2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1999
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <asm/types.h>
25 #include <linux/smb_fs.h>
27 extern BOOL in_client;
28 extern pstring user_socket_options;
32 static pstring credentials;
33 static pstring my_netbios_name;
34 static pstring password;
35 static pstring username;
36 static pstring workgroup;
37 static pstring mpoint;
38 static pstring service;
39 static pstring options;
41 static struct in_addr dest_ip;
43 static int smb_port = 0;
46 static uid_t mount_uid;
47 static gid_t mount_gid;
49 static unsigned mount_fmask;
50 static unsigned mount_dmask;
51 static BOOL use_kerberos;
52 /* TODO: Add code to detect smbfs version in kernel */
53 static BOOL status32_smbfs = False;
54 static BOOL smbfs_has_unicode = False;
55 static BOOL smbfs_has_lfs = False;
57 static void usage(void);
59 static void exit_parent(int sig)
61 /* parent simply exits when child says go... */
65 static void daemonize(void)
70 signal( SIGTERM, exit_parent );
72 if ((child_pid = sys_fork()) < 0) {
73 DEBUG(0,("could not fork\n"));
78 j = waitpid( child_pid, &status, 0 );
80 if( EINTR == errno ) {
88 /* If we get here - the child exited with some error status */
89 if (WIFSIGNALED(status))
90 exit(128 + WTERMSIG(status));
92 exit(WEXITSTATUS(status));
95 signal( SIGTERM, SIG_DFL );
99 static void close_our_files(int client_fd)
102 struct rlimit limits;
104 getrlimit(RLIMIT_NOFILE,&limits);
105 for (i = 0; i< limits.rlim_max; i++) {
112 static void usr1_handler(int x)
118 /*****************************************************
119 return a connection to a server
120 *******************************************************/
121 static struct cli_state *do_connection(char *the_service)
124 struct nmb_name called, calling;
130 if (the_service[0] != '\\' || the_service[1] != '\\') {
135 pstrcpy(server, the_service+2);
136 share = strchr_m(server,'\\');
146 make_nmb_name(&calling, my_netbios_name, 0x0);
147 make_nmb_name(&called , server, 0x20);
151 if (have_ip) ip = dest_ip;
153 /* have to open a new connection */
154 if (!(c=cli_initialise()) || (cli_set_port(c, smb_port) != smb_port) ||
155 !NT_STATUS_IS_OK(cli_connect(c, server_n, &ip))) {
156 DEBUG(0,("%d: Connection to %s failed\n", sys_getpid(), server_n));
163 /* SPNEGO doesn't work till we get NTSTATUS error support */
164 /* But it is REQUIRED for kerberos authentication */
165 if(!use_kerberos) c->use_spnego = False;
167 /* The kernel doesn't yet know how to sign it's packets */
168 c->sign_info.allow_smb_signing = False;
170 /* Use kerberos authentication if specified */
171 c->use_kerberos = use_kerberos;
173 if (!cli_session_request(c, &calling, &called)) {
175 DEBUG(0,("%d: session request to %s failed (%s)\n",
176 sys_getpid(), called.name, cli_errstr(c)));
178 if ((p=strchr_m(called.name, '.'))) {
182 if (strcmp(called.name, "*SMBSERVER")) {
183 make_nmb_name(&called , "*SMBSERVER", 0x20);
189 DEBUG(4,("%d: session request ok\n", sys_getpid()));
191 if (!cli_negprot(c)) {
192 DEBUG(0,("%d: protocol negotiation failed\n", sys_getpid()));
198 char *pass = getpass("Password: ");
200 pstrcpy(password, pass);
204 /* This should be right for current smbfs. Future versions will support
205 large files as well as unicode and oplocks. */
206 c->capabilities &= ~(CAP_NT_SMBS | CAP_NT_FIND | CAP_LEVEL_II_OPLOCKS);
208 c->capabilities &= ~CAP_LARGE_FILES;
209 if (!smbfs_has_unicode)
210 c->capabilities &= ~CAP_UNICODE;
211 if (!status32_smbfs) {
212 c->capabilities &= ~CAP_STATUS32;
213 c->force_dos_errors = True;
216 if (!NT_STATUS_IS_OK(cli_session_setup(c, username,
217 password, strlen(password),
218 password, strlen(password),
220 /* if a password was not supplied then try again with a
222 if (password[0] || !username[0] ||
223 !NT_STATUS_IS_OK(cli_session_setup(c, "", "", 0, "", 0, workgroup))) {
224 DEBUG(0,("%d: session setup failed: %s\n",
225 sys_getpid(), cli_errstr(c)));
229 DEBUG(0,("Anonymous login successful\n"));
232 DEBUG(4,("%d: session setup ok\n", sys_getpid()));
234 if (!cli_send_tconX(c, share, "?????",
235 password, strlen(password)+1)) {
236 DEBUG(0,("%d: tree connect failed: %s\n",
237 sys_getpid(), cli_errstr(c)));
242 DEBUG(4,("%d: tconx ok\n", sys_getpid()));
250 /****************************************************************************
251 unmount smbfs (this is a bailout routine to clean up if a reconnect fails)
252 Code blatently stolen from smbumount.c
254 ****************************************************************************/
255 static void smb_umount(char *mount_point)
263 This routine only gets called to the scene of a disaster
264 to shoot the survivors... A connection that was working
265 has now apparently failed. We have an active mount point
266 (presumably) that we need to dump. If we get errors along
267 the way - make some noise, but we are already turning out
268 the lights to exit anyways...
