4 * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
5 * Copyright (C) 1997 by Volker Lendecke
7 * Please add a note about your changes to smbfs in the ChangeLog file.
10 #include <linux/types.h>
11 #include <linux/errno.h>
12 #include <linux/slab.h>
14 #include <linux/file.h>
15 #include <linux/stat.h>
16 #include <linux/fcntl.h>
17 #include <linux/dcache.h>
18 #include <linux/dirent.h>
19 #include <linux/nls.h>
20 #include <linux/smp_lock.h>
21 #include <linux/net.h>
22 #include <linux/vfs.h>
23 #include <linux/smb_fs.h>
24 #include <linux/smbno.h>
25 #include <linux/smb_mount.h>
29 #include <asm/string.h>
30 #include <asm/div64.h>
32 #include "smb_debug.h"
37 /* Features. Undefine if they cause problems, this should perhaps be a
39 #define SMBFS_POSIX_UNLINK 1
41 /* Allow smb_retry to be interrupted. */
42 #define SMB_RETRY_INTR
44 #define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)
45 #define SMB_CMD(packet) (*(packet+8))
46 #define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1))
48 #define SMB_DIRINFO_SIZE 43
49 #define SMB_STATUS_SIZE 21
51 #define SMB_ST_BLKSIZE (PAGE_SIZE)
52 #define SMB_ST_BLKSHIFT (PAGE_SHIFT)
54 static struct smb_ops smb_ops_core;
55 static struct smb_ops smb_ops_os2;
56 static struct smb_ops smb_ops_win95;
57 static struct smb_ops smb_ops_winNT;
58 static struct smb_ops smb_ops_unix;
59 static struct smb_ops smb_ops_null;
62 smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
64 smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
66 smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
67 struct smb_fattr *fattr);
69 smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
70 struct smb_fattr *fattr);
72 smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
75 smb_proc_setattr_ext(struct smb_sb_info *server,
76 struct inode *inode, struct smb_fattr *fattr);
78 smb_proc_query_cifsunix(struct smb_sb_info *server);
80 install_ops(struct smb_ops *dst, struct smb_ops *src);
84 str_upper(char *name, int len)
88 if (*name >= 'a' && *name <= 'z')
96 str_lower(char *name, int len)
100 if (*name >= 'A' && *name <= 'Z')
101 *name += ('a' - 'A');
107 /* reverse a string inline. This is used by the dircache walking routines */
108 static void reverse_string(char *buf, int len)
111 char *end = buf+len-1;
120 /* no conversion, just a wrapper for memcpy. */
121 static int convert_memcpy(unsigned char *output, int olen,
122 const unsigned char *input, int ilen,
123 struct nls_table *nls_from,
124 struct nls_table *nls_to)
127 return -ENAMETOOLONG;
128 memcpy(output, input, ilen);
132 static inline int write_char(unsigned char ch, char *output, int olen)
135 return -ENAMETOOLONG;
136 sprintf(output, ":x%02x", ch);
140 static inline int write_unichar(wchar_t ch, char *output, int olen)
143 return -ENAMETOOLONG;
144 sprintf(output, ":%04x", ch);
148 /* convert from one "codepage" to another (possibly being utf8). */
149 static int convert_cp(unsigned char *output, int olen,
150 const unsigned char *input, int ilen,
151 struct nls_table *nls_from,
152 struct nls_table *nls_to)
159 /* convert by changing to unicode and back to the new cp */
160 n = nls_from->char2uni(input, ilen, &ch);
163 n = write_char(*input++, output, olen);
175 n = nls_to->uni2char(ch, output, olen);
177 n = write_unichar(ch, output, olen);
190 /* ----------------------------------------------------------- */
195 * This encodes/decodes little endian unicode format
198 static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
207 static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
211 *uni = (rawstring[1] << 8) | rawstring[0];
215 static struct nls_table unicode_table = {
216 .charset = "unicode",
217 .uni2char = uni2char,
218 .char2uni = char2uni,
221 /* ----------------------------------------------------------- */
223 static int setcodepage(struct nls_table **p, char *name)
225 struct nls_table *nls;
227 if (!name || !*name) {
229 } else if ( (nls = load_nls(name)) == NULL) {
230 printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name);
234 /* if already set, unload the previous one. */
235 if (*p && *p != &unicode_table)
242 /* Handles all changes to codepage settings. */
243 int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp)
247 smb_lock_server(server);
249 /* Don't load any nls_* at all, if no remote is requested */
250 if (!*cp->remote_name)
254 n = setcodepage(&server->local_nls, cp->local_name);
259 if (!strcmp(cp->remote_name, "unicode")) {
260 server->remote_nls = &unicode_table;
262 n = setcodepage(&server->remote_nls, cp->remote_name);
264 setcodepage(&server->local_nls, NULL);
268 if (server->local_nls != NULL && server->remote_nls != NULL)
269 server->ops->convert = convert_cp;
271 server->ops->convert = convert_memcpy;
273 smb_unlock_server(server);
278 /*****************************************************************************/
280 /* Encoding/Decoding section */
282 /*****************************************************************************/
285 smb_encode_smb_length(__u8 * p, __u32 len)
289 *(p+2) = (len & 0xFF00) >> 8;
290 *(p+3) = (len & 0xFF);
299 * smb_build_path: build the path to entry and name storing it in buf.
300 * The path returned will have the trailing '\0'.
302 static int smb_build_path(struct smb_sb_info *server, unsigned char *buf,
304 struct dentry *entry, struct qstr *name)
306 unsigned char *path = buf;
308 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0;
310 if (maxlen < (2<<unicode))
311 return -ENAMETOOLONG;
313 if (maxlen > SMB_MAXPATHLEN + 1)
314 maxlen = SMB_MAXPATHLEN + 1;
317 goto test_name_and_out;
320 * If IS_ROOT, we have to do no walking at all.
322 if (IS_ROOT(entry) && !name) {
324 if (unicode) *path++ = '\0';
326 if (unicode) *path++ = '\0';
331 * Build the path string walking the tree backward from end to ROOT
332 * and store it in reversed order [see reverse_string()]
335 spin_lock(&entry->d_lock);
336 while (!IS_ROOT(entry)) {
337 struct dentry *parent;
339 if (maxlen < (3<<unicode)) {
340 spin_unlock(&entry->d_lock);
342 return -ENAMETOOLONG;
345 len = server->ops->convert(path, maxlen-2,
346 entry->d_name.name, entry->d_name.len,
347 server->local_nls, server->remote_nls);
349 spin_unlock(&entry->d_lock);
353 reverse_string(path, len);
356 /* Note: reverse order */
363 parent = entry->d_parent;
365 spin_unlock(&entry->d_lock);
368 spin_lock(&entry->d_lock);
370 spin_unlock(&entry->d_lock);
372 reverse_string(buf, path-buf);
374 /* maxlen has space for at least one char */
377 if (maxlen < (3<<unicode))
378 return -ENAMETOOLONG;
384 len = server->ops->convert(path, maxlen-2,
385 name->name, name->len,
386 server->local_nls, server->remote_nls);
392 /* maxlen has space for at least one char */
394 if (unicode) *path++ = '\0';
398 static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen,
399 struct dentry *dir, struct qstr *name)
403 result = smb_build_path(server, buf, maxlen, dir, name);
406 if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS)
407 str_upper(buf, result);
412 /* encode_path for non-trans2 request SMBs */
413 static int smb_simple_encode_path(struct smb_request *req, char **p,
414 struct dentry * entry, struct qstr * name)
416 struct smb_sb_info *server = req->rq_server;
419 int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s;
420 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
423 return -ENAMETOOLONG;
424 *s++ = 4; /* ASCII data format */
427 * SMB Unicode strings must be 16bit aligned relative the start of the
428 * packet. If they are not they must be padded with 0.
431 int align = s - (char *)req->rq_buffer;
438 res = smb_encode_path(server, s, maxlen-1, entry, name);
445 /* The following are taken directly from msdos-fs */
447 /* Linear day numbers of the respective 1sts in non-leap years. */
450 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
451 /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
455 utc2local(struct smb_sb_info *server, time_t time)
457 return time - server->opt.serverzone*60;
461 local2utc(struct smb_sb_info *server, time_t time)
463 return time + server->opt.serverzone*60;
466 /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
469 date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time)
474 /* first subtract and mask after that... Otherwise, if
475 date == 0, bad things happen */
476 month = ((date >> 5) - 1) & 15;
478 secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
479 ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
480 month < 2 ? 1 : 0) + 3653);
481 /* days since 1.1.70 plus 80's leap day */
482 return local2utc(server, secs);
486 /* Convert linear UNIX date to a MS-DOS time/date pair. */
489 date_unix2dos(struct smb_sb_info *server,
490 int unix_date, __u16 *date, __u16 *time)
492 int day, year, nl_day, month;
494 unix_date = utc2local(server, unix_date);
495 if (unix_date < 315532800)
496 unix_date = 315532800;
498 *time = (unix_date % 60) / 2 +
499 (((unix_date / 60) % 60) << 5) +
500 (((unix_date / 3600) % 24) << 11);
502 day = unix_date / 86400 - 3652;
504 if ((year + 3) / 4 + 365 * year > day)
506 day -= (year + 3) / 4 + 365 * year;
507 if (day == 59 && !(year & 3)) {
511 nl_day = (year & 3) || day <= 59 ? day : day - 1;
512 for (month = 0; month < 12; month++)
513 if (day_n[month] > nl_day)
516 *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9);
519 /* The following are taken from fs/ntfs/util.c */
521 #define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
524 * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
525 * into Unix UTC (based 1970-01-01, in seconds).
