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/capability.h>
12 #include <linux/errno.h>
13 #include <linux/slab.h>
15 #include <linux/file.h>
16 #include <linux/stat.h>
17 #include <linux/fcntl.h>
18 #include <linux/dcache.h>
19 #include <linux/nls.h>
20 #include <linux/smp_lock.h>
21 #include <linux/net.h>
22 #include <linux/vfs.h>
25 #include <asm/string.h>
26 #include <asm/div64.h>
30 #include "smb_mount.h"
31 #include "smb_debug.h"
36 /* Features. Undefine if they cause problems, this should perhaps be a
38 #define SMBFS_POSIX_UNLINK 1
40 /* Allow smb_retry to be interrupted. */
41 #define SMB_RETRY_INTR
43 #define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)
44 #define SMB_CMD(packet) (*(packet+8))
45 #define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1))
47 #define SMB_DIRINFO_SIZE 43
48 #define SMB_STATUS_SIZE 21
50 #define SMB_ST_BLKSIZE (PAGE_SIZE)
51 #define SMB_ST_BLKSHIFT (PAGE_SHIFT)
53 static struct smb_ops smb_ops_core;
54 static struct smb_ops smb_ops_os2;
55 static struct smb_ops smb_ops_win95;
56 static struct smb_ops smb_ops_winNT;
57 static struct smb_ops smb_ops_unix;
58 static struct smb_ops smb_ops_null;
61 smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
63 smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
65 smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
66 struct smb_fattr *fattr);
68 smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
69 struct smb_fattr *fattr);
71 smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
74 smb_proc_setattr_ext(struct smb_sb_info *server,
75 struct inode *inode, struct smb_fattr *fattr);
77 smb_proc_query_cifsunix(struct smb_sb_info *server);
79 install_ops(struct smb_ops *dst, struct smb_ops *src);
83 str_upper(char *name, int len)
87 if (*name >= 'a' && *name <= 'z')
95 str_lower(char *name, int len)
99 if (*name >= 'A' && *name <= 'Z')
100 *name += ('a' - 'A');
106 /* reverse a string inline. This is used by the dircache walking routines */
107 static void reverse_string(char *buf, int len)
110 char *end = buf+len-1;
119 /* no conversion, just a wrapper for memcpy. */
120 static int convert_memcpy(unsigned char *output, int olen,
121 const unsigned char *input, int ilen,
122 struct nls_table *nls_from,
123 struct nls_table *nls_to)
126 return -ENAMETOOLONG;
127 memcpy(output, input, ilen);
131 static inline int write_char(unsigned char ch, char *output, int olen)
134 return -ENAMETOOLONG;
135 sprintf(output, ":x%02x", ch);
139 static inline int write_unichar(wchar_t ch, char *output, int olen)
142 return -ENAMETOOLONG;
143 sprintf(output, ":%04x", ch);
147 /* convert from one "codepage" to another (possibly being utf8). */
148 static int convert_cp(unsigned char *output, int olen,
149 const unsigned char *input, int ilen,
150 struct nls_table *nls_from,
151 struct nls_table *nls_to)
158 /* convert by changing to unicode and back to the new cp */
159 n = nls_from->char2uni(input, ilen, &ch);
162 n = write_char(*input++, output, olen);
174 n = nls_to->uni2char(ch, output, olen);
176 n = write_unichar(ch, output, olen);
189 /* ----------------------------------------------------------- */
194 * This encodes/decodes little endian unicode format
197 static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
206 static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
210 *uni = (rawstring[1] << 8) | rawstring[0];
214 static struct nls_table unicode_table = {
215 .charset = "unicode",
216 .uni2char = uni2char,
217 .char2uni = char2uni,
220 /* ----------------------------------------------------------- */
222 static int setcodepage(struct nls_table **p, char *name)
224 struct nls_table *nls;
226 if (!name || !*name) {
228 } else if ( (nls = load_nls(name)) == NULL) {
229 printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name);
233 /* if already set, unload the previous one. */
234 if (*p && *p != &unicode_table)
241 /* Handles all changes to codepage settings. */
242 int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp)
246 smb_lock_server(server);
248 /* Don't load any nls_* at all, if no remote is requested */
249 if (!*cp->remote_name)
253 n = setcodepage(&server->local_nls, cp->local_name);
258 if (!strcmp(cp->remote_name, "unicode")) {
259 server->remote_nls = &unicode_table;
261 n = setcodepage(&server->remote_nls, cp->remote_name);
263 setcodepage(&server->local_nls, NULL);
267 if (server->local_nls != NULL && server->remote_nls != NULL)
268 server->ops->convert = convert_cp;
270 server->ops->convert = convert_memcpy;
272 smb_unlock_server(server);
277 /*****************************************************************************/
279 /* Encoding/Decoding section */
281 /*****************************************************************************/
284 smb_encode_smb_length(__u8 * p, __u32 len)
288 *(p+2) = (len & 0xFF00) >> 8;
289 *(p+3) = (len & 0xFF);
298 * smb_build_path: build the path to entry and name storing it in buf.
299 * The path returned will have the trailing '\0'.
301 static int smb_build_path(struct smb_sb_info *server, unsigned char *buf,
303 struct dentry *entry, struct qstr *name)
305 unsigned char *path = buf;
307 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0;
309 if (maxlen < (2<<unicode))
310 return -ENAMETOOLONG;
312 if (maxlen > SMB_MAXPATHLEN + 1)
313 maxlen = SMB_MAXPATHLEN + 1;
316 goto test_name_and_out;
319 * If IS_ROOT, we have to do no walking at all.
321 if (IS_ROOT(entry) && !name) {
323 if (unicode) *path++ = '\0';
325 if (unicode) *path++ = '\0';
330 * Build the path string walking the tree backward from end to ROOT
331 * and store it in reversed order [see reverse_string()]
334 spin_lock(&entry->d_lock);
335 while (!IS_ROOT(entry)) {
336 struct dentry *parent;
338 if (maxlen < (3<<unicode)) {
339 spin_unlock(&entry->d_lock);
341 return -ENAMETOOLONG;
344 len = server->ops->convert(path, maxlen-2,
345 entry->d_name.name, entry->d_name.len,
346 server->local_nls, server->remote_nls);
348 spin_unlock(&entry->d_lock);
352 reverse_string(path, len);
355 /* Note: reverse order */
362 parent = entry->d_parent;
364 spin_unlock(&entry->d_lock);
367 spin_lock(&entry->d_lock);
369 spin_unlock(&entry->d_lock);
371 reverse_string(buf, path-buf);
373 /* maxlen has space for at least one char */
376 if (maxlen < (3<<unicode))
377 return -ENAMETOOLONG;
383 len = server->ops->convert(path, maxlen-2,
384 name->name, name->len,
385 server->local_nls, server->remote_nls);
391 /* maxlen has space for at least one char */
393 if (unicode) *path++ = '\0';
397 static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen,
398 struct dentry *dir, struct qstr *name)
402 result = smb_build_path(server, buf, maxlen, dir, name);
405 if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS)
406 str_upper(buf, result);
411 /* encode_path for non-trans2 request SMBs */
412 static int smb_simple_encode_path(struct smb_request *req, char **p,
413 struct dentry * entry, struct qstr * name)
415 struct smb_sb_info *server = req->rq_server;
418 int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s;
419 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
422 return -ENAMETOOLONG;
423 *s++ = 4; /* ASCII data format */
426 * SMB Unicode strings must be 16bit aligned relative the start of the
427 * packet. If they are not they must be padded with 0.
430 int align = s - (char *)req->rq_buffer;
437 res = smb_encode_path(server, s, maxlen-1, entry, name);
444 /* The following are taken directly from msdos-fs */
446 /* Linear day numbers of the respective 1sts in non-leap years. */
449 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
450 /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
454 utc2local(struct smb_sb_info *server, time_t time)
456 return time - server->opt.serverzone*60;
460 local2utc(struct smb_sb_info *server, time_t time)
462 return time + server->opt.serverzone*60;
465 /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
468 date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time)
473 /* first subtract and mask after that... Otherwise, if
474 date == 0, bad things happen */
475 month = ((date >> 5) - 1) & 15;
477 secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
478 ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
479 month < 2 ? 1 : 0) + 3653);
480 /* days since 1.1.70 plus 80's leap day */
481 return local2utc(server, secs);
485 /* Convert linear UNIX date to a MS-DOS time/date pair. */
488 date_unix2dos(struct smb_sb_info *server,
489 int unix_date, __u16 *date, __u16 *time)
491 int day, year, nl_day, month;
493 unix_date = utc2local(server, unix_date);
494 if (unix_date < 315532800)
495 unix_date = 315532800;
497 *time = (unix_date % 60) / 2 +
498 (((unix_date / 60) % 60) << 5) +
499 (((unix_date / 3600) % 24) << 11);
501 day = unix_date / 86400 - 3652;
503 if ((year + 3) / 4 + 365 * year > day)
505 day -= (year + 3) / 4 + 365 * year;
506 if (day == 59 && !(year & 3)) {
510 nl_day = (year & 3) || day <= 59 ? day : day - 1;
511 for (month = 1; month < 12; month++)
512 if (day_n[month] > nl_day)
515 *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9);
518 /* The following are taken from fs/ntfs/util.c */
520 #define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
523 * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
524 * into Unix UTC (based 1970-01-01, in seconds).
