diff options
author | Arnd Bergmann <arnd@arndb.de> | 2010-10-04 22:55:57 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-05 09:08:21 -0700 |
commit | 2116b7a473bf1c8d26998b477c294e7fe294921f (patch) | |
tree | 5f06aca6b425916f763d83fa4516bca51c8f9a60 /fs/smbfs/proc.c | |
parent | 5af74aa5e97fcc0cc3955bc2a7ff6f3a13fa41cb (diff) | |
download | op-kernel-dev-2116b7a473bf1c8d26998b477c294e7fe294921f.zip op-kernel-dev-2116b7a473bf1c8d26998b477c294e7fe294921f.tar.gz |
smbfs: move to drivers/staging
smbfs has been scheduled for removal in 2.6.27, so
maybe we can now move it to drivers/staging on the
way out.
smbfs still uses the big kernel lock and nobody
is going to fix that, so we should be getting
rid of it soon.
This removes the 32 bit compat mount and ioctl
handling code, which is implemented in common fs
code, and moves all smbfs related files into
drivers/staging/smbfs.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/smbfs/proc.c')
-rw-r--r-- | fs/smbfs/proc.c | 3507 |
1 files changed, 0 insertions, 3507 deletions
diff --git a/fs/smbfs/proc.c b/fs/smbfs/proc.c deleted file mode 100644 index 71c29b6..0000000 --- a/fs/smbfs/proc.c +++ /dev/null @@ -1,3507 +0,0 @@ -/* - * proc.c - * - * Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke - * Copyright (C) 1997 by Volker Lendecke - * - * Please add a note about your changes to smbfs in the ChangeLog file. - */ - -#include <linux/types.h> -#include <linux/capability.h> -#include <linux/errno.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/stat.h> -#include <linux/fcntl.h> -#include <linux/dcache.h> -#include <linux/nls.h> -#include <linux/smp_lock.h> -#include <linux/net.h> -#include <linux/vfs.h> -#include <linux/smb_fs.h> -#include <linux/smbno.h> -#include <linux/smb_mount.h> - -#include <net/sock.h> - -#include <asm/string.h> -#include <asm/div64.h> - -#include "smb_debug.h" -#include "proto.h" -#include "request.h" - - -/* Features. Undefine if they cause problems, this should perhaps be a - config option. */ -#define SMBFS_POSIX_UNLINK 1 - -/* Allow smb_retry to be interrupted. */ -#define SMB_RETRY_INTR - -#define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN) -#define SMB_CMD(packet) (*(packet+8)) -#define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1)) - -#define SMB_DIRINFO_SIZE 43 -#define SMB_STATUS_SIZE 21 - -#define SMB_ST_BLKSIZE (PAGE_SIZE) -#define SMB_ST_BLKSHIFT (PAGE_SHIFT) - -static struct smb_ops smb_ops_core; -static struct smb_ops smb_ops_os2; -static struct smb_ops smb_ops_win95; -static struct smb_ops smb_ops_winNT; -static struct smb_ops smb_ops_unix; -static struct smb_ops smb_ops_null; - -static void -smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr); -static void -smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr); -static int -smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *fattr); -static int -smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry, - struct smb_fattr *fattr); -static int -smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry, - u16 attr); -static int -smb_proc_setattr_ext(struct smb_sb_info *server, - struct inode *inode, struct smb_fattr *fattr); -static int -smb_proc_query_cifsunix(struct smb_sb_info *server); -static void -install_ops(struct smb_ops *dst, struct smb_ops *src); - - -static void -str_upper(char *name, int len) -{ - while (len--) - { - if (*name >= 'a' && *name <= 'z') - *name -= ('a' - 'A'); - name++; - } -} - -#if 0 -static void -str_lower(char *name, int len) -{ - while (len--) - { - if (*name >= 'A' && *name <= 'Z') - *name += ('a' - 'A'); - name++; - } -} -#endif - -/* reverse a string inline. This is used by the dircache walking routines */ -static void reverse_string(char *buf, int len) -{ - char c; - char *end = buf+len-1; - - while(buf < end) { - c = *buf; - *(buf++) = *end; - *(end--) = c; - } -} - -/* no conversion, just a wrapper for memcpy. */ -static int convert_memcpy(unsigned char *output, int olen, - const unsigned char *input, int ilen, - struct nls_table *nls_from, - struct nls_table *nls_to) -{ - if (olen < ilen) - return -ENAMETOOLONG; - memcpy(output, input, ilen); - return ilen; -} - -static inline int write_char(unsigned char ch, char *output, int olen) -{ - if (olen < 4) - return -ENAMETOOLONG; - sprintf(output, ":x%02x", ch); - return 4; -} - -static inline int write_unichar(wchar_t ch, char *output, int olen) -{ - if (olen < 5) - return -ENAMETOOLONG; - sprintf(output, ":%04x", ch); - return 5; -} - -/* convert from one "codepage" to another (possibly being utf8). */ -static int convert_cp(unsigned char *output, int olen, - const unsigned char *input, int ilen, - struct nls_table *nls_from, - struct nls_table *nls_to) -{ - int len = 0; - int n; - wchar_t ch; - - while (ilen > 0) { - /* convert by changing to unicode and back to the new cp */ - n = nls_from->char2uni(input, ilen, &ch); - if (n == -EINVAL) { - ilen--; - n = write_char(*input++, output, olen); - if (n < 0) - goto fail; - output += n; - olen -= n; - len += n; - continue; - } else if (n < 0) - goto fail; - input += n; - ilen -= n; - - n = nls_to->uni2char(ch, output, olen); - if (n == -EINVAL) - n = write_unichar(ch, output, olen); - if (n < 0) - goto fail; - output += n; - olen -= n; - - len += n; - } - return len; -fail: - return n; -} - -/* ----------------------------------------------------------- */ - -/* - * nls_unicode - * - * This encodes/decodes little endian unicode format - */ - -static int uni2char(wchar_t uni, unsigned char *out, int boundlen) -{ - if (boundlen < 2) - return -EINVAL; - *out++ = uni & 0xff; - *out++ = uni >> 8; - return 2; -} - -static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni) -{ - if (boundlen < 2) - return -EINVAL; - *uni = (rawstring[1] << 8) | rawstring[0]; - return 2; -} - -static struct nls_table unicode_table = { - .charset = "unicode", - .uni2char = uni2char, - .char2uni = char2uni, -}; - -/* ----------------------------------------------------------- */ - -static int setcodepage(struct nls_table **p, char *name) -{ - struct nls_table *nls; - - if (!name || !*name) { - nls = NULL; - } else if ( (nls = load_nls(name)) == NULL) { - printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name); - return -EINVAL; - } - - /* if already set, unload the previous one. */ - if (*p && *p != &unicode_table) - unload_nls(*p); - *p = nls; - - return 0; -} - -/* Handles all changes to codepage settings. */ -int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp) -{ - int n = 0; - - smb_lock_server(server); - - /* Don't load any nls_* at all, if no remote is requested */ - if (!*cp->remote_name) - goto out; - - /* local */ - n = setcodepage(&server->local_nls, cp->local_name); - if (n != 0) - goto out; - - /* remote */ - if (!strcmp(cp->remote_name, "unicode")) { - server->remote_nls = &unicode_table; - } else { - n = setcodepage(&server->remote_nls, cp->remote_name); - if (n != 0) - setcodepage(&server->local_nls, NULL); - } - -out: - if (server->local_nls != NULL && server->remote_nls != NULL) - server->ops->convert = convert_cp; - else - server->ops->convert = convert_memcpy; - - smb_unlock_server(server); - return n; -} - - -/*****************************************************************************/ -/* */ -/* Encoding/Decoding section */ -/* */ -/*****************************************************************************/ - -static __u8 * -smb_encode_smb_length(__u8 * p, __u32 len) -{ - *p = 0; - *(p+1) = 0; - *(p+2) = (len & 0xFF00) >> 8; - *(p+3) = (len & 0xFF); - if (len > 0xFFFF) - { - *(p+1) = 1; - } - return p + 4; -} - -/* - * smb_build_path: build the path to entry and name storing it in buf. - * The path returned will have the trailing '\0'. - */ -static int smb_build_path(struct smb_sb_info *server, unsigned char *buf, - int maxlen, - struct dentry *entry, struct qstr *name) -{ - unsigned char *path = buf; - int len; - int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0; - - if (maxlen < (2<<unicode)) - return -ENAMETOOLONG; - - if (maxlen > SMB_MAXPATHLEN + 1) - maxlen = SMB_MAXPATHLEN + 1; - - if (entry == NULL) - goto test_name_and_out; - - /* - * If IS_ROOT, we have to do no walking at all. - */ - if (IS_ROOT(entry) && !name) { - *path++ = '\\'; - if (unicode) *path++ = '\0'; - *path++ = '\0'; - if (unicode) *path++ = '\0'; - return path-buf; - } - - /* - * Build the path string walking the tree backward from end to ROOT - * and store it in reversed order [see reverse_string()] - */ - dget(entry); - spin_lock(&entry->d_lock); - while (!IS_ROOT(entry)) { - struct dentry *parent; - - if (maxlen < (3<<unicode)) { - spin_unlock(&entry->d_lock); - dput(entry); - return -ENAMETOOLONG; - } - - len = server->ops->convert(path, maxlen-2, - entry->d_name.name, entry->d_name.len, - server->local_nls, server->remote_nls); - if (len < 0) { - spin_unlock(&entry->d_lock); - dput(entry); - return len; - } - reverse_string(path, len); - path += len; - if (unicode) { - /* Note: reverse order */ - *path++ = '\0'; - maxlen--; - } - *path++ = '\\'; - maxlen -= len+1; - - parent = entry->d_parent; - dget(parent); - spin_unlock(&entry->d_lock); - dput(entry); - entry = parent; - spin_lock(&entry->d_lock); - } - spin_unlock(&entry->d_lock); - dput(entry); - reverse_string(buf, path-buf); - - /* maxlen has space for at least one char */ -test_name_and_out: - if (name) { - if (maxlen < (3<<unicode)) - return -ENAMETOOLONG; - *path++ = '\\'; - if (unicode) { - *path++ = '\0'; - maxlen--; - } - len = server->ops->convert(path, maxlen-2, - name->name, name->len, - server->local_nls, server->remote_nls); - if (len < 0) - return len; - path += len; - maxlen -= len+1; - } - /* maxlen has space for at least one char */ - *path++ = '\0'; - if (unicode) *path++ = '\0'; - return path-buf; -} - -static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen, - struct dentry *dir, struct qstr *name) -{ - int result; - - result = smb_build_path(server, buf, maxlen, dir, name); - if (result < 0) - goto out; - if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS) - str_upper(buf, result); -out: - return result; -} - -/* encode_path for non-trans2 request SMBs */ -static int smb_simple_encode_path(struct smb_request *req, char **p, - struct dentry * entry, struct qstr * name) -{ - struct smb_sb_info *server = req->rq_server; - char *s = *p; - int res; - int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s; - int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE); - - if (!maxlen) - return -ENAMETOOLONG; - *s++ = 4; /* ASCII data format */ - - /* - * SMB Unicode strings must be 16bit aligned relative the start of the - * packet. If they are not they must be padded with 0. - */ - if (unicode) { - int align = s - (char *)req->rq_buffer; - if (!