270 if (umount(mount_point) != 0) {
271 DEBUG(0,("%d: Could not umount %s: %s\n",
272 sys_getpid(), mount_point, strerror(errno)));
276 if ((fd = open(MOUNTED"~", O_RDWR|O_CREAT|O_EXCL, 0600)) == -1) {
277 DEBUG(0,("%d: Can't get "MOUNTED"~ lock file", sys_getpid()));
283 if ((mtab = setmntent(MOUNTED, "r")) == NULL) {
284 DEBUG(0,("%d: Can't open " MOUNTED ": %s\n",
285 sys_getpid(), strerror(errno)));
289 #define MOUNTED_TMP MOUNTED".tmp"
291 if ((new_mtab = setmntent(MOUNTED_TMP, "w")) == NULL) {
292 DEBUG(0,("%d: Can't open " MOUNTED_TMP ": %s\n",
293 sys_getpid(), strerror(errno)));
298 while ((mnt = getmntent(mtab)) != NULL) {
299 if (strcmp(mnt->mnt_dir, mount_point) != 0) {
300 addmntent(new_mtab, mnt);
306 if (fchmod (fileno (new_mtab), S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) < 0) {
307 DEBUG(0,("%d: Error changing mode of %s: %s\n",
308 sys_getpid(), MOUNTED_TMP, strerror(errno)));
314 if (rename(MOUNTED_TMP, MOUNTED) < 0) {
315 DEBUG(0,("%d: Cannot rename %s to %s: %s\n",
316 sys_getpid(), MOUNTED, MOUNTED_TMP, strerror(errno)));
320 if (unlink(MOUNTED"~") == -1) {
321 DEBUG(0,("%d: Can't remove "MOUNTED"~", sys_getpid()));
328 * Call the smbfs ioctl to install a connection socket,
329 * then wait for a signal to reconnect. Note that we do
330 * not exit after open_sockets() or send_login() errors,
331 * as the smbfs mount would then have no way to recover.
333 static void send_fs_socket(char *the_service, char *mount_point, struct cli_state *c)
335 int fd, closed = 0, res = 1;
336 pid_t parentpid = getppid();
337 struct smb_conn_opt conn_options;
339 memset(&conn_options, 0, sizeof(conn_options));
342 if ((fd = open(mount_point, O_RDONLY)) < 0) {
343 DEBUG(0,("mount.smbfs[%d]: can't open %s\n",
344 sys_getpid(), mount_point));
348 conn_options.fd = c->fd;
349 conn_options.protocol = c->protocol;
350 conn_options.case_handling = SMB_CASE_DEFAULT;
351 conn_options.max_xmit = c->max_xmit;
352 conn_options.server_uid = c->vuid;
353 conn_options.tid = c->cnum;
354 conn_options.secmode = c->sec_mode;
355 conn_options.rawmode = 0;
356 conn_options.sesskey = c->sesskey;
357 conn_options.maxraw = 0;
358 conn_options.capabilities = c->capabilities;
359 conn_options.serverzone = c->serverzone/60;
361 res = ioctl(fd, SMB_IOC_NEWCONN, &conn_options);
363 DEBUG(0,("mount.smbfs[%d]: ioctl failed, res=%d\n",
370 /* Ok... We are going to kill the parent. Now
371 is the time to break the process group... */
373 /* Send a signal to the parent to terminate */
374 kill(parentpid, SIGTERM);
380 /* This looks wierd but we are only closing the userspace
381 side, the connection has already been passed to smbfs and
382 it has increased the usage count on the socket.