526 static struct timespec
527 smb_ntutc2unixutc(u64 ntutc)
530 /* FIXME: what about the timezone difference? */
531 /* Subtract the NTFS time offset, then convert to 1s intervals. */
532 u64 t = ntutc - NTFS_TIME_OFFSET;
533 ts.tv_nsec = do_div(t, 10000000) * 100;
538 /* Convert the Unix UTC into NT time */
540 smb_unixutc2ntutc(struct timespec ts)
542 /* Note: timezone conversion is probably wrong. */
543 /* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */
544 return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET;
547 #define MAX_FILE_MODE 6
548 static mode_t file_mode[] = {
549 S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK
552 static int smb_filetype_to_mode(u32 filetype)
554 if (filetype > MAX_FILE_MODE) {
555 PARANOIA("Filetype out of range: %d\n", filetype);
558 return file_mode[filetype];
561 static u32 smb_filetype_from_mode(int mode)
564 return UNIX_TYPE_FILE;
566 return UNIX_TYPE_DIR;
568 return UNIX_TYPE_SYMLINK;
570 return UNIX_TYPE_CHARDEV;
572 return UNIX_TYPE_BLKDEV;
574 return UNIX_TYPE_FIFO;
576 return UNIX_TYPE_SOCKET;
577 return UNIX_TYPE_UNKNOWN;
581 /*****************************************************************************/
583 /* Support section. */
585 /*****************************************************************************/
590 return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3);
594 smb_bcc(__u8 * packet)
596 int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16);
597 return WVAL(packet, pos);
600 /* smb_valid_packet: We check if packet fulfills the basic
601 requirements of a smb packet */
604 smb_valid_packet(__u8 * packet)
606 return (packet[4] == 0xff
610 && (smb_len(packet) + 4 == SMB_HEADER_LEN
611 + SMB_WCT(packet) * 2 + smb_bcc(packet)));
614 /* smb_verify: We check if we got the answer we expected, and if we
615 got enough data. If bcc == -1, we don't care. */
618 smb_verify(__u8 * packet, int command, int wct, int bcc)
620 if (SMB_CMD(packet) != command)
622 if (SMB_WCT(packet) < wct)
624 if (bcc != -1 && smb_bcc(packet) < bcc)
629 printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n",
630 command, SMB_CMD(packet));
633 printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n",
634 command, wct, SMB_WCT(packet));
637 printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n",
638 command, bcc, smb_bcc(packet));
644 * Returns the maximum read or write size for the "payload". Making all of the
645 * packet fit within the negotiated max_xmit size.
647 * N.B. Since this value is usually computed before locking the server,
648 * the server's packet size must never be decreased!
651 smb_get_xmitsize(struct smb_sb_info *server, int overhead)
653 return server->opt.max_xmit - overhead;
657 * Calculate the maximum read size
660 smb_get_rsize(struct smb_sb_info *server)
662 /* readX has 12 parameters, read has 5 */
663 int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2;
664 int size = smb_get_xmitsize(server, overhead);
666 VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
672 * Calculate the maximum write size
675 smb_get_wsize(struct smb_sb_info *server)
677 /* writeX has 14 parameters, write has 5 */
678 int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2;
679 int size = smb_get_xmitsize(server, overhead);
681 VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
687 * Convert SMB error codes to -E... errno values.
690 smb_errno(struct smb_request *req)
692 int errcls = req->rq_rcls;
693 int error = req->rq_err;
694 char *class = "Unknown";
696 VERBOSE("errcls %d code %d from command 0x%x\n",
697 errcls, error, SMB_CMD(req->rq_header));
699 if (errcls == ERRDOS) {
739 case ERROR_INVALID_PARAMETER:
741 case ERROR_DISK_FULL:
743 case ERROR_INVALID_NAME:
745 case ERROR_DIR_NOT_EMPTY:
747 case ERROR_NOT_LOCKED:
749 case ERROR_ALREADY_EXISTS:
755 } else if (errcls == ERRSRV) {
757 /* N.B. This is wrong ... EIO ? */
768 * This is a fatal error, as it means the "tree ID"
769 * for this connection is no longer valid. We map
770 * to a special error code and get a new connection.
778 } else if (errcls == ERRHRD) {
801 } else if (errcls == ERRCMD) {
803 } else if (errcls == SUCCESS) {
804 return 0; /* This is the only valid 0 return */
808 printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n",
809 class, error, SMB_CMD(req->rq_header));
813 /* smb_request_ok: We expect the server to be locked. Then we do the
814 request and check the answer completely. When smb_request_ok
815 returns 0, you can be quite sure that everything went well. When
816 the answer is <=0, the returned number is a valid unix errno. */
819 smb_request_ok(struct smb_request *req, int command, int wct, int bcc)
823 req->rq_resp_wct = wct;
824 req->rq_resp_bcc = bcc;
826 result = smb_add_request(req);
828 DEBUG1("smb_request failed\n");
832 if (smb_valid_packet(req->rq_header) != 0) {
833 PARANOIA("invalid packet!\n");
837 result = smb_verify(req->rq_header, command, wct, bcc);
844 * This implements the NEWCONN ioctl. It installs the server pid,
845 * sets server->state to CONN_VALID, and wakes up the waiting process.
848 smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
854 VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid);
856 smb_lock_server(server);
859 * Make sure we don't already have a valid connection ...
862 if (server->state == CONN_VALID)
866 if (current_uid() != server->mnt->mounted_uid &&
867 !capable(CAP_SYS_ADMIN))
871 filp = fget(opt->fd);
874 if (!smb_valid_socket(filp->f_path.dentry->d_inode))
877 server->sock_file = filp;
878 server->conn_pid = get_pid(task_pid(current));
880 server->generation += 1;
881 server->state = CONN_VALID;
884 if (server->conn_error) {
886 * conn_error is the returncode we originally decided to
887 * drop the old connection on. This message should be positive
888 * and not make people ask questions on why smbfs is printing
891 printk(KERN_INFO "SMB connection re-established (%d)\n",
893 server->conn_error = 0;
897 * Store the server in sock user_data (Only used by sunrpc)
899 sk = SOCKET_I(filp->f_path.dentry->d_inode)->sk;
900 sk->sk_user_data = server;
902 /* chain into the data_ready callback */
903 server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready);
905 /* check if we have an old smbmount that uses seconds for the
907 if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60)
908 server->opt.serverzone /= 60;
910 /* now that we have an established connection we can detect the server
911 type and enable bug workarounds */
912 if (server->opt.protocol < SMB_PROTOCOL_LANMAN2)
913 install_ops(server->ops, &smb_ops_core);
914 else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2)
915 install_ops(server->ops, &smb_ops_os2);
916 else if (server->opt.protocol == SMB_PROTOCOL_NT1 &&
917 (server->opt.max_xmit < 0x1000) &&
918 !(server->opt.capabilities & SMB_CAP_NT_SMBS)) {
919 /* FIXME: can we kill the WIN95 flag now? */
920 server->mnt->flags |= SMB_MOUNT_WIN95;
921 VERBOSE("detected WIN95 server\n");
922 install_ops(server->ops, &smb_ops_win95);
925 * Samba has max_xmit 65535
926 * NT4spX has max_xmit 4536 (or something like that)
929 VERBOSE("detected NT1 (Samba, NT4/5) server\n");
930 install_ops(server->ops, &smb_ops_winNT);
933 /* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */
934 if (server->mnt->flags & SMB_MOUNT_OLDATTR) {
935 server->ops->getattr = smb_proc_getattr_core;
936 } else if (server->mnt->flags & SMB_MOUNT_DIRATTR) {
937 server->ops->getattr = smb_proc_getattr_ff;
940 /* Decode server capabilities */
941 if (server->opt.capabilities & SMB_CAP_LARGE_FILES) {
942 /* Should be ok to set this now, as no one can access the
943 mount until the connection has been established. */
944 SB_of(server)->s_maxbytes = ~0ULL >> 1;
945 VERBOSE("LFS enabled\n");
947 if (server->opt.capabilities & SMB_CAP_UNICODE) {
948 server->mnt->flags |= SMB_MOUNT_UNICODE;
949 VERBOSE("Unicode enabled\n");
951 server->mnt->flags &= ~SMB_MOUNT_UNICODE;
954 /* flags we may test for other patches ... */
955 if (server->opt.capabilities & SMB_CAP_LARGE_READX) {
956 VERBOSE("Large reads enabled\n");
958 if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) {
959 VERBOSE("Large writes enabled\n");
962 if (server->opt.capabilities & SMB_CAP_UNIX) {
964 VERBOSE("Using UNIX CIFS extensions\n");
965 install_ops(server->ops, &smb_ops_unix);
966 inode = SB_of(server)->s_root->d_inode;
968 inode->i_op = &smb_dir_inode_operations_unix;
971 VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n",
972 server->opt.protocol, server->opt.max_xmit,
973 pid_nr(server->conn_pid), server->opt.capabilities);
975 /* FIXME: this really should be done by smbmount. */
976 if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) {
977 server->opt.max_xmit = SMB_MAX_PACKET_SIZE;
980 smb_unlock_server(server);
982 if (server->opt.capabilities & SMB_CAP_UNIX)
983 smb_proc_query_cifsunix(server);
985 server->conn_complete++;
986 wake_up_interruptible_all(&server->conn_wq);
990 smb_unlock_server(server);
999 /* smb_setup_header: We completely set up the packet. You only have to
1000 insert the command-specific fields */
1003 smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc)
1005 __u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2;
1006 __u8 *p = req->rq_header;
1007 struct smb_sb_info *server = req->rq_server;
1009 p = smb_encode_smb_length(p, xmit_len - 4);
1017 memset(p, '\0', 19);
1021 if (server->opt.protocol > SMB_PROTOCOL_CORE) {
1022 int flags = SMB_FLAGS_CASELESS_PATHNAMES;
1023 int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS |
1024 SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */
1026 *(req->rq_header + smb_flg) = flags;
1027 if (server->mnt->flags & SMB_MOUNT_UNICODE)
1028 flags2 |= SMB_FLAGS2_UNICODE_STRINGS;
1029 WSET(req->rq_header, smb_flg2, flags2);
1031 *p++ = wct; /* wct */
1035 /* Include the header in the data to send */
1037 req->rq_iov[0].iov_base = req->rq_header;
1038 req->rq_iov[0].iov_len = xmit_len - bcc;
1040 return req->rq_buffer;
1044 smb_setup_bcc(struct smb_request *req, __u8 *p)
1046 u16 bcc = p - req->rq_buffer;
1047 u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header);
1051 smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN +
1052 2*SMB_WCT(req->rq_header) - 2 + bcc);
1054 /* Include the "bytes" in the data to send */
1056 req->rq_iov[1].iov_base = req->rq_buffer;
1057 req->rq_iov[1].iov_len = bcc;
1061 smb_proc_seek(struct smb_sb_info *server, __u16 fileid,
1062 __u16 mode, off_t offset)
1065 struct smb_request *req;
1068 if (! (req = smb_alloc_request(server, 0)))
1071 smb_setup_header(req, SMBlseek, 4, 0);
1072 WSET(req->rq_header, smb_vwv0, fileid);
1073 WSET(req->rq_header, smb_vwv1, mode);
1074 DSET(req->rq_header, smb_vwv2, offset);
1075 req->rq_flags |= SMB_REQ_NORETRY;
1077 result = smb_request_ok(req, SMBlseek, 2, 0);
1083 result = DVAL(req->rq_header, smb_vwv0);
1091 smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish)
1093 struct inode *ino = dentry->d_inode;
1094 struct smb_inode_info *ei = SMB_I(ino);
1095 int mode, read_write = 0x42, read_only = 0x40;
1098 struct smb_request *req;
1101 * Attempt to open r/w, unless there are no write privileges.