(align & 1)) { - *s++ = '\0'; - maxlen--; - } - } - - res = smb_encode_path(server, s, maxlen-1, entry, name); - if (res < 0) - return res; - *p = s + res; - return 0; -} - -/* 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 */ - - -static time_t -utc2local(struct smb_sb_info *server, time_t time) -{ - return time - server->opt.serverzone*60; -} - -static time_t -local2utc(struct smb_sb_info *server, time_t time) -{ - return time + server->opt.serverzone*60; -} - -/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ - -static time_t -date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time) -{ - int month, year; - time_t secs; - - /* first subtract and mask after that... Otherwise, if - date == 0, bad things happen */ - month = ((date >> 5) - 1) & 15; - 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(server, secs); -} - - -/* Convert linear UNIX date to a MS-DOS time/date pair. */ - -static void -date_unix2dos(struct smb_sb_info *server, - int unix_date, __u16 *date, __u16 *time) -{ - int day, year, nl_day, month; - - unix_date = utc2local(server, unix_date); - if (unix_date < 315532800) - unix_date = 315532800; - - *time = (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 = 1; month < 12; month++) - if (day_n[month] > nl_day) - break; - } - *date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9); -} - -/* The following are taken from fs/ntfs/util.c */ - -#define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000) - -/* - * Convert the NT UTC (based 1601-01-01, in hundred nanosecond units) - * into Unix UTC (based 1970-01-01, in seconds). - */ -static struct timespec -smb_ntutc2unixutc(u64 ntutc) -{ - struct timespec ts; - /* FIXME: what about the timezone difference? */ - /* Subtract the NTFS time offset, then convert to 1s intervals. */ - u64 t = ntutc - NTFS_TIME_OFFSET; - ts.tv_nsec = do_div(t, 10000000) * 100; - ts.tv_sec = t; - return ts; -} - -/* Convert the Unix UTC into NT time */ -static u64 -smb_unixutc2ntutc(struct timespec ts) -{ - /* Note: timezone conversion is probably wrong. */ - /* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */ - return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET; -} - -#define MAX_FILE_MODE 6 -static mode_t file_mode[] = { - S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK -}; - -static int smb_filetype_to_mode(u32 filetype) -{ - if (filetype > MAX_FILE_MODE) { - PARANOIA("Filetype out of range: %d\n", filetype); - return S_IFREG; - } - return file_mode[filetype]; -} - -static u32 smb_filetype_from_mode(int mode) -{ - if (S_ISREG(mode)) - return UNIX_TYPE_FILE; - if (S_ISDIR(mode)) - return UNIX_TYPE_DIR; - if (S_ISLNK(mode)) - return UNIX_TYPE_SYMLINK; - if (S_ISCHR(mode)) - return UNIX_TYPE_CHARDEV; - if (S_ISBLK(mode)) - return UNIX_TYPE_BLKDEV; - if (S_ISFIFO(mode)) - return UNIX_TYPE_FIFO; - if (S_ISSOCK(mode)) - return UNIX_TYPE_SOCKET; - return UNIX_TYPE_UNKNOWN; -} - - -/*****************************************************************************/ -/* */ -/* Support section. */ -/* */ -/*****************************************************************************/ - -__u32 -smb_len(__u8 * p) -{ - return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3); -} - -static __u16 -smb_bcc(__u8 * packet) -{ - int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16); - return WVAL(packet, pos); -} - -/* smb_valid_packet: We check if packet fulfills the basic - requirements of a smb packet */ - -static int -smb_valid_packet(__u8 * 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(__u8 * packet, int command, int wct, int bcc) -{ - if (SMB_CMD(packet) != command) - goto bad_command; - if (SMB_WCT(packet) < wct) - goto bad_wct; - if (bcc != -1 && smb_bcc(packet) < bcc) - goto bad_bcc; - return 0; - -bad_command: - printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n", - command, SMB_CMD(packet)); - goto fail; -bad_wct: - printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n", - command, wct, SMB_WCT(packet)); - goto fail; -bad_bcc: - printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n", - command, bcc, smb_bcc(packet)); -fail: - return -EIO; -} - -/* - * Returns the maximum read or write size for the "payload". Making all of the - * packet fit within the negotiated max_xmit size. - * - * N.B. Since this value is usually computed before locking the server, - * the server's packet size must never be decreased! - */ -static inline int -smb_get_xmitsize(struct smb_sb_info *server, int overhead) -{ - return server->opt.max_xmit - overhead; -} - -/* - * Calculate the maximum read size - */ -int -smb_get_rsize(struct smb_sb_info *server) -{ - /* readX has 12 parameters, read has 5 */ - int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2; - int size = smb_get_xmitsize(server, overhead); - - VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size); - - return size; -} - -/* - * Calculate the maximum write size - */ -int -smb_get_wsize(struct smb_sb_info *server) -{ - /* writeX has 14 parameters, write has 5 */ - int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2; - int size = smb_get_xmitsize(server, overhead); - - VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size); - - return size; -} - -/* - * Convert SMB error codes to -E... errno values. - */ -int -smb_errno(struct smb_request *req) -{ - int errcls = req->rq_rcls; - int error = req->rq_err; - char *class = "Unknown"; - - VERBOSE("errcls %d code %d from command 0x%x\n", - errcls, error, SMB_CMD(req->rq_header)); - - if (errcls == ERRDOS) { - switch (error) { - case ERRbadfunc: - return -EINVAL; - case ERRbadfile: - 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: - 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 -ENOENT; - case ERRbadshare: - return -ETXTBSY; - case ERRlock: - return -EDEADLK; - case ERRfilexists: - return -EEXIST; - case ERROR_INVALID_PARAMETER: - return -EINVAL; - case ERROR_DISK_FULL: - return -ENOSPC; - case ERROR_INVALID_NAME: - return -ENOENT; - case ERROR_DIR_NOT_EMPTY: - return -ENOTEMPTY; - case ERROR_NOT_LOCKED: - return -ENOLCK; - case ERROR_ALREADY_EXISTS: - return -EEXIST; - default: - class = "ERRDOS"; - goto err_unknown; - } - } else if (errcls == ERRSRV) { - switch (error) { - /* N.B. This is wrong ... EIO ? */ - case ERRerror: - return -ENFILE; - case ERRbadpw: - return -EINVAL; - case ERRbadtype: - case ERRtimeout: - return -EIO; - case ERRaccess: - return -EACCES; - /* - * This is a fatal error, as it means the "tree ID" - * for this connection is no longer valid. We map - * to a special error code and get a new connection. - */ - case ERRinvnid: - return -EBADSLT; - default: - class = "ERRSRV"; - goto err_unknown; - } - } else if (errcls == ERRHRD) { - switch (error) { - case ERRnowrite: - return -EROFS; - case ERRbadunit: - return -ENODEV; - case ERRnotready: - return -EUCLEAN; - case ERRbadcmd: - case ERRdata: - return -EIO; - case ERRbadreq: - return -ERANGE; - case ERRbadshare: - return -ETXTBSY; - case ERRlock: - return -EDEADLK; - case ERRdiskfull: - return -ENOSPC; - default: - class = "ERRHRD"; - goto err_unknown; - } - } else if (errcls == ERRCMD) { - class = "ERRCMD"; - } else if (errcls == SUCCESS) { - return 0; /* This is the only valid 0 return */ - } - -err_unknown: - printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n", - class, error, SMB_CMD(req->rq_header)); - return -EIO; -} - -/* 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_request *req, int command, int wct, int bcc) -{ - int result; - - req->rq_resp_wct = wct; - req->rq_resp_bcc = bcc; - - result = smb_add_request(req); - if (result != 0) { - DEBUG1("smb_request failed\n"); - goto out; - } - - if (smb_valid_packet(req->rq_header) != 0) { - PARANOIA("invalid packet!\n"); - goto out; - } - - result = smb_verify(req->rq_header, command, wct, bcc); - -out: - return result; -} - -/* - * This implements the NEWCONN ioctl. It installs the server pid, - * sets server->state to CONN_VALID, and wakes up the waiting process. - */ -int -smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt) -{ - struct file *filp; - struct sock *sk; - int error; - - VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid); - - smb_lock_server(server); - - /* - * Make sure we don't already have a valid connection ... - */ - error = -EINVAL; - if (server->state == CONN_VALID) - goto out; - - error = -EACCES; - if (current_uid() != server->mnt->mounted_uid && - !capable(CAP_SYS_ADMIN)) - goto out; - - error = -EBADF; - filp = fget(opt->fd); - if (!filp) - goto out; - if (!smb_valid_socket(filp->f_path.dentry->d_inode)) - goto out_putf; - - server->sock_file = filp; - server->conn_pid = get_pid(task_pid(current)); - server->opt = *opt; - server->generation += 1; - server->state = CONN_VALID; - error = 0; - - if (server->conn_error) { - /* - * conn_error is the returncode we originally decided to - * drop the old connection on. This message should be positive - * and not make people ask questions on why smbfs is printing - * error messages ... - */ - printk(KERN_INFO "SMB connection re-established (%d)\n", - server->conn_error); - server->conn_error = 0; - } - - /* - * Store the server in sock user_data (Only used by sunrpc) - */ - sk = SOCKET_I(filp->f_path.dentry->d_inode)->sk; - sk->sk_user_data = server; - - /* chain into the data_ready callback */ - server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready); - - /* check if we have an old smbmount that uses seconds for the - serverzone */ - if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60) - server->opt.serverzone /= 60; - - /* now that we have an established connection we can detect the server - type and enable bug workarounds */ - if (server->opt.protocol < SMB_PROTOCOL_LANMAN2) - install_ops(server->ops, &smb_ops_core); - else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2) - install_ops(server->ops, &smb_ops_os2); - else if (server->opt.protocol == SMB_PROTOCOL_NT1 && - (server->opt.max_xmit < 0x1000) && - !