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-rw-r--r--fs/smbfs/proc.c1969
1 files changed, 1969 insertions, 0 deletions
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c
new file mode 100644
index 000000000..ee998a89f
--- /dev/null
+++ b/fs/smbfs/proc.c
@@ -0,0 +1,1969 @@
+/*
+ * proc.c
+ *
+ * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
+ *
+ * 28/06/96 - Fixed long file name support (smb_proc_readdir_long) by Yuri Per
+ */
+
+#include <linux/config.h>
+#include <linux/fs.h>
+#include <linux/smbno.h>
+#include <linux/smb_fs.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/malloc.h>
+#include <linux/stat.h>
+#include <linux/fcntl.h>
+
+#include <asm/uaccess.h>
+#include <asm/string.h>
+
+#define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)
+#define SMB_CMD(packet) (BVAL(packet,8))
+#define SMB_WCT(packet) (BVAL(packet, SMB_HEADER_LEN - 1))
+#define SMB_BCC(packet) smb_bcc(packet)
+#define SMB_BUF(packet) ((packet) + SMB_HEADER_LEN + SMB_WCT(packet) * 2 + 2)
+
+#define SMB_DIRINFO_SIZE 43
+#define SMB_STATUS_SIZE 21
+
+static int smb_request_ok(struct smb_server *s, int command, int wct, int bcc);
+
+static inline int
+min(int a, int b)
+{
+ return a < b ? a : b;
+}
+
+static void
+str_upper(char *name)
+{
+ while (*name)
+ {
+ if (*name >= 'a' && *name <= 'z')
+ *name -= ('a' - 'A');
+ name++;
+ }
+}
+
+static void
+str_lower(char *name)
+{
+ while (*name)
+ {
+ if (*name >= 'A' && *name <= 'Z')
+ *name += ('a' - 'A');
+ name++;
+ }
+}
+
+/*****************************************************************************/
+/* */
+/* Encoding/Decoding section */
+/* */
+/*****************************************************************************/
+
+static inline byte *
+smb_decode_word(byte * p, word * data)
+{
+ *data = WVAL(p, 0);
+ return p + 2;
+}
+
+byte *
+smb_encode_smb_length(byte * p, dword len)
+{
+ BSET(p, 0, 0);
+ BSET(p, 1, 0);
+ BSET(p, 2, (len & 0xFF00) >> 8);
+ BSET(p, 3, (len & 0xFF));
+ if (len > 0xFFFF)
+ {
+ BSET(p, 1, 1);
+ }
+ return p + 4;
+}
+
+static byte *
+smb_encode_ascii(byte * p, const byte * name, int len)
+{
+ *p++ = 4;
+ strcpy(p, name);
+ return p + len + 1;
+}
+
+static byte *
+smb_encode_this_name(byte * p, const char *name, const int len)
+{
+ *p++ = '\\';
+ strncpy(p, name, len);
+ return p + len;
+}
+
+/* I put smb_encode_parents into a separate function so that the
+ recursion only takes 16 bytes on the stack per path component on a
+ 386. */
+
+static byte *
+smb_encode_parents(byte * p, struct smb_inode_info *ino)
+{
+ byte *q;
+
+ if (ino->dir == NULL)
+ {
+ return p;
+ }
+ q = smb_encode_parents(p, ino->dir);
+ if (q - p + 1 + ino->finfo.len > SMB_MAXPATHLEN)
+ {
+ return p;
+ }
+ return smb_encode_this_name(q, ino->finfo.name, ino->finfo.len);
+}
+
+static byte *
+smb_encode_path(struct smb_server *server,
+ byte * p, struct smb_inode_info *dir,
+ const char *name, const int len)
+{
+ byte *start = p;
+ p = smb_encode_parents(p, dir);
+ p = smb_encode_this_name(p, name, len);
+ *p++ = 0;
+ if (server->protocol <= PROTOCOL_COREPLUS)
+ {
+ str_upper(start);
+ }
+ return p;
+}
+
+static byte *
+smb_decode_data(byte * p, byte * data, word * data_len, int fs)
+{
+ word len;
+
+ if (!(*p == 1 || *p == 5))
+ {
+ printk("smb_decode_data: Warning! Data block not starting "
+ "with 1 or 5\n");
+ }
+ len = WVAL(p, 1);
+ p += 3;
+
+ if (fs)
+ copy_to_user(data, p, len);
+ else
+ memcpy(data, p, len);
+
+ *data_len = len;
+
+ return p + len;
+}
+
+static byte *
+smb_name_mangle(byte * p, const byte * name)
+{
+ int len, pad = 0;
+
+ len = strlen(name);
+
+ if (len < 16)
+ pad = 16 - len;
+
+ *p++ = 2 * (len + pad);
+
+ while (*name)
+ {
+ *p++ = (*name >> 4) + 'A';
+ *p++ = (*name & 0x0F) + 'A';
+ name++;
+ }
+ while (pad--)
+ {
+ *p++ = 'C';
+ *p++ = 'A';
+ }
+ *p++ = '\0';
+
+ return p;
+}
+
+/* The following are taken directly from msdos-fs */
+
+/* Linear day numbers of the respective 1sts in non-leap years. */
+
+static int day_n[] =
+{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
+ /* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
+
+
+extern struct timezone sys_tz;
+
+static int
+utc2local(int time)
+{
+ return time - sys_tz.tz_minuteswest * 60;
+}
+
+static int
+local2utc(int time)
+{
+ return time + sys_tz.tz_minuteswest * 60;
+}
+
+/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
+
+static int
+date_dos2unix(unsigned short time, unsigned short date)
+{
+ int month, year, secs;
+
+ month = ((date >> 5) & 15) - 1;
+ year = date >> 9;
+ secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
+ ((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
+ month < 2 ? 1 : 0) + 3653);
+ /* days since 1.1.70 plus 80's leap day */
+ return local2utc(secs);
+}
+
+
+/* Convert linear UNIX date to a MS-DOS time/date pair. */
+
+static void
+date_unix2dos(int unix_date, byte * date, byte * time)
+{
+ int day, year, nl_day, month;
+
+ unix_date = utc2local(unix_date);
+ WSET(time, 0,
+ (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) +
+ (((unix_date / 3600) % 24) << 11));
+ day = unix_date / 86400 - 3652;
+ year = day / 365;
+ if ((year + 3) / 4 + 365 * year > day)
+ year--;
+ day -= (year + 3) / 4 + 365 * year;
+ if (day == 59 && !(year & 3))
+ {
+ nl_day = day;
+ month = 2;
+ } else
+ {
+ nl_day = (year & 3) || day <= 59 ? day : day - 1;
+ for (month = 0; month < 12; month++)
+ if (day_n[month] > nl_day)
+ break;
+ }
+ WSET(date, 0,
+ nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9));
+}
+
+
+
+/*****************************************************************************/
+/* */
+/* Support section. */
+/* */
+/*****************************************************************************/