1104 if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
1107 /* FIXME: why is this code not in? below we fix it so that a caller
1108 wanting RO doesn't get RW. smb_revalidate_inode does some
1109 optimization based on access mode. tail -f needs it to be correct.
1111 We must open rw since we don't do the open if called a second time
1112 with different 'wish'. Is that not supported by smb servers? */
1113 if (!(wish & (O_WRONLY | O_RDWR)))
1118 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1122 p = smb_setup_header(req, SMBopen, 2, 0);
1123 WSET(req->rq_header, smb_vwv0, mode);
1124 WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR);
1125 res = smb_simple_encode_path(req, &p, dentry, NULL);
1128 smb_setup_bcc(req, p);
1130 res = smb_request_ok(req, SMBopen, 7, 0);
1132 if (mode == read_write &&
1133 (res == -EACCES || res == -ETXTBSY || res == -EROFS))
1135 VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n",
1136 DENTRY_PATH(dentry), res);
1143 /* We should now have data in vwv[0..6]. */
1145 ei->fileid = WVAL(req->rq_header, smb_vwv0);
1146 ei->attr = WVAL(req->rq_header, smb_vwv1);
1147 /* smb_vwv2 has mtime */
1148 /* smb_vwv4 has size */
1149 ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK);
1150 ei->open = server->generation;
1159 * Make sure the file is open, and check that the access
1160 * is compatible with the desired access.
1163 smb_open(struct dentry *dentry, int wish)
1165 struct inode *inode = dentry->d_inode;
1171 printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n",
1172 DENTRY_PATH(dentry));
1176 if (!smb_is_open(inode)) {
1177 struct smb_sb_info *server = server_from_inode(inode);
1179 if (!smb_is_open(inode))
1180 result = smb_proc_open(server, dentry, wish);
1184 * A successful open means the path is still valid ...
1186 smb_renew_times(dentry);
1190 * Check whether the access is compatible with the desired mode.
1193 access = SMB_I(inode)->access;
1194 if (access != wish && access != SMB_O_RDWR) {
1195 PARANOIA("%s/%s access denied, access=%x, wish=%x\n",
1196 DENTRY_PATH(dentry), access, wish);
1204 smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime)
1206 struct smb_request *req;
1207 int result = -ENOMEM;
1209 if (! (req = smb_alloc_request(server, 0)))
1212 smb_setup_header(req, SMBclose, 3, 0);
1213 WSET(req->rq_header, smb_vwv0, fileid);
1214 DSET(req->rq_header, smb_vwv1, utc2local(server, mtime));
1215 req->rq_flags |= SMB_REQ_NORETRY;
1216 result = smb_request_ok(req, SMBclose, 0, 0);
1224 * Win NT 4.0 has an apparent bug in that it fails to update the
1225 * modify time when writing to a file. As a workaround, we update
1226 * both modify and access time locally, and post the times to the
1227 * server when closing the file.
1230 smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino)
1232 struct smb_inode_info *ei = SMB_I(ino);
1234 if (smb_is_open(ino))
1237 * We clear the open flag in advance, in case another
1238 * process observes the value while we block below.
1243 * Kludge alert: SMB timestamps are accurate only to
1244 * two seconds ... round the times to avoid needless
1245 * cache invalidations!
1247 if (ino->i_mtime.tv_sec & 1) {
1248 ino->i_mtime.tv_sec--;
1249 ino->i_mtime.tv_nsec = 0;
1251 if (ino->i_atime.tv_sec & 1) {
1252 ino->i_atime.tv_sec--;
1253 ino->i_atime.tv_nsec = 0;
1256 * If the file is open with write permissions,
1257 * update the time stamps to sync mtime and atime.
1259 if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 &&
1260 (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) &&
1261 !(ei->access == SMB_O_RDONLY))
1263 struct smb_fattr fattr;
1264 smb_get_inode_attr(ino, &fattr);
1265 smb_proc_setattr_ext(server, ino, &fattr);
1268 result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec);
1270 * Force a revalidation after closing ... some servers
1271 * don't post the size until the file has been closed.
1273 if (server->opt.protocol < SMB_PROTOCOL_NT1)
1275 ei->closed = jiffies;
1281 smb_close(struct inode *ino)
1285 if (smb_is_open(ino)) {
1286 struct smb_sb_info *server = server_from_inode(ino);
1287 result = smb_proc_close_inode(server, ino);
1293 * This is used to close a file following a failed instantiate.
1294 * Since we don't have an inode, we can't use any of the above.
1297 smb_close_fileid(struct dentry *dentry, __u16 fileid)
1299 struct smb_sb_info *server = server_from_dentry(dentry);
1302 result = smb_proc_close(server, fileid, get_seconds());
1306 /* In smb_proc_read and smb_proc_write we do not retry, because the
1307 file-id would not be valid after a reconnection. */
1310 smb_proc_read_data(struct smb_request *req)
1312 req->rq_iov[0].iov_base = req->rq_buffer;
1313 req->rq_iov[0].iov_len = 3;
1315 req->rq_iov[1].iov_base = req->rq_page;
1316 req->rq_iov[1].iov_len = req->rq_rsize;
1319 req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
1323 smb_proc_read(struct inode *inode, loff_t offset, int count, char *data)
1325 struct smb_sb_info *server = server_from_inode(inode);
1326 __u16 returned_count, data_len;
1329 struct smb_request *req;
1333 if (! (req = smb_alloc_request(server, 0)))
1336 smb_setup_header(req, SMBread, 5, 0);
1337 buf = req->rq_header;
1338 WSET(buf, smb_vwv0, SMB_I(inode)->fileid);
1339 WSET(buf, smb_vwv1, count);
1340 DSET(buf, smb_vwv2, offset);
1341 WSET(buf, smb_vwv4, 0);
1343 req->rq_page = data;
1344 req->rq_rsize = count;
1345 req->rq_callback = smb_proc_read_data;
1346 req->rq_buffer = rbuf;
1347 req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC;
1349 result = smb_request_ok(req, SMBread, 5, -1);
1352 returned_count = WVAL(req->rq_header, smb_vwv0);
1354 data_len = WVAL(rbuf, 1);
1356 if (returned_count != data_len) {
1357 printk(KERN_NOTICE "smb_proc_read: returned != data_len\n");
1358 printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n",
1359 returned_count, data_len);
1366 VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
1367 inode->i_ino, SMB_I(inode)->fileid, count, result);
1372 smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data)
1374 struct smb_sb_info *server = server_from_inode(inode);
1376 u16 fileid = SMB_I(inode)->fileid;
1378 struct smb_request *req;
1381 if (! (req = smb_alloc_request(server, 0)))
1384 VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
1385 inode->i_ino, fileid, count, offset);
1387 smb_setup_header(req, SMBwrite, 5, count + 3);
1388 WSET(req->rq_header, smb_vwv0, fileid);
1389 WSET(req->rq_header, smb_vwv1, count);
1390 DSET(req->rq_header, smb_vwv2, offset);
1391 WSET(req->rq_header, smb_vwv4, 0);
1394 WSET(buf, 1, count); /* yes, again ... */
1395 req->rq_iov[1].iov_base = buf;
1396 req->rq_iov[1].iov_len = 3;
1397 req->rq_iov[2].iov_base = (char *) data;
1398 req->rq_iov[2].iov_len = count;
1400 req->rq_flags |= SMB_REQ_NORETRY;
1402 result = smb_request_ok(req, SMBwrite, 1, 0);
1404 result = WVAL(req->rq_header, smb_vwv0);
1412 * In smb_proc_readX and smb_proc_writeX we do not retry, because the
1413 * file-id would not be valid after a reconnection.