(server->opt.capabilities & SMB_CAP_NT_SMBS)) { - /* FIXME: can we kill the WIN95 flag now? */ - server->mnt->flags |= SMB_MOUNT_WIN95; - VERBOSE("detected WIN95 server\n"); - install_ops(server->ops, &smb_ops_win95); - } else { - /* - * Samba has max_xmit 65535 - * NT4spX has max_xmit 4536 (or something like that) - * win2k has ... - */ - VERBOSE("detected NT1 (Samba, NT4/5) server\n"); - install_ops(server->ops, &smb_ops_winNT); - } - - /* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */ - if (server->mnt->flags & SMB_MOUNT_OLDATTR) { - server->ops->getattr = smb_proc_getattr_core; - } else if (server->mnt->flags & SMB_MOUNT_DIRATTR) { - server->ops->getattr = smb_proc_getattr_ff; - } - - /* Decode server capabilities */ - if (server->opt.capabilities & SMB_CAP_LARGE_FILES) { - /* Should be ok to set this now, as no one can access the - mount until the connection has been established. */ - SB_of(server)->s_maxbytes = ~0ULL >> 1; - VERBOSE("LFS enabled\n"); - } - if (server->opt.capabilities & SMB_CAP_UNICODE) { - server->mnt->flags |= SMB_MOUNT_UNICODE; - VERBOSE("Unicode enabled\n"); - } else { - server->mnt->flags &= ~SMB_MOUNT_UNICODE; - } -#if 0 - /* flags we may test for other patches ... */ - if (server->opt.capabilities & SMB_CAP_LARGE_READX) { - VERBOSE("Large reads enabled\n"); - } - if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) { - VERBOSE("Large writes enabled\n"); - } -#endif - if (server->opt.capabilities & SMB_CAP_UNIX) { - struct inode *inode; - VERBOSE("Using UNIX CIFS extensions\n"); - install_ops(server->ops, &smb_ops_unix); - inode = SB_of(server)->s_root->d_inode; - if (inode) - inode->i_op = &smb_dir_inode_operations_unix; - } - - VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n", - server->opt.protocol, server->opt.max_xmit, - pid_nr(server->conn_pid), server->opt.capabilities); - - /* FIXME: this really should be done by smbmount. */ - if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) { - server->opt.max_xmit = SMB_MAX_PACKET_SIZE; - } - - smb_unlock_server(server); - smbiod_wake_up(); - if (server->opt.capabilities & SMB_CAP_UNIX) - smb_proc_query_cifsunix(server); - - server->conn_complete++; - wake_up_interruptible_all(&server->conn_wq); - return error; - -out: - smb_unlock_server(server); - smbiod_wake_up(); - return error; - -out_putf: - fput(filp); - goto out; -} - -/* smb_setup_header: We completely set up the packet. You only have to - insert the command-specific fields */ - -__u8 * -smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc) -{ - __u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2; - __u8 *p = req->rq_header; - struct smb_sb_info *server = req->rq_server; - - p = smb_encode_smb_length(p, xmit_len - 4); - - *p++ = 0xff; - *p++ = 'S'; - *p++ = 'M'; - *p++ = 'B'; - *p++ = command; - - memset(p, '\0', 19); - p += 19; - p += 8; - - if (server->opt.protocol > SMB_PROTOCOL_CORE) { - int flags = SMB_FLAGS_CASELESS_PATHNAMES; - int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS | - SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */ - - *(req->rq_header + smb_flg) = flags; - if (server->mnt->flags & SMB_MOUNT_UNICODE) - flags2 |= SMB_FLAGS2_UNICODE_STRINGS; - WSET(req->rq_header, smb_flg2, flags2); - } - *p++ = wct; /* wct */ - p += 2 * wct; - WSET(p, 0, bcc); - - /* Include the header in the data to send */ - req->rq_iovlen = 1; - req->rq_iov[0].iov_base = req->rq_header; - req->rq_iov[0].iov_len = xmit_len - bcc; - - return req->rq_buffer; -} - -static void -smb_setup_bcc(struct smb_request *req, __u8 *p) -{ - u16 bcc = p - req->rq_buffer; - u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header); - - WSET(pbcc, 0, bcc); - - smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN + - 2*SMB_WCT(req->rq_header) - 2 + bcc); - - /* Include the "bytes" in the data to send */ - req->rq_iovlen = 2; - req->rq_iov[1].iov_base = req->rq_buffer; - req->rq_iov[1].iov_len = bcc; -} - -static int -smb_proc_seek(struct smb_sb_info *server, __u16 fileid, - __u16 mode, off_t offset) -{ - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBlseek, 4, 0); - WSET(req->rq_header, smb_vwv0, fileid); - WSET(req->rq_header, smb_vwv1, mode); - DSET(req->rq_header, smb_vwv2, offset); - req->rq_flags |= SMB_REQ_NORETRY; - - result = smb_request_ok(req, SMBlseek, 2, 0); - if (result < 0) { - result = 0; - goto out_free; - } - - result = DVAL(req->rq_header, smb_vwv0); -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish) -{ - struct inode *ino = dentry->d_inode; - struct smb_inode_info *ei = SMB_I(ino); - int mode, read_write = 0x42, read_only = 0x40; - int res; - char *p; - struct smb_request *req; - - /* - * Attempt to open r/w, unless there are no write privileges. - */ - mode = read_write; - if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH))) - mode = read_only; -#if 0 - /* FIXME: why is this code not in? below we fix it so that a caller - wanting RO doesn't get RW. smb_revalidate_inode does some - optimization based on access mode. tail -f needs it to be correct. - - We must open rw since we don't do the open if called a second time - with different 'wish'. Is that not supported by smb servers? */ - if (!(wish & (O_WRONLY | O_RDWR))) - mode = read_only; -#endif - - res = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - retry: - p = smb_setup_header(req, SMBopen, 2, 0); - WSET(req->rq_header, smb_vwv0, mode); - WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR); - res = smb_simple_encode_path(req, &p, dentry, NULL); - if (res < 0) - goto out_free; - smb_setup_bcc(req, p); - - res = smb_request_ok(req, SMBopen, 7, 0); - if (res != 0) { - if (mode == read_write && - (res == -EACCES || res == -ETXTBSY || res == -EROFS)) - { - VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n", - DENTRY_PATH(dentry), res); - mode = read_only; - req->rq_flags = 0; - goto retry; - } - goto out_free; - } - /* We should now have data in vwv[0..6]. */ - - ei->fileid = WVAL(req->rq_header, smb_vwv0); - ei->attr = WVAL(req->rq_header, smb_vwv1); - /* smb_vwv2 has mtime */ - /* smb_vwv4 has size */ - ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK); - ei->open = server->generation; - -out_free: - smb_rput(req); -out: - return res; -} - -/* - * Make sure the file is open, and check that the access - * is compatible with the desired access. - */ -int -smb_open(struct dentry *dentry, int wish) -{ - struct inode *inode = dentry->d_inode; - int result; - __u16 access; - - result = -ENOENT; - if (!inode) { - printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n", - DENTRY_PATH(dentry)); - goto out; - } - - if (!smb_is_open(inode)) { - struct smb_sb_info *server = server_from_inode(inode); - result = 0; - if (!smb_is_open(inode)) - result = smb_proc_open(server, dentry, wish); - if (result) - goto out; - /* - * A successful open means the path is still valid ... - */ - smb_renew_times(dentry); - } - - /* - * Check whether the access is compatible with the desired mode. - */ - result = 0; - access = SMB_I(inode)->access; - if (access != wish && access != SMB_O_RDWR) { - PARANOIA("%s/%s access denied, access=%x, wish=%x\n", - DENTRY_PATH(dentry), access, wish); - result = -EACCES; - } -out: - return result; -} - -static int -smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime) -{ - struct smb_request *req; - int result = -ENOMEM; - - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBclose, 3, 0); - WSET(req->rq_header, smb_vwv0, fileid); - DSET(req->rq_header, smb_vwv1, utc2local(server, mtime)); - req->rq_flags |= SMB_REQ_NORETRY; - result = smb_request_ok(req, SMBclose, 0, 0); - - smb_rput(req); -out: - return result; -} - -/* - * Win NT 4.0 has an apparent bug in that it fails to update the - * modify time when writing to a file. As a workaround, we update - * both modify and access time locally, and post the times to the - * server when closing the file. - */ -static int -smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino) -{ - struct smb_inode_info *ei = SMB_I(ino); - int result = 0; - if (smb_is_open(ino)) - { - /* - * We clear the open flag in advance, in case another - * process observes the value while we block below. - */ - ei->open = 0; - - /* - * Kludge alert: SMB timestamps are accurate only to - * two seconds ... round the times to avoid needless - * cache invalidations! - */ - if (ino->i_mtime.tv_sec & 1) { - ino->i_mtime.tv_sec--; - ino->i_mtime.tv_nsec = 0; - } - if (ino->i_atime.tv_sec & 1) { - ino->i_atime.tv_sec--; - ino->i_atime.tv_nsec = 0; - } - /* - * If the file is open with write permissions, - * update the time stamps to sync mtime and atime. - */ - if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 && - (server->opt.protocol >= SMB_PROTOCOL_LANMAN2) && - !