527 static struct timespec
528 smb_ntutc2unixutc(u64 ntutc)
531 /* FIXME: what about the timezone difference? */
532 /* Subtract the NTFS time offset, then convert to 1s intervals. */
533 u64 t = ntutc - NTFS_TIME_OFFSET;
534 ts.tv_nsec = do_div(t, 10000000) * 100;
539 /* Convert the Unix UTC into NT time */
541 smb_unixutc2ntutc(struct timespec ts)
543 /* Note: timezone conversion is probably wrong. */
544 /* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */
545 return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET;
548 #define MAX_FILE_MODE 6
549 static mode_t file_mode[] = {
550 S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK
553 static int smb_filetype_to_mode(u32 filetype)
555 if (filetype > MAX_FILE_MODE) {
556 PARANOIA("Filetype out of range: %d\n", filetype);
559 return file_mode[filetype];
562 static u32 smb_filetype_from_mode(int mode)
565 return UNIX_TYPE_FILE;
567 return UNIX_TYPE_DIR;
569 return UNIX_TYPE_SYMLINK;
571 return UNIX_TYPE_CHARDEV;
573 return UNIX_TYPE_BLKDEV;
575 return UNIX_TYPE_FIFO;
577 return UNIX_TYPE_SOCKET;
578 return UNIX_TYPE_UNKNOWN;
582 /*****************************************************************************/
584 /* Support section. */
586 /*****************************************************************************/
591 return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3);
595 smb_bcc(__u8 * packet)
597 int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16);
598 return WVAL(packet, pos);
601 /* smb_valid_packet: We check if packet fulfills the basic
602 requirements of a smb packet */
605 smb_valid_packet(__u8 * packet)
607 return (packet[4] == 0xff
611 && (smb_len(packet) + 4 == SMB_HEADER_LEN
612 + SMB_WCT(packet) * 2 + smb_bcc(packet)));
615 /* smb_verify: We check if we got the answer we expected, and if we
616 got enough data. If bcc == -1, we don't care. */
619 smb_verify(__u8 * packet, int command, int wct, int bcc)
621 if (SMB_CMD(packet) != command)
623 if (SMB_WCT(packet) < wct)
625 if (bcc != -1 && smb_bcc(packet) < bcc)
630 printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n",
631 command, SMB_CMD(packet));
634 printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n",
635 command, wct, SMB_WCT(packet));
638 printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n",
639 command, bcc, smb_bcc(packet));
645 * Returns the maximum read or write size for the "payload". Making all of the
646 * packet fit within the negotiated max_xmit size.
648 * N.B. Since this value is usually computed before locking the server,
649 * the server's packet size must never be decreased!
652 smb_get_xmitsize(struct smb_sb_info *server, int overhead)
654 return server->opt.max_xmit - overhead;
658 * Calculate the maximum read size
661 smb_get_rsize(struct smb_sb_info *server)
663 /* readX has 12 parameters, read has 5 */
664 int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2;
665 int size = smb_get_xmitsize(server, overhead);
667 VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
673 * Calculate the maximum write size
676 smb_get_wsize(struct smb_sb_info *server)
678 /* writeX has 14 parameters, write has 5 */
679 int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2;
680 int size = smb_get_xmitsize(server, overhead);
682 VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
688 * Convert SMB error codes to -E... errno values.
691 smb_errno(struct smb_request *req)
693 int errcls = req->rq_rcls;
694 int error = req->rq_err;
695 char *class = "Unknown";
697 VERBOSE("errcls %d code %d from command 0x%x\n",
698 errcls, error, SMB_CMD(req->rq_header));
700 if (errcls == ERRDOS) {
740 case ERROR_INVALID_PARAMETER:
742 case ERROR_DISK_FULL:
744 case ERROR_INVALID_NAME:
746 case ERROR_DIR_NOT_EMPTY:
748 case ERROR_NOT_LOCKED:
750 case ERROR_ALREADY_EXISTS:
756 } else if (errcls == ERRSRV) {
758 /* N.B. This is wrong ... EIO ? */
769 * This is a fatal error, as it means the "tree ID"
770 * for this connection is no longer valid. We map
771 * to a special error code and get a new connection.
779 } else if (errcls == ERRHRD) {
802 } else if (errcls == ERRCMD) {
804 } else if (errcls == SUCCESS) {
805 return 0; /* This is the only valid 0 return */
809 printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n",
810 class, error, SMB_CMD(req->rq_header));
814 /* smb_request_ok: We expect the server to be locked. Then we do the
815 request and check the answer completely. When smb_request_ok
816 returns 0, you can be quite sure that everything went well. When
817 the answer is <=0, the returned number is a valid unix errno. */
820 smb_request_ok(struct smb_request *req, int command, int wct, int bcc)
824 req->rq_resp_wct = wct;
825 req->rq_resp_bcc = bcc;
827 result = smb_add_request(req);
829 DEBUG1("smb_request failed\n");
833 if (smb_valid_packet(req->rq_header) != 0) {
834 PARANOIA("invalid packet!\n");
838 result = smb_verify(req->rq_header, command, wct, bcc);
845 * This implements the NEWCONN ioctl. It installs the server pid,
846 * sets server->state to CONN_VALID, and wakes up the waiting process.
849 smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
855 VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid);
857 smb_lock_server(server);
860 * Make sure we don't already have a valid connection ...
863 if (server->state == CONN_VALID)
867 if (current->uid != server->mnt->mounted_uid &&
868 !capable(CAP_SYS_ADMIN))
872 filp = fget(opt->fd);
875 if (!smb_valid_socket(filp->f_dentry->d_inode))
878 server->sock_file = filp;
879 server->conn_pid = current->pid;
881 server->generation += 1;
882 server->state = CONN_VALID;
885 if (server->conn_error) {
887 * conn_error is the returncode we originally decided to
888 * drop the old connection on. This message should be positive
889 * and not make people ask questions on why smbfs is printing
892 printk(KERN_INFO "SMB connection re-established (%d)\n",
894 server->conn_error = 0;
898 * Store the server in sock user_data (Only used by sunrpc)
900 sk = SOCKET_I(filp->f_dentry->d_inode)->sk;
901 sk->sk_user_data = server;
903 /* chain into the data_ready callback */
904 server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready);
906 /* check if we have an old smbmount that uses seconds for the
908 if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60)
909 server->opt.serverzone /= 60;
911 /* now that we have an established connection we can detect the server
912 type and enable bug workarounds */
913 if (server->opt.protocol < SMB_PROTOCOL_LANMAN2)
914 install_ops(server->ops, &smb_ops_core);
915 else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2)
916 install_ops(server->ops, &smb_ops_os2);
917 else if (server->opt.protocol == SMB_PROTOCOL_NT1 &&
918 (server->opt.max_xmit < 0x1000) &&
919 !(server->opt.capabilities & SMB_CAP_NT_SMBS)) {
920 /* FIXME: can we kill the WIN95 flag now? */
921 server->mnt->flags |= SMB_MOUNT_WIN95;
922 VERBOSE("detected WIN95 server\n");
923 install_ops(server->ops, &smb_ops_win95);
926 * Samba has max_xmit 65535
927 * NT4spX has max_xmit 4536 (or something like that)
930 VERBOSE("detected NT1 (Samba, NT4/5) server\n");
931 install_ops(server->ops, &smb_ops_winNT);
934 /* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */
935 if (server->mnt->flags & SMB_MOUNT_OLDATTR) {
936 server->ops->getattr = smb_proc_getattr_core;
937 } else if (server->mnt->flags & SMB_MOUNT_DIRATTR) {
938 server->ops->getattr = smb_proc_getattr_ff;
941 /* Decode server capabilities */
942 if (server->opt.capabilities & SMB_CAP_LARGE_FILES) {
943 /* Should be ok to set this now, as no one can access the
944 mount until the connection has been established. */
945 SB_of(server)->s_maxbytes = ~0ULL >> 1;
946 VERBOSE("LFS enabled\n");
948 if (server->opt.capabilities & SMB_CAP_UNICODE) {
949 server->mnt->flags |= SMB_MOUNT_UNICODE;
950 VERBOSE("Unicode enabled\n");
952 server->mnt->flags &= ~SMB_MOUNT_UNICODE;
955 /* flags we may test for other patches ... */
956 if (server->opt.capabilities & SMB_CAP_LARGE_READX) {
957 VERBOSE("Large reads enabled\n");
959 if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) {
960 VERBOSE("Large writes enabled\n");
963 if (server->opt.capabilities & SMB_CAP_UNIX) {
965 VERBOSE("Using UNIX CIFS extensions\n");
966 install_ops(server->ops, &smb_ops_unix);
967 inode = SB_of(server)->s_root->d_inode;
969 inode->i_op = &smb_dir_inode_operations_unix;
972 VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n",
973 server->opt.protocol, server->opt.max_xmit, server->conn_pid,
974 server->opt.capabilities);
976 /* FIXME: this really should be done by smbmount. */
977 if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) {
978 server->opt.max_xmit = SMB_MAX_PACKET_SIZE;
981 smb_unlock_server(server);
983 if (server->opt.capabilities & SMB_CAP_UNIX)
984 smb_proc_query_cifsunix(server);
986 server->conn_complete++;
987 wake_up_interruptible_all(&server->conn_wq);
991 smb_unlock_server(server);
1000 /* smb_setup_header: We completely set up the packet. You only have to
1001 insert the command-specific fields */
1004 smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc)
1006 __u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2;
1007 __u8 *p = req->rq_header;
1008 struct smb_sb_info *server = req->rq_server;
1010 p = smb_encode_smb_length(p, xmit_len - 4);
1018 memset(p, '\0', 19);
1022 if (server->opt.protocol > SMB_PROTOCOL_CORE) {
1023 int flags = SMB_FLAGS_CASELESS_PATHNAMES;
1024 int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS |
1025 SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */
1027 *(req->rq_header + smb_flg) = flags;
1028 if (server->mnt->flags & SMB_MOUNT_UNICODE)
1029 flags2 |= SMB_FLAGS2_UNICODE_STRINGS;
1030 WSET(req->rq_header, smb_flg2, flags2);
1032 *p++ = wct; /* wct */
1036 /* Include the header in the data to send */
1038 req->rq_iov[0].iov_base = req->rq_header;
1039 req->rq_iov[0].iov_len = xmit_len - bcc;
1041 return req->rq_buffer;
1045 smb_setup_bcc(struct smb_request *req, __u8 *p)
1047 u16 bcc = p - req->rq_buffer;
1048 u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header);
1052 smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN +
1053 2*SMB_WCT(req->rq_header) - 2 + bcc);
1055 /* Include the "bytes" in the data to send */
1057 req->rq_iov[1].iov_base = req->rq_buffer;
1058 req->rq_iov[1].iov_len = bcc;
1062 smb_proc_seek(struct smb_sb_info *server, __u16 fileid,
1063 __u16 mode, off_t offset)
1066 struct smb_request *req;
1069 if (! (req = smb_alloc_request(server, 0)))
1072 smb_setup_header(req, SMBlseek, 4, 0);
1073 WSET(req->rq_header, smb_vwv0, fileid);
1074 WSET(req->rq_header, smb_vwv1, mode);
1075 DSET(req->rq_header, smb_vwv2, offset);
1076 req->rq_flags |= SMB_REQ_NORETRY;
1078 result = smb_request_ok(req, SMBlseek, 2, 0);
1084 result = DVAL(req->rq_header, smb_vwv0);
1092 smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish)
1094 struct inode *ino = dentry->d_inode;
1095 struct smb_inode_info *ei = SMB_I(ino);
1096 int mode, read_write = 0x42, read_only = 0x40;
1099 struct smb_request *req;
1102 * Attempt to open r/w, unless there are no write privileges.