1416 #define SMB_READX_MAX_PAD 64
1418 smb_proc_readX_data(struct smb_request *req)
1420 /* header length, excluding the netbios length (-4) */
1421 int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2;
1422 int data_off = WVAL(req->rq_header, smb_vwv6);
1425 * Some genius made the padding to the data bytes arbitrary.
1426 * So we must first calculate the amount of padding used by the server.
1429 if (data_off > SMB_READX_MAX_PAD || data_off < 0) {
1430 PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n");
1431 PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off);
1432 req->rq_rlen = req->rq_bufsize + 1;
1435 req->rq_iov[0].iov_base = req->rq_buffer;
1436 req->rq_iov[0].iov_len = data_off;
1438 req->rq_iov[1].iov_base = req->rq_page;
1439 req->rq_iov[1].iov_len = req->rq_rsize;
1442 req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
1446 smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data)
1448 struct smb_sb_info *server = server_from_inode(inode);
1451 struct smb_request *req;
1452 static char pad[SMB_READX_MAX_PAD];
1455 if (! (req = smb_alloc_request(server, 0)))
1458 smb_setup_header(req, SMBreadX, 12, 0);
1459 buf = req->rq_header;
1460 WSET(buf, smb_vwv0, 0x00ff);
1461 WSET(buf, smb_vwv1, 0);
1462 WSET(buf, smb_vwv2, SMB_I(inode)->fileid);
1463 DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */
1464 WSET(buf, smb_vwv5, count);
1465 WSET(buf, smb_vwv6, 0);
1466 DSET(buf, smb_vwv7, 0);
1467 WSET(buf, smb_vwv9, 0);
1468 DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */
1469 WSET(buf, smb_vwv11, 0);
1471 req->rq_page = data;
1472 req->rq_rsize = count;
1473 req->rq_callback = smb_proc_readX_data;
1474 req->rq_buffer = pad;
1475 req->rq_bufsize = SMB_READX_MAX_PAD;
1476 req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY;
1478 result = smb_request_ok(req, SMBreadX, 12, -1);
1481 result = WVAL(req->rq_header, smb_vwv5);
1486 VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
1487 inode->i_ino, SMB_I(inode)->fileid, count, result);
1492 smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data)
1494 struct smb_sb_info *server = server_from_inode(inode);
1498 struct smb_request *req;
1501 if (! (req = smb_alloc_request(server, 0)))
1504 VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
1505 inode->i_ino, SMB_I(inode)->fileid, count, offset);
1507 p = smb_setup_header(req, SMBwriteX, 14, count + 1);
1508 WSET(req->rq_header, smb_vwv0, 0x00ff);
1509 WSET(req->rq_header, smb_vwv1, 0);
1510 WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid);
1511 DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */
1512 DSET(req->rq_header, smb_vwv5, 0);
1513 WSET(req->rq_header, smb_vwv7, 0); /* write mode */
1514 WSET(req->rq_header, smb_vwv8, 0);
1515 WSET(req->rq_header, smb_vwv9, 0);
1516 WSET(req->rq_header, smb_vwv10, count); /* data length */
1517 WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1);
1518 DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32));
1520 req->rq_iov[1].iov_base = pad;
1521 req->rq_iov[1].iov_len = 1;
1522 req->rq_iov[2].iov_base = (char *) data;
1523 req->rq_iov[2].iov_len = count;
1525 req->rq_flags |= SMB_REQ_NORETRY;
1527 result = smb_request_ok(req, SMBwriteX, 6, 0);
1529 result = WVAL(req->rq_header, smb_vwv2);
1537 smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid)
1539 struct smb_sb_info *server = server_from_dentry(dentry);
1542 struct smb_request *req;
1545 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1548 p = smb_setup_header(req, SMBcreate, 3, 0);
1549 WSET(req->rq_header, smb_vwv0, attr);
1550 DSET(req->rq_header, smb_vwv1, utc2local(server, ctime));
1551 result = smb_simple_encode_path(req, &p, dentry, NULL);
1554 smb_setup_bcc(req, p);
1556 result = smb_request_ok(req, SMBcreate, 1, 0);
1560 *fileid = WVAL(req->rq_header, smb_vwv0);
1570 smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry)
1572 struct smb_sb_info *server = server_from_dentry(old_dentry);
1575 struct smb_request *req;
1578 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1581 p = smb_setup_header(req, SMBmv, 1, 0);
1582 WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR);
1583 result = smb_simple_encode_path(req, &p, old_dentry, NULL);
1586 result = smb_simple_encode_path(req, &p, new_dentry, NULL);
1589 smb_setup_bcc(req, p);
1591 if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0)
1602 * Code common to mkdir and rmdir.
1605 smb_proc_generic_command(struct dentry *dentry, __u8 command)
1607 struct smb_sb_info *server = server_from_dentry(dentry);
1610 struct smb_request *req;
1613 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1616 p = smb_setup_header(req, command, 0, 0);
1617 result = smb_simple_encode_path(req, &p, dentry, NULL);
1620 smb_setup_bcc(req, p);
1622 result = smb_request_ok(req, command, 0, 0);
1634 smb_proc_mkdir(struct dentry *dentry)
1636 return smb_proc_generic_command(dentry, SMBmkdir);
1640 smb_proc_rmdir(struct dentry *dentry)
1642 return smb_proc_generic_command(dentry, SMBrmdir);
1645 #if SMBFS_POSIX_UNLINK
1647 * Removes readonly attribute from a file. Used by unlink to give posix
1651 smb_set_rw(struct dentry *dentry,struct smb_sb_info *server)
1654 struct smb_fattr fattr;
1656 /* FIXME: cifsUE should allow removing a readonly file. */
1658 /* first get current attribute */
1659 smb_init_dirent(server, &fattr);
1660 result = server->ops->getattr(server, dentry, &fattr);
1661 smb_finish_dirent(server, &fattr);
1665 /* if RONLY attribute is set, remove it */
1666 if (fattr.attr & aRONLY) { /* read only attribute is set */
1667 fattr.attr &= ~aRONLY;
1668 result = smb_proc_setattr_core(server, dentry, fattr.attr);
1675 smb_proc_unlink(struct dentry *dentry)
1677 struct smb_sb_info *server = server_from_dentry(dentry);
1681 struct smb_request *req;
1684 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
1688 p = smb_setup_header(req, SMBunlink, 1, 0);
1689 WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN);
1690 result = smb_simple_encode_path(req, &p, dentry, NULL);
1693 smb_setup_bcc(req, p);
1695 if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) {
1696 #if SMBFS_POSIX_UNLINK
1697 if (result == -EACCES && !flag) {
1698 /* Posix semantics is for the read-only state
1699 of a file to be ignored in unlink(). In the
1700 SMB world a unlink() is refused on a
1701 read-only file. To make things easier for
1702 unix users we try to override the files
1703 permission if the unlink fails with the
1705 This introduces a race condition that could
1706 lead to a file being written by someone who
1707 shouldn't have access, but as far as I can
1708 tell that is unavoidable */
1710 /* remove RONLY attribute and try again */
1711 result = smb_set_rw(dentry,server);
1730 smb_proc_flush(struct smb_sb_info *server, __u16 fileid)
1733 struct smb_request *req;
1736 if (! (req = smb_alloc_request(server, 0)))
1739 smb_setup_header(req, SMBflush, 1, 0);
1740 WSET(req->rq_header, smb_vwv0, fileid);
1741 req->rq_flags |= SMB_REQ_NORETRY;
1742 result = smb_request_ok(req, SMBflush, 0, 0);
1750 smb_proc_trunc32(struct inode *inode, loff_t length)
1753 * Writing 0bytes is old-SMB magic for truncating files.
1754 * MAX_NON_LFS should prevent this from being called with a too
1757 return smb_proc_write(inode, length, 0, NULL);
1761 smb_proc_trunc64(struct inode *inode, loff_t length)
1763 struct smb_sb_info *server = server_from_inode(inode);
1767 struct smb_request *req;
1770 if (! (req = smb_alloc_request(server, 14)))
1773 param = req->rq_buffer;
1774 data = req->rq_buffer + 6;
1776 /* FIXME: must we also set allocation size? winNT seems to do that */
1777 WSET(param, 0, SMB_I(inode)->fileid);
1778 WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO);
1780 LSET(data, 0, length);
1782 req->rq_trans2_command = TRANSACT2_SETFILEINFO;
1784 req->rq_data = data;
1786 req->rq_parm = param;
1787 req->rq_flags |= SMB_REQ_NORETRY;
1788 result = smb_add_request(req);
1793 if (req->rq_rcls != 0)
1794 result = smb_errno(req);
1803 smb_proc_trunc95(struct inode *inode, loff_t length)
1805 struct smb_sb_info *server = server_from_inode(inode);
1806 int result = smb_proc_trunc32(inode, length);
1809 * win9x doesn't appear to update the size immediately.
1810 * It will return the old file size after the truncate,
1811 * confusing smbfs. So we force an update.
1813 * FIXME: is this still necessary?
1815 smb_proc_flush(server, SMB_I(inode)->fileid);
1820 smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
1822 memset(fattr, 0, sizeof(*fattr));
1825 fattr->f_uid = server->mnt->uid;
1826 fattr->f_gid = server->mnt->gid;
1831 smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
1836 fattr->f_mode = server->mnt->file_mode;
1837 if (fattr->attr & aDIR) {
1838 fattr->f_mode = server->mnt->dir_mode;
1839 fattr->f_size = SMB_ST_BLKSIZE;
1841 /* Check the read-only flag */
1842 if (fattr->attr & aRONLY)
1843 fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
1845 /* How many 512 byte blocks do we need for this file? */
1846 fattr->f_blocks = 0;
1847 if (fattr->f_size != 0)
1848 fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9);
1853 smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr,
1854 struct super_block *sb)
1856 smb_init_dirent(server, fattr);
1858 fattr->f_ino = 2; /* traditional root inode number */
1859 fattr->f_mtime = current_fs_time(sb);
1860 smb_finish_dirent(server, fattr);
1864 * Decode a dirent for old protocols
1866 * qname is filled with the decoded, and possibly translated, name.