+
+dword
+smb_len(byte * p)
+{
+ return ((BVAL(p, 1) & 0x1) << 16L) | (BVAL(p, 2) << 8L) | (BVAL(p, 3));
+}
+
+static word
+smb_bcc(byte * packet)
+{
+ int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(word);
+ return WVAL(packet, pos);
+}
+
+/* smb_valid_packet: We check if packet fulfills the basic
+ requirements of a smb packet */
+
+static int
+smb_valid_packet(byte * packet)
+{
+ DDPRINTK("len: %d, wct: %d, bcc: %d\n",
+ smb_len(packet), SMB_WCT(packet), SMB_BCC(packet));
+ return (packet[4] == 0xff
+ && packet[5] == 'S'
+ && packet[6] == 'M'
+ && packet[7] == 'B'
+ && (smb_len(packet) + 4 == SMB_HEADER_LEN
+ + SMB_WCT(packet) * 2 + SMB_BCC(packet)));
+}
+
+/* smb_verify: We check if we got the answer we expected, and if we
+ got enough data. If bcc == -1, we don't care. */
+
+static int
+smb_verify(byte * packet, int command, int wct, int bcc)
+{
+ return (SMB_CMD(packet) == command &&
+ SMB_WCT(packet) >= wct &&
+ (bcc == -1 || SMB_BCC(packet) >= bcc)) ? 0 : -EIO;
+}
+
+static int
+smb_errno(int errcls, int error)
+{
+ if (errcls == ERRDOS)
+ switch (error)
+ {
+ case ERRbadfunc:
+ return EINVAL;
+ case ERRbadfile:
+ return ENOENT;
+ case ERRbadpath:
+ return ENOENT;
+ case ERRnofids:
+ return EMFILE;
+ case ERRnoaccess:
+ return EACCES;
+ case ERRbadfid:
+ return EBADF;
+ case ERRbadmcb:
+ return EREMOTEIO;
+ case ERRnomem:
+ return ENOMEM;
+ case ERRbadmem:
+ return EFAULT;
+ case ERRbadenv:
+ return EREMOTEIO;
+ case ERRbadformat:
+ return EREMOTEIO;
+ case ERRbadaccess:
+ return EACCES;
+ case ERRbaddata:
+ return E2BIG;
+ case ERRbaddrive:
+ return ENXIO;
+ case ERRremcd:
+ return EREMOTEIO;
+ case ERRdiffdevice:
+ return EXDEV;
+ case ERRnofiles:
+ return 0;
+ case ERRbadshare:
+ return ETXTBSY;
+ case ERRlock:
+ return EDEADLK;
+ case ERRfilexists:
+ return EEXIST;
+ case 87:
+ return 0; /* Unknown error!! */
+ /* This next error seems to occur on an mv when
+ * the destination exists */
+ case 183:
+ return EEXIST;
+ default:
+ return EIO;
+ } else if (errcls == ERRSRV)
+ switch (error)
+ {
+ case ERRerror:
+ return ENFILE;
+ case ERRbadpw:
+ return EINVAL;
+ case ERRbadtype:
+ return EIO;
+ case ERRaccess:
+ return EACCES;
+ default:
+ return EIO;
+ } else if (errcls == ERRHRD)
+ switch (error)
+ {
+ case ERRnowrite:
+ return EROFS;
+ case ERRbadunit:
+ return ENODEV;
+ case ERRnotready:
+ return EUCLEAN;
+ case ERRbadcmd:
+ return EIO;
+ case ERRdata:
+ return EIO;
+ case ERRbadreq:
+ return ERANGE;
+ case ERRbadshare:
+ return ETXTBSY;
+ case ERRlock:
+ return EDEADLK;
+ default:
+ return EIO;
+ } else if (errcls == ERRCMD)
+ return EIO;
+ return 0;
+}
+
+static void
+smb_lock_server(struct smb_server *server)
+{
+ while (server->lock)
+ sleep_on(&server->wait);
+ server->lock = 1;
+}
+
+static void
+smb_unlock_server(struct smb_server *server)
+{
+ if (server->lock != 1)
+ {
+ printk("smb_unlock_server: was not locked!\n");
+ }
+ server->lock = 0;
+ wake_up(&server->wait);
+}
+
+/* smb_request_ok: We expect the server to be locked. Then we do the
+ request and check the answer completely. When smb_request_ok
+ returns 0, you can be quite sure that everything went well. When
+ the answer is <=0, the returned number is a valid unix errno. */
+
+static int
+smb_request_ok(struct smb_server *s, int command, int wct, int bcc)
+{
+ int result = 0;
+ s->rcls = 0;
+ s->err = 0;
+
+ if (smb_request(s) < 0)
+ {
+ DPRINTK("smb_request failed\n");
+ result = -EIO;
+ } else if (smb_valid_packet(s->packet) != 0)
+ {
+ DPRINTK("not a valid packet!\n");
+ result = -EIO;
+ } else if (s->rcls != 0)
+ {
+ result = -smb_errno(s->rcls, s->err);
+ } else if (smb_verify(s->packet, command, wct, bcc) != 0)
+ {
+ DPRINTK("smb_verify failed\n");
+ result = -EIO;
+ }
+ return result;
+}
+
+/* smb_retry: This function should be called when smb_request_ok has
+ indicated an error. If the error was indicated because the
+ connection was killed, we try to reconnect. If smb_retry returns 0,
+ the error was indicated for another reason, so a retry would not be
+ of any use. */
+
+static int
+smb_retry(struct smb_server *server)
+{
+ if (server->state != CONN_INVALID)
+ {
+ return 0;
+ }
+ if (smb_release(server) < 0)
+ {
+ DPRINTK("smb_retry: smb_release failed\n");
+ server->state = CONN_RETRIED;
+ return 0;
+ }
+ if (smb_proc_reconnect(server) < 0)
+ {
+ DPRINTK("smb_proc_reconnect failed\n");
+ server->state = CONN_RETRIED;
+ return 0;
+ }
+ server->state = CONN_VALID;
+ return 1;
+}
+
+static int
+smb_request_ok_unlock(struct smb_server *s, int command, int wct, int bcc)
+{
+ int result = smb_request_ok(s, command, wct, bcc);
+
+ smb_unlock_server(s);
+
+ return result;
+}
+
+/* smb_setup_header: We completely set up the packet. You only have to
+ insert the command-specific fields */
+
+__u8 *
+smb_setup_header(struct smb_server * server, byte command, word wct, word bcc)
+{
+ dword xmit_len = SMB_HEADER_LEN + wct * sizeof(word) + bcc + 2;
+ byte *p = server->packet;
+ byte *buf = server->packet;
+
+ p = smb_encode_smb_length(p, xmit_len - 4);
+
+ BSET(p, 0, 0xff);
+ BSET(p, 1, 'S');
+ BSET(p, 2, 'M');
+ BSET(p, 3, 'B');
+ BSET(p, 4, command);
+
+ p += 5;
+ memset(p, '\0', 19);
+ p += 19;
+ p += 8;
+
+ WSET(buf, smb_tid, server->tid);
+ WSET(buf, smb_pid, server->pid);
+ WSET(buf, smb_uid, server->server_uid);
+ WSET(buf, smb_mid, server->mid);
+
+ if (server->protocol > PROTOCOL_CORE)
+ {
+ BSET(buf, smb_flg, 0x8);
+ WSET(buf, smb_flg2, 0x3);
+ }
+ *p++ = wct; /* wct */
+ p += 2 * wct;
+ WSET(p, 0, bcc);
+ return p + 2;
+}
+
+/* smb_setup_header_exclusive waits on server->lock and locks the
+ server, when it's free. You have to unlock it manually when you're