1105 if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
1108 /* FIXME: why is this code not in? below we fix it so that a caller
1109 wanting RO doesn't get RW. smb_revalidate_inode does some
1110 optimization based on access mode. tail -f needs it to be correct.
1112 We must open rw since we don't do the open if called a second time
1113 with different 'wish'. Is that not supported by smb servers? */
1114 if (!(wish & (O_WRONLY | O_RDWR)))
1119 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1123 p = smb_setup_header(req, SMBopen, 2, 0);
1124 WSET(req->rq_header, smb_vwv0, mode);
1125 WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR);
1126 res = smb_simple_encode_path(req, &p, dentry, NULL);
1129 smb_setup_bcc(req, p);
1131 res = smb_request_ok(req, SMBopen, 7, 0);
1133 if (mode == read_write &&
1134 (res == -EACCES || res == -ETXTBSY || res == -EROFS))
1136 VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n",
1137 DENTRY_PATH(dentry), res);
1144 /* We should now have data in vwv[0..6]. */
1146 ei->fileid = WVAL(req->rq_header, smb_vwv0);
1147 ei->attr = WVAL(req->rq_header, smb_vwv1);
1148 /* smb_vwv2 has mtime */
1149 /* smb_vwv4 has size */
1150 ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK);
1151 ei->open = server->generation;
1160 * Make sure the file is open, and check that the access
1161 * is compatible with the desired access.
1164 smb_open(struct dentry *dentry, int wish)
1166 struct inode *inode = dentry->d_inode;
1172 printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n",
1173 DENTRY_PATH(dentry));
1177 if (!smb_is_open(inode)) {
1178 struct smb_sb_info *server = server_from_inode(inode);
1180 if (!smb_is_open(inode))
1181 result = smb_proc_open(server, dentry, wish);
1185 * A successful open means the path is still valid ...
1187 smb_renew_times(dentry);
1191 * Check whether the access is compatible with the desired mode.
1194 access = SMB_I(inode)->access;
1195 if (access != wish && access != SMB_O_RDWR) {
1196 PARANOIA("%s/%s access denied, access=%x, wish=%x\n",
1197 DENTRY_PATH(dentry), access, wish);
1205 smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime)
1207 struct smb_request *req;
1208 int result = -ENOMEM;
1210 if (! (req = smb_alloc_request(server, 0)))
1213 smb_setup_header(req, SMBclose, 3, 0);
1214 WSET(req->rq_header, smb_vwv0, fileid);
1215 DSET(req->rq_header, smb_vwv1, utc2local(server, mtime));
1216 req->rq_flags |= SMB_REQ_NORETRY;
1217 result = smb_request_ok(req, SMBclose, 0, 0);
1225 * Win NT 4.0 has an apparent bug in that it fails to update the
1226 * modify time when writing to a file. As a workaround, we update
1227 * both modify and access time locally, and post the times to the
1228 * server when closing the file.
1231 smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino)
1233 struct smb_inode_info *ei = SMB_I(ino);
1235 if (smb_is_open(ino))
1238 * We clear the open flag in advance, in case another
1239 * process observes the value while we block below.
1244 * Kludge alert: SMB timestamps are accurate only to
1245 * two seconds ... round the times to avoid needless
1246 * cache invalidations!
1248 if (ino->i_mtime.tv_sec & 1) {
1249 ino->i_mtime.tv_sec--;
1250 ino->i_mtime.tv_nsec = 0;
1252 if (ino->i_atime.tv_sec & 1) {
1253 ino->i_atime.tv_sec--;
1254 ino->i_atime.tv_nsec = 0;
1257 * If the file is open with write permissions,
1258 * update the time stamps to sync mtime and atime.
1260 if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 &&
1261 (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) &&
1262 !(ei->access == SMB_O_RDONLY))
1264 struct smb_fattr fattr;
1265 smb_get_inode_attr(ino, &fattr);
1266 smb_proc_setattr_ext(server, ino, &fattr);
1269 result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec);
1271 * Force a revalidation after closing ... some servers
1272 * don't post the size until the file has been closed.
1274 if (server->opt.protocol < SMB_PROTOCOL_NT1)
1276 ei->closed = jiffies;
1282 smb_close(struct inode *ino)
1286 if (smb_is_open(ino)) {
1287 struct smb_sb_info *server = server_from_inode(ino);
1288 result = smb_proc_close_inode(server, ino);
1294 * This is used to close a file following a failed instantiate.
1295 * Since we don't have an inode, we can't use any of the above.
1298 smb_close_fileid(struct dentry *dentry, __u16 fileid)
1300 struct smb_sb_info *server = server_from_dentry(dentry);
1303 result = smb_proc_close(server, fileid, get_seconds());
1307 /* In smb_proc_read and smb_proc_write we do not retry, because the
1308 file-id would not be valid after a reconnection. */
1311 smb_proc_read_data(struct smb_request *req)
1313 req->rq_iov[0].iov_base = req->rq_buffer;
1314 req->rq_iov[0].iov_len = 3;
1316 req->rq_iov[1].iov_base = req->rq_page;
1317 req->rq_iov[1].iov_len = req->rq_rsize;
1320 req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
1324 smb_proc_read(struct inode *inode, loff_t offset, int count, char *data)
1326 struct smb_sb_info *server = server_from_inode(inode);
1327 __u16 returned_count, data_len;
1330 struct smb_request *req;
1334 if (! (req = smb_alloc_request(server, 0)))
1337 smb_setup_header(req, SMBread, 5, 0);
1338 buf = req->rq_header;
1339 WSET(buf, smb_vwv0, SMB_I(inode)->fileid);
1340 WSET(buf, smb_vwv1, count);
1341 DSET(buf, smb_vwv2, offset);
1342 WSET(buf, smb_vwv4, 0);
1344 req->rq_page = data;
1345 req->rq_rsize = count;
1346 req->rq_callback = smb_proc_read_data;
1347 req->rq_buffer = rbuf;
1348 req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC;
1350 result = smb_request_ok(req, SMBread, 5, -1);
1353 returned_count = WVAL(req->rq_header, smb_vwv0);
1355 data_len = WVAL(rbuf, 1);
1357 if (returned_count != data_len) {
1358 printk(KERN_NOTICE "smb_proc_read: returned != data_len\n");
1359 printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n",
1360 returned_count, data_len);
1367 VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
1368 inode->i_ino, SMB_I(inode)->fileid, count, result);
1373 smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data)
1375 struct smb_sb_info *server = server_from_inode(inode);
1377 u16 fileid = SMB_I(inode)->fileid;
1379 struct smb_request *req;
1382 if (! (req = smb_alloc_request(server, 0)))
1385 VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
1386 inode->i_ino, fileid, count, offset);
1388 smb_setup_header(req, SMBwrite, 5, count + 3);
1389 WSET(req->rq_header, smb_vwv0, fileid);
1390 WSET(req->rq_header, smb_vwv1, count);
1391 DSET(req->rq_header, smb_vwv2, offset);
1392 WSET(req->rq_header, smb_vwv4, 0);
1395 WSET(buf, 1, count); /* yes, again ... */
1396 req->rq_iov[1].iov_base = buf;
1397 req->rq_iov[1].iov_len = 3;
1398 req->rq_iov[2].iov_base = (char *) data;
1399 req->rq_iov[2].iov_len = count;
1401 req->rq_flags |= SMB_REQ_NORETRY;
1403 result = smb_request_ok(req, SMBwrite, 1, 0);
1405 result = WVAL(req->rq_header, smb_vwv0);
1413 * In smb_proc_readX and smb_proc_writeX we do not retry, because the
1414 * file-id would not be valid after a reconnection.