1867 * fattr receives decoded attributes
1870 * (1) Pathworks servers may pad the name with extra spaces.
1873 smb_decode_short_dirent(struct smb_sb_info *server, char *p,
1874 struct qstr *qname, struct smb_fattr *fattr,
1875 unsigned char *name_buf)
1880 * SMB doesn't have a concept of inode numbers ...
1882 smb_init_dirent(server, fattr);
1883 fattr->f_ino = 0; /* FIXME: do we need this? */
1885 p += SMB_STATUS_SIZE; /* reserved (search_status) */
1887 fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1));
1888 fattr->f_mtime.tv_nsec = 0;
1889 fattr->f_size = DVAL(p, 5);
1890 fattr->f_ctime = fattr->f_mtime;
1891 fattr->f_atime = fattr->f_mtime;
1892 qname->name = p + 9;
1893 len = strnlen(qname->name, 12);
1896 * Trim trailing blanks for Pathworks servers
1898 while (len > 2 && qname->name[len-1] == ' ')
1901 smb_finish_dirent(server, fattr);
1904 /* FIXME: These only work for ascii chars, and recent smbmount doesn't
1905 allow the flag to be set anyway. It kills const. Remove? */
1906 switch (server->opt.case_handling) {
1907 case SMB_CASE_UPPER:
1908 str_upper(entry->name, len);
1910 case SMB_CASE_LOWER:
1911 str_lower(entry->name, len);
1919 len = server->ops->convert(name_buf, SMB_MAXNAMELEN,
1921 server->remote_nls, server->local_nls);
1924 qname->name = name_buf;
1925 DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name);
1932 * This routine is used to read in directory entries from the network.
1933 * Note that it is for short directory name seeks, i.e.: protocol <
1934 * SMB_PROTOCOL_LANMAN2
1937 smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir,
1938 struct smb_cache_control *ctl)
1940 struct dentry *dir = filp->f_path.dentry;
1941 struct smb_sb_info *server = server_from_dentry(dir);
1943 struct smb_fattr fattr;
1946 int i, first, entries_seen, entries;
1947 int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE;
1950 char status[SMB_STATUS_SIZE];
1951 static struct qstr mask = {
1955 unsigned char *last_status;
1956 struct smb_request *req;
1957 unsigned char *name_buf;
1959 VERBOSE("%s/%s\n", DENTRY_PATH(dir));
1964 if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL)))
1969 entries_seen = 2; /* implicit . and .. */
1972 if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
1976 p = smb_setup_header(req, SMBsearch, 2, 0);
1977 WSET(req->rq_header, smb_vwv0, entries_asked);
1978 WSET(req->rq_header, smb_vwv1, aDIR);
1980 result = smb_simple_encode_path(req, &p, dir, &mask);
1983 if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) {
1984 result = -ENAMETOOLONG;
1992 if (p + 5 + SMB_STATUS_SIZE >
1993 (char *)req->rq_buffer + req->rq_bufsize) {
1994 result = -ENAMETOOLONG;
2001 WSET(p, 0, SMB_STATUS_SIZE);
2003 memcpy(p, status, SMB_STATUS_SIZE);
2004 p += SMB_STATUS_SIZE;
2007 smb_setup_bcc(req, p);
2009 result = smb_request_ok(req, SMBsearch, 1, -1);
2011 if ((req->rq_rcls == ERRDOS) &&
2012 (req->rq_err == ERRnofiles))
2016 count = WVAL(req->rq_header, smb_vwv0);
2021 bcc = smb_bcc(req->rq_header);
2022 if (bcc != count * SMB_DIRINFO_SIZE + 3)
2024 p = req->rq_buffer + 3;
2027 /* Make sure the response fits in the buffer. Fixed sized
2028 entries means we don't have to check in the decode loop. */
2030 last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE;
2032 if (last_status + SMB_DIRINFO_SIZE >=
2033 req->rq_buffer + req->rq_bufsize) {
2034 printk(KERN_ERR "smb_proc_readdir_short: "
2035 "last dir entry outside buffer! "
2036 "%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status,
2037 req->rq_bufsize, req->rq_buffer);
2041 /* Read the last entry into the status field. */
2042 memcpy(status, last_status, SMB_STATUS_SIZE);
2045 /* Now we are ready to parse smb directory entries. */
2047 for (i = 0; i < count; i++) {
2048 p = smb_decode_short_dirent(server, p,
2049 &qname, &fattr, name_buf);
2053 if (entries_seen == 2 && qname.name[0] == '.') {
2056 if (qname.name[1] == '.' && qname.len == 2)
2059 if (!smb_fill_cache(filp, dirent, filldir, ctl,
2061 ; /* stop reading? */
2076 static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p)
2078 u64 size, disk_bytes;
2080 /* FIXME: verify nls support. all is sent as utf8? */
2085 /* FIXME: use the uniqueID from the remote instead? */
2086 /* 0 L file size in bytes */
2087 /* 8 L file size on disk in bytes (block count) */
2090 /* 56 W file type */
2093 /* 76 L unique ID (inode) */
2094 /* 84 L permissions */
2095 /* 92 L link count */
2098 disk_bytes = LVAL(p, 8);
2101 * Some samba versions round up on-disk byte usage
2102 * to 1MB boundaries, making it useless. When seeing
2103 * that, use the size instead.
2105 if (!(disk_bytes & 0xfffff))
2106 disk_bytes = size+511;
2108 fattr->f_size = size;
2109 fattr->f_blocks = disk_bytes >> 9;
2110 fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16));
2111 fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24));
2112 fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32));
2114 if (server->mnt->flags & SMB_MOUNT_UID)
2115 fattr->f_uid = server->mnt->uid;
2117 fattr->f_uid = LVAL(p, 40);
2119 if (server->mnt->flags & SMB_MOUNT_GID)
2120 fattr->f_gid = server->mnt->gid;
2122 fattr->f_gid = LVAL(p, 48);
2124 fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56));
2126 if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) {
2127 __u64 major = LVAL(p, 60);
2128 __u64 minor = LVAL(p, 68);
2130 fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff);
2131 if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) ||
2132 MINOR(fattr->f_rdev) != (minor & 0xffffffff))
2136 fattr->f_mode |= LVAL(p, 84);
2138 if ( (server->mnt->flags & SMB_MOUNT_DMODE) &&
2139 (S_ISDIR(fattr->f_mode)) )
2140 fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR;
2141 else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
2142 !(S_ISDIR(fattr->f_mode)) )
2143 fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) |
2144 (fattr->f_mode & S_IFMT);
2149 * Interpret a long filename structure using the specified info level:
2150 * level 1 for anything below NT1 protocol
2151 * level 260 for NT1 protocol
2153 * qname is filled with the decoded, and possibly translated, name
2154 * fattr receives decoded attributes.
2157 * (1) Win NT 4.0 appends a null byte to names and counts it in the length!
2160 smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level,
2161 struct qstr *qname, struct smb_fattr *fattr,
2162 unsigned char *name_buf)
2165 unsigned int len = 0;
2168 int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
2171 * SMB doesn't have a concept of inode numbers ...
2173 smb_init_dirent(server, fattr);
2174 fattr->f_ino = 0; /* FIXME: do we need this? */
2178 len = *((unsigned char *) p + 22);
2179 qname->name = p + 23;
2180 result = p + 24 + len;
2184 fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2185 fattr->f_ctime.tv_nsec = 0;
2189 fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
2190 fattr->f_atime.tv_nsec = 0;
2194 fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2195 fattr->f_mtime.tv_nsec = 0;
2196 fattr->f_size = DVAL(p, 12);
2197 /* ULONG allocation size */
2198 fattr->attr = WVAL(p, 20);
2200 VERBOSE("info 1 at %p, len=%d, name=%.*s\n",
2201 p, len, len, qname->name);
2204 result = p + WVAL(p, 0);
2206 if (len > 255) len = 255;
2207 /* NT4 null terminates, unless we are using unicode ... */
2208 qname->name = p + 94;
2209 if (!unicode && len && qname->name[len-1] == '\0')
2212 fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8));
2213 fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16));
2214 fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24));
2215 /* change time (32) */
2216 fattr->f_size = LVAL(p, 40);
2217 /* alloc size (48) */
2218 fattr->attr = DVAL(p, 56);
2220 VERBOSE("info 260 at %p, len=%d, name=%.*s\n",
2221 p, len, len, qname->name);
2223 case SMB_FIND_FILE_UNIX:
2224 result = p + WVAL(p, 0);
2225 qname->name = p + 108;
2227 len = strlen(qname->name);
2228 /* FIXME: should we check the length?? */
2231 smb_decode_unix_basic(fattr, server, p);
2232 VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n",
2233 p, len, len, qname->name);
2236 PARANOIA("Unknown info level %d\n", level);
2237 result = p + WVAL(p, 0);
2241 smb_finish_dirent(server, fattr);
2244 /* FIXME: These only work for ascii chars, and recent smbmount doesn't
2245 allow the flag to be set anyway. Remove? */
2246 switch (server->opt.case_handling) {
2247 case SMB_CASE_UPPER:
2248 str_upper(qname->name, len);
2250 case SMB_CASE_LOWER:
2251 str_lower(qname->name, len);
2259 n = server->ops->convert(name_buf, SMB_MAXNAMELEN,
2261 server->remote_nls, server->local_nls);
2264 qname->name = name_buf;
2271 /* findfirst/findnext flags */
2272 #define SMB_CLOSE_AFTER_FIRST (1<<0)
2273 #define SMB_CLOSE_IF_END (1<<1)
2274 #define SMB_REQUIRE_RESUME_KEY (1<<2)
2275 #define SMB_CONTINUE_BIT (1<<3)
2278 * Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in
2279 * source/libsmb/clilist.c. When looking for smb bugs in the readdir code,
2280 * go there for advise.