+ finished with server->packet! */
+
+static byte *
+smb_setup_header_exclusive(struct smb_server *server,
+ byte command, word wct, word bcc)
+{
+ smb_lock_server(server);
+ return smb_setup_header(server, command, wct, bcc);
+}
+
+static void
+smb_setup_bcc(struct smb_server *server, byte * p)
+{
+ __u8 *packet = server->packet;
+ __u8 *pbcc = packet + SMB_HEADER_LEN + 2 * SMB_WCT(packet);
+ __u16 bcc = p - (pbcc + 2);
+
+ WSET(pbcc, 0, bcc);
+ smb_encode_smb_length(packet,
+ SMB_HEADER_LEN + 2 * SMB_WCT(packet) - 2 + bcc);
+}
+
+
+/*****************************************************************************/
+/* */
+/* File operation section. */
+/* */
+/*****************************************************************************/
+
+int
+smb_proc_open(struct smb_server *server,
+ struct smb_inode_info *dir, const char *name, int len,
+ struct smb_dirent *entry)
+{
+ int error;
+ char *p;
+ char *buf;
+ const word o_attr = aSYSTEM | aHIDDEN | aDIR;
+
+ DPRINTK("smb_proc_open: name=%s\n", name);
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ if (entry->opened != 0)
+ {
+ /* Somebody else opened the file while we slept */
+ smb_unlock_server(server);
+ return 0;
+ }
+ retry:
+ p = smb_setup_header(server, SMBopen, 2, 0);
+ WSET(buf, smb_vwv0, 0x42); /* read/write */
+ WSET(buf, smb_vwv1, o_attr);
+ *p++ = 4;
+ p = smb_encode_path(server, p, dir, name, len);
+ smb_setup_bcc(server, p);
+
+ if ((error = smb_request_ok(server, SMBopen, 7, 0)) != 0)
+ {
+
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ if ((error != -EACCES) && (error != -ETXTBSY)
+ && (error != -EROFS))
+ {
+ smb_unlock_server(server);
+ return error;
+ }
+ p = smb_setup_header(server, SMBopen, 2, 0);
+ WSET(buf, smb_vwv0, 0x40); /* read only */
+ WSET(buf, smb_vwv1, o_attr);
+ *p++ = 4;
+ p = smb_encode_path(server, p, dir, name, len);
+ smb_setup_bcc(server, p);
+
+ if ((error = smb_request_ok(server, SMBopen, 7, 0)) != 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ smb_unlock_server(server);
+ return error;
+ }
+ }
+ /* We should now have data in vwv[0..6]. */
+
+ entry->fileid = WVAL(buf, smb_vwv0);
+ entry->attr = WVAL(buf, smb_vwv1);
+ entry->f_ctime = entry->f_atime =
+ entry->f_mtime = local2utc(DVAL(buf, smb_vwv2));
+ entry->f_size = DVAL(buf, smb_vwv4);
+ entry->access = WVAL(buf, smb_vwv6);
+
+ entry->opened = 1;
+ entry->access &= 3;
+
+ smb_unlock_server(server);
+
+ DPRINTK("smb_proc_open: entry->access = %d\n", entry->access);
+ return 0;
+}
+
+int
+smb_proc_close(struct smb_server *server,
+ __u16 fileid, __u32 mtime)
+{
+ char *buf;
+
+ smb_setup_header_exclusive(server, SMBclose, 3, 0);
+ buf = server->packet;
+ WSET(buf, smb_vwv0, fileid);
+ DSET(buf, smb_vwv1, utc2local(mtime));
+
+ return smb_request_ok_unlock(server, SMBclose, 0, 0);
+}
+
+/* In smb_proc_read and smb_proc_write we do not retry, because the
+ file-id would not be valid after a reconnection. */
+
+/* smb_proc_read: fs indicates if it should be copied with
+ copy_to_user. */
+
+int
+smb_proc_read(struct smb_server *server, struct smb_dirent *finfo,
+ off_t offset, long count, char *data, int fs)
+{
+ word returned_count, data_len;
+ char *buf;
+ int error;
+
+ smb_setup_header_exclusive(server, SMBread, 5, 0);
+ buf = server->packet;
+
+ WSET(buf, smb_vwv0, finfo->fileid);
+ WSET(buf, smb_vwv1, count);
+ DSET(buf, smb_vwv2, offset);
+ WSET(buf, smb_vwv4, 0);
+
+ if ((error = smb_request_ok(server, SMBread, 5, -1)) < 0)
+ {
+ smb_unlock_server(server);
+ return error;
+ }
+ returned_count = WVAL(buf, smb_vwv0);
+
+ smb_decode_data(SMB_BUF(server->packet), data, &data_len, fs);
+
+ smb_unlock_server(server);
+
+ if (returned_count != data_len)
+ {
+ printk("smb_proc_read: Warning, returned_count != data_len\n");
+ printk("smb_proc_read: ret_c=%d, data_len=%d\n",
+ returned_count, data_len);
+ }
+ return data_len;
+}
+
+int
+smb_proc_write(struct smb_server *server, struct smb_dirent *finfo,
+ off_t offset, int count, const char *data)
+{
+ int res = 0;
+ char *buf;
+ byte *p;
+
+ p = smb_setup_header_exclusive(server, SMBwrite, 5, count + 3);
+ buf = server->packet;
+ WSET(buf, smb_vwv0, finfo->fileid);
+ WSET(buf, smb_vwv1, count);
+ DSET(buf, smb_vwv2, offset);
+ WSET(buf, smb_vwv4, 0);
+
+ *p++ = 1;
+ WSET(p, 0, count);
+ copy_from_user(p + 2, data, count);
+
+ if ((res = smb_request_ok(server, SMBwrite, 1, 0)) >= 0)
+ {
+ res = WVAL(buf, smb_vwv0);
+ }
+ smb_unlock_server(server);
+
+ return res;
+}
+
+int
+smb_proc_create(struct inode *dir, const char *name, int len,
+ word attr, time_t ctime)
+{
+ int error;
+ char *p;
+ struct smb_server *server = SMB_SERVER(dir);
+ char *buf;
+ __u16 fileid;
+
+ smb_lock_server(server);
+ buf = server->packet;
+ retry:
+ p = smb_setup_header(server, SMBcreate, 3, 0);
+ WSET(buf, smb_vwv0, attr);
+ DSET(buf, smb_vwv1, utc2local(ctime));
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
+ smb_setup_bcc(server, p);
+
+ if ((error = smb_request_ok(server, SMBcreate, 1, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ smb_unlock_server(server);
+ return error;
+ }
+ fileid = WVAL(buf, smb_vwv0);
+ smb_unlock_server(server);
+
+ smb_proc_close(server, fileid, CURRENT_TIME);
+
+ return 0;
+}
+
+int
+smb_proc_mv(struct inode *odir, const char *oname, const int olen,
+ struct inode *ndir, const char *nname, const int nlen)
+{
+ char *p;
+ struct smb_server *server = SMB_SERVER(odir);
+ char *buf;
+ int result;
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ retry:
+ p = smb_setup_header(server, SMBmv, 1, 0);