(ei->access == SMB_O_RDONLY)) - { - struct smb_fattr fattr; - smb_get_inode_attr(ino, &fattr); - smb_proc_setattr_ext(server, ino, &fattr); - } - - result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec); - /* - * Force a revalidation after closing ... some servers - * don't post the size until the file has been closed. - */ - if (server->opt.protocol < SMB_PROTOCOL_NT1) - ei->oldmtime = 0; - ei->closed = jiffies; - } - return result; -} - -int -smb_close(struct inode *ino) -{ - int result = 0; - - if (smb_is_open(ino)) { - struct smb_sb_info *server = server_from_inode(ino); - result = smb_proc_close_inode(server, ino); - } - return result; -} - -/* - * This is used to close a file following a failed instantiate. - * Since we don't have an inode, we can't use any of the above. - */ -int -smb_close_fileid(struct dentry *dentry, __u16 fileid) -{ - struct smb_sb_info *server = server_from_dentry(dentry); - int result; - - result = smb_proc_close(server, fileid, get_seconds()); - return result; -} - -/* In smb_proc_read and smb_proc_write we do not retry, because the - file-id would not be valid after a reconnection. */ - -static void -smb_proc_read_data(struct smb_request *req) -{ - req->rq_iov[0].iov_base = req->rq_buffer; - req->rq_iov[0].iov_len = 3; - - req->rq_iov[1].iov_base = req->rq_page; - req->rq_iov[1].iov_len = req->rq_rsize; - req->rq_iovlen = 2; - - req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd; -} - -static int -smb_proc_read(struct inode *inode, loff_t offset, int count, char *data) -{ - struct smb_sb_info *server = server_from_inode(inode); - __u16 returned_count, data_len; - unsigned char *buf; - int result; - struct smb_request *req; - u8 rbuf[4]; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBread, 5, 0); - buf = req->rq_header; - WSET(buf, smb_vwv0, SMB_I(inode)->fileid); - WSET(buf, smb_vwv1, count); - DSET(buf, smb_vwv2, offset); - WSET(buf, smb_vwv4, 0); - - req->rq_page = data; - req->rq_rsize = count; - req->rq_callback = smb_proc_read_data; - req->rq_buffer = rbuf; - req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC; - - result = smb_request_ok(req, SMBread, 5, -1); - if (result < 0) - goto out_free; - returned_count = WVAL(req->rq_header, smb_vwv0); - - data_len = WVAL(rbuf, 1); - - if (returned_count != data_len) { - printk(KERN_NOTICE "smb_proc_read: returned != data_len\n"); - printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n", - returned_count, data_len); - } - result = data_len; - -out_free: - smb_rput(req); -out: - VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n", - inode->i_ino, SMB_I(inode)->fileid, count, result); - return result; -} - -static int -smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data) -{ - struct smb_sb_info *server = server_from_inode(inode); - int result; - u16 fileid = SMB_I(inode)->fileid; - u8 buf[4]; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n", - inode->i_ino, fileid, count, offset); - - smb_setup_header(req, SMBwrite, 5, count + 3); - WSET(req->rq_header, smb_vwv0, fileid); - WSET(req->rq_header, smb_vwv1, count); - DSET(req->rq_header, smb_vwv2, offset); - WSET(req->rq_header, smb_vwv4, 0); - - buf[0] = 1; - WSET(buf, 1, count); /* yes, again ... */ - req->rq_iov[1].iov_base = buf; - req->rq_iov[1].iov_len = 3; - req->rq_iov[2].iov_base = (char *) data; - req->rq_iov[2].iov_len = count; - req->rq_iovlen = 3; - req->rq_flags |= SMB_REQ_NORETRY; - - result = smb_request_ok(req, SMBwrite, 1, 0); - if (result >= 0) - result = WVAL(req->rq_header, smb_vwv0); - - smb_rput(req); -out: - return result; -} - -/* - * In smb_proc_readX and smb_proc_writeX we do not retry, because the - * file-id would not be valid after a reconnection. - */ - -#define SMB_READX_MAX_PAD 64 -static void -smb_proc_readX_data(struct smb_request *req) -{ - /* header length, excluding the netbios length (-4) */ - int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2; - int data_off = WVAL(req->rq_header, smb_vwv6); - - /* - * Some genius made the padding to the data bytes arbitrary. - * So we must first calculate the amount of padding used by the server. - */ - data_off -= hdrlen; - if (data_off > SMB_READX_MAX_PAD || data_off < 0) { - PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n"); - PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off); - req->rq_rlen = req->rq_bufsize + 1; - return; - } - req->rq_iov[0].iov_base = req->rq_buffer; - req->rq_iov[0].iov_len = data_off; - - req->rq_iov[1].iov_base = req->rq_page; - req->rq_iov[1].iov_len = req->rq_rsize; - req->rq_iovlen = 2; - - req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd; -} - -static int -smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data) -{ - struct smb_sb_info *server = server_from_inode(inode); - unsigned char *buf; - int result; - struct smb_request *req; - static char pad[SMB_READX_MAX_PAD]; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBreadX, 12, 0); - buf = req->rq_header; - WSET(buf, smb_vwv0, 0x00ff); - WSET(buf, smb_vwv1, 0); - WSET(buf, smb_vwv2, SMB_I(inode)->fileid); - DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */ - WSET(buf, smb_vwv5, count); - WSET(buf, smb_vwv6, 0); - DSET(buf, smb_vwv7, 0); - WSET(buf, smb_vwv9, 0); - DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */ - WSET(buf, smb_vwv11, 0); - - req->rq_page = data; - req->rq_rsize = count; - req->rq_callback = smb_proc_readX_data; - req->rq_buffer = pad; - req->rq_bufsize = SMB_READX_MAX_PAD; - req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY; - - result = smb_request_ok(req, SMBreadX, 12, -1); - if (result < 0) - goto out_free; - result = WVAL(req->rq_header, smb_vwv5); - -out_free: - smb_rput(req); -out: - VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n", - inode->i_ino, SMB_I(inode)->fileid, count, result); - return result; -} - -static int -smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data) -{ - struct smb_sb_info *server = server_from_inode(inode); - int result; - u8 *p; - static u8 pad[4]; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n", - inode->i_ino, SMB_I(inode)->fileid, count, offset); - - p = smb_setup_header(req, SMBwriteX, 14, count + 1); - WSET(req->rq_header, smb_vwv0, 0x00ff); - WSET(req->rq_header, smb_vwv1, 0); - WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid); - DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */ - DSET(req->rq_header, smb_vwv5, 0); - WSET(req->rq_header, smb_vwv7, 0); /* write mode */ - WSET(req->rq_header, smb_vwv8, 0); - WSET(req->rq_header, smb_vwv9, 0); - WSET(req->rq_header, smb_vwv10, count); /* data length */ - WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1); - DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32)); - - req->rq_iov[1].iov_base = pad; - req->rq_iov[1].iov_len = 1; - req->rq_iov[2].iov_base = (char *) data; - req->rq_iov[2].iov_len = count; - req->rq_iovlen = 3; - req->rq_flags |= SMB_REQ_NORETRY; - - result = smb_request_ok(req, SMBwriteX, 6, 0); - if (result >= 0) - result = WVAL(req->rq_header, smb_vwv2); - - smb_rput(req); -out: - return result; -} - -int -smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid) -{ - struct smb_sb_info *server = server_from_dentry(dentry); - char *p; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - p = smb_setup_header(req, SMBcreate, 3, 0); - WSET(req->rq_header, smb_vwv0, attr); - DSET(req->rq_header, smb_vwv1, utc2local(server, ctime)); - result = smb_simple_encode_path(req, &p, dentry, NULL); - if (result < 0) - goto out_free; - smb_setup_bcc(req, p); - - result = smb_request_ok(req, SMBcreate, 1, 0); - if (result < 0) - goto out_free; - - *fileid = WVAL(req->rq_header, smb_vwv0); - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -int -smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry) -{ - struct smb_sb_info *server = server_from_dentry(old_dentry); - char *p; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - p = smb_setup_header(req, SMBmv, 1, 0); - WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR); - result = smb_simple_encode_path(req, &p, old_dentry, NULL); - if (result < 0) - goto out_free; - result = smb_simple_encode_path(req, &p, new_dentry, NULL); - if (result < 0) - goto out_free; - smb_setup_bcc(req, p); - - if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0) - goto out_free; - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -/* - * Code common to mkdir and rmdir. - */ -static int -smb_proc_generic_command(struct dentry *dentry, __u8 command) -{ - struct smb_sb_info *server = server_from_dentry(dentry); - char *p; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - p = smb_setup_header(req, command, 0, 0); - result = smb_simple_encode_path(req, &p, dentry, NULL); - if (result < 0) - goto out_free; - smb_setup_bcc(req, p); - - result = smb_request_ok(req, command, 0, 0); - if (result < 0) - goto out_free; - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -int -smb_proc_mkdir(struct dentry *dentry) -{ - return smb_proc_generic_command(dentry, SMBmkdir); -} - -int -smb_proc_rmdir(struct dentry *dentry) -{ - return smb_proc_generic_command(dentry, SMBrmdir); -} - -#if SMBFS_POSIX_UNLINK -/* - * Removes readonly attribute from a file. Used by unlink to give posix - * semantics. - */ -static int -smb_set_rw(struct dentry *dentry,struct smb_sb_info *server) -{ - int result; - struct smb_fattr fattr; - - /* FIXME: cifsUE should allow removing a readonly file. */ - - /* first get current attribute */ - smb_init_dirent(server, &fattr); - result = server->ops->getattr(server, dentry, &fattr); - smb_finish_dirent(server, &fattr); - if (result < 0) - return result; - - /* if RONLY attribute is set, remove it */ - if (fattr.attr & aRONLY) { /* read only attribute is set */ - fattr.attr &= ~aRONLY; - result = smb_proc_setattr_core(server, dentry, fattr.attr); - } - return result; -} -#endif - -int -smb_proc_unlink(struct dentry *dentry) -{ - struct smb_sb_info *server = server_from_dentry(dentry); - int flag = 0; - char *p; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - retry: - p = smb_setup_header(req, SMBunlink, 1, 0); - WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN); - result = smb_simple_encode_path(req, &p, dentry, NULL); - if (result < 0) - goto out_free; - smb_setup_bcc(req, p); - - if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) { -#if SMBFS_POSIX_UNLINK - if (result == -EACCES && !flag) { - /* Posix semantics is for the read-only state - of a file to be ignored in unlink(). In the - SMB world a unlink() is refused on a - read-only file. To make things easier for - unix users we try to override the files - permission if the unlink fails with the - right error. - This introduces a race condition that could - lead to a file being written by someone who - shouldn't have access, but as far as I can - tell that is unavoidable */ - - /* remove RONLY attribute and try again */ - result = smb_set_rw(dentry,server); - if (result == 0) { - flag = 1; - req->rq_flags = 0; - goto retry; - } - } -#endif - goto out_free; - } - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -int -smb_proc_flush(struct smb_sb_info *server, __u16 fileid) -{ - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBflush, 1, 0); - WSET(req->rq_header, smb_vwv0, fileid); - req->rq_flags |= SMB_REQ_NORETRY; - result = smb_request_ok(req, SMBflush, 0, 0); - - smb_rput(req); -out: - return result; -} - -static int -smb_proc_trunc32(struct inode *inode, loff_t length) -{ - /* - * Writing 0bytes is old-SMB magic for truncating files. - * MAX_NON_LFS should prevent this from being called with a too - * large offset. - */ - return smb_proc_write(inode, length, 0, NULL); -} - -static int -smb_proc_trunc64(struct inode *inode, loff_t length) -{ - struct smb_sb_info *server = server_from_inode(inode); - int result; - char *param; - char *data; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 14))) - goto out; - - param = req->rq_buffer; - data = req->rq_buffer + 6; - - /* FIXME: must we also set allocation size? winNT seems to do that */ - WSET(param, 0, SMB_I(inode)->fileid); - WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO); - WSET(param, 4, 0); - LSET(data, 0, length); - - req->rq_trans2_command = TRANSACT2_SETFILEINFO; - req->rq_ldata = 8; - req->rq_data = data; - req->rq_lparm = 6; - req->rq_parm = param; - req->rq_flags |= SMB_REQ_NORETRY; - result = smb_add_request(req); - if (result < 0) - goto out_free; - - result = 0; - if (req->rq_rcls != 0) - result = smb_errno(req); - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_trunc95(struct inode *inode, loff_t length) -{ - struct smb_sb_info *server = server_from_inode(inode); - int result = smb_proc_trunc32(inode, length); - - /* - * win9x doesn't appear to update the size immediately. - * It will return the old file size after the truncate, - * confusing smbfs. So we force an update. - * - * FIXME: is this still necessary? - */ - smb_proc_flush(server, SMB_I(inode)->fileid); - return result; -} - -static void -smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr) -{ - memset(fattr, 0, sizeof(*fattr)); - - fattr->f_nlink = 1; - fattr->f_uid = server->mnt->uid; - fattr->f_gid = server->mnt->gid; - fattr->f_unix = 0; -} - -static void -smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr) -{ - if (fattr->f_unix) - return; - - fattr->f_mode = server->mnt->file_mode; - if (fattr->attr & aDIR) { - fattr->f_mode = server->mnt->dir_mode; - fattr->f_size = SMB_ST_BLKSIZE; - } - /* Check the read-only flag */ - if (fattr->attr & aRONLY) - fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH); - - /* How many 512 byte blocks do we need for this file? */ - fattr->f_blocks = 0; - if (fattr->f_size != 0) - fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9); - return; -} - -void -smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr, - struct super_block *sb) -{ - smb_init_dirent(server, fattr); - fattr->attr = aDIR; - fattr->f_ino = 2; /* traditional root inode number */ - fattr->f_mtime = current_fs_time(sb); - smb_finish_dirent(server, fattr); -} - -/* - * Decode a dirent for old protocols - * - * qname is filled with the decoded, and possibly translated, name. - * fattr receives decoded attributes - * - * Bugs Noted: - * (1) Pathworks servers may pad the name with extra spaces. - */ -static char * -smb_decode_short_dirent(struct smb_sb_info *server, char *p, - struct qstr *qname, struct smb_fattr *fattr, - unsigned char *name_buf) -{ - int len; - - /* - * SMB doesn't have a concept of inode numbers ... - */ - smb_init_dirent(server, fattr); - fattr->f_ino = 0; /* FIXME: do we need this? */ - - p += SMB_STATUS_SIZE; /* reserved (search_status) */ - fattr->attr = *p; - fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1)); - fattr->f_mtime.tv_nsec = 0; - fattr->f_size = DVAL(p, 5); - fattr->f_ctime = fattr->f_mtime; - fattr->f_atime = fattr->f_mtime; - qname->name = p + 9; - len = strnlen(qname->name, 12); - - /* - * Trim trailing blanks for Pathworks servers - */ - while (len > 2 && qname->name[len-1] == ' ') - len--; - - smb_finish_dirent(server, fattr); - -#if 0 - /* FIXME: These only work for ascii chars, and recent smbmount doesn't - allow the flag to be set anyway. It kills const. Remove? */ - switch (server->opt.case_handling) { - case SMB_CASE_UPPER: - str_upper(entry->name, len); - break; - case SMB_CASE_LOWER: - str_lower(entry->name, len); - break; - default: - break; - } -#endif - - qname->len = 0; - len = server->ops->convert(name_buf, SMB_MAXNAMELEN, - qname->name, len, - server->remote_nls, server->local_nls); - if (len > 0) { - qname->len = len; - qname->name = name_buf; - DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name); - } - - 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 < - * SMB_PROTOCOL_LANMAN2 - */ -static int -smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir, - struct smb_cache_control *ctl) -{ - struct dentry *dir = filp->f_path.dentry; - struct smb_sb_info *server = server_from_dentry(dir); - struct qstr qname; - struct smb_fattr fattr; - char *p; - int result; - int i, first, entries_seen, entries; - int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE; - __u16 bcc; - __u16 count; - char status[SMB_STATUS_SIZE]; - static struct qstr mask = { - .name = "*.*", - .len = 3, - }; - unsigned char *last_status; - struct smb_request *req; - unsigned char *name_buf; - - VERBOSE("%s/%s\n", DENTRY_PATH(dir)); - - lock_kernel(); - - result = -ENOMEM; - if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL))) - goto out; - - first = 1; - entries = 0; - entries_seen = 2; /* implicit . and .. */ - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, server->opt.max_xmit))) - goto out_name; - - while (1) { - p = smb_setup_header(req, SMBsearch, 2, 0); - WSET(req->rq_header, smb_vwv0, entries_asked); - WSET(req->rq_header, smb_vwv1, aDIR); - if (first == 1) { - result = smb_simple_encode_path(req, &p, dir, &mask); - if (result < 0) - goto out_free; - if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) { - result = -ENAMETOOLONG; - goto out_free; - } - *p++ = 5; - WSET(p, 0, 0); - p += 2; - first = 0; - } else { - if (p + 5 + SMB_STATUS_SIZE > - (char *)req->rq_buffer + req->rq_bufsize) { - result = -ENAMETOOLONG; - goto out_free; - } - - *p++ = 4; - *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(req, p); - - result = smb_request_ok(req, SMBsearch, 1, -1); - if (result < 0) { - if ((req->rq_rcls == ERRDOS) && - (req->rq_err == ERRnofiles)) - break; - goto out_free; - } - count = WVAL(req->rq_header, smb_vwv0); - if (count <= 0) - break; - - result = -EIO; - bcc = smb_bcc(req->rq_header); - if (bcc != count * SMB_DIRINFO_SIZE + 3) - goto out_free; - p = req->rq_buffer + 3; - - - /* Make sure the response fits in the buffer. Fixed sized - entries means we don't have to check in the decode loop. */ - - last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE; - - if (last_status + SMB_DIRINFO_SIZE >= - req->rq_buffer + req->rq_bufsize) { - printk(KERN_ERR "smb_proc_readdir_short: " - "last dir entry outside buffer! " - "%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status, - req->rq_bufsize, req->rq_buffer); - goto out_free; - } - - /* Read the last entry into the status field. */ - memcpy(status, last_status, SMB_STATUS_SIZE); - - - /* Now we are ready to parse smb directory entries. */ - - for (i = 0; i < count; i++) { - p = smb_decode_short_dirent(server, p, - &qname, &fattr, name_buf); - if (qname.len == 0) - continue; - - if (entries_seen == 2 && qname.name[0] == '.') { - if (qname.len == 1) - continue; - if (qname.name[1] == '.' && qname.len == 2) - continue; - } - if (!smb_fill_cache(filp, dirent, filldir, ctl, - &qname, &fattr)) - ; /* stop reading? */ - entries_seen++; - } - } - result = entries; - -out_free: - smb_rput(req); -out_name: - kfree(name_buf); -out: - unlock_kernel(); - return result; -} - -static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p) -{ - u64 size, disk_bytes; - - /* FIXME: verify nls support. all is sent as utf8? */ - - fattr->f_unix = 1; - fattr->f_mode = 0; - - /* FIXME: use the uniqueID from the remote instead? */ - /* 0 L file size in bytes */ - /* 8 L file size on disk in bytes (block count) */ - /* 40 L uid */ - /* 48 L gid */ - /* 56 W file type */ - /* 60 L devmajor */ - /* 68 L devminor */ - /* 76 L unique ID (inode) */ - /* 84 L permissions */ - /* 92 L link count */ - - size = LVAL(p, 0); - disk_bytes = LVAL(p, 8); - - /* - * Some samba versions round up on-disk byte usage - * to 1MB boundaries, making it useless. When seeing - * that, use the size instead. - */ - if (!(disk_bytes & 0xfffff)) - disk_bytes = size+511; - - fattr->f_size = size; - fattr->f_blocks = disk_bytes >> 9; - fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16)); - fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24)); - fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32)); - - if (server->mnt->flags & SMB_MOUNT_UID) - fattr->f_uid = server->mnt->uid; - else - fattr->f_uid = LVAL(p, 40); - - if (server->mnt->flags & SMB_MOUNT_GID) - fattr->f_gid = server->mnt->gid; - else - fattr->f_gid = LVAL(p, 48); - - fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56)); - - if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) { - __u64 major = LVAL(p, 60); - __u64 minor = LVAL(p, 68); - - fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff); - if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) || - MINOR(fattr->f_rdev) != (minor & 0xffffffff)) - fattr->f_rdev = 0; - } - - fattr->f_mode |= LVAL(p, 84); - - if ( (server->mnt->flags & SMB_MOUNT_DMODE) && - (S_ISDIR(fattr->f_mode)) ) - fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR; - else if ( (server->mnt->flags & SMB_MOUNT_FMODE) && - !(S_ISDIR(fattr->f_mode)) ) - fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) | - (fattr->f_mode & S_IFMT); - -} - -/* - * Interpret a long filename structure using the specified info level: - * level 1 for anything below NT1 protocol - * level 260 for NT1 protocol - * - * qname is filled with the decoded, and possibly translated, name - * fattr receives decoded attributes. - * - * Bugs Noted: - * (1) Win NT 4.0 appends a null byte to names and counts it in the length! - */ -static char * -smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level, - struct qstr *qname, struct smb_fattr *fattr, - unsigned char *name_buf) -{ - char *result; - unsigned int len = 0; - int n; - __u16 date, time; - int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE); - - /* - * SMB doesn't have a concept of inode numbers ... - */ - smb_init_dirent(server, fattr); - fattr->f_ino = 0; /* FIXME: do we need this? */ - - switch (level) { - case 1: - len = *((unsigned char *) p + 22); - qname->name = p + 23; - result = p + 24 + len; - - date = WVAL(p, 0); - time = WVAL(p, 2); - fattr->f_ctime.tv_sec = date_dos2unix(server, date, time); - fattr->f_ctime.tv_nsec = 0; - - date = WVAL(p, 4); - time = WVAL(p, 6); - fattr->f_atime.tv_sec = date_dos2unix(server, date, time); - fattr->f_atime.tv_nsec = 0; - - date = WVAL(p, 8); - time = WVAL(p, 10); - fattr->f_mtime.tv_sec = date_dos2unix(server, date, time); - fattr->f_mtime.tv_nsec = 0; - fattr->f_size = DVAL(p, 12); - /* ULONG allocation size */ - fattr->attr = WVAL(p, 20); - - VERBOSE("info 1 at %p, len=%d, name=%.