2283 * (1) When using Info Level 1 Win NT 4.0 truncates directory listings
2284 * for certain patterns of names and/or lengths. The breakage pattern
2285 * is completely reproducible and can be toggled by the creation of a
2286 * single file. (E.g. echo hi >foo breaks, rm -f foo works.)
2289 smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir,
2290 struct smb_cache_control *ctl)
2292 struct dentry *dir = filp->f_path.dentry;
2293 struct smb_sb_info *server = server_from_dentry(dir);
2295 struct smb_fattr fattr;
2297 unsigned char *p, *lastname;
2300 int first, entries_seen;
2302 /* Both NT and OS/2 accept info level 1 (but see note below). */
2303 int info_level = 260;
2304 const int max_matches = 512;
2306 unsigned int ff_searchcount = 0;
2307 unsigned int ff_eos = 0;
2308 unsigned int ff_lastname = 0;
2309 unsigned int ff_dir_handle = 0;
2310 unsigned int loop_count = 0;
2311 unsigned int mask_len, i;
2313 struct smb_request *req;
2314 unsigned char *name_buf;
2315 static struct qstr star = {
2323 * We always prefer unix style. Use info level 1 for older
2324 * servers that don't do 260.
2326 if (server->opt.capabilities & SMB_CAP_UNIX)
2327 info_level = SMB_FIND_FILE_UNIX;
2328 else if (server->opt.protocol < SMB_PROTOCOL_NT1)
2332 if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL)))
2334 if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
2336 param = req->rq_buffer;
2339 * Encode the initial path
2343 result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star);
2346 mask_len = result - 1; /* mask_len is strlen, not #bytes */
2349 VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask);
2354 while (ff_eos == 0) {
2356 if (loop_count > 10) {
2357 printk(KERN_WARNING "smb_proc_readdir_long: "
2358 "Looping in FIND_NEXT??\n");
2364 command = TRANSACT2_FINDFIRST;
2365 WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
2366 WSET(param, 2, max_matches); /* max count */
2367 WSET(param, 4, SMB_CLOSE_IF_END);
2368 WSET(param, 6, info_level);
2371 command = TRANSACT2_FINDNEXT;
2373 VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n",
2374 ff_dir_handle, ff_lastname, mask_len, mask);
2376 WSET(param, 0, ff_dir_handle); /* search handle */
2377 WSET(param, 2, max_matches); /* max count */
2378 WSET(param, 4, info_level);
2380 WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END);
2383 req->rq_trans2_command = command;
2385 req->rq_data = NULL;
2386 req->rq_lparm = 12 + mask_len + 1;
2387 req->rq_parm = param;
2389 result = smb_add_request(req);
2391 PARANOIA("error=%d, breaking\n", result);
2395 if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) {
2396 /* a damn Win95 bug - sometimes it clags if you
2398 schedule_timeout_interruptible(msecs_to_jiffies(200));
2402 if (req->rq_rcls != 0) {
2403 result = smb_errno(req);
2404 PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n",
2405 mask, result, req->rq_rcls, req->rq_err);
2409 /* parse out some important return info */
2411 ff_dir_handle = WVAL(req->rq_parm, 0);
2412 ff_searchcount = WVAL(req->rq_parm, 2);
2413 ff_eos = WVAL(req->rq_parm, 4);
2414 ff_lastname = WVAL(req->rq_parm, 8);
2416 ff_searchcount = WVAL(req->rq_parm, 0);
2417 ff_eos = WVAL(req->rq_parm, 2);
2418 ff_lastname = WVAL(req->rq_parm, 6);
2421 if (ff_searchcount == 0)
2424 /* Now we are ready to parse smb directory entries. */
2426 /* point to the data bytes */
2428 for (i = 0; i < ff_searchcount; i++) {
2429 /* make sure we stay within the buffer */
2430 if (p >= req->rq_data + req->rq_ldata) {
2431 printk(KERN_ERR "smb_proc_readdir_long: "
2432 "dirent pointer outside buffer! "
2434 p, req->rq_ldata, req->rq_data);
2435 result = -EIO; /* always a comm. error? */
2439 p = smb_decode_long_dirent(server, p, info_level,
2440 &qname, &fattr, name_buf);
2442 /* ignore . and .. from the server */
2443 if (entries_seen == 2 && qname.name[0] == '.') {
2446 if (qname.name[1] == '.' && qname.len == 2)
2450 if (!smb_fill_cache(filp, dirent, filldir, ctl,
2452 ; /* stop reading? */
2456 VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos);
2459 * We might need the lastname for continuations.
2461 * Note that some servers (win95?) point to the filename and
2462 * others (NT4, Samba using NT1) to the dir entry. We assume
2463 * here that those who do not point to a filename do not need
2464 * this info to continue the listing.
2466 * OS/2 needs this and talks infolevel 1.
2467 * NetApps want lastname with infolevel 260.
2468 * win2k want lastname with infolevel 260, and points to
2469 * the record not to the name.
2470 * Samba+CifsUnixExt doesn't need lastname.
2472 * Both are happy if we return the data they point to. So we do.
2473 * (FIXME: above is not true with win2k)
2476 if (info_level != SMB_FIND_FILE_UNIX &&
2477 ff_lastname > 0 && ff_lastname < req->rq_ldata) {
2478 lastname = req->rq_data + ff_lastname;
2480 switch (info_level) {
2482 mask_len = req->rq_ldata - ff_lastname;
2485 /* lastname points to a length byte */
2486 mask_len = *lastname++;
2487 if (ff_lastname + 1 + mask_len > req->rq_ldata)
2488 mask_len = req->rq_ldata - ff_lastname - 1;
2493 * Update the mask string for the next message.
2498 strncpy(mask, lastname, mask_len);
2500 mask_len = strnlen(mask, mask_len);
2501 VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n",
2502 mask_len, ff_lastname, req->rq_ldata, mask_len, mask);
2518 * This version uses the trans2 TRANSACT2_FINDFIRST message
2519 * to get the attribute data.
2524 smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
2525 struct smb_fattr *fattr)
2529 int mask_len, result;
2530 struct smb_request *req;
2533 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2535 param = req->rq_buffer;
2538 mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL);
2543 VERBOSE("name=%s, len=%d\n", mask, mask_len);
2544 WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
2545 WSET(param, 2, 1); /* max count */
2546 WSET(param, 4, 1); /* close after this call */
2547 WSET(param, 6, 1); /* info_level */
2550 req->rq_trans2_command = TRANSACT2_FINDFIRST;
2552 req->rq_data = NULL;
2553 req->rq_lparm = 12 + mask_len;
2554 req->rq_parm = param;
2556 result = smb_add_request(req);
2559 if (req->rq_rcls != 0) {
2560 result = smb_errno(req);
2561 #ifdef SMBFS_PARANOIA
2562 if (result != -ENOENT)
2563 PARANOIA("error for %s, rcls=%d, err=%d\n",
2564 mask, req->rq_rcls, req->rq_err);
2568 /* Make sure we got enough data ... */
2570 if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) {
2571 PARANOIA("bad result for %s, len=%d, count=%d\n",
2572 mask, req->rq_ldata, WVAL(req->rq_parm, 2));
2577 * Decode the response into the fattr ...
2579 date = WVAL(req->rq_data, 0);
2580 time = WVAL(req->rq_data, 2);
2581 fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2582 fattr->f_ctime.tv_nsec = 0;
2584 date = WVAL(req->rq_data, 4);
2585 time = WVAL(req->rq_data, 6);
2586 fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
2587 fattr->f_atime.tv_nsec = 0;
2589 date = WVAL(req->rq_data, 8);
2590 time = WVAL(req->rq_data, 10);
2591 fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2592 fattr->f_mtime.tv_nsec = 0;
2593 VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n",
2594 mask, date, time, fattr->f_mtime.tv_sec);
2595 fattr->f_size = DVAL(req->rq_data, 12);
2596 /* ULONG allocation size */
2597 fattr->attr = WVAL(req->rq_data, 20);
2607 smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
2608 struct smb_fattr *fattr)
2612 struct smb_request *req;
2615 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2618 p = smb_setup_header(req, SMBgetatr, 0, 0);
2619 result = smb_simple_encode_path(req, &p, dir, NULL);
2622 smb_setup_bcc(req, p);
2624 if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0)
2626 fattr->attr = WVAL(req->rq_header, smb_vwv0);
2627 fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1));
2628 fattr->f_mtime.tv_nsec = 0;
2629 fattr->f_size = DVAL(req->rq_header, smb_vwv3);
2630 fattr->f_ctime = fattr->f_mtime;
2631 fattr->f_atime = fattr->f_mtime;
2632 #ifdef SMBFS_DEBUG_TIMESTAMP
2633 printk("getattr_core: %s/%s, mtime=%ld\n",
2634 DENTRY_PATH(dir), fattr->f_mtime);
2646 * (1) Win 95 swaps the date and time fields in the standard info level.