384 If we don't do this we will "leak" sockets and memory on
385 each reconnection we have to make. */
386 c->smb_rw_error = DO_NOT_DO_TDIS;
391 /* close the name cache so that close_our_files() doesn't steal its FD */
392 namecache_shutdown();
394 /* redirect stdout & stderr since we can't know that
395 the library functions we use are using DEBUG. */
396 if ( (fd = open("/dev/null", O_WRONLY)) < 0)
397 DEBUG(2,("mount.smbfs: can't open /dev/null\n"));
400 dup2(fd, STDOUT_FILENO);
401 dup2(fd, STDERR_FILENO);
405 /* here we are no longer interactive */
406 set_remote_machine_name("smbmount", False); /* sneaky ... */
407 setup_logging("mount.smbfs", False);
409 DEBUG(0, ("mount.smbfs: entering daemon mode for service %s, pid=%d\n", the_service, sys_getpid()));
414 /* Wait for a signal from smbfs ... but don't continue
415 until we actually get a new connection. */
417 CatchSignal(SIGUSR1, &usr1_handler);
419 DEBUG(2,("mount.smbfs[%d]: got signal, getting new socket\n", sys_getpid()));
420 c = do_connection(the_service);
424 smb_umount(mount_point);
425 DEBUG(2,("mount.smbfs[%d]: exit\n", sys_getpid()));
433 static void init_mount(void)
435 char mount_point[PATH_MAX+1];
442 if (realpath(mpoint, mount_point) == NULL) {
443 fprintf(stderr, "Could not resolve mount point %s\n", mpoint);
448 c = do_connection(service);
450 fprintf(stderr,"SMB connection failed\n");
455 Set up to return as a daemon child and wait in the parent
456 until the child say it's ready...
460 pstrcpy(svc2, service);
461 string_replace(svc2, '\\','/');
462 string_replace(svc2, ' ','_');
464 memset(args, 0, sizeof(args[0])*20);
467 args[i++] = "smbmnt";
469 args[i++] = mount_point;
477 slprintf(tmp, sizeof(tmp)-1, "%d", mount_uid);
479 args[i++] = smb_xstrdup(tmp);
482 slprintf(tmp, sizeof(tmp)-1, "%d", mount_gid);
484 args[i++] = smb_xstrdup(tmp);
487 slprintf(tmp, sizeof(tmp)-1, "0%o", mount_fmask);
489 args[i++] = smb_xstrdup(tmp);
492 slprintf(tmp, sizeof(tmp)-1, "0%o", mount_dmask);
494 args[i++] = smb_xstrdup(tmp);
501 if (sys_fork() == 0) {
504 asprintf(&smbmnt_path, "%s/smbmnt", dyn_BINDIR);
506 if (file_exist(smbmnt_path, NULL)) {
507 execv(smbmnt_path, args);
509 "smbfs/init_mount: execv of %s failed. Error was %s.",
510 smbmnt_path, strerror(errno));
512 execvp("smbmnt", args);
514 "smbfs/init_mount: execv of %s failed. Error was %s.",
515 "smbmnt", strerror(errno));
521 if (waitpid(-1, &status, 0) == -1) {
522 fprintf(stderr,"waitpid failed: Error was %s", strerror(errno) );
523 /* FIXME: do some proper error handling */
527 if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
528 fprintf(stderr,"smbmnt failed: %d\n", WEXITSTATUS(status));
529 /* FIXME: do some proper error handling */
531 } else if (WIFSIGNALED(status)) {
532 fprintf(stderr, "smbmnt killed by signal %d\n", WTERMSIG(status));
536 /* Ok... This is the rubicon for that mount point... At any point
537 after this, if the connections fail and can not be reconstructed
538 for any reason, we will have to unmount the mount point. There
539 is no exit from the next call...
541 send_fs_socket(service, mount_point, c);
545 /****************************************************************************
546 get a password from a a file or file descriptor
547 exit on failure (from smbclient, move to libsmb or shared .c file?)