*s\n", - p, len, len, qname->name); - break; - case 260: - result = p + WVAL(p, 0); - len = DVAL(p, 60); - if (len > 255) len = 255; - /* NT4 null terminates, unless we are using unicode ... */ - qname->name = p + 94; - if (!unicode && len && qname->name[len-1] == '\0') - len--; - - fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8)); - fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16)); - fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24)); - /* change time (32) */ - fattr->f_size = LVAL(p, 40); - /* alloc size (48) */ - fattr->attr = DVAL(p, 56); - - VERBOSE("info 260 at %p, len=%d, name=%.*s\n", - p, len, len, qname->name); - break; - case SMB_FIND_FILE_UNIX: - result = p + WVAL(p, 0); - qname->name = p + 108; - - len = strlen(qname->name); - /* FIXME: should we check the length?? */ - - p += 8; - smb_decode_unix_basic(fattr, server, p); - VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n", - p, len, len, qname->name); - break; - default: - PARANOIA("Unknown info level %d\n", level); - result = p + WVAL(p, 0); - goto out; - } - - smb_finish_dirent(server, fattr); - -#if 0 - /* FIXME: These only work for ascii chars, and recent smbmount doesn't - allow the flag to be set anyway. Remove? */ - switch (server->opt.case_handling) { - case SMB_CASE_UPPER: - str_upper(qname->name, len); - break; - case SMB_CASE_LOWER: - str_lower(qname->name, len); - break; - default: - break; - } -#endif - - qname->len = 0; - n = server->ops->convert(name_buf, SMB_MAXNAMELEN, - qname->name, len, - server->remote_nls, server->local_nls); - if (n > 0) { - qname->len = n; - qname->name = name_buf; - } - -out: - return result; -} - -/* findfirst/findnext flags */ -#define SMB_CLOSE_AFTER_FIRST (1<<0) -#define SMB_CLOSE_IF_END (1<<1) -#define SMB_REQUIRE_RESUME_KEY (1<<2) -#define SMB_CONTINUE_BIT (1<<3) - -/* - * Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in - * source/libsmb/clilist.c. When looking for smb bugs in the readdir code, - * go there for advise. - * - * Bugs Noted: - * (1) When using Info Level 1 Win NT 4.0 truncates directory listings - * for certain patterns of names and/or lengths. The breakage pattern - * is completely reproducible and can be toggled by the creation of a - * single file. (E.g. echo hi >foo breaks, rm -f foo works.) - */ -static int -smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir, - struct smb_cache_control *ctl) -{ - struct dentry *dir = filp->f_path.dentry; - struct smb_sb_info *server = server_from_dentry(dir); - struct qstr qname; - struct smb_fattr fattr; - - unsigned char *p, *lastname; - char *mask, *param; - __u16 command; - int first, entries_seen; - - /* Both NT and OS/2 accept info level 1 (but see note below). */ - int info_level = 260; - const int max_matches = 512; - - unsigned int ff_searchcount = 0; - unsigned int ff_eos = 0; - unsigned int ff_lastname = 0; - unsigned int ff_dir_handle = 0; - unsigned int loop_count = 0; - unsigned int mask_len, i; - int result; - struct smb_request *req; - unsigned char *name_buf; - static struct qstr star = { - .name = "*", - .len = 1, - }; - - lock_kernel(); - - /* - * We always prefer unix style. Use info level 1 for older - * servers that don't do 260. - */ - if (server->opt.capabilities & SMB_CAP_UNIX) - info_level = SMB_FIND_FILE_UNIX; - else if (server->opt.protocol < SMB_PROTOCOL_NT1) - info_level = 1; - - result = -ENOMEM; - if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL))) - goto out; - if (! (req = smb_alloc_request(server, server->opt.max_xmit))) - goto out_name; - param = req->rq_buffer; - - /* - * Encode the initial path - */ - mask = param + 12; - - result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star); - if (result <= 0) - goto out_free; - mask_len = result - 1; /* mask_len is strlen, not #bytes */ - result = 0; - first = 1; - VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask); - - entries_seen = 2; - ff_eos = 0; - - while (ff_eos == 0) { - loop_count += 1; - if (loop_count > 10) { - printk(KERN_WARNING "smb_proc_readdir_long: " - "Looping in FIND_NEXT??\n"); - result = -EIO; - break; - } - - if (first != 0) { - command = TRANSACT2_FINDFIRST; - WSET(param, 0, aSYSTEM | aHIDDEN | aDIR); - WSET(param, 2, max_matches); /* max count */ - WSET(param, 4, SMB_CLOSE_IF_END); - WSET(param, 6, info_level); - DSET(param, 8, 0); - } else { - command = TRANSACT2_FINDNEXT; - - VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n", - ff_dir_handle, ff_lastname, mask_len, mask); - - WSET(param, 0, ff_dir_handle); /* search handle */ - WSET(param, 2, max_matches); /* max count */ - WSET(param, 4, info_level); - DSET(param, 6, 0); - WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END); - } - - req->rq_trans2_command = command; - req->rq_ldata = 0; - req->rq_data = NULL; - req->rq_lparm = 12 + mask_len + 1; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) { - PARANOIA("error=%d, breaking\n", result); - break; - } - - if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) { - /* a damn Win95 bug - sometimes it clags if you - ask it too fast */ - schedule_timeout_interruptible(msecs_to_jiffies(200)); - continue; - } - - if (req->rq_rcls != 0) { - result = smb_errno(req); - PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n", - mask, result, req->rq_rcls, req->rq_err); - break; - } - - /* parse out some important return info */ - if (first != 0) { - ff_dir_handle = WVAL(req->rq_parm, 0); - ff_searchcount = WVAL(req->rq_parm, 2); - ff_eos = WVAL(req->rq_parm, 4); - ff_lastname = WVAL(req->rq_parm, 8); - } else { - ff_searchcount = WVAL(req->rq_parm, 0); - ff_eos = WVAL(req->rq_parm, 2); - ff_lastname = WVAL(req->rq_parm, 6); - } - - if (ff_searchcount == 0) - break; - - /* Now we are ready to parse smb directory entries. */ - - /* point to the data bytes */ - p = req->rq_data; - for (i = 0; i < ff_searchcount; i++) { - /* make sure we stay within the buffer */ - if (p >= req->rq_data + req->rq_ldata) { - printk(KERN_ERR "smb_proc_readdir_long: " - "dirent pointer outside buffer! " - "%p %d@%p\n", - p, req->rq_ldata, req->rq_data); - result = -EIO; /* always a comm. error? */ - goto out_free; - } - - p = smb_decode_long_dirent(server, p, info_level, - &qname, &fattr, name_buf); - - /* ignore . and .. from the server */ - if (entries_seen == 2 && qname.name[0] == '.') { - if (qname.len == 1) - continue; - if (qname.name[1] == '.' && qname.len == 2) - continue; - } - - if (!smb_fill_cache(filp, dirent, filldir, ctl, - &qname, &fattr)) - ; /* stop reading? */ - entries_seen++; - } - - VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos); - - /* - * We might need the lastname for continuations. - * - * Note that some servers (win95?) point to the filename and - * others (NT4, Samba using NT1) to the dir entry. We assume - * here that those who do not point to a filename do not need - * this info to continue the listing. - * - * OS/2 needs this and talks infolevel 1. - * NetApps want lastname with infolevel 260. - * win2k want lastname with infolevel 260, and points to - * the record not to the name. - * Samba+CifsUnixExt doesn't need lastname. - * - * Both are happy if we return the data they point to. So we do. - * (FIXME: above is not true with win2k) - */ - mask_len = 0; - if (info_level != SMB_FIND_FILE_UNIX && - ff_lastname > 0 && ff_lastname < req->rq_ldata) { - lastname = req->rq_data + ff_lastname; - - switch (info_level) { - case 260: - mask_len = req->rq_ldata - ff_lastname; - break; - case 1: - /* lastname points to a length byte */ - mask_len = *lastname++; - if (ff_lastname + 1 + mask_len > req->rq_ldata) - mask_len = req->rq_ldata - ff_lastname - 1; - break; - } - - /* - * Update the mask string for the next message. - */ - if (mask_len > 255) - mask_len = 255; - if (mask_len) - strncpy(mask, lastname, mask_len); - } - mask_len = strnlen(mask, mask_len); - VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n", - mask_len, ff_lastname, req->rq_ldata, mask_len, mask); - - first = 0; - loop_count = 0; - } - -out_free: - smb_rput(req); -out_name: - kfree(name_buf); -out: - unlock_kernel(); - return result; -} - -/* - * This version uses the trans2 TRANSACT2_FINDFIRST message - * to get the attribute data. - * - * Bugs Noted: - */ -static int -smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry, - struct smb_fattr *fattr) -{ - char *param, *mask; - __u16 date, time; - int mask_len, result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - mask = param + 12; - - mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL); - if (mask_len < 0) { - result = mask_len; - goto out_free; - } - VERBOSE("name=%s, len=%d\n", mask, mask_len); - WSET(param, 0, aSYSTEM | aHIDDEN | aDIR); - WSET(param, 2, 1); /* max count */ - WSET(param, 4, 1); /* close after this call */ - WSET(param, 6, 1); /* info_level */ - DSET(param, 8, 0); - - req->rq_trans2_command = TRANSACT2_FINDFIRST; - req->rq_ldata = 0; - req->rq_data = NULL; - req->rq_lparm = 12 + mask_len; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - if (req->rq_rcls != 0) { - result = smb_errno(req); -#ifdef SMBFS_PARANOIA - if (result != -ENOENT) - PARANOIA("error for %s, rcls=%d, err=%d\n", - mask, req->rq_rcls, req->rq_err); -#endif - goto out_free; - } - /* Make sure we got enough data ... */ - result = -EINVAL; - if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) { - PARANOIA("bad result for %s, len=%d, count=%d\n", - mask, req->rq_ldata, WVAL(req->rq_parm, 2)); - goto out_free; - } - - /* - * Decode the response into the fattr ... - */ - date = WVAL(req->rq_data, 0); - time = WVAL(req->rq_data, 2); - fattr->f_ctime.tv_sec = date_dos2unix(server, date, time); - fattr->f_ctime.tv_nsec = 0; - - date = WVAL(req->rq_data, 4); - time = WVAL(req->rq_data, 6); - fattr->f_atime.tv_sec = date_dos2unix(server, date, time); - fattr->f_atime.tv_nsec = 0; - - date = WVAL(req->rq_data, 8); - time = WVAL(req->rq_data, 10); - fattr->f_mtime.tv_sec = date_dos2unix(server, date, time); - fattr->f_mtime.tv_nsec = 0; - VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n", - mask, date, time, fattr->f_mtime.tv_sec); - fattr->f_size = DVAL(req->rq_data, 12); - /* ULONG allocation size */ - fattr->attr = WVAL(req->rq_data, 20); - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *fattr) -{ - int result; - char *p; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - p = smb_setup_header(req, SMBgetatr, 0, 0); - result = smb_simple_encode_path(req, &p, dir, NULL); - if (result < 0) - goto out_free; - smb_setup_bcc(req, p); - - if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0) - goto out_free; - fattr->attr = WVAL(req->rq_header, smb_vwv0); - fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1)); - fattr->f_mtime.tv_nsec = 0; - fattr->f_size = DVAL(req->rq_header, smb_vwv3); - fattr->f_ctime = fattr->f_mtime; - fattr->f_atime = fattr->f_mtime; -#ifdef SMBFS_DEBUG_TIMESTAMP - printk("getattr_core: %s/%s, mtime=%ld\n", - DENTRY_PATH(dir), fattr->f_mtime); -#endif - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -/* - * Bugs Noted: - * (1) Win 95 swaps the date and time fields in the standard info level. - */ -static int -smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir, - struct smb_request *req, int infolevel) -{ - char *p, *param; - int result; - - param = req->rq_buffer; - WSET(param, 0, infolevel); - DSET(param, 2, 0); - result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL); - if (result < 0) - goto out; - p = param + 6 + result; - - req->rq_trans2_command = TRANSACT2_QPATHINFO; - req->rq_ldata = 0; - req->rq_data = NULL; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out; - if (req->rq_rcls != 0) { - VERBOSE("for %s: result=%d, rcls=%d, err=%d\n", - ¶m[6], result, req->rq_rcls, req->rq_err); - result = smb_errno(req); - goto out; - } - result = -ENOENT; - if (req->rq_ldata < 22) { - PARANOIA("not enough data for %s, len=%d\n", - ¶m[6], req->rq_ldata); - goto out; - } - - result = 0; -out: - return result; -} - -static int -smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *attr) -{ - u16 date, time; - int off_date = 0, off_time = 2; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD); - if (result < 0) - goto out_free; - - /* - * Kludge alert: Win 95 swaps the date and time field, - * contrary to the CIFS docs and Win NT practice. - */ - if (server->mnt->flags & SMB_MOUNT_WIN95) { - off_date = 2; - off_time = 0; - } - date = WVAL(req->rq_data, off_date); - time = WVAL(req->rq_data, off_time); - attr->f_ctime.tv_sec = date_dos2unix(server, date, time); - attr->f_ctime.tv_nsec = 0; - - date = WVAL(req->rq_data, 4 + off_date); - time = WVAL(req->rq_data, 4 + off_time); - attr->f_atime.tv_sec = date_dos2unix(server, date, time); - attr->f_atime.tv_nsec = 0; - - date = WVAL(req->rq_data, 8 + off_date); - time = WVAL(req->rq_data, 8 + off_time); - attr->f_mtime.tv_sec = date_dos2unix(server, date, time); - attr->f_mtime.tv_nsec = 0; -#ifdef SMBFS_DEBUG_TIMESTAMP - printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n", - DENTRY_PATH(dir), date, time, attr->f_mtime); -#endif - attr->f_size = DVAL(req->rq_data, 12); - attr->attr = WVAL(req->rq_data, 20); - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *attr) -{ - struct smb_request *req; - int result; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - result = smb_proc_getattr_trans2(server, dir, req, - SMB_QUERY_FILE_ALL_INFO); - if (result < 0) - goto out_free; - - attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0)); - attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8)); - attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16)); - /* change (24) */ - attr->attr = WVAL(req->rq_data, 32); - /* pad? (34) */ - /* allocated size (40) */ - attr->f_size = LVAL(req->rq_data, 48); - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *attr) -{ - struct smb_request *req; - int result; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - result = smb_proc_getattr_trans2(server, dir, req, - SMB_QUERY_FILE_UNIX_BASIC); - if (result < 0) - goto out_free; - - smb_decode_unix_basic(attr, server, req->rq_data); - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *attr) -{ - struct inode *inode = dir->d_inode; - int result; - - /* FIXME: why not use the "all" version? */ - result = smb_proc_getattr_trans2_std(server, dir, attr); - if (result < 0) - goto out; - - /* - * None of the getattr versions here can make win9x return the right - * filesize if there are changes made to an open file. - * A seek-to-end does return the right size, but we only need to do - * that on files we have written. - */ - if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE && - smb_is_open(inode)) - { - __u16 fileid = SMB_I(inode)->fileid; - attr->f_size = smb_proc_seek(server, fileid, 2, 0); - } - -out: - return result; -} - -static int -smb_proc_ops_wait(struct smb_sb_info *server) -{ - int result; - - result = wait_event_interruptible_timeout(server->conn_wq, - server->conn_complete, 30*HZ); - - if (!result || signal_pending(current)) - return -EIO; - - return 0; -} - -static int -smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir, - struct smb_fattr *fattr) -{ - int result; - - if (smb_proc_ops_wait(server) < 0) - return -EIO; - - smb_init_dirent(server, fattr); - result = server->ops->getattr(server, dir, fattr); - smb_finish_dirent(server, fattr); - - return result; -} - -static int -smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir, - struct smb_cache_control *ctl) -{ - struct smb_sb_info *server = server_from_dentry(filp->f_path.dentry); - - if (smb_proc_ops_wait(server) < 0) - return -EIO; - - return server->ops->readdir(filp, dirent, filldir, ctl); -} - -int -smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr) -{ - struct smb_sb_info *server = server_from_dentry(dir); - int result; - - smb_init_dirent(server, fattr); - result = server->ops->getattr(server, dir, fattr); - smb_finish_dirent(server, fattr); - - return result; -} - - -/* - * Because of bugs in the core protocol, we use this only to set - * attributes. See smb_proc_settime() below for timestamp handling. - * - * Bugs Noted: - * (1) If mtime is non-zero, both Win 3.1 and Win 95 fail - * with an undocumented error (ERRDOS code 50). Setting - * mtime to 0 allows the attributes to be set. - * (2) The extra parameters following the name string aren't - * in the CIFS docs, but seem to be necessary for operation. - */ -static int -smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry, - __u16 attr) -{ - char *p; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - - p = smb_setup_header(req, SMBsetatr, 8, 0); - WSET(req->rq_header, smb_vwv0, attr); - DSET(req->rq_header, smb_vwv1, 0); /* mtime */ - WSET(req->rq_header, smb_vwv3, 0); /* reserved values */ - WSET(req->rq_header, smb_vwv4, 0); - WSET(req->rq_header, smb_vwv5, 0); - WSET(req->rq_header, smb_vwv6, 0); - WSET(req->rq_header, smb_vwv7, 0); - result = smb_simple_encode_path(req, &p, dentry, NULL); - if (result < 0) - goto out_free; - if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) { - result = -ENAMETOOLONG; - goto out_free; - } - *p++ = 4; - *p++ = 0; - smb_setup_bcc(req, p); - - result = smb_request_ok(req, SMBsetatr, 0, 0); - if (result < 0) - goto out_free; - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -/* - * Because of bugs in the trans2 setattr messages, we must set - * attributes and timestamps separately. The core SMBsetatr - * message seems to be the only reliable way to set attributes. - */ -int -smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr) -{ - struct smb_sb_info *server = server_from_dentry(dir); - int result; - - VERBOSE("setting %s/%s, open=%d\n", - DENTRY_PATH(dir), smb_is_open(dir->d_inode)); - result = smb_proc_setattr_core(server, dir, fattr->attr); - return result; -} - -/* - * Sets the timestamps for an file open with write permissions. - */ -static int -smb_proc_setattr_ext(struct smb_sb_info *server, - struct inode *inode, struct smb_fattr *fattr) -{ - __u16 date, time; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBsetattrE, 7, 0); - WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid); - /* We don't change the creation time */ - WSET(req->rq_header, smb_vwv1, 0); - WSET(req->rq_header, smb_vwv2, 0); - date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time); - WSET(req->rq_header, smb_vwv3, date); - WSET(req->rq_header, smb_vwv4, time); - date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time); - WSET(req->rq_header, smb_vwv5, date); - WSET(req->rq_header, smb_vwv6, time); -#ifdef SMBFS_DEBUG_TIMESTAMP - printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n", - date, time, fattr->f_mtime); -#endif - - req->rq_flags |= SMB_REQ_NORETRY; - result = smb_request_ok(req, SMBsetattrE, 0, 0); - if (result < 0) - goto out_free; - result = 0; -out_free: - smb_rput(req); -out: - return result; -} - -/* - * Bugs Noted: - * (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't - * set the file's attribute flags. - */ -static int -smb_proc_setattr_trans2(struct smb_sb_info *server, - struct dentry *dir, struct smb_fattr *fattr) -{ - __u16 date, time; - char *p, *param; - int result; - char data[26]; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - - WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */ - DSET(param, 2, 0); - result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL); - if (result < 0) - goto out_free; - p = param + 6 + result; - - WSET(data, 0, 0); /* creation time */ - WSET(data, 2, 0); - date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time); - WSET(data, 4, date); - WSET(data, 6, time); - date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time); - WSET(data, 8, date); - WSET(data, 10, time); -#ifdef SMBFS_DEBUG_TIMESTAMP - printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n", - DENTRY_PATH(dir), date, time, fattr->f_mtime); -#endif - DSET(data, 12, 0); /* size */ - DSET(data, 16, 0); /* blksize */ - WSET(data, 20, 0); /* attr */ - DSET(data, 22, 0); /* ULONG EA size */ - - req->rq_trans2_command = TRANSACT2_SETPATHINFO; - req->rq_ldata = 26; - req->rq_data = data; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - result = 0; - if (req->rq_rcls != 0) - result = smb_errno(req); - -out_free: - smb_rput(req); -out: - return