2649 smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir,
2650 struct smb_request *req, int infolevel)
2655 param = req->rq_buffer;
2656 WSET(param, 0, infolevel);
2658 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
2661 p = param + 6 + result;
2663 req->rq_trans2_command = TRANSACT2_QPATHINFO;
2665 req->rq_data = NULL;
2666 req->rq_lparm = p - param;
2667 req->rq_parm = param;
2669 result = smb_add_request(req);
2672 if (req->rq_rcls != 0) {
2673 VERBOSE("for %s: result=%d, rcls=%d, err=%d\n",
2674 ¶m[6], result, req->rq_rcls, req->rq_err);
2675 result = smb_errno(req);
2679 if (req->rq_ldata < 22) {
2680 PARANOIA("not enough data for %s, len=%d\n",
2681 ¶m[6], req->rq_ldata);
2691 smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir,
2692 struct smb_fattr *attr)
2695 int off_date = 0, off_time = 2;
2697 struct smb_request *req;
2700 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2703 result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD);
2708 * Kludge alert: Win 95 swaps the date and time field,
2709 * contrary to the CIFS docs and Win NT practice.
2711 if (server->mnt->flags & SMB_MOUNT_WIN95) {
2715 date = WVAL(req->rq_data, off_date);
2716 time = WVAL(req->rq_data, off_time);
2717 attr->f_ctime.tv_sec = date_dos2unix(server, date, time);
2718 attr->f_ctime.tv_nsec = 0;
2720 date = WVAL(req->rq_data, 4 + off_date);
2721 time = WVAL(req->rq_data, 4 + off_time);
2722 attr->f_atime.tv_sec = date_dos2unix(server, date, time);
2723 attr->f_atime.tv_nsec = 0;
2725 date = WVAL(req->rq_data, 8 + off_date);
2726 time = WVAL(req->rq_data, 8 + off_time);
2727 attr->f_mtime.tv_sec = date_dos2unix(server, date, time);
2728 attr->f_mtime.tv_nsec = 0;
2729 #ifdef SMBFS_DEBUG_TIMESTAMP
2730 printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
2731 DENTRY_PATH(dir), date, time, attr->f_mtime);
2733 attr->f_size = DVAL(req->rq_data, 12);
2734 attr->attr = WVAL(req->rq_data, 20);
2743 smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir,
2744 struct smb_fattr *attr)
2746 struct smb_request *req;
2750 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2753 result = smb_proc_getattr_trans2(server, dir, req,
2754 SMB_QUERY_FILE_ALL_INFO);
2758 attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0));
2759 attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8));
2760 attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16));
2762 attr->attr = WVAL(req->rq_data, 32);
2764 /* allocated size (40) */
2765 attr->f_size = LVAL(req->rq_data, 48);
2774 smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir,
2775 struct smb_fattr *attr)
2777 struct smb_request *req;
2781 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2784 result = smb_proc_getattr_trans2(server, dir, req,
2785 SMB_QUERY_FILE_UNIX_BASIC);
2789 smb_decode_unix_basic(attr, server, req->rq_data);
2798 smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir,
2799 struct smb_fattr *attr)
2801 struct inode *inode = dir->d_inode;
2804 /* FIXME: why not use the "all" version? */
2805 result = smb_proc_getattr_trans2_std(server, dir, attr);
2810 * None of the getattr versions here can make win9x return the right
2811 * filesize if there are changes made to an open file.
2812 * A seek-to-end does return the right size, but we only need to do
2813 * that on files we have written.
2815 if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE &&
2818 __u16 fileid = SMB_I(inode)->fileid;
2819 attr->f_size = smb_proc_seek(server, fileid, 2, 0);
2827 smb_proc_ops_wait(struct smb_sb_info *server)
2831 result = wait_event_interruptible_timeout(server->conn_wq,
2832 server->conn_complete, 30*HZ);
2834 if (!result || signal_pending(current))
2841 smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir,
2842 struct smb_fattr *fattr)
2846 if (smb_proc_ops_wait(server) < 0)
2849 smb_init_dirent(server, fattr);
2850 result = server->ops->getattr(server, dir, fattr);
2851 smb_finish_dirent(server, fattr);
2857 smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir,
2858 struct smb_cache_control *ctl)
2860 struct smb_sb_info *server = server_from_dentry(filp->f_path.dentry);
2862 if (smb_proc_ops_wait(server) < 0)
2865 return server->ops->readdir(filp, dirent, filldir, ctl);
2869 smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr)
2871 struct smb_sb_info *server = server_from_dentry(dir);
2874 smb_init_dirent(server, fattr);
2875 result = server->ops->getattr(server, dir, fattr);
2876 smb_finish_dirent(server, fattr);
2883 * Because of bugs in the core protocol, we use this only to set
2884 * attributes. See smb_proc_settime() below for timestamp handling.
2887 * (1) If mtime is non-zero, both Win 3.1 and Win 95 fail
2888 * with an undocumented error (ERRDOS code 50). Setting
2889 * mtime to 0 allows the attributes to be set.
2890 * (2) The extra parameters following the name string aren't
2891 * in the CIFS docs, but seem to be necessary for operation.
2894 smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
2899 struct smb_request *req;
2902 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
2905 p = smb_setup_header(req, SMBsetatr, 8, 0);
2906 WSET(req->rq_header, smb_vwv0, attr);
2907 DSET(req->rq_header, smb_vwv1, 0); /* mtime */
2908 WSET(req->rq_header, smb_vwv3, 0); /* reserved values */
2909 WSET(req->rq_header, smb_vwv4, 0);
2910 WSET(req->rq_header, smb_vwv5, 0);
2911 WSET(req->rq_header, smb_vwv6, 0);
2912 WSET(req->rq_header, smb_vwv7, 0);
2913 result = smb_simple_encode_path(req, &p, dentry, NULL);
2916 if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) {
2917 result = -ENAMETOOLONG;
2922 smb_setup_bcc(req, p);
2924 result = smb_request_ok(req, SMBsetatr, 0, 0);
2936 * Because of bugs in the trans2 setattr messages, we must set
2937 * attributes and timestamps separately. The core SMBsetatr
2938 * message seems to be the only reliable way to set attributes.
2941 smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr)
2943 struct smb_sb_info *server = server_from_dentry(dir);
2946 VERBOSE("setting %s/%s, open=%d\n",
2947 DENTRY_PATH(dir), smb_is_open(dir->d_inode));
2948 result = smb_proc_setattr_core(server, dir, fattr->attr);
2953 * Sets the timestamps for an file open with write permissions.
2956 smb_proc_setattr_ext(struct smb_sb_info *server,
2957 struct inode *inode, struct smb_fattr *fattr)
2961 struct smb_request *req;
2964 if (! (req = smb_alloc_request(server, 0)))
2967 smb_setup_header(req, SMBsetattrE, 7, 0);
2968 WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid);
2969 /* We don't change the creation time */
2970 WSET(req->rq_header, smb_vwv1, 0);
2971 WSET(req->rq_header, smb_vwv2, 0);
2972 date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
2973 WSET(req->rq_header, smb_vwv3, date);
2974 WSET(req->rq_header, smb_vwv4, time);
2975 date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
2976 WSET(req->rq_header, smb_vwv5, date);
2977 WSET(req->rq_header, smb_vwv6, time);
2978 #ifdef SMBFS_DEBUG_TIMESTAMP
2979 printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n",
2980 date, time, fattr->f_mtime);
2983 req->rq_flags |= SMB_REQ_NORETRY;
2984 result = smb_request_ok(req, SMBsetattrE, 0, 0);
2996 * (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't
2997 * set the file's attribute flags.
3000 smb_proc_setattr_trans2(struct smb_sb_info *server,
3001 struct dentry *dir, struct smb_fattr *fattr)
3007 struct smb_request *req;
3010 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3012 param = req->rq_buffer;
3014 WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
3016 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
3019 p = param + 6 + result;
3021 WSET(data, 0, 0); /* creation time */
3023 date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
3024 WSET(data, 4, date);
3025 WSET(data, 6, time);
3026 date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
3027 WSET(data, 8, date);
3028 WSET(data, 10, time);
3029 #ifdef SMBFS_DEBUG_TIMESTAMP
3030 printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
3031 DENTRY_PATH(dir), date, time, fattr->f_mtime);
3033 DSET(data, 12, 0); /* size */
3034 DSET(data, 16, 0); /* blksize */
3035 WSET(data, 20, 0); /* attr */
3036 DSET(data, 22, 0); /* ULONG EA size */
3038 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3040 req->rq_data = data;
3041 req->rq_lparm = p - param;
3042 req->rq_parm = param;
3044 result = smb_add_request(req);
3048 if (req->rq_rcls != 0)
3049 result = smb_errno(req);
3065 * ATTR_ATIME_SET 0x080
3066 * ATTR_MTIME_SET 0x100
3068 * ATTR_ATTR_FLAG 0x400
3070 * major/minor should only be set by mknod.