548 ****************************************************************************/
549 static void get_password_file(void)
553 BOOL close_it = False;
557 if ((p = getenv("PASSWD_FD")) != NULL) {
558 pstrcpy(spec, "descriptor ");
560 sscanf(p, "%d", &fd);
562 } else if ((p = getenv("PASSWD_FILE")) != NULL) {
563 fd = sys_open(p, O_RDONLY, 0);
566 fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
567 spec, strerror(errno));
573 for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
574 p && p - pass < sizeof(pass);) {
575 switch (read(fd, p, 1)) {
577 if (*p != '\n' && *p != '\0') {
578 *++p = '\0'; /* advance p, and null-terminate pass */
583 *p = '\0'; /* null-terminate it, just in case... */
584 p = NULL; /* then force the loop condition to become false */
587 fprintf(stderr, "Error reading password from file %s: %s\n",
588 spec, "empty password\n");
593 fprintf(stderr, "Error reading password from file %s: %s\n",
594 spec, strerror(errno));
598 pstrcpy(password, pass);
603 /****************************************************************************
604 get username and password from a credentials file
605 exit on failure (from smbclient, move to libsmb or shared .c file?)
606 ****************************************************************************/
607 static void read_credentials_file(char *filename)
612 char *ptr, *val, *param;
614 if ((auth=sys_fopen(filename, "r")) == NULL)
616 /* fail if we can't open the credentials file */
617 DEBUG(0,("ERROR: Unable to open credentials file!\n"));
623 /* get a line from the file */
624 if (!fgets (buf, sizeof(buf), auth))
628 if ((len) && (buf[len-1]=='\n'))
636 /* break up the line into parameter & value.
637 will need to eat a little whitespace possibly */
639 if (!(ptr = strchr (buf, '=')))
644 /* eat leading white space */
645 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
648 if (strwicmp("password", param) == 0)
650 pstrcpy(password, val);
653 else if (strwicmp("username", param) == 0) {
654 pstrcpy(username, val);
657 memset(buf, 0, sizeof(buf));
663 /****************************************************************************
665 ****************************************************************************/
666 static void usage(void)
668 printf("Usage: mount.smbfs service mountpoint [-o options,...]\n");
670 printf("Version %s\n\n",SAMBA_VERSION_STRING);
672 printf("Please be aware that smbfs is deprecated in favor of "
677 username=<arg> SMB username\n\
678 password=<arg> SMB password\n\
679 credentials=<filename> file with username/password\n\
680 krb use kerberos (active directory)\n\
681 netbiosname=<arg> source NetBIOS name\n\
682 uid=<arg> mount uid or username\n\
683 gid=<arg> mount gid or groupname\n\
684 port=<arg> remote SMB port number\n\
685 fmask=<arg> file umask\n\
686 dmask=<arg> directory umask\n\
687 debug=<arg> debug level\n\
688 ip=<arg> destination host or IP address\n\
689 workgroup=<arg> workgroup on destination\n\
690 sockopt=<arg> TCP socket options\n\
691 scope=<arg> NetBIOS scope\n\
692 iocharset=<arg> Linux charset (iso8859-1, utf8)\n\
693 codepage=<arg> server codepage (cp850)\n\
694 unicode use unicode when communicating with server\n\
695 lfs large file system support\n\
696 ttl=<arg> dircache time to live\n\
697 guest don't prompt for a password\n\
698 ro mount read-only\n\
699 rw mount read-write\n\
701 This command is designed to be run from within /bin/mount by giving\n\
702 the option '-t smbfs'. For example:\n\
703 mount -t smbfs -o username=tridge,password=foobar //fjall/test /data/test\n\
708 /****************************************************************************
709 Argument parsing for mount.smbfs interface
710 mount will call us like this:
711 mount.smbfs device mountpoint -o <options>
713 <options> is never empty, containing at least rw or ro
714 ****************************************************************************/
715 static void parse_mount_smb(int argc, char **argv)
723 /* FIXME: This function can silently fail if the arguments are
724 * not in the expected order.
726 > The arguments syntax of smbmount 2.2.3a (smbfs of Debian stable)
727 > requires that one gives "-o" before further options like username=...
728 > . Without -o, the username=.. setting is *silently* ignored. I've
729 > spent about an hour trying to find out why I couldn't log in now..