+ WSET(buf, smb_vwv0, aSYSTEM | aHIDDEN);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(odir), oname, olen);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(ndir), nname, nlen);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBmv, 0, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+int
+smb_proc_mkdir(struct inode *dir, const char *name, const int len)
+{
+ char *p;
+ int result;
+ struct smb_server *server = SMB_SERVER(dir);
+
+ smb_lock_server(server);
+
+ retry:
+ p = smb_setup_header(server, SMBmkdir, 0, 0);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBmkdir, 0, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+int
+smb_proc_rmdir(struct inode *dir, const char *name, const int len)
+{
+ char *p;
+ int result;
+ struct smb_server *server = SMB_SERVER(dir);
+
+ smb_lock_server(server);
+
+
+ retry:
+ p = smb_setup_header(server, SMBrmdir, 0, 0);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBrmdir, 0, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+int
+smb_proc_unlink(struct inode *dir, const char *name, const int len)
+{
+ char *p;
+ struct smb_server *server = SMB_SERVER(dir);
+ char *buf;
+ int result;
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ retry:
+ p = smb_setup_header(server, SMBunlink, 1, 0);
+ WSET(buf, smb_vwv0, aSYSTEM | aHIDDEN);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBunlink, 0, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+int
+smb_proc_trunc(struct smb_server *server, word fid, dword length)
+{
+ char *p;
+ char *buf;
+ int result;
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ retry:
+ p = smb_setup_header(server, SMBwrite, 5, 0);
+ WSET(buf, smb_vwv0, fid);
+ WSET(buf, smb_vwv1, 0);
+ DSET(buf, smb_vwv2, length);
+ WSET(buf, smb_vwv4, 0);
+ p = smb_encode_ascii(p, "", 0);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBwrite, 1, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+static void
+smb_init_dirent(struct smb_server *server, struct smb_dirent *entry)
+{
+ memset(entry, 0, sizeof(struct smb_dirent));
+
+ entry->f_nlink = 1;
+ entry->f_uid = server->m.uid;
+ entry->f_gid = server->m.gid;
+ entry->f_blksize = 512;
+}
+
+static void
+smb_finish_dirent(struct smb_server *server, struct smb_dirent *entry)
+{
+ if ((entry->attr & aDIR) != 0)
+ {
+ entry->f_mode = server->m.dir_mode;
+ entry->f_size = 512;
+ } else
+ {
+ entry->f_mode = server->m.file_mode;
+ }
+
+ if ((entry->f_blksize != 0) && (entry->f_size != 0))
+ {
+ entry->f_blocks =
+ (entry->f_size - 1) / entry->f_blksize + 1;
+ } else
+ {
+ entry->f_blocks = 0;
+ }
+ return;
+}
+
+void
+smb_init_root_dirent(struct smb_server *server, struct smb_dirent *entry)
+{
+ smb_init_dirent(server, entry);
+ entry->attr = aDIR;
+ entry->f_ino = 1;
+ smb_finish_dirent(server, entry);
+}
+
+
+static char *
+smb_decode_dirent(struct smb_server *server, char *p, struct smb_dirent *entry)
+{
+ smb_init_dirent(server, entry);
+
+ p += SMB_STATUS_SIZE; /* reserved (search_status) */
+ entry->attr = BVAL(p, 0);
+ entry->f_mtime = entry->f_atime = entry->f_ctime =
+ date_dos2unix(WVAL(p, 1), WVAL(p, 3));
+ entry->f_size = DVAL(p, 5);
+ entry->len = strlen(p + 9);
+ if (entry->len > 12)
+ {
+ entry->len = 12;
+ }
+ memcpy(entry->name, p + 9, entry->len);
+ entry->name[entry->len] = '\0';
+ while (entry->len > 2)
+ {
+ /* Pathworks fills names with spaces */
+ entry->len -= 1;
+ if (entry->name[entry->len] == ' ')
+ {
+ entry->name[entry->len] = '\0';
+ }
+ }
+ switch (server->case_handling)
+ {
+ case CASE_UPPER:
+ str_upper(entry->name);
+ break;
+ case CASE_LOWER:
+ str_lower(entry->name);
+ break;
+ default:
+ break;
+ }
+ DPRINTK("smb_decode_dirent: name = %s\n", entry->name);
+ smb_finish_dirent(server, entry);
+ return p + 22;
+}
+
+/* This routine is used to read in directory entries from the network.
+ Note that it is for short directory name seeks, i.e.: protocol <
+ PROTOCOL_LANMAN2 */
+
+static int
+smb_proc_readdir_short(struct smb_server *server, struct inode *dir, int fpos,
+ int cache_size, struct smb_dirent *entry)
+{
+ char *p;
+ char *buf;
+ int error;
+ int result;
+ int i;
+ int first, total_count;
+ struct smb_dirent *current_entry;
+ word bcc;
+ word count;
+ char status[SMB_STATUS_SIZE];
+ int entries_asked = (server->max_xmit - 100) / SMB_DIRINFO_SIZE;
+
+ DPRINTK("SMB call readdir %d @ %d\n", cache_size, fpos);
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ retry:
+ first = 1;
+ total_count = 0;
+ current_entry = entry;
+
+ while (1)
+ {
+ if (first == 1)
+ {
+ p = smb_setup_header(server, SMBsearch, 2, 0);
+ WSET(buf, smb_vwv0, entries_asked);
+ WSET(buf, smb_vwv1, aDIR);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), "*.*", 3);
+ *p++ = 5;
+ WSET(p, 0, 0);
+ p += 2;
+ } else
+ {
+ p = smb_setup_header(server, SMBsearch, 2, 0);
+ WSET(buf, smb_vwv0, entries_asked);
+ WSET(buf, smb_vwv1, aDIR);
+ p = smb_encode_ascii(p, "", 0);
+ *p++ = 5;
+ WSET(p, 0, SMB_STATUS_SIZE);
+ p += 2;
+ memcpy(p, status, SMB_STATUS_SIZE);
+ p += SMB_STATUS_SIZE;
+ }
+
+ smb_setup_bcc(server, p);
+
+ if ((error = smb_request_ok(server, SMBsearch, 1, -1)) < 0)
+ {
+ if ((server->rcls == ERRDOS)
+ && (server->err == ERRnofiles))
+ {
+ result = total_count - fpos;
+ goto unlock_return;
+ } else
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ result = error;
+ goto unlock_return;
+ }
+ }
+ p = SMB_VWV(server->packet);
+ p = smb_decode_word(p, &count);
+ p = smb_decode_word(p, &bcc);
+
+ first = 0;
+
+ if (count <= 0)
+ {
+ result = total_count - fpos;
+ goto unlock_return;
+ }
+ if (bcc != count * SMB_DIRINFO_SIZE + 3)
+ {
+ result = -EIO;
+ goto unlock_return;
+ }
+ p += 3; /* Skipping VBLOCK header
+ (5, length lo, length hi). */
+
+ /* Read the last entry into the status field. */
+ memcpy(status,
+ SMB_BUF(server->packet) + 3 +