1417 #define SMB_READX_MAX_PAD 64
1419 smb_proc_readX_data(struct smb_request *req)
1421 /* header length, excluding the netbios length (-4) */
1422 int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2;
1423 int data_off = WVAL(req->rq_header, smb_vwv6);
1426 * Some genius made the padding to the data bytes arbitrary.
1427 * So we must first calculate the amount of padding used by the server.
1430 if (data_off > SMB_READX_MAX_PAD || data_off < 0) {
1431 PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n");
1432 PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off);
1433 req->rq_rlen = req->rq_bufsize + 1;
1436 req->rq_iov[0].iov_base = req->rq_buffer;
1437 req->rq_iov[0].iov_len = data_off;
1439 req->rq_iov[1].iov_base = req->rq_page;
1440 req->rq_iov[1].iov_len = req->rq_rsize;
1443 req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
1447 smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data)
1449 struct smb_sb_info *server = server_from_inode(inode);
1452 struct smb_request *req;
1453 static char pad[SMB_READX_MAX_PAD];
1456 if (! (req = smb_alloc_request(server, 0)))
1459 smb_setup_header(req, SMBreadX, 12, 0);
1460 buf = req->rq_header;
1461 WSET(buf, smb_vwv0, 0x00ff);
1462 WSET(buf, smb_vwv1, 0);
1463 WSET(buf, smb_vwv2, SMB_I(inode)->fileid);
1464 DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */
1465 WSET(buf, smb_vwv5, count);
1466 WSET(buf, smb_vwv6, 0);
1467 DSET(buf, smb_vwv7, 0);
1468 WSET(buf, smb_vwv9, 0);
1469 DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */
1470 WSET(buf, smb_vwv11, 0);
1472 req->rq_page = data;
1473 req->rq_rsize = count;
1474 req->rq_callback = smb_proc_readX_data;
1475 req->rq_buffer = pad;
1476 req->rq_bufsize = SMB_READX_MAX_PAD;
1477 req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY;
1479 result = smb_request_ok(req, SMBreadX, 12, -1);
1482 result = WVAL(req->rq_header, smb_vwv5);
1487 VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
1488 inode->i_ino, SMB_I(inode)->fileid, count, result);
1493 smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data)
1495 struct smb_sb_info *server = server_from_inode(inode);
1499 struct smb_request *req;
1502 if (! (req = smb_alloc_request(server, 0)))
1505 VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
1506 inode->i_ino, SMB_I(inode)->fileid, count, offset);
1508 p = smb_setup_header(req, SMBwriteX, 14, count + 1);
1509 WSET(req->rq_header, smb_vwv0, 0x00ff);
1510 WSET(req->rq_header, smb_vwv1, 0);
1511 WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid);
1512 DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */
1513 DSET(req->rq_header, smb_vwv5, 0);
1514 WSET(req->rq_header, smb_vwv7, 0); /* write mode */
1515 WSET(req->rq_header, smb_vwv8, 0);
1516 WSET(req->rq_header, smb_vwv9, 0);
1517 WSET(req->rq_header, smb_vwv10, count); /* data length */
1518 WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1);
1519 DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32));
1521 req->rq_iov[1].iov_base = pad;
1522 req->rq_iov[1].iov_len = 1;
1523 req->rq_iov[2].iov_base = (char *) data;
1524 req->rq_iov[2].iov_len = count;
1526 req->rq_flags |= SMB_REQ_NORETRY;
1528 result = smb_request_ok(req, SMBwriteX, 6, 0);
1530 result = WVAL(req->rq_header, smb_vwv2);
1538 smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid)
1540 struct smb_sb_info *server = server_from_dentry(dentry);
1543 struct smb_request *req;
1546 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1549 p = smb_setup_header(req, SMBcreate, 3, 0);
1550 WSET(req->rq_header, smb_vwv0, attr);
1551 DSET(req->rq_header, smb_vwv1, utc2local(server, ctime));
1552 result = smb_simple_encode_path(req, &p, dentry, NULL);
1555 smb_setup_bcc(req, p);
1557 result = smb_request_ok(req, SMBcreate, 1, 0);
1561 *fileid = WVAL(req->rq_header, smb_vwv0);
1571 smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry)
1573 struct smb_sb_info *server = server_from_dentry(old_dentry);
1576 struct smb_request *req;
1579 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1582 p = smb_setup_header(req, SMBmv, 1, 0);
1583 WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR);
1584 result = smb_simple_encode_path(req, &p, old_dentry, NULL);
1587 result = smb_simple_encode_path(req, &p, new_dentry, NULL);
1590 smb_setup_bcc(req, p);
1592 if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0)
1603 * Code common to mkdir and rmdir.
1606 smb_proc_generic_command(struct dentry *dentry, __u8 command)
1608 struct smb_sb_info *server = server_from_dentry(dentry);
1611 struct smb_request *req;
1614 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1617 p = smb_setup_header(req, command, 0, 0);
1618 result = smb_simple_encode_path(req, &p, dentry, NULL);
1621 smb_setup_bcc(req, p);
1623 result = smb_request_ok(req, command, 0, 0);
1635 smb_proc_mkdir(struct dentry *dentry)
1637 return smb_proc_generic_command(dentry, SMBmkdir);
1641 smb_proc_rmdir(struct dentry *dentry)
1643 return smb_proc_generic_command(dentry, SMBrmdir);
1646 #if SMBFS_POSIX_UNLINK
1648 * Removes readonly attribute from a file. Used by unlink to give posix
1652 smb_set_rw(struct dentry *dentry,struct smb_sb_info *server)
1655 struct smb_fattr fattr;
1657 /* FIXME: cifsUE should allow removing a readonly file. */
1659 /* first get current attribute */
1660 smb_init_dirent(server, &fattr);
1661 result = server->ops->getattr(server, dentry, &fattr);
1662 smb_finish_dirent(server, &fattr);
1666 /* if RONLY attribute is set, remove it */
1667 if (fattr.attr & aRONLY) { /* read only attribute is set */
1668 fattr.attr &= ~aRONLY;
1669 result = smb_proc_setattr_core(server, dentry, fattr.attr);
1676 smb_proc_unlink(struct dentry *dentry)
1678 struct smb_sb_info *server = server_from_dentry(dentry);
1682 struct smb_request *req;
1685 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1689 p = smb_setup_header(req, SMBunlink, 1, 0);
1690 WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN);
1691 result = smb_simple_encode_path(req, &p, dentry, NULL);
1694 smb_setup_bcc(req, p);
1696 if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) {
1697 #if SMBFS_POSIX_UNLINK
1698 if (result == -EACCES && !flag) {
1699 /* Posix semantics is for the read-only state
1700 of a file to be ignored in unlink(). In the
1701 SMB world a unlink() is refused on a
1702 read-only file. To make things easier for
1703 unix users we try to override the files
1704 permission if the unlink fails with the
1706 This introduces a race condition that could
1707 lead to a file being written by someone who
1708 shouldn't have access, but as far as I can
1709 tell that is unavoidable */
1711 /* remove RONLY attribute and try again */
1712 result = smb_set_rw(dentry,server);
1731 smb_proc_flush(struct smb_sb_info *server, __u16 fileid)
1734 struct smb_request *req;
1737 if (! (req = smb_alloc_request(server, 0)))
1740 smb_setup_header(req, SMBflush, 1, 0);
1741 WSET(req->rq_header, smb_vwv0, fileid);
1742 req->rq_flags |= SMB_REQ_NORETRY;
1743 result = smb_request_ok(req, SMBflush, 0, 0);
1751 smb_proc_trunc32(struct inode *inode, loff_t length)
1754 * Writing 0bytes is old-SMB magic for truncating files.
1755 * MAX_NON_LFS should prevent this from being called with a too
1758 return smb_proc_write(inode, length, 0, NULL);
1762 smb_proc_trunc64(struct inode *inode, loff_t length)
1764 struct smb_sb_info *server = server_from_inode(inode);
1768 struct smb_request *req;
1771 if (! (req = smb_alloc_request(server, 14)))
1774 param = req->rq_buffer;
1775 data = req->rq_buffer + 6;
1777 /* FIXME: must we also set allocation size? winNT seems to do that */
1778 WSET(param, 0, SMB_I(inode)->fileid);
1779 WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO);
1781 LSET(data, 0, length);
1783 req->rq_trans2_command = TRANSACT2_SETFILEINFO;
1785 req->rq_data = data;
1787 req->rq_parm = param;
1788 req->rq_flags |= SMB_REQ_NORETRY;
1789 result = smb_add_request(req);
1794 if (req->rq_rcls != 0)
1795 result = smb_errno(req);
1804 smb_proc_trunc95(struct inode *inode, loff_t length)
1806 struct smb_sb_info *server = server_from_inode(inode);
1807 int result = smb_proc_trunc32(inode, length);
1810 * win9x doesn't appear to update the size immediately.
1811 * It will return the old file size after the truncate,
1812 * confusing smbfs. So we force an update.
1814 * FIXME: is this still necessary?