result; -} - -/* - * ATTR_MODE 0x001 - * ATTR_UID 0x002 - * ATTR_GID 0x004 - * ATTR_SIZE 0x008 - * ATTR_ATIME 0x010 - * ATTR_MTIME 0x020 - * ATTR_CTIME 0x040 - * ATTR_ATIME_SET 0x080 - * ATTR_MTIME_SET 0x100 - * ATTR_FORCE 0x200 - * ATTR_ATTR_FLAG 0x400 - * - * major/minor should only be set by mknod. - */ -int -smb_proc_setattr_unix(struct dentry *d, struct iattr *attr, - unsigned int major, unsigned int minor) -{ - struct smb_sb_info *server = server_from_dentry(d); - u64 nttime; - char *p, *param; - int result; - char data[100]; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - - DEBUG1("valid flags = 0x%04x\n", attr->ia_valid); - - WSET(param, 0, SMB_SET_FILE_UNIX_BASIC); - DSET(param, 2, 0); - result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL); - if (result < 0) - goto out_free; - p = param + 6 + result; - - /* 0 L file size in bytes */ - /* 8 L file size on disk in bytes (block count) */ - /* 40 L uid */ - /* 48 L gid */ - /* 56 W file type enum */ - /* 60 L devmajor */ - /* 68 L devminor */ - /* 76 L unique ID (inode) */ - /* 84 L permissions */ - /* 92 L link count */ - LSET(data, 0, SMB_SIZE_NO_CHANGE); - LSET(data, 8, SMB_SIZE_NO_CHANGE); - LSET(data, 16, SMB_TIME_NO_CHANGE); - LSET(data, 24, SMB_TIME_NO_CHANGE); - LSET(data, 32, SMB_TIME_NO_CHANGE); - LSET(data, 40, SMB_UID_NO_CHANGE); - LSET(data, 48, SMB_GID_NO_CHANGE); - DSET(data, 56, smb_filetype_from_mode(attr->ia_mode)); - LSET(data, 60, major); - LSET(data, 68, minor); - LSET(data, 76, 0); - LSET(data, 84, SMB_MODE_NO_CHANGE); - LSET(data, 92, 0); - - if (attr->ia_valid & ATTR_SIZE) { - LSET(data, 0, attr->ia_size); - LSET(data, 8, 0); /* can't set anyway */ - } - - /* - * FIXME: check the conversion function it the correct one - * - * we can't set ctime but we might as well pass this to the server - * and let it ignore it. - */ - if (attr->ia_valid & ATTR_CTIME) { - nttime = smb_unixutc2ntutc(attr->ia_ctime); - LSET(data, 16, nttime); - } - if (attr->ia_valid & ATTR_ATIME) { - nttime = smb_unixutc2ntutc(attr->ia_atime); - LSET(data, 24, nttime); - } - if (attr->ia_valid & ATTR_MTIME) { - nttime = smb_unixutc2ntutc(attr->ia_mtime); - LSET(data, 32, nttime); - } - - if (attr->ia_valid & ATTR_UID) { - LSET(data, 40, attr->ia_uid); - } - if (attr->ia_valid & ATTR_GID) { - LSET(data, 48, attr->ia_gid); - } - - if (attr->ia_valid & ATTR_MODE) { - LSET(data, 84, attr->ia_mode); - } - - req->rq_trans2_command = TRANSACT2_SETPATHINFO; - req->rq_ldata = 100; - req->rq_data = data; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - -out_free: - smb_rput(req); -out: - return result; -} - - -/* - * Set the modify and access timestamps for a file. - * - * Incredibly enough, in all of SMB there is no message to allow - * setting both attributes and timestamps at once. - * - * Bugs Noted: - * (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message - * with info level 1 (INFO_STANDARD). - * (2) Win 95 seems not to support setting directory timestamps. - * (3) Under the core protocol apparently the only way to set the - * timestamp is to open and close the file. - */ -int -smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr) -{ - struct smb_sb_info *server = server_from_dentry(dentry); - struct inode *inode = dentry->d_inode; - int result; - - VERBOSE("setting %s/%s, open=%d\n", - DENTRY_PATH(dentry), smb_is_open(inode)); - - /* setting the time on a Win95 server fails (tridge) */ - if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 && - !(server->mnt->flags & SMB_MOUNT_WIN95)) { - if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY) - result = smb_proc_setattr_ext(server, inode, fattr); - else - result = smb_proc_setattr_trans2(server, dentry, fattr); - } else { - /* - * Fail silently on directories ... timestamp can't be set? - */ - result = 0; - if (S_ISREG(inode->i_mode)) { - /* - * Set the mtime by opening and closing the file. - * Note that the file is opened read-only, but this - * still allows us to set the date (tridge) - */ - result = -EACCES; - if (!smb_is_open(inode)) - smb_proc_open(server, dentry, SMB_O_RDONLY); - if (smb_is_open(inode)) { - inode->i_mtime = fattr->f_mtime; - result = smb_proc_close_inode(server, inode); - } - } - } - - return result; -} - -int -smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr) -{ - struct smb_sb_info *server = SMB_SB(dentry->d_sb); - int result; - char *p; - long unit; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 0))) - goto out; - - smb_setup_header(req, SMBdskattr, 0, 0); - if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0) - goto out_free; - p = SMB_VWV(req->rq_header); - unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT; - attr->f_blocks = WVAL(p, 0) * unit; - attr->f_bsize = SMB_ST_BLKSIZE; - attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit; - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -int -smb_proc_read_link(struct smb_sb_info *server, struct dentry *d, - char *buffer, int len) -{ - char *p, *param; - int result; - struct smb_request *req; - - DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d)); - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - - WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK); - DSET(param, 2, 0); - result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL); - if (result < 0) - goto out_free; - p = param + 6 + result; - - req->rq_trans2_command = TRANSACT2_QPATHINFO; - req->rq_ldata = 0; - req->rq_data = NULL; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", - ¶m[6], result, req->rq_rcls, req->rq_err); - - /* copy data up to the \0 or buffer length */ - result = len; - if (req->rq_ldata < len) - result = req->rq_ldata; - strncpy(buffer, req->rq_data, result); - -out_free: - smb_rput(req); -out: - return result; -} - - -/* - * Create a symlink object called dentry which points to oldpath. - * Samba does not permit dangling links but returns a suitable error message. - */ -int -smb_proc_symlink(struct smb_sb_info *server, struct dentry *d, - const char *oldpath) -{ - char *p, *param; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - - WSET(param, 0, SMB_SET_FILE_UNIX_LINK); - DSET(param, 2, 0); - result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL); - if (result < 0) - goto out_free; - p = param + 6 + result; - - req->rq_trans2_command = TRANSACT2_SETPATHINFO; - req->rq_ldata = strlen(oldpath) + 1; - req->rq_data = (char *) oldpath; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - - DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", - ¶m[6], result, req->rq_rcls, req->rq_err); - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -/* - * Create a hard link object called new_dentry which points to dentry. - */ -int -smb_proc_link(struct smb_sb_info *server, struct dentry *dentry, - struct dentry *new_dentry) -{ - char *p, *param; - int result; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, PAGE_SIZE))) - goto out; - param = req->rq_buffer; - - WSET(param, 0, SMB_SET_FILE_UNIX_HLINK); - DSET(param, 2, 0); - result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, - new_dentry, NULL); - if (result < 0) - goto out_free; - p = param + 6 + result; - - /* Grr, pointless separation of parameters and data ... */ - req->rq_data = p; - req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1, - dentry, NULL); - - req->rq_trans2_command = TRANSACT2_SETPATHINFO; - req->rq_lparm = p - param; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - - DEBUG1("for %s: result=%d, rcls=%d, err=%d\n", - ¶m[6], result, req->rq_rcls, req->rq_err); - result = 0; - -out_free: - smb_rput(req); -out: - return result; -} - -static int -smb_proc_query_cifsunix(struct smb_sb_info *server) -{ - int result; - int major, minor; - u64 caps; - char param[2]; - struct smb_request *req; - - result = -ENOMEM; - if (! (req = smb_alloc_request(server, 100))) - goto out; - - WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO); - - req->rq_trans2_command = TRANSACT2_QFSINFO; - req->rq_ldata = 0; - req->rq_data = NULL; - req->rq_lparm = 2; - req->rq_parm = param; - req->rq_flags = 0; - result = smb_add_request(req); - if (result < 0) - goto out_free; - - if (req->rq_ldata < 12) { - PARANOIA("Not enough data\n"); - goto out_free; - } - major = WVAL(req->rq_data, 0); - minor = WVAL(req->rq_data, 2); - - DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n", - major, minor); - /* FIXME: verify that we are ok with this major/minor? */ - - caps = LVAL(req->rq_data, 4); - DEBUG1("Server capabilities 0x%016llx\n", caps); - -out_free: - smb_rput(req); -out: - return result; -} - - -static void -install_ops(struct smb_ops *dst, struct smb_ops *src) -{ - memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC); -} - -/* < LANMAN2 */ -static struct smb_ops smb_ops_core = -{ - .read = smb_proc_read, - .write = smb_proc_write, - .readdir = smb_proc_readdir_short, - .getattr = smb_proc_getattr_core, - .truncate = smb_proc_trunc32, -}; - -/* LANMAN2, OS/2, others? */ -static struct smb_ops smb_ops_os2 = -{ - .read = smb_proc_read, - .write = smb_proc_write, - .readdir = smb_proc_readdir_long, - .getattr = smb_proc_getattr_trans2_std, - .truncate = smb_proc_trunc32, -}; - -/* Win95, and possibly some NetApp versions too */ -static struct smb_ops smb_ops_win95 = -{ - .read = smb_proc_read, /* does not support 12word readX */ - .write = smb_proc_write, - .readdir = smb_proc_readdir_long, - .getattr = smb_proc_getattr_95, - .truncate = smb_proc_trunc95, -}; - -/* Samba, NT4 and NT5 */ -static struct smb_ops smb_ops_winNT = -{ - .read = smb_proc_readX, - .write = smb_proc_writeX, - .readdir = smb_proc_readdir_long, - .getattr = smb_proc_getattr_trans2_all, - .truncate = smb_proc_trunc64, -}; - -/* Samba w/ unix extensions. Others? */ -static struct smb_ops smb_ops_unix = -{ - .read = smb_proc_readX, - .write = smb_proc_writeX, - .readdir = smb_proc_readdir_long, - .getattr = smb_proc_getattr_unix, - /* FIXME: core/ext/time setattr needs to be cleaned up! */ - /* .setattr = smb_proc_setattr_unix, */ - .truncate = smb_proc_trunc64, -}; - -/* Place holder until real ops are in place */ -static struct smb_ops smb_ops_null = -{ - .readdir = smb_proc_readdir_null, - .getattr = smb_proc_getattr_null, -}; - -void smb_install_null_ops(struct smb_ops *ops) -{ - install_ops(ops, &smb_ops_null); -} |