+ (count - 1) * SMB_DIRINFO_SIZE,
+ SMB_STATUS_SIZE);
+
+ /* Now we are ready to parse smb directory entries. */
+
+ for (i = 0; i < count; i++)
+ {
+ if (total_count < fpos)
+ {
+ p += SMB_DIRINFO_SIZE;
+ DDPRINTK("smb_proc_readdir: skipped entry.\n");
+ DDPRINTK(" total_count = %d\n"
+ " i = %d, fpos = %d\n",
+ total_count, i, fpos);
+ } else if (total_count >= fpos + cache_size)
+ {
+ result = total_count - fpos;
+ goto unlock_return;
+ } else
+ {
+ p = smb_decode_dirent(server, p,
+ current_entry);
+ current_entry->f_pos = total_count;
+ DDPRINTK("smb_proc_readdir: entry->f_pos = "
+ "%lu\n", entry->f_pos);
+ current_entry += 1;
+ }
+ total_count += 1;
+ }
+ }
+ unlock_return:
+ smb_unlock_server(server);
+ return result;
+}
+
+/* interpret a long filename structure - this is mostly guesses at the
+ moment. The length of the structure is returned. The structure of
+ a long filename depends on the info level. 260 is used by NT and 2
+ is used by OS/2. */
+
+static char *
+smb_decode_long_dirent(struct smb_server *server, char *p,
+ struct smb_dirent *entry, int level)
+{
+ char *result;
+
+ smb_init_dirent(server, entry);
+
+ switch (level)
+ {
+ /* We might add more levels later... */
+ case 1:
+ entry->len = BVAL(p, 26);
+ strncpy(entry->name, p + 27, entry->len);
+ entry->name[entry->len] = '\0';
+ entry->f_size = DVAL(p, 16);
+ entry->attr = BVAL(p, 24);
+
+ entry->f_ctime = date_dos2unix(WVAL(p, 6), WVAL(p, 4));
+ entry->f_atime = date_dos2unix(WVAL(p, 10), WVAL(p, 8));
+ entry->f_mtime = date_dos2unix(WVAL(p, 14), WVAL(p, 12));
+ result = p + 28 + BVAL(p, 26);
+ break;
+
+ default:
+ DPRINTK("Unknown long filename format %d\n", level);
+ result = p + WVAL(p, 0);
+ }
+
+ switch (server->case_handling)
+ {
+ case CASE_UPPER:
+ str_upper(entry->name);
+ break;
+ case CASE_LOWER:
+ str_lower(entry->name);
+ break;
+ default:
+ break;
+ }
+
+ smb_finish_dirent(server, entry);
+ return result;
+}
+
+int
+smb_proc_readdir_long(struct smb_server *server, struct inode *dir, int fpos,
+ int cache_size, struct smb_dirent *cache)
+{
+ /* NT uses 260, OS/2 uses 2. Both accept 1. */
+ const int info_level = 1;
+ const int max_matches = 512;
+
+ char *p;
+ char *lastname;
+ int lastname_len;
+ int i;
+ int first, entries, entries_seen;
+
+ unsigned char *resp_data = NULL;
+ unsigned char *resp_param = NULL;
+ int resp_data_len = 0;
+ int resp_param_len = 0;
+
+ __u16 command;
+
+ int result;
+
+ int ff_resume_key = 0;
+ int ff_searchcount = 0;
+ int ff_eos = 0;
+ int ff_lastname = 0;
+ int ff_dir_handle = 0;
+ int loop_count = 0;
+
+ char param[SMB_MAXPATHLEN + 2 + 12];
+ int mask_len;
+ unsigned char *mask = &(param[12]);
+
+ mask_len = smb_encode_path(server, mask,
+ SMB_INOP(dir), "*", 1) - mask;
+
+ mask[mask_len] = 0;
+ mask[mask_len + 1] = 0;
+
+ DPRINTK("smb_readdir_long cache=%d, fpos=%d, mask=%s\n",
+ cache_size, fpos, mask);
+
+ smb_lock_server(server);
+
+ retry:
+
+ first = 1;
+ entries = 0;
+ entries_seen = 2;
+
+ while (ff_eos == 0)
+ {
+ loop_count += 1;
+ if (loop_count > 200)
+ {
+ printk("smb_proc_readdir_long: "
+ "Looping in FIND_NEXT??\n");
+ break;
+ }
+ if (first != 0)
+ {
+ command = TRANSACT2_FINDFIRST;
+ WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
+ WSET(param, 2, max_matches); /* max count */
+ WSET(param, 4, 8 + 4 + 2); /* resume required +
+ close on end +
+ continue */
+ WSET(param, 6, info_level);
+ DSET(param, 8, 0);
+ } else
+ {
+ command = TRANSACT2_FINDNEXT;
+ DPRINTK("hand=0x%X resume=%d ff_lastname=%d mask=%s\n",
+ ff_dir_handle, ff_resume_key, ff_lastname, mask);
+ WSET(param, 0, ff_dir_handle);
+ WSET(param, 2, max_matches); /* max count */
+ WSET(param, 4, info_level);
+ DSET(param, 6, ff_resume_key); /* ff_resume_key */
+ WSET(param, 10, 8 + 4 + 2); /* resume required +
+ close on end +
+ continue */
+#ifdef CONFIG_SMB_WIN95
+ /* Windows 95 is not able to deliver answers
+ to FIND_NEXT fast enough, so sleep 0.2 seconds */
+ current->timeout = jiffies + HZ / 5;
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ current->timeout = 0;
+#endif
+ }
+
+ result = smb_trans2_request(server, command,
+ 0, NULL, 12 + mask_len + 2, param,
+ &resp_data_len, &resp_data,
+ &resp_param_len, &resp_param);
+
+ if (result < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ DPRINTK("smb_proc_readdir_long: "
+ "got error from trans2_request\n");
+ break;
+ }
+ if (server->rcls != 0)
+ {
+ result = -EIO;
+ break;
+ }
+ /* parse out some important return info */
+ if (first != 0)
+ {
+ ff_dir_handle = WVAL(resp_param, 0);
+ ff_searchcount = WVAL(resp_param, 2);
+ ff_eos = WVAL(resp_param, 4);
+ ff_lastname = WVAL(resp_param, 8);
+ } else
+ {
+ ff_searchcount = WVAL(resp_param, 0);
+ ff_eos = WVAL(resp_param, 2);
+ ff_lastname = WVAL(resp_param, 6);
+ }
+
+ if (ff_searchcount == 0)
+ {
+ break;
+ }
+ /* point to the data bytes */
+ p = resp_data;
+
+ /* we might need the lastname for continuations */
+ lastname = "";
+ lastname_len = 0;
+ if (ff_lastname > 0)
+ {
+ switch (info_level)
+ {
+ case 260:
+ lastname = p + ff_lastname;
+ lastname_len = resp_data_len - ff_lastname;
+ ff_resume_key = 0;
+ break;
+ case 1:
+ lastname = p + ff_lastname + 1;
+ lastname_len = BVAL(p, ff_lastname);
+ ff_resume_key = 0;
+ break;
+ }
+ }
+ lastname_len = min(lastname_len, 256);
+ strncpy(mask, lastname, lastname_len);
+ mask[lastname_len] = '\0';
+
+ /* Now we are ready to parse smb directory entries. */
+
+ for (i = 0; i < ff_searchcount; i++)
+ {
+ struct smb_dirent *entry = &(cache[entries]);
+
+ p = smb_decode_long_dirent(server, p,
+ entry, info_level);
+
+ DDPRINTK("smb_readdir_long: got %s\n", entry->name);
+
+ if ((entry->name[0] == '.')