1816 smb_proc_flush(server, SMB_I(inode)->fileid);
1821 smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
1823 memset(fattr, 0, sizeof(*fattr));
1826 fattr->f_uid = server->mnt->uid;
1827 fattr->f_gid = server->mnt->gid;
1828 fattr->f_blksize = SMB_ST_BLKSIZE;
1833 smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
1838 fattr->f_mode = server->mnt->file_mode;
1839 if (fattr->attr & aDIR) {
1840 fattr->f_mode = server->mnt->dir_mode;
1841 fattr->f_size = SMB_ST_BLKSIZE;
1843 /* Check the read-only flag */
1844 if (fattr->attr & aRONLY)
1845 fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
1847 /* How many 512 byte blocks do we need for this file? */
1848 fattr->f_blocks = 0;
1849 if (fattr->f_size != 0)
1850 fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9);
1855 smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr,
1856 struct super_block *sb)
1858 smb_init_dirent(server, fattr);
1860 fattr->f_ino = 2; /* traditional root inode number */
1861 fattr->f_mtime = current_fs_time(sb);
1862 smb_finish_dirent(server, fattr);
1866 * Decode a dirent for old protocols
1868 * qname is filled with the decoded, and possibly translated, name.
1869 * fattr receives decoded attributes
1872 * (1) Pathworks servers may pad the name with extra spaces.
1875 smb_decode_short_dirent(struct smb_sb_info *server, char *p,
1876 struct qstr *qname, struct smb_fattr *fattr,
1877 unsigned char *name_buf)
1882 * SMB doesn't have a concept of inode numbers ...
1884 smb_init_dirent(server, fattr);
1885 fattr->f_ino = 0; /* FIXME: do we need this? */
1887 p += SMB_STATUS_SIZE; /* reserved (search_status) */
1889 fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1));
1890 fattr->f_mtime.tv_nsec = 0;
1891 fattr->f_size = DVAL(p, 5);
1892 fattr->f_ctime = fattr->f_mtime;
1893 fattr->f_atime = fattr->f_mtime;
1894 qname->name = p + 9;
1895 len = strnlen(qname->name, 12);
1898 * Trim trailing blanks for Pathworks servers
1900 while (len > 2 && qname->name[len-1] == ' ')
1903 smb_finish_dirent(server, fattr);
1906 /* FIXME: These only work for ascii chars, and recent smbmount doesn't
1907 allow the flag to be set anyway. It kills const. Remove? */
1908 switch (server->opt.case_handling) {
1909 case SMB_CASE_UPPER:
1910 str_upper(entry->name, len);
1912 case SMB_CASE_LOWER:
1913 str_lower(entry->name, len);
1921 len = server->ops->convert(name_buf, SMB_MAXNAMELEN,
1923 server->remote_nls, server->local_nls);
1926 qname->name = name_buf;
1927 DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name);
1934 * This routine is used to read in directory entries from the network.
1935 * Note that it is for short directory name seeks, i.e.: protocol <
1936 * SMB_PROTOCOL_LANMAN2
1939 smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir,
1940 struct smb_cache_control *ctl)
1942 struct dentry *dir = filp->f_dentry;
1943 struct smb_sb_info *server = server_from_dentry(dir);
1945 struct smb_fattr fattr;
1948 int i, first, entries_seen, entries;
1949 int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE;
1952 char status[SMB_STATUS_SIZE];
1953 static struct qstr mask = {
1957 unsigned char *last_status;
1958 struct smb_request *req;
1959 unsigned char *name_buf;
1961 VERBOSE("%s/%s\n", DENTRY_PATH(dir));
1966 if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL)))
1971 entries_seen = 2; /* implicit . and .. */
1974 if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
1978 p = smb_setup_header(req, SMBsearch, 2, 0);
1979 WSET(req->rq_header, smb_vwv0, entries_asked);
1980 WSET(req->rq_header, smb_vwv1, aDIR);
1982 result = smb_simple_encode_path(req, &p, dir, &mask);
1985 if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) {
1986 result = -ENAMETOOLONG;
1994 if (p + 5 + SMB_STATUS_SIZE >
1995 (char *)req->rq_buffer + req->rq_bufsize) {
1996 result = -ENAMETOOLONG;
2003 WSET(p, 0, SMB_STATUS_SIZE);
2005 memcpy(p, status, SMB_STATUS_SIZE);
2006 p += SMB_STATUS_SIZE;
2009 smb_setup_bcc(req, p);
2011 result = smb_request_ok(req, SMBsearch, 1, -1);
2013 if ((req->rq_rcls == ERRDOS) &&
2014 (req->rq_err == ERRnofiles))
2018 count = WVAL(req->rq_header, smb_vwv0);
2023 bcc = smb_bcc(req->rq_header);
2024 if (bcc != count * SMB_DIRINFO_SIZE + 3)
2026 p = req->rq_buffer + 3;
2029 /* Make sure the response fits in the buffer. Fixed sized
2030 entries means we don't have to check in the decode loop. */
2032 last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE;
2034 if (last_status + SMB_DIRINFO_SIZE >=
2035 req->rq_buffer + req->rq_bufsize) {
2036 printk(KERN_ERR "smb_proc_readdir_short: "
2037 "last dir entry outside buffer! "
2038 "%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status,
2039 req->rq_bufsize, req->rq_buffer);
2043 /* Read the last entry into the status field. */
2044 memcpy(status, last_status, SMB_STATUS_SIZE);
2047 /* Now we are ready to parse smb directory entries. */
2049 for (i = 0; i < count; i++) {
2050 p = smb_decode_short_dirent(server, p,
2051 &qname, &fattr, name_buf);
2055 if (entries_seen == 2 && qname.name[0] == '.') {
2058 if (qname.name[1] == '.' && qname.len == 2)
2061 if (!smb_fill_cache(filp, dirent, filldir, ctl,
2063 ; /* stop reading? */
2078 static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p)
2080 u64 size, disk_bytes;
2082 /* FIXME: verify nls support. all is sent as utf8? */
2087 /* FIXME: use the uniqueID from the remote instead? */
2088 /* 0 L file size in bytes */
2089 /* 8 L file size on disk in bytes (block count) */
2092 /* 56 W file type */
2095 /* 76 L unique ID (inode) */
2096 /* 84 L permissions */
2097 /* 92 L link count */
2100 disk_bytes = LVAL(p, 8);
2103 * Some samba versions round up on-disk byte usage
2104 * to 1MB boundaries, making it useless. When seeing
2105 * that, use the size instead.
2107 if (!(disk_bytes & 0xfffff))
2108 disk_bytes = size+511;
2110 fattr->f_size = size;
2111 fattr->f_blocks = disk_bytes >> 9;
2112 fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16));
2113 fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24));
2114 fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32));
2116 if (server->mnt->flags & SMB_MOUNT_UID)
2117 fattr->f_uid = server->mnt->uid;
2119 fattr->f_uid = LVAL(p, 40);
2121 if (server->mnt->flags & SMB_MOUNT_GID)
2122 fattr->f_gid = server->mnt->gid;
2124 fattr->f_gid = LVAL(p, 48);
2126 fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56));
2128 if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) {
2129 __u64 major = LVAL(p, 60);
2130 __u64 minor = LVAL(p, 68);
2132 fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff);
2133 if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) ||
2134 MINOR(fattr->f_rdev) != (minor & 0xffffffff))
2138 fattr->f_mode |= LVAL(p, 84);
2140 if ( (server->mnt->flags & SMB_MOUNT_DMODE) &&
2141 (S_ISDIR(fattr->f_mode)) )
2142 fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR;
2143 else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
2144 !(S_ISDIR(fattr->f_mode)) )
2145 fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) |
2146 (fattr->f_mode & S_IFMT);
2151 * Interpret a long filename structure using the specified info level:
2152 * level 1 for anything below NT1 protocol
2153 * level 260 for NT1 protocol
2155 * qname is filled with the decoded, and possibly translated, name
2156 * fattr receives decoded attributes.
2159 * (1) Win NT 4.0 appends a null byte to names and counts it in the length!
2162 smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level,
2163 struct qstr *qname, struct smb_fattr *fattr,
2164 unsigned char *name_buf)
2167 unsigned int len = 0;
2170 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
2173 * SMB doesn't have a concept of inode numbers ...
2175 smb_init_dirent(server, fattr);
2176 fattr->f_ino = 0; /* FIXME: do we need this? */
2180 len = *((unsigned char *) p + 22);
2181 qname->name = p + 23;
2182 result = p + 24 + len;
2186 fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2187 fattr->f_ctime.tv_nsec = 0;
2191 fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
2192 fattr->f_atime.tv_nsec = 0;
2196 fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2197 fattr->f_mtime.tv_nsec = 0;
2198 fattr->f_size = DVAL(p, 12);
2199 /* ULONG allocation size */
2200 fattr->attr = WVAL(p, 20);
2202 VERBOSE("info 1 at %p, len=%d, name=%.*s\n",
2203 p, len, len, qname->name);
2206 result = p + WVAL(p, 0);
2208 if (len > 255) len = 255;
2209 /* NT4 null terminates, unless we are using unicode ... */
2210 qname->name = p + 94;
2211 if (!unicode && len && qname->name[len-1] == '\0')
2214 fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8));
2215 fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16));
2216 fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24));
2217 /* change time (32) */
2218 fattr->f_size = LVAL(p, 40);
2219 /* alloc size (48) */
2220 fattr->attr = DVAL(p, 56);
2222 VERBOSE("info 260 at %p, len=%d, name=%.*s\n",
2223 p, len, len, qname->name);
2225 case SMB_FIND_FILE_UNIX:
2226 result = p + WVAL(p, 0);
2227 qname->name = p + 108;
2229 len = strlen(qname->name);
2230 /* FIXME: should we check the length?? */
2233 smb_decode_unix_basic(fattr, server, p);
2234 VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n",
2235 p, len, len, qname->name);
2238 PARANOIA("Unknown info level %d\n", level);
2239 result = p + WVAL(p, 0);
2243 smb_finish_dirent(server, fattr);
2246 /* FIXME: These only work for ascii chars, and recent smbmount doesn't
2247 allow the flag to be set anyway. Remove? */
2248 switch (server->opt.case_handling) {
2249 case SMB_CASE_UPPER:
2250 str_upper(qname->name, len);
2252 case SMB_CASE_LOWER:
2253 str_lower(qname->name, len);
2261 n = server->ops->convert(name_buf, SMB_MAXNAMELEN,
2263 server->remote_nls, server->local_nls);
2266 qname->name = name_buf;
2273 /* findfirst/findnext flags */
2274 #define SMB_CLOSE_AFTER_FIRST (1<<0)
2275 #define SMB_CLOSE_IF_END (1<<1)
2276 #define SMB_REQUIRE_RESUME_KEY (1<<2)
2277 #define SMB_CONTINUE_BIT (1<<3)
2280 * Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in
2281 * source/libsmb/clilist.c. When looking for smb bugs in the readdir code,
2282 * go there for advise.