3073 smb_proc_setattr_unix(struct dentry *d, struct iattr *attr,
3074 unsigned int major, unsigned int minor)
3076 struct smb_sb_info *server = server_from_dentry(d);
3081 struct smb_request *req;
3084 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3086 param = req->rq_buffer;
3088 DEBUG1("valid flags = 0x%04x\n", attr->ia_valid);
3090 WSET(param, 0, SMB_SET_FILE_UNIX_BASIC);
3092 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
3095 p = param + 6 + result;
3097 /* 0 L file size in bytes */
3098 /* 8 L file size on disk in bytes (block count) */
3101 /* 56 W file type enum */
3104 /* 76 L unique ID (inode) */
3105 /* 84 L permissions */
3106 /* 92 L link count */
3107 LSET(data, 0, SMB_SIZE_NO_CHANGE);
3108 LSET(data, 8, SMB_SIZE_NO_CHANGE);
3109 LSET(data, 16, SMB_TIME_NO_CHANGE);
3110 LSET(data, 24, SMB_TIME_NO_CHANGE);
3111 LSET(data, 32, SMB_TIME_NO_CHANGE);
3112 LSET(data, 40, SMB_UID_NO_CHANGE);
3113 LSET(data, 48, SMB_GID_NO_CHANGE);
3114 DSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
3115 LSET(data, 60, major);
3116 LSET(data, 68, minor);
3118 LSET(data, 84, SMB_MODE_NO_CHANGE);
3121 if (attr->ia_valid & ATTR_SIZE) {
3122 LSET(data, 0, attr->ia_size);
3123 LSET(data, 8, 0); /* can't set anyway */
3127 * FIXME: check the conversion function it the correct one
3129 * we can't set ctime but we might as well pass this to the server
3130 * and let it ignore it.
3132 if (attr->ia_valid & ATTR_CTIME) {
3133 nttime = smb_unixutc2ntutc(attr->ia_ctime);
3134 LSET(data, 16, nttime);
3136 if (attr->ia_valid & ATTR_ATIME) {
3137 nttime = smb_unixutc2ntutc(attr->ia_atime);
3138 LSET(data, 24, nttime);
3140 if (attr->ia_valid & ATTR_MTIME) {
3141 nttime = smb_unixutc2ntutc(attr->ia_mtime);
3142 LSET(data, 32, nttime);
3145 if (attr->ia_valid & ATTR_UID) {
3146 LSET(data, 40, attr->ia_uid);
3148 if (attr->ia_valid & ATTR_GID) {
3149 LSET(data, 48, attr->ia_gid);
3152 if (attr->ia_valid & ATTR_MODE) {
3153 LSET(data, 84, attr->ia_mode);
3156 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3157 req->rq_ldata = 100;
3158 req->rq_data = data;
3159 req->rq_lparm = p - param;
3160 req->rq_parm = param;
3162 result = smb_add_request(req);
3172 * Set the modify and access timestamps for a file.
3174 * Incredibly enough, in all of SMB there is no message to allow
3175 * setting both attributes and timestamps at once.
3178 * (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message
3179 * with info level 1 (INFO_STANDARD).
3180 * (2) Win 95 seems not to support setting directory timestamps.
3181 * (3) Under the core protocol apparently the only way to set the
3182 * timestamp is to open and close the file.
3185 smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr)
3187 struct smb_sb_info *server = server_from_dentry(dentry);
3188 struct inode *inode = dentry->d_inode;
3191 VERBOSE("setting %s/%s, open=%d\n",
3192 DENTRY_PATH(dentry), smb_is_open(inode));
3194 /* setting the time on a Win95 server fails (tridge) */
3195 if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 &&
3196 !(server->mnt->flags & SMB_MOUNT_WIN95)) {
3197 if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY)
3198 result = smb_proc_setattr_ext(server, inode, fattr);
3200 result = smb_proc_setattr_trans2(server, dentry, fattr);
3203 * Fail silently on directories ... timestamp can't be set?
3206 if (S_ISREG(inode->i_mode)) {
3208 * Set the mtime by opening and closing the file.
3209 * Note that the file is opened read-only, but this
3210 * still allows us to set the date (tridge)
3213 if (!smb_is_open(inode))
3214 smb_proc_open(server, dentry, SMB_O_RDONLY);
3215 if (smb_is_open(inode)) {
3216 inode->i_mtime = fattr->f_mtime;
3217 result = smb_proc_close_inode(server, inode);
3226 smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr)
3228 struct smb_sb_info *server = SMB_SB(dentry->d_sb);
3232 struct smb_request *req;
3235 if (! (req = smb_alloc_request(server, 0)))
3238 smb_setup_header(req, SMBdskattr, 0, 0);
3239 if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0)
3241 p = SMB_VWV(req->rq_header);
3242 unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT;
3243 attr->f_blocks = WVAL(p, 0) * unit;
3244 attr->f_bsize = SMB_ST_BLKSIZE;
3245 attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit;
3255 smb_proc_read_link(struct smb_sb_info *server, struct dentry *d,
3256 char *buffer, int len)
3260 struct smb_request *req;
3262 DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d));
3265 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3267 param = req->rq_buffer;
3269 WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK);
3271 result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
3274 p = param + 6 + result;
3276 req->rq_trans2_command = TRANSACT2_QPATHINFO;
3278 req->rq_data = NULL;
3279 req->rq_lparm = p - param;
3280 req->rq_parm = param;
3282 result = smb_add_request(req);
3285 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3286 ¶m[6], result, req->rq_rcls, req->rq_err);
3288 /* copy data up to the \0 or buffer length */
3290 if (req->rq_ldata < len)
3291 result = req->rq_ldata;
3292 strncpy(buffer, req->rq_data, result);
3302 * Create a symlink object called dentry which points to oldpath.
3303 * Samba does not permit dangling links but returns a suitable error message.
3306 smb_proc_symlink(struct smb_sb_info *server, struct dentry *d,
3307 const char *oldpath)
3311 struct smb_request *req;
3314 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3316 param = req->rq_buffer;
3318 WSET(param, 0, SMB_SET_FILE_UNIX_LINK);
3320 result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL);
3323 p = param + 6 + result;
3325 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3326 req->rq_ldata = strlen(oldpath) + 1;
3327 req->rq_data = (char *) oldpath;
3328 req->rq_lparm = p - param;
3329 req->rq_parm = param;
3331 result = smb_add_request(req);
3335 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3336 ¶m[6], result, req->rq_rcls, req->rq_err);
3346 * Create a hard link object called new_dentry which points to dentry.
3349 smb_proc_link(struct smb_sb_info *server, struct dentry *dentry,
3350 struct dentry *new_dentry)
3354 struct smb_request *req;
3357 if (! (req = smb_alloc_request(server, PAGE_SIZE)))
3359 param = req->rq_buffer;
3361 WSET(param, 0, SMB_SET_FILE_UNIX_HLINK);
3363 result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1,
3367 p = param + 6 + result;
3369 /* Grr, pointless separation of parameters and data ... */
3371 req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1,
3374 req->rq_trans2_command = TRANSACT2_SETPATHINFO;
3375 req->rq_lparm = p - param;
3376 req->rq_parm = param;
3378 result = smb_add_request(req);
3382 DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
3383 ¶m[6], result, req->rq_rcls, req->rq_err);
3393 smb_proc_query_cifsunix(struct smb_sb_info *server)
3399 struct smb_request *req;
3402 if (! (req = smb_alloc_request(server, 100)))
3405 WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO);
3407 req->rq_trans2_command = TRANSACT2_QFSINFO;
3409 req->rq_data = NULL;
3411 req->rq_parm = param;
3413 result = smb_add_request(req);
3417 if (req->rq_ldata < 12) {
3418 PARANOIA("Not enough data\n");
3421 major = WVAL(req->rq_data, 0);
3422 minor = WVAL(req->rq_data, 2);
3424 DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n",
3426 /* FIXME: verify that we are ok with this major/minor? */
3428 caps = LVAL(req->rq_data, 4);
3429 DEBUG1("Server capabilities 0x%016llx\n", caps);
3439 install_ops(struct smb_ops *dst, struct smb_ops *src)
3441 memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC);
3445 static struct smb_ops smb_ops_core =
3447 .read = smb_proc_read,
3448 .write = smb_proc_write,
3449 .readdir = smb_proc_readdir_short,
3450 .getattr = smb_proc_getattr_core,
3451 .truncate = smb_proc_trunc32,
3454 /* LANMAN2, OS/2, others? */
3455 static struct smb_ops smb_ops_os2 =
3457 .read = smb_proc_read,
3458 .write = smb_proc_write,
3459 .readdir = smb_proc_readdir_long,
3460 .getattr = smb_proc_getattr_trans2_std,
3461 .truncate = smb_proc_trunc32,
3464 /* Win95, and possibly some NetApp versions too */
3465 static struct smb_ops smb_ops_win95 =
3467 .read = smb_proc_read, /* does not support 12word readX */
3468 .write = smb_proc_write,
3469 .readdir = smb_proc_readdir_long,
3470 .getattr = smb_proc_getattr_95,
3471 .truncate = smb_proc_trunc95,
3474 /* Samba, NT4 and NT5 */
3475 static struct smb_ops smb_ops_winNT =
3477 .read = smb_proc_readX,
3478 .write = smb_proc_writeX,
3479 .readdir = smb_proc_readdir_long,
3480 .getattr = smb_proc_getattr_trans2_all,
3481 .truncate = smb_proc_trunc64,
3484 /* Samba w/ unix extensions. Others? */
3485 static struct smb_ops smb_ops_unix =
3487 .read = smb_proc_readX,
3488 .write = smb_proc_writeX,
3489 .readdir = smb_proc_readdir_long,
3490 .getattr = smb_proc_getattr_unix,
3491 /* FIXME: core/ext/time setattr needs to be cleaned up! */
3492 /* .setattr = smb_proc_setattr_unix, */
3493 .truncate = smb_proc_trunc64,
3496 /* Place holder until real ops are in place */
3497 static struct smb_ops smb_ops_null =
3499 .readdir = smb_proc_readdir_null,
3500 .getattr = smb_proc_getattr_null,
3503 void smb_install_null_ops(struct smb_ops *ops)
3505 install_ops(ops, &smb_ops_null);