, MAX_TREE_SIZE); + strlcpy(tcon->treeName, tree, sizeof(tcon->treeName)); /* mostly informational -- no need to fail on error here */ kfree(tcon->nativeFileSystem); @@ -3704,7 +3755,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, bytes_left, is_unicode, nls_codepage); - cFYI(1, "nativeFileSystem=%s", tcon->nativeFileSystem); + cifs_dbg(FYI, "nativeFileSystem=%s\n", tcon->nativeFileSystem); if ((smb_buffer_response->WordCount == 3) || (smb_buffer_response->WordCount == 7)) @@ -3712,7 +3763,7 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); else tcon->Flags = 0; - cFYI(1, "Tcon flags: 0x%x ", tcon->Flags); + cifs_dbg(FYI, "Tcon flags: 0x%x\n", tcon->Flags); } else if ((rc == 0) && tcon == NULL) { /* all we need to save for IPC$ connection */ ses->ipc_tid = smb_buffer_response->Tid; @@ -3722,6 +3773,13 @@ CIFSTCon(unsigned int xid, struct cifs_ses *ses, return rc; } +static void delayed_free(struct rcu_head *p) +{ + struct cifs_sb_info *sbi = container_of(p, struct cifs_sb_info, rcu); + unload_nls(sbi->local_nls); + kfree(sbi); +} + void cifs_umount(struct cifs_sb_info *cifs_sb) { @@ -3746,26 +3804,25 @@ cifs_umount(struct cifs_sb_info *cifs_sb) bdi_destroy(&cifs_sb->bdi); kfree(cifs_sb->mountdata); - unload_nls(cifs_sb->local_nls); - kfree(cifs_sb); + call_rcu(&cifs_sb->rcu, delayed_free); } -int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses) +int +cifs_negotiate_protocol(const unsigned int xid, struct cifs_ses *ses) { int rc = 0; struct TCP_Server_Info *server = ses->server; + if (!server->ops->need_neg || !server->ops->negotiate) + return -ENOSYS; + /* only send once per connect */ - if (server->maxBuf != 0) + if (!server->ops->need_neg(server)) return 0; - rc = CIFSSMBNegotiate(xid, ses); - if (rc == -EAGAIN) { - /* retry only once on 1st time connection */ - rc = CIFSSMBNegotiate(xid, ses); - if (rc == -EAGAIN) - rc = -EHOSTDOWN; - } + set_credits(server, 1); + + rc = server->ops->negotiate(xid, ses); if (rc == 0) { spin_lock(&GlobalMid_Lock); if (server->tcpStatus == CifsNeedNegotiate) @@ -3773,53 +3830,30 @@ int cifs_negotiate_protocol(unsigned int xid, struct cifs_ses *ses) else rc = -EHOSTDOWN; spin_unlock(&GlobalMid_Lock); - } return rc; } - -int cifs_setup_session(unsigned int xid, struct cifs_ses *ses, - struct nls_table *nls_info) +int +cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, + struct nls_table *nls_info) { - int rc = 0; + int rc = -ENOSYS; struct TCP_Server_Info *server = ses->server; - ses->flags = 0; ses->capabilities = server->capabilities; if (linuxExtEnabled == 0) - ses->capabilities &= (~CAP_UNIX); + ses->capabilities &= (~server->vals->cap_unix); - cFYI(1, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", + cifs_dbg(FYI, "Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d\n", server->sec_mode, server->capabilities, server->timeAdj); - rc = CIFS_SessSetup(xid, ses, nls_info); - if (rc) { - cERROR(1, "Send error in SessSetup = %d", rc); - } else { - mutex_lock(&ses->server->srv_mutex); - if (!server->session_estab) { - server->session_key.response = ses->auth_key.response; - server->session_key.len = ses->auth_key.len; - server->sequence_number = 0x2; - server->session_estab = true; - ses->auth_key.response = NULL; - } - mutex_unlock(&server->srv_mutex); - - cFYI(1, "CIFS Session Established