2285 * (1) When using Info Level 1 Win NT 4.0 truncates directory listings
2286 * for certain patterns of names and/or lengths. The breakage pattern
2287 * is completely reproducible and can be toggled by the creation of a
2288 * single file. (E.g. echo hi >foo breaks, rm -f foo works.)
2291 smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir,
2292 struct smb_cache_control *ctl)
2294 struct dentry *dir = filp->f_dentry;
2295 struct smb_sb_info *server = server_from_dentry(dir);
2297 struct smb_fattr fattr;
2299 unsigned char *p, *lastname;
2302 int first, entries_seen;
2304 /* Both NT and OS/2 accept info level 1 (but see note below). */
2305 int info_level = 260;
2306 const int max_matches = 512;
2308 unsigned int ff_searchcount = 0;
2309 unsigned int ff_eos = 0;
2310 unsigned int ff_lastname = 0;
2311 unsigned int ff_dir_handle = 0;
2312 unsigned int loop_count = 0;
2313 unsigned int mask_len, i;
2315 struct smb_request *req;
2316 unsigned char *name_buf;
2317 static struct qstr star = {
2325 * We always prefer unix style. Use info level 1 for older
2326 * servers that don't do 260.
2328 if (server->opt.capabilities & SMB_CAP_UNIX)
2329 info_level = SMB_FIND_FILE_UNIX;
2330 else if (server->opt.protocol < SMB_PROTOCOL_NT1)
2334 if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL)))
2336 if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
2338 param = req->rq_buffer;
2341 * Encode the initial path
2345 result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star);
2348 mask_len = result - 1; /* mask_len is strlen, not #bytes */
2351 VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask);
2356 while (ff_eos == 0) {
2358 if (loop_count > 10) {
2359 printk(KERN_WARNING "smb_proc_readdir_long: "
2360 "Looping in FIND_NEXT??\n");
2366 command = TRANSACT2_FINDFIRST;
2367 WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
2368 WSET(param, 2, max_matches); /* max count */
2369 WSET(param, 4, SMB_CLOSE_IF_END);
2370 WSET(param, 6, info_level);
2373 command = TRANSACT2_FINDNEXT;
2375 VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n",
2376 ff_dir_handle, ff_lastname, mask_len, mask);
2378 WSET(param, 0, ff_dir_handle); /* search handle */
2379 WSET(param, 2, max_matches); /* max count */
2380 WSET(param, 4, info_level);
2382 WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END);
2385 req->rq_trans2_command = command;
2387 req->rq_data = NULL;
2388 req->rq_lparm = 12 + mask_len + 1;
2389 req->rq_parm = param;
2391 result = smb_add_request(req);
2393 PARANOIA("error=%d, breaking\n", result);
2397 if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) {
2398 /* a damn Win95 bug - sometimes it clags if you
2400 current->state = TASK_INTERRUPTIBLE;
2401 schedule_timeout(HZ/5);
2405 if (req->rq_rcls != 0) {
2406 result = smb_errno(req);
2407 PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n",
2408 mask, result, req->rq_rcls, req->rq_err);
2412 /* parse out some important return info */
2414 ff_dir_handle = WVAL(req->rq_parm, 0);
2415 ff_searchcount = WVAL(req->rq_parm, 2);
2416 ff_eos = WVAL(req->rq_parm, 4);
2417 ff_lastname = WVAL(req->rq_parm, 8);
2419 ff_searchcount = WVAL(req->rq_parm, 0);
2420 ff_eos = WVAL(req->rq_parm, 2);
2421 ff_lastname = WVAL(req->rq_parm, 6);
2424 if (ff_searchcount == 0)
2427 /* Now we are ready to parse smb directory entries. */
2429 /* point to the data bytes */
2431 for (i = 0; i < ff_searchcount; i++) {
2432 /* make sure we stay within the buffer */
2433 if (p >= req->rq_data + req->rq_ldata) {
2434 printk(KERN_ERR "smb_proc_readdir_long: "
2435 "dirent pointer outside buffer! "
2437 p, req->rq_ldata, req->rq_data);
2438 result = -EIO; /* always a comm. error? */
2442 p = smb_decode_long_dirent(server, p, info_level,
2443 &qname, &fattr, name_buf);
2445 /* ignore . and .. from the server */
2446 if (entries_seen == 2 && qname.name[0] == '.') {
2449 if (qname.name[1] == '.' && qname.len == 2)
2453 if (!smb_fill_cache(filp, dirent, filldir, ctl,
2455 ; /* stop reading? */
2459 VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos);
2462 * We might need the lastname for continuations.
2464 * Note that some servers (win95?) point to the filename and
2465 * others (NT4, Samba using NT1) to the dir entry. We assume
2466 * here that those who do not point to a filename do not need
2467 * this info to continue the listing.
2469 * OS/2 needs this and talks infolevel 1.
2470 * NetApps want lastname with infolevel 260.
2471 * win2k want lastname with infolevel 260, and points to
2472 * the record not to the name.
2473 * Samba+CifsUnixExt doesn't need lastname.
2475 * Both are happy if we return the data they point to. So we do.
2476 * (FIXME: above is not true with win2k)
2479 if (info_level != SMB_FIND_FILE_UNIX &&
2480 ff_lastname > 0 && ff_lastname < req->rq_ldata) {
2481 lastname = req->rq_data + ff_lastname;
2483 switch (info_level) {
2485 mask_len = req->rq_ldata - ff_lastname;
2488 /* lastname points to a length byte */
2489 mask_len = *lastname++;
2490 if (ff_lastname + 1 + mask_len > req->rq_ldata)
2491 mask_len = req->rq_ldata - ff_lastname - 1;
2496 * Update the mask string for the next message.
2501 strncpy(mask, lastname, mask_len);
2503 mask_len = strnlen(mask, mask_len);
2504 VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n",
2505 mask_len, ff_lastname, req->rq_ldata, mask_len, mask);
2521 * This version uses the trans2 TRANSACT2_FINDFIRST message
2522 * to get the attribute data.
2527 smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
2528 struct smb_fattr *fattr)
2532 int mask_len, result;
2533 struct smb_request *req;
2536 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2538 param = req->rq_buffer;
2541 mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL);
2546 VERBOSE("name=%s, len=%d\n", mask, mask_len);
2547 WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
2548 WSET(param, 2, 1); /* max count */
2549 WSET(param, 4, 1); /* close after this call */
2550 WSET(param, 6, 1); /* info_level */
2553 req->rq_trans2_command = TRANSACT2_FINDFIRST;
2555 req->rq_data = NULL;
2556 req->rq_lparm = 12 + mask_len;
2557 req->rq_parm = param;
2559 result = smb_add_request(req);
2562 if (req->rq_rcls != 0) {
2563 result = smb_errno(req);
2564 #ifdef SMBFS_PARANOIA
2565 if (result != -ENOENT)
2566 PARANOIA("error for %s, rcls=%d, err=%d\n",
2567 mask, req->rq_rcls, req->rq_err);
2571 /* Make sure we got enough data ... */
2573 if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) {
2574 PARANOIA("bad result for %s, len=%d, count=%d\n",
2575 mask, req->rq_ldata, WVAL(req->rq_parm, 2));
2580 * Decode the response into the fattr ...
2582 date = WVAL(req->rq_data, 0);
2583 time = WVAL(req->rq_data, 2);
2584 fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2585 fattr->f_ctime.tv_nsec = 0;
2587 date = WVAL(req->rq_data, 4);
2588 time = WVAL(req->rq_data, 6);
2589 fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
2590 fattr->f_atime.tv_nsec = 0;
2592 date = WVAL(req->rq_data, 8);
2593 time = WVAL(req->rq_data, 10);
2594 fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2595 fattr->f_mtime.tv_nsec = 0;
2596 VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n",
2597 mask, date, time, fattr->f_mtime);
2598 fattr->f_size = DVAL(req->rq_data, 12);
2599 /* ULONG allocation size */
2600 fattr->attr = WVAL(req->rq_data, 20);
2610 smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
2611 struct smb_fattr *fattr)
2615 struct smb_request *req;
2618 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2621 p = smb_setup_header(req, SMBgetatr, 0, 0);
2622 result = smb_simple_encode_path(req, &p, dir, NULL);
2625 smb_setup_bcc(req, p);
2627 if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0)
2629 fattr->attr = WVAL(req->rq_header, smb_vwv0);
2630 fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1));
2631 fattr->f_mtime.tv_nsec = 0;
2632 fattr->f_size = DVAL(req->rq_header, smb_vwv3);
2633 fattr->f_ctime = fattr->f_mtime;
2634 fattr->f_atime = fattr->f_mtime;
2635 #ifdef SMBFS_DEBUG_TIMESTAMP
2636 printk("getattr_core: %s/%s, mtime=%ld\n",
2637 DENTRY_PATH(dir), fattr->f_mtime);
2649 * (1) Win 95 swaps the date and time fields in the standard info level.