+ && ((entry->name[1] == '\0')
+ || ((entry->name[1] == '.')
+ && (entry->name[2] == '\0'))))
+ {
+ /* ignore . and .. from the server */
+ continue;
+ }
+ if (entries_seen >= fpos)
+ {
+ entry->f_pos = entries_seen;
+ entries += 1;
+ }
+ if (entries >= cache_size)
+ {
+ goto finished;
+ }
+ entries_seen += 1;
+ }
+
+ DPRINTK("received %d entries (eos=%d resume=%d)\n",
+ ff_searchcount, ff_eos, ff_resume_key);
+
+ first = 0;
+ }
+
+ finished:
+ smb_unlock_server(server);
+ return entries;
+}
+
+int
+smb_proc_readdir(struct smb_server *server, struct inode *dir, int fpos,
+ int cache_size, struct smb_dirent *entry)
+{
+ if (server->protocol >= PROTOCOL_LANMAN2)
+ return smb_proc_readdir_long(server, dir, fpos, cache_size,
+ entry);
+ else
+ return smb_proc_readdir_short(server, dir, fpos, cache_size,
+ entry);
+}
+
+static int
+smb_proc_getattr_core(struct inode *dir, const char *name, int len,
+ struct smb_dirent *entry)
+{
+ int result;
+ char *p;
+ struct smb_server *server = SMB_SERVER(dir);
+ char *buf;
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ DDPRINTK("smb_proc_getattr: %s\n", name);
+
+ retry:
+ p = smb_setup_header(server, SMBgetatr, 0, 0);
+ *p++ = 4;
+ p = smb_encode_path(server, p, SMB_INOP(dir), name, len);
+ smb_setup_bcc(server, p);
+
+ if ((result = smb_request_ok(server, SMBgetatr, 10, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ smb_unlock_server(server);
+ return result;
+ }
+ entry->attr = WVAL(buf, smb_vwv0);
+ entry->f_ctime = entry->f_atime =
+ entry->f_mtime = local2utc(DVAL(buf, smb_vwv1));
+
+ entry->f_size = DVAL(buf, smb_vwv3);
+ smb_unlock_server(server);
+ return 0;
+}
+
+static int
+smb_proc_getattr_trans2(struct inode *dir, const char *name, int len,
+ struct smb_dirent *entry)
+{
+ struct smb_server *server = SMB_SERVER(dir);
+ char param[SMB_MAXPATHLEN + 20];
+ char *p;
+ int result;
+
+ unsigned char *resp_data = NULL;
+ unsigned char *resp_param = NULL;
+ int resp_data_len = 0;
+ int resp_param_len = 0;
+
+ WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
+ DSET(param, 2, 0);
+ p = smb_encode_path(server, param + 6, SMB_INOP(dir), name, len);
+
+ smb_lock_server(server);
+ retry:
+ result = smb_trans2_request(server, TRANSACT2_QPATHINFO,
+ 0, NULL, p - param, param,
+ &resp_data_len, &resp_data,
+ &resp_param_len, &resp_param);
+
+ if (server->rcls != 0)
+ {
+ smb_unlock_server(server);
+ return -smb_errno(server->rcls, server->err);
+ }
+ if (result < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ smb_unlock_server(server);
+ return result;
+ }
+ if (resp_data_len < 22)
+ {
+ smb_unlock_server(server);
+ return -ENOENT;
+ }
+ entry->f_ctime = date_dos2unix(WVAL(resp_data, 2),
+ WVAL(resp_data, 0));
+ entry->f_atime = date_dos2unix(WVAL(resp_data, 6),
+ WVAL(resp_data, 4));
+ entry->f_mtime = date_dos2unix(WVAL(resp_data, 10),
+ WVAL(resp_data, 8));
+ entry->f_size = DVAL(resp_data, 12);
+ entry->attr = WVAL(resp_data, 20);
+ smb_unlock_server(server);
+
+ return 0;
+}
+
+int
+smb_proc_getattr(struct inode *dir, const char *name, int len,
+ struct smb_dirent *entry)
+{
+ struct smb_server *server = SMB_SERVER(dir);
+ int result = 0;
+
+ smb_init_dirent(server, entry);
+
+ if (server->protocol >= PROTOCOL_LANMAN2)
+ {
+ result = smb_proc_getattr_trans2(dir, name, len, entry);
+ }
+ if ((server->protocol < PROTOCOL_LANMAN2) || (result < 0))
+ {
+ result = smb_proc_getattr_core(dir, name, len, entry);
+ }
+ smb_finish_dirent(server, entry);
+
+ entry->len = len;
+ memcpy(entry->name, name, len);
+ /* entry->name is null terminated from smb_init_dirent */
+
+ return result;
+}
+
+
+/* In core protocol, there is only 1 time to be set, we use
+ entry->f_mtime, to make touch work. */
+static int
+smb_proc_setattr_core(struct smb_server *server,
+ struct inode *i, struct smb_dirent *new_finfo)
+{
+ char *p;
+ char *buf;
+ int result;
+
+ smb_lock_server(server);
+ buf = server->packet;
+
+ retry:
+ p = smb_setup_header(server, SMBsetatr, 8, 0);
+ WSET(buf, smb_vwv0, new_finfo->attr);
+ DSET(buf, smb_vwv1, utc2local(new_finfo->f_mtime));
+ *p++ = 4;
+ p = smb_encode_path(server, p,
+ SMB_INOP(i)->dir, SMB_INOP(i)->finfo.name,
+ SMB_INOP(i)->finfo.len);
+ p = smb_encode_ascii(p, "", 0);
+
+ smb_setup_bcc(server, p);
+ if ((result = smb_request_ok(server, SMBsetatr, 0, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+static int
+smb_proc_setattr_trans2(struct smb_server *server,
+ struct inode *i, struct smb_dirent *new_finfo)
+{
+ char param[SMB_MAXPATHLEN + 20];
+ char data[26];
+ char *p;
+ int result;
+
+ unsigned char *resp_data = NULL;
+ unsigned char *resp_param = NULL;
+ int resp_data_len = 0;
+ int resp_param_len = 0;
+
+ WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
+ DSET(param, 2, 0);
+ p = smb_encode_path(server, param + 6,
+ SMB_INOP(i)->dir, SMB_INOP(i)->finfo.name,
+ SMB_INOP(i)->finfo.len);
+
+ date_unix2dos(new_finfo->f_ctime, &(data[0]), &(data[2]));
+ date_unix2dos(new_finfo->f_atime, &(data[4]), &(data[6]));
+ date_unix2dos(new_finfo->f_mtime, &(data[8]), &(data[10]));
+ DSET(data, 12, new_finfo->f_size);
+ DSET(data, 16, new_finfo->f_blksize);