successfully"); - spin_lock(&GlobalMid_Lock); - ses->status = CifsGood; - ses->need_reconnect = false; - spin_unlock(&GlobalMid_Lock); - } + if (server->ops->sess_setup) + rc = server->ops->sess_setup(xid, ses, nls_info); - kfree(ses->auth_key.response); - ses->auth_key.response = NULL; - ses->auth_key.len = 0; - kfree(ses->ntlmssp); - ses->ntlmssp = NULL; + if (rc) + cifs_dbg(VFS, "Send error in SessSetup = %d\n", rc); return rc; } @@ -3827,29 +3861,17 @@ int cifs_setup_session(unsigned int xid, struct cifs_ses *ses, static int cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses) { - switch (ses->server->secType) { - case Kerberos: - vol->secFlg = CIFSSEC_MUST_KRB5; + vol->sectype = ses->sectype; + + /* krb5 is special, since we don't need username or pw */ + if (vol->sectype == Kerberos) return 0; - case NTLMv2: - vol->secFlg = CIFSSEC_MUST_NTLMV2; - break; - case NTLM: - vol->secFlg = CIFSSEC_MUST_NTLM; - break; - case RawNTLMSSP: - vol->secFlg = CIFSSEC_MUST_NTLMSSP; - break; - case LANMAN: - vol->secFlg = CIFSSEC_MUST_LANMAN; - break; - } return cifs_set_cifscreds(vol, ses); } static struct cifs_tcon * -cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) +cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) { int rc; struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb); @@ -3869,6 +3891,8 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) vol_info->nocase = master_tcon->nocase; vol_info->local_lease = master_tcon->local_lease; vol_info->no_linux_ext = !master_tcon->unix_ext; + vol_info->sectype = master_tcon->ses->sectype; + vol_info->sign = master_tcon->ses->sign; rc = cifs_set_vol_auth(vol_info, master_tcon->ses); if (rc) { @@ -3894,7 +3918,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid) goto out; } - if (ses->capabilities & CAP_UNIX) + if (cap_unix(ses)) reset_cifs_unix_caps(0, tcon, NULL, vol_info); out: kfree(vol_info->username); @@ -3919,7 +3943,7 @@ cifs_sb_tcon_pending_wait(void *unused) /* find and return a tlink with given uid */ static struct tcon_link * -tlink_rb_search(struct rb_root *root, uid_t uid) +tlink_rb_search(struct rb_root *root, kuid_t uid) { struct rb_node *node = root->rb_node; struct tcon_link *tlink; @@ -3927,9 +3951,9 @@ tlink_rb_search(struct rb_root *root, uid_t uid) while (node) { tlink = rb_entry(node, struct tcon_link, tl_rbnode); - if (tlink->tl_uid > uid) + if (uid_gt(tlink->tl_uid, uid)) node = node->rb_left; - else if (tlink->tl_uid < uid) + else if (uid_lt(tlink->tl_uid, uid)) node = node->rb_right; else return tlink; @@ -3948,7 +3972,7 @@ tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink) tlink = rb_entry(*new, struct tcon_link, tl_rbnode); parent = *new; - if (tlink->tl_uid > new_tlink->tl_uid) + if (uid_gt(tlink->tl_uid, new_tlink->tl_uid)) new = &((*new)->rb_left); else new = &((*new)->rb_right); @@ -3978,7 +4002,7 @@ struct tcon_link * cifs_sb_tlink(struct cifs_sb_info *cifs_sb) { int ret; - uid_t fsuid = current_fsuid(); + kuid_t fsuid = current_fsuid(); struct tcon_link *tlink, *newtlink; if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) @@ -4091,6 +4115,6 @@ cifs_prune_tlinks(struct work_struct *work) } spin_unlock(&cifs_sb->tlink_tree_lock); - queue_delayed_work(system_nrt_wq, &cifs_sb->prune_tlinks, + queue_delayed_work(cifsiod_wq, &cifs_sb->prune_tlinks, TLINK_IDLE_EXPIRE); } |