2652 smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir,
2653 struct smb_request *req, int infolevel)
2658 param = req->rq_buffer;
2659 WSET(param, 0, infolevel);
2661 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
2664 p = param + 6 + result;
2666 req->rq_trans2_command = TRANSACT2_QPATHINFO;
2668 req->rq_data = NULL;
2669 req->rq_lparm = p - param;
2670 req->rq_parm = param;
2672 result = smb_add_request(req);
2675 if (req->rq_rcls != 0) {
2676 VERBOSE("for %s: result=%d, rcls=%d, err=%d\n",
2677 ¶m[6], result, req->rq_rcls, req->rq_err);
2678 result = smb_errno(req);
2682 if (req->rq_ldata < 22) {
2683 PARANOIA("not enough data for %s, len=%d\n",
2684 ¶m[6], req->rq_ldata);
2694 smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir,
2695 struct smb_fattr *attr)
2698 int off_date = 0, off_time = 2;
2700 struct smb_request *req;
2703 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2706 result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD);
2711 * Kludge alert: Win 95 swaps the date and time field,
2712 * contrary to the CIFS docs and Win NT practice.
2714 if (server->mnt->flags & SMB_MOUNT_WIN95) {
2718 date = WVAL(req->rq_data, off_date);
2719 time = WVAL(req->rq_data, off_time);
2720 attr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2721 attr->f_ctime.tv_nsec = 0;
2723 date = WVAL(req->rq_data, 4 + off_date);
2724 time = WVAL(req->rq_data, 4 + off_time);
2725 attr->f_atime.tv_sec = date_dos2unix(server, date, time);
2726 attr->f_atime.tv_nsec = 0;
2728 date = WVAL(req->rq_data, 8 + off_date);
2729 time = WVAL(req->rq_data, 8 + off_time);
2730 attr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2731 attr->f_mtime.tv_nsec = 0;
2732 #ifdef SMBFS_DEBUG_TIMESTAMP
2733 printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
2734 DENTRY_PATH(dir), date, time, attr->f_mtime);
2736 attr->f_size = DVAL(req->rq_data, 12);
2737 attr->attr = WVAL(req->rq_data, 20);
2746 smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir,
2747 struct smb_fattr *attr)
2749 struct smb_request *req;
2753 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2756 result = smb_proc_getattr_trans2(server, dir, req,
2757 SMB_QUERY_FILE_ALL_INFO);
2761 attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0));
2762 attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8));
2763 attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16));
2765 attr->attr = WVAL(req->rq_data, 32);
2767 /* allocated size (40) */
2768 attr->f_size = LVAL(req->rq_data, 48);
2777 smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir,
2778 struct smb_fattr *attr)
2780 struct smb_request *req;
2784 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2787 result = smb_proc_getattr_trans2(server, dir, req,
2788 SMB_QUERY_FILE_UNIX_BASIC);
2792 smb_decode_unix_basic(attr, server, req->rq_data);
2801 smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir,
2802 struct smb_fattr *attr)
2804 struct inode *inode = dir->d_inode;
2807 /* FIXME: why not use the "all" version? */
2808 result = smb_proc_getattr_trans2_std(server, dir, attr);
2813 * None of the getattr versions here can make win9x return the right
2814 * filesize if there are changes made to an open file.
2815 * A seek-to-end does return the right size, but we only need to do
2816 * that on files we have written.
2818 if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE &&
2821 __u16 fileid = SMB_I(inode)->fileid;
2822 attr->f_size = smb_proc_seek(server, fileid, 2, 0);
2830 smb_proc_ops_wait(struct smb_sb_info *server)
2834 result = wait_event_interruptible_timeout(server->conn_wq,
2835 server->conn_complete, 30*HZ);
2837 if (!result || signal_pending(current))
2844 smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir,
2845 struct smb_fattr *fattr)
2849 if (smb_proc_ops_wait(server) < 0)
2852 smb_init_dirent(server, fattr);
2853 result = server->ops->getattr(server, dir, fattr);
2854 smb_finish_dirent(server, fattr);
2860 smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir,
2861 struct smb_cache_control *ctl)
2863 struct smb_sb_info *server = server_from_dentry(filp->f_dentry);
2865 if (smb_proc_ops_wait(server) < 0)
2868 return server->ops->readdir(filp, dirent, filldir, ctl);
2872 smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr)
2874 struct smb_sb_info *server = server_from_dentry(dir);
2877 smb_init_dirent(server, fattr);
2878 result = server->ops->getattr(server, dir, fattr);
2879 smb_finish_dirent(server, fattr);
2886 * Because of bugs in the core protocol, we use this only to set
2887 * attributes. See smb_proc_settime() below for timestamp handling.
2890 * (1) If mtime is non-zero, both Win 3.1 and Win 95 fail
2891 * with an undocumented error (ERRDOS code 50). Setting
2892 * mtime to 0 allows the attributes to be set.
2893 * (2) The extra parameters following the name string aren't
2894 * in the CIFS docs, but seem to be necessary for operation.
2897 smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
2902 struct smb_request *req;
2905 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2908 p = smb_setup_header(req, SMBsetatr, 8, 0);
2909 WSET(req->rq_header, smb_vwv0, attr);
2910 DSET(req->rq_header, smb_vwv1, 0); /* mtime */
2911 WSET(req->rq_header, smb_vwv3, 0); /* reserved values */
2912 WSET(req->rq_header, smb_vwv4, 0);
2913 WSET(req->rq_header, smb_vwv5, 0);
2914 WSET(req->rq_header, smb_vwv6, 0);
2915 WSET(req->rq_header, smb_vwv7, 0);
2916 result = smb_simple_encode_path(req, &p, dentry, NULL);
2919 if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) {
2920 result = -ENAMETOOLONG;
2925 smb_setup_bcc(req, p);
2927 result = smb_request_ok(req, SMBsetatr, 0, 0);
2939 * Because of bugs in the trans2 setattr messages, we must set
2940 * attributes and timestamps separately. The core SMBsetatr
2941 * message seems to be the only reliable way to set attributes.
2944 smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr)
2946 struct smb_sb_info *server = server_from_dentry(dir);
2949 VERBOSE("setting %s/%s, open=%d\n",
2950 DENTRY_PATH(dir), smb_is_open(dir->d_inode));
2951 result = smb_proc_setattr_core(server, dir, fattr->attr);
2956 * Sets the timestamps for an file open with write permissions.
2959 smb_proc_setattr_ext(struct smb_sb_info *server,
2960 struct inode *inode, struct smb_fattr *fattr)
2964 struct smb_request *req;
2967 if (! (req = smb_alloc_request(server, 0)))
2970 smb_setup_header(req, SMBsetattrE, 7, 0);
2971 WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid);
2972 /* We don't change the creation time */
2973 WSET(req->rq_header, smb_vwv1, 0);
2974 WSET(req->rq_header, smb_vwv2, 0);
2975 date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
2976 WSET(req->rq_header, smb_vwv3, date);
2977 WSET(req->rq_header, smb_vwv4, time);
2978 date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
2979 WSET(req->rq_header, smb_vwv5, date);
2980 WSET(req->rq_header, smb_vwv6, time);
2981 #ifdef SMBFS_DEBUG_TIMESTAMP
2982 printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n",
2983 date, time, fattr->f_mtime);
2986 req->rq_flags |= SMB_REQ_NORETRY;
2987 result = smb_request_ok(req, SMBsetattrE, 0, 0);
2999 * (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't
3000 * set the file's attribute flags.
3003 smb_proc_setattr_trans2(struct smb_sb_info *server,
3004 struct dentry *dir, struct smb_fattr *fattr)
3010 struct smb_request *req;
3013 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3015 param = req->rq_buffer;
3017 WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
3019 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
3022 p = param + 6 + result;
3024 WSET(data, 0, 0); /* creation time */
3026 date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
3027 WSET(data, 4, date);
3028 WSET(data, 6, time);
3029 date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
3030 WSET(data, 8, date);
3031 WSET(data, 10, time);
3032 #ifdef SMBFS_DEBUG_TIMESTAMP
3033 printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
3034 DENTRY_PATH(dir), date, time, fattr->f_mtime);
3036 DSET(data, 12, 0); /* size */
3037 DSET(data, 16, 0); /* blksize */
3038 WSET(data, 20, 0); /* attr */
3039 DSET(data, 22, 0); /* ULONG EA size */
3041 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3043 req->rq_data = data;
3044 req->rq_lparm = p - param;
3045 req->rq_parm = param;
3047 result = smb_add_request(req);
3051 if (req->rq_rcls != 0)
3052 result = smb_errno(req);
3068 * ATTR_ATIME_SET 0x080
3069 * ATTR_MTIME_SET 0x100
3071 * ATTR_ATTR_FLAG 0x400
3073 * major/minor should only be set by mknod.