+ WSET(data, 20, new_finfo->attr);
+ WSET(data, 22, 0);
+
+ smb_lock_server(server);
+ retry:
+ result = smb_trans2_request(server, TRANSACT2_SETPATHINFO,
+ 26, data, p - param, param,
+ &resp_data_len, &resp_data,
+ &resp_param_len, &resp_param);
+
+ if (server->rcls != 0)
+ {
+ smb_unlock_server(server);
+ return -smb_errno(server->rcls, server->err);
+ }
+ if (result < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ }
+ smb_unlock_server(server);
+ return 0;
+}
+
+int
+smb_proc_setattr(struct smb_server *server, struct inode *inode,
+ struct smb_dirent *new_finfo)
+{
+ int result;
+
+ if (server->protocol >= PROTOCOL_LANMAN2)
+ {
+ result = smb_proc_setattr_trans2(server, inode, new_finfo);
+ }
+ if ((server->protocol < PROTOCOL_LANMAN2) || (result < 0))
+ {
+ result = smb_proc_setattr_core(server, inode, new_finfo);
+ }
+ return result;
+}
+
+int
+smb_proc_dskattr(struct super_block *super, struct smb_dskattr *attr)
+{
+ int error;
+ char *p;
+ struct smb_server *server = &(SMB_SBP(super)->s_server);
+
+ smb_lock_server(server);
+
+ retry:
+ smb_setup_header(server, SMBdskattr, 0, 0);
+
+ if ((error = smb_request_ok(server, SMBdskattr, 5, 0)) < 0)
+ {
+ if (smb_retry(server))
+ {
+ goto retry;
+ }
+ smb_unlock_server(server);
+ return error;
+ }
+ p = SMB_VWV(server->packet);
+ p = smb_decode_word(p, &attr->total);
+ p = smb_decode_word(p, &attr->allocblocks);
+ p = smb_decode_word(p, &attr->blocksize);
+ p = smb_decode_word(p, &attr->free);
+ smb_unlock_server(server);
+ return 0;
+}
+
+/*****************************************************************************/
+/* */
+/* Mount/umount operations. */
+/* */
+/*****************************************************************************/
+
+struct smb_prots
+{
+ enum smb_protocol prot;
+ const char *name;
+};
+
+/* smb_proc_reconnect: We expect the server to be locked, so that you
+ can call the routine from within smb_retry. The socket must be
+ created, like after a user-level socket()-call. It may not be
+ connected. */
+
+int
+smb_proc_reconnect(struct smb_server *server)
+{
+ struct smb_prots prots[] =
+ {
+ {PROTOCOL_CORE, "PC NETWORK PROGRAM 1.0"},
+ {PROTOCOL_COREPLUS, "MICROSOFT NETWORKS 1.03"},
+#ifdef LANMAN1
+ {PROTOCOL_LANMAN1, "MICROSOFT NETWORKS 3.0"},
+ {PROTOCOL_LANMAN1, "LANMAN1.0"},
+#endif
+#ifdef LANMAN2
+ {PROTOCOL_LANMAN2, "LM1.2X002"},
+#endif
+#ifdef NT1
+ {PROTOCOL_NT1, "NT LM 0.12"},
+ {PROTOCOL_NT1, "NT LANMAN 1.0"},
+#endif
+ {-1, NULL}};
+ char dev[] = "A:";
+ int i, plength;
+ int max_xmit = 1024; /* Space needed for first request. */
+ int given_max_xmit = server->m.max_xmit;
+ int result;
+ byte *p;
+
+ if ((result = smb_connect(server)) < 0)
+ {
+ DPRINTK("smb_proc_reconnect: could not smb_connect\n");
+ goto fail;
+ }
+ /* Here we assume that the connection is valid */
+ server->state = CONN_VALID;
+
+ if (server->packet != NULL)
+ {
+ smb_vfree(server->packet);
+ server->packet_size = 0;
+ }
+ server->packet = smb_vmalloc(max_xmit);
+
+ if (server->packet == NULL)
+ {
+ printk("smb_proc_connect: No memory! Bailing out.\n");
+ result = -ENOMEM;
+ goto fail;
+ }
+ server->packet_size = server->max_xmit = max_xmit;
+
+ /*
+ * Start with an RFC1002 session request packet.
+ */
+ p = server->packet + 4;
+
+ p = smb_name_mangle(p, server->m.server_name);
+ p = smb_name_mangle(p, server->m.client_name);
+
+ smb_encode_smb_length(server->packet,
+ (void *) p - (void *) (server->packet));
+
+ server->packet[0] = 0x81; /* SESSION REQUEST */
+
+ if (smb_catch_keepalive(server) < 0)
+ {
+ printk("smb_proc_connect: could not catch_keepalives\n");
+ }
+ if ((result = smb_request(server)) < 0)
+ {
+ DPRINTK("smb_proc_connect: Failed to send SESSION REQUEST.\n");
+ smb_dont_catch_keepalive(server);
+ goto fail;
+ }
+ if (server->packet[0] != 0x82)
+ {
+ printk("smb_proc_connect: Did not receive positive response "
+ "(err = %x)\n",
+ server->packet[0]);
+ smb_dont_catch_keepalive(server);
+ result = -EIO;
+ goto fail;
+ }
+ DPRINTK("smb_proc_connect: Passed SESSION REQUEST.\n");
+
+ /* Now we are ready to send a SMB Negotiate Protocol packet. */
+ memset(server->packet, 0, SMB_HEADER_LEN);
+
+ plength = 0;
+ for (i = 0; prots[i].name != NULL; i++)
+ {
+ plength += strlen(prots[i].name) + 2;
+ }
+
+ smb_setup_header(server, SMBnegprot, 0, plength);
+
+ p = SMB_BUF(server->packet);
+
+ for (i = 0; prots[i].name != NULL; i++)
+ {
+ *p++ = 2;
+ strcpy(p, prots[i].name);
+ p += strlen(prots[i].name) + 1;
+ }
+
+ if ((result = smb_request_ok(server, SMBnegprot, 1, -1)) < 0)
+ {
+ DPRINTK("smb_proc_connect: Failure requesting SMBnegprot\n");
+ smb_dont_catch_keepalive(server);
+ goto fail;
+ } else
+ {
+ DDPRINTK("smb_proc_connect: Request SMBnegprot..");
+ }
+
+ DDPRINTK("Verified!\n");
+
+ p = SMB_VWV(server->packet);
+ p = smb_decode_word(p, (word *) & i);
+ server->protocol = prots[i].prot;
+
+ DPRINTK("smb_proc_connect: Server wants %s protocol.\n",
+ prots[i].name);
+
+ if (server->protocol >= PROTOCOL_LANMAN1)
+ {
+
+ word passlen = strlen(server->m.password);
+ word userlen = strlen(server->m.username);
+
+ DPRINTK("smb_proc_connect: password = %s\n",
+ server->m.password);
+ DPRINTK("smb_proc_connect: usernam = %s\n",
+ server->m.username);
+ DPRINTK("smb_proc_connect: blkmode = %d\n",
+ WVAL(server->packet, smb_vwv5));
+
+ if (server->protocol >= PROTOCOL_NT1)
+ {
+ server->max_xmit = DVAL(server->packet, smb_vwv3 + 1);
+ server->maxmux = WVAL(server->packet, smb_vwv1 + 1);
+ server->maxvcs = WVAL(server->packet, smb_vwv2 + 1);
+ server->blkmode = DVAL(server->packet, smb_vwv9 + 1);
+ server->sesskey = DVAL(server->packet, smb_vwv7 + 1);
+ } else
+ {
+ server->max_xmit = WVAL(server->packet, smb_vwv2);
+ server->maxmux = WVAL(server->packet, smb_vwv3);
+ server->maxvcs = WVAL(server->packet, smb_vwv4);
+ server->blkmode = WVAL(server->packet, smb_vwv5);
+ server->sesskey = DVAL(server->packet, smb_vwv6);
+ }
+
+ if (server->max_xmit < given_max_xmit)
+ {
+ /* We do not distinguish between the client
+ requests and the server response. */
+ given_max_xmit = server->max_xmit;
+ }
+ if (server->protocol >= PROTOCOL_NT1)
+ {
+ char *workgroup = server->m.domain;
+ char *OS_id = "Unix";
+ char *client_id = "ksmbfs";
+
+ smb_setup_header(server, SMBsesssetupX, 13,
+ 5 + userlen + passlen +
+ strlen(workgroup) + strlen(OS_id) +
+ strlen(client_id));
+
+ WSET(server->packet, smb_vwv0, 0x00ff);
+ WSET(server->packet, smb_vwv1, 0);
+ WSET(server->packet, smb_vwv2, given_max_xmit);
+ WSET(server->packet, smb_vwv3, 2);
+ WSET(server->packet, smb_vwv4, server->pid);
+ DSET(server->packet, smb_vwv5, server->sesskey);
+ WSET(server->packet, smb_vwv7, passlen + 1);
+ WSET(server->packet, smb_vwv8, 0);
+ WSET(server->packet, smb_vwv9, 0);
+
+ p = SMB_BUF(server->packet);
+ strcpy(p, server->m.password);
+ p += passlen + 1;
+ strcpy(p, server->m.username);
+ p += userlen + 1;
+ strcpy(p, workgroup);
+ p += strlen(p) + 1;
+ strcpy(p, OS_id);
+ p += strlen(p) + 1;
+ strcpy(p, client_id);
+ } else
+ {
+ smb_setup_header(server, SMBsesssetupX, 10,
+ 2 + userlen + passlen);
+
+ WSET(server->packet, smb_vwv0, 0x00ff);
+ WSET(server->packet, smb_vwv1, 0);
+ WSET(server->packet, smb_vwv2, given_max_xmit);
+ WSET(server->packet, smb_vwv3, 2);
+ WSET(server->packet, smb_vwv4, server->pid);
+ DSET(server->packet, smb_vwv5, server->sesskey);
+ WSET(server->packet, smb_vwv7, passlen + 1);
+ WSET(server->packet, smb_vwv8, 0);
+ WSET(server->packet, smb_vwv9, 0);
+
+ p = SMB_BUF(server->packet);
+ strcpy(p, server->m.password);
+ p += passlen + 1;
+ strcpy(p, server->m.username);
+ }
+
+ if ((result = smb_request_ok(server, SMBsesssetupX, 3, 0)) < 0)
+ {
+ DPRINTK("smb_proc_connect: SMBsessetupX failed\n");
+ smb_dont_catch_keepalive(server);
+ goto fail;
+ }
+ smb_decode_word(server->packet + 32, &(server->server_uid));
+ } else
+ {
+ server->max_xmit = 0;
+ server->maxmux = 0;
+ server->maxvcs = 0;
+ server->blkmode = 0;
+ server->sesskey = 0;
+ }
+
+ /* Fine! We have a connection, send a tcon message. */
+
+ smb_setup_header(server, SMBtcon, 0,
+ 6 + strlen(server->m.service) +
+ strlen(server->m.password) + strlen(dev));
+
+ p = SMB_BUF(server->packet);
+ p = smb_encode_ascii(p, server->m.service, strlen(server->m.service));
+ p = smb_encode_ascii(p, server->m.password, strlen(server->m.password));
+ p = smb_encode_ascii(p, dev, strlen(dev));
+
+ if ((result = smb_request_ok(server, SMBtcon, 2, 0)) < 0)
+ {
+ DPRINTK("smb_proc_connect: SMBtcon not verified.\n");
+ smb_dont_catch_keepalive(server);
+ goto fail;
+ }
+ DDPRINTK("OK! Managed to set up SMBtcon!\n");
+
+ p = SMB_VWV(server->packet);
+
+ if (server->protocol <= PROTOCOL_COREPLUS)
+ {
+ word max_xmit;
+
+ p = smb_decode_word(p, &max_xmit);
+ server->max_xmit = max_xmit;
+
+ if (server->max_xmit > given_max_xmit)
+ {
+ server->max_xmit = given_max_xmit;
+ }
+ } else
+ {
+ p += 2;
+ }
+
+ p = smb_decode_word(p, &server->tid);
+
+ /* Ok, everything is fine. max_xmit does not include */
+ /* the TCP-SMB header of 4 bytes. */
+ server->max_xmit += 4;
+
+ DPRINTK("max_xmit = %d, tid = %d\n", server->max_xmit, server->tid);
+
+ /* Now make a new packet with the correct size. */
+ smb_vfree(server->packet);
+
+ server->packet = smb_vmalloc(server->max_xmit);
+ if (server->packet == NULL)
+ {
+ printk("smb_proc_connect: No memory left in end of "
+ "connection phase :-(\n");
+ smb_dont_catch_keepalive(server);
+ goto fail;
+ }
+ server->packet_size = server->max_xmit;
+
+ DPRINTK("smb_proc_connect: Normal exit\n");
+ return 0;
+
+ fail:
+ server->state = CONN_INVALID;
+ return result;
+}
+
+/* smb_proc_reconnect: server->packet is allocated with
+ server->max_xmit bytes if and only if we return >= 0 */
+int
+smb_proc_connect(struct smb_server *server)
+{
+ int result;
+ smb_lock_server(server);
+
+ result = smb_proc_reconnect(server);
+
+ if ((result < 0) && (server->packet != NULL))
+ {
+ smb_vfree(server->packet);
+ server->packet = NULL;
+ }
+ smb_unlock_server(server);
+ return result;
+}
+
+int
+smb_proc_disconnect(struct smb_server *server)
+{
+ smb_setup_header_exclusive(server, SMBtdis, 0, 0);
+ return smb_request_ok_unlock(server, SMBtdis, 0, 0);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 15:34:54 +0000