3076 smb_proc_setattr_unix(struct dentry *d, struct iattr *attr,
3077 unsigned int major, unsigned int minor)
3079 struct smb_sb_info *server = server_from_dentry(d);
3084 struct smb_request *req;
3087 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3089 param = req->rq_buffer;
3091 DEBUG1("valid flags = 0x%04x\n", attr->ia_valid);
3093 WSET(param, 0, SMB_SET_FILE_UNIX_BASIC);
3095 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
3098 p = param + 6 + result;
3100 /* 0 L file size in bytes */
3101 /* 8 L file size on disk in bytes (block count) */
3104 /* 56 W file type enum */
3107 /* 76 L unique ID (inode) */
3108 /* 84 L permissions */
3109 /* 92 L link count */
3110 LSET(data, 0, SMB_SIZE_NO_CHANGE);
3111 LSET(data, 8, SMB_SIZE_NO_CHANGE);
3112 LSET(data, 16, SMB_TIME_NO_CHANGE);
3113 LSET(data, 24, SMB_TIME_NO_CHANGE);
3114 LSET(data, 32, SMB_TIME_NO_CHANGE);
3115 LSET(data, 40, SMB_UID_NO_CHANGE);
3116 LSET(data, 48, SMB_GID_NO_CHANGE);
3117 LSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
3118 LSET(data, 60, major);
3119 LSET(data, 68, minor);
3121 LSET(data, 84, SMB_MODE_NO_CHANGE);
3124 if (attr->ia_valid & ATTR_SIZE) {
3125 LSET(data, 0, attr->ia_size);
3126 LSET(data, 8, 0); /* can't set anyway */
3130 * FIXME: check the conversion function it the correct one
3132 * we can't set ctime but we might as well pass this to the server
3133 * and let it ignore it.
3135 if (attr->ia_valid & ATTR_CTIME) {
3136 nttime = smb_unixutc2ntutc(attr->ia_ctime);
3137 LSET(data, 16, nttime);
3139 if (attr->ia_valid & ATTR_ATIME) {
3140 nttime = smb_unixutc2ntutc(attr->ia_atime);
3141 LSET(data, 24, nttime);
3143 if (attr->ia_valid & ATTR_MTIME) {
3144 nttime = smb_unixutc2ntutc(attr->ia_mtime);
3145 LSET(data, 32, nttime);
3148 if (attr->ia_valid & ATTR_UID) {
3149 LSET(data, 40, attr->ia_uid);
3151 if (attr->ia_valid & ATTR_GID) {
3152 LSET(data, 48, attr->ia_gid);
3155 if (attr->ia_valid & ATTR_MODE) {
3156 LSET(data, 84, attr->ia_mode);
3159 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3160 req->rq_ldata = 100;
3161 req->rq_data = data;
3162 req->rq_lparm = p - param;
3163 req->rq_parm = param;
3165 result = smb_add_request(req);
3175 * Set the modify and access timestamps for a file.
3177 * Incredibly enough, in all of SMB there is no message to allow
3178 * setting both attributes and timestamps at once.
3181 * (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message
3182 * with info level 1 (INFO_STANDARD).
3183 * (2) Win 95 seems not to support setting directory timestamps.
3184 * (3) Under the core protocol apparently the only way to set the
3185 * timestamp is to open and close the file.
3188 smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr)
3190 struct smb_sb_info *server = server_from_dentry(dentry);
3191 struct inode *inode = dentry->d_inode;
3194 VERBOSE("setting %s/%s, open=%d\n",
3195 DENTRY_PATH(dentry), smb_is_open(inode));
3197 /* setting the time on a Win95 server fails (tridge) */
3198 if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 &&
3199 !(server->mnt->flags & SMB_MOUNT_WIN95)) {
3200 if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY)
3201 result = smb_proc_setattr_ext(server, inode, fattr);
3203 result = smb_proc_setattr_trans2(server, dentry, fattr);
3206 * Fail silently on directories ... timestamp can't be set?
3209 if (S_ISREG(inode->i_mode)) {
3211 * Set the mtime by opening and closing the file.
3212 * Note that the file is opened read-only, but this
3213 * still allows us to set the date (tridge)
3216 if (!smb_is_open(inode))
3217 smb_proc_open(server, dentry, SMB_O_RDONLY);
3218 if (smb_is_open(inode)) {
3219 inode->i_mtime = fattr->f_mtime;
3220 result = smb_proc_close_inode(server, inode);
3229 smb_proc_dskattr(struct super_block *sb, struct kstatfs *attr)
3231 struct smb_sb_info *server = SMB_SB(sb);
3235 struct smb_request *req;
3238 if (! (req = smb_alloc_request(server, 0)))
3241 smb_setup_header(req, SMBdskattr, 0, 0);
3242 if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0)
3244 p = SMB_VWV(req->rq_header);
3245 unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT;
3246 attr->f_blocks = WVAL(p, 0) * unit;
3247 attr->f_bsize = SMB_ST_BLKSIZE;
3248 attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit;
3258 smb_proc_read_link(struct smb_sb_info *server, struct dentry *d,
3259 char *buffer, int len)
3263 struct smb_request *req;
3265 DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d));
3268 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3270 param = req->rq_buffer;
3272 WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK);
3274 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
3277 p = param + 6 + result;
3279 req->rq_trans2_command = TRANSACT2_QPATHINFO;
3281 req->rq_data = NULL;
3282 req->rq_lparm = p - param;
3283 req->rq_parm = param;
3285 result = smb_add_request(req);
3288 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3289 ¶m[6], result, req->rq_rcls, req->rq_err);
3291 /* copy data up to the \0 or buffer length */
3293 if (req->rq_ldata < len)
3294 result = req->rq_ldata;
3295 strncpy(buffer, req->rq_data, result);
3305 * Create a symlink object called dentry which points to oldpath.
3306 * Samba does not permit dangling links but returns a suitable error message.
3309 smb_proc_symlink(struct smb_sb_info *server, struct dentry *d,
3310 const char *oldpath)
3314 struct smb_request *req;
3317 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3319 param = req->rq_buffer;
3321 WSET(param, 0, SMB_SET_FILE_UNIX_LINK);
3323 result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL);
3326 p = param + 6 + result;
3328 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3329 req->rq_ldata = strlen(oldpath) + 1;
3330 req->rq_data = (char *) oldpath;
3331 req->rq_lparm = p - param;
3332 req->rq_parm = param;
3334 result = smb_add_request(req);
3338 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3339 ¶m[6], result, req->rq_rcls, req->rq_err);
3349 * Create a hard link object called new_dentry which points to dentry.
3352 smb_proc_link(struct smb_sb_info *server, struct dentry *dentry,
3353 struct dentry *new_dentry)
3357 struct smb_request *req;
3360 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3362 param = req->rq_buffer;
3364 WSET(param, 0, SMB_SET_FILE_UNIX_HLINK);
3366 result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1,
3370 p = param + 6 + result;
3372 /* Grr, pointless separation of parameters and data ... */
3374 req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1,
3377 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3378 req->rq_lparm = p - param;
3379 req->rq_parm = param;
3381 result = smb_add_request(req);
3385 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3386 ¶m[6], result, req->rq_rcls, req->rq_err);
3396 smb_proc_query_cifsunix(struct smb_sb_info *server)
3402 struct smb_request *req;
3405 if (! (req = smb_alloc_request(server, 100)))
3408 WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO);
3410 req->rq_trans2_command = TRANSACT2_QFSINFO;
3412 req->rq_data = NULL;
3414 req->rq_parm = param;
3416 result = smb_add_request(req);
3420 if (req->rq_ldata < 12) {
3421 PARANOIA("Not enough data\n");
3424 major = WVAL(req->rq_data, 0);
3425 minor = WVAL(req->rq_data, 2);
3427 DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n",
3429 /* FIXME: verify that we are ok with this major/minor? */
3431 caps = LVAL(req->rq_data, 4);
3432 DEBUG1("Server capabilities 0x%016llx\n", caps);
3442 install_ops(struct smb_ops *dst, struct smb_ops *src)
3444 memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC);
3448 static struct smb_ops smb_ops_core =
3450 .read = smb_proc_read,
3451 .write = smb_proc_write,
3452 .readdir = smb_proc_readdir_short,
3453 .getattr = smb_proc_getattr_core,
3454 .truncate = smb_proc_trunc32,
3457 /* LANMAN2, OS/2, others? */
3458 static struct smb_ops smb_ops_os2 =
3460 .read = smb_proc_read,
3461 .write = smb_proc_write,
3462 .readdir = smb_proc_readdir_long,
3463 .getattr = smb_proc_getattr_trans2_std,
3464 .truncate = smb_proc_trunc32,
3467 /* Win95, and possibly some NetApp versions too */
3468 static struct smb_ops smb_ops_win95 =
3470 .read = smb_proc_read, /* does not support 12word readX */
3471 .write = smb_proc_write,
3472 .readdir = smb_proc_readdir_long,
3473 .getattr = smb_proc_getattr_95,
3474 .truncate = smb_proc_trunc95,
3477 /* Samba, NT4 and NT5 */
3478 static struct smb_ops smb_ops_winNT =
3480 .read = smb_proc_readX,
3481 .write = smb_proc_writeX,
3482 .readdir = smb_proc_readdir_long,
3483 .getattr = smb_proc_getattr_trans2_all,
3484 .truncate = smb_proc_trunc64,
3487 /* Samba w/ unix extensions. Others? */
3488 static struct smb_ops smb_ops_unix =
3490 .read = smb_proc_readX,
3491 .write = smb_proc_writeX,
3492 .readdir = smb_proc_readdir_long,
3493 .getattr = smb_proc_getattr_unix,
3494 /* FIXME: core/ext/time setattr needs to be cleaned up! */
3495 /* .setattr = smb_proc_setattr_unix, */
3496 .truncate = smb_proc_trunc64,
3499 /* Place holder until real ops are in place */
3500 static struct smb_ops smb_ops_null =
3502 .readdir = smb_proc_readdir_null,
3503 .getattr = smb_proc_getattr_null,
3506 void smb_install_null_ops(struct smb_ops *ops)
3508 install_ops(ops, &smb_ops_null);