734 if (argc < 2 || argv[1][0] == '-') {
739 pstrcpy(service, argv[1]);
740 pstrcpy(mpoint, argv[2]);
742 /* Convert any '/' characters in the service name to
744 string_replace(service, '/','\\');
748 opt = getopt(argc, argv, "o:");
757 * option parsing from nfsmount.c (util-linux-2.9u)
759 for (opts = strtok(optarg, ","); opts; opts = strtok(NULL, ",")) {
760 DEBUG(3, ("opts: %s\n", opts));
761 if ((opteq = strchr_m(opts, '='))) {
762 val = atoi(opteq + 1);
765 if (!strcmp(opts, "username") ||
766 !strcmp(opts, "logon")) {
769 pstrcpy(username,opteq+1);
770 if ((lp=strchr_m(username,'%'))) {
772 pstrcpy(password,lp+1);
774 memset(strchr_m(opteq+1,'%')+1,'X',strlen(password));
776 if ((lp=strchr_m(username,'/'))) {
778 pstrcpy(workgroup,lp+1);
780 } else if(!strcmp(opts, "passwd") ||
781 !strcmp(opts, "password")) {
782 pstrcpy(password,opteq+1);
784 memset(opteq+1,'X',strlen(password));
785 } else if(!strcmp(opts, "credentials")) {
786 pstrcpy(credentials,opteq+1);
787 } else if(!strcmp(opts, "netbiosname")) {
788 pstrcpy(my_netbios_name,opteq+1);
789 } else if(!strcmp(opts, "uid")) {
790 mount_uid = nametouid(opteq+1);
791 } else if(!strcmp(opts, "gid")) {
792 mount_gid = nametogid(opteq+1);
793 } else if(!strcmp(opts, "port")) {
795 } else if(!strcmp(opts, "fmask")) {
796 mount_fmask = strtol(opteq+1, NULL, 8);
797 } else if(!strcmp(opts, "dmask")) {
798 mount_dmask = strtol(opteq+1, NULL, 8);
799 } else if(!strcmp(opts, "debug")) {
801 } else if(!strcmp(opts, "ip")) {
802 dest_ip = *interpret_addr2(opteq+1);
803 if (is_zero_ip(dest_ip)) {
804 fprintf(stderr,"Can't resolve address %s\n", opteq+1);
808 } else if(!strcmp(opts, "workgroup")) {
809 pstrcpy(workgroup,opteq+1);
810 } else if(!strcmp(opts, "sockopt")) {
811 pstrcpy(user_socket_options,opteq+1);
812 } else if(!strcmp(opts, "scope")) {
813 set_global_scope(opteq+1);
815 slprintf(p, sizeof(pstring) - (p - options) - 1, "%s=%s,", opts, opteq+1);
820 if(!strcmp(opts, "nocaps")) {
821 fprintf(stderr, "Unhandled option: %s\n", opteq+1);
823 } else if(!strcmp(opts, "guest")) {
826 } else if(!strcmp(opts, "krb")) {
831 fprintf(stderr, "Warning: kerberos support will only work for samba servers\n");
833 fprintf(stderr,"No kerberos support compiled in\n");
836 } else if(!strcmp(opts, "rw")) {
838 } else if(!strcmp(opts, "ro")) {
840 } else if(!strcmp(opts, "unicode")) {
841 smbfs_has_unicode = True;
842 } else if(!strcmp(opts, "lfs")) {
843 smbfs_has_lfs = True;
845 strncpy(p, opts, sizeof(pstring) - (p - options) - 1);
859 *(p-1) = 0; /* remove trailing , */
860 DEBUG(3,("passthrough options '%s'\n", options));
864 /****************************************************************************
866 ****************************************************************************/
867 int main(int argc,char *argv[])
875 /* here we are interactive, even if run from autofs */
876 setup_logging("mount.smbfs",True);
878 #if 0 /* JRA - Urban says not needed ? */
879 /* CLI_FORCE_ASCII=false makes smbmount negotiate unicode. The default
880 is to not announce any unicode capabilities as current smbfs does
882 p = getenv("CLI_FORCE_ASCII");
883 if (p && !strcmp(p, "false"))
884 unsetenv("CLI_FORCE_ASCII");
886 setenv("CLI_FORCE_ASCII", "true", 1);
889 in_client = True; /* Make sure that we tell lp_load we are */
891 if (getenv("USER")) {
892 pstrcpy(username,getenv("USER"));
894 if ((p=strchr_m(username,'%'))) {
896 pstrcpy(password,p+1);
898 memset(strchr_m(getenv("USER"),'%')+1,'X',strlen(password));
900 strupper_m(username);
903 if (getenv("PASSWD")) {
904 pstrcpy(password,getenv("PASSWD"));
908 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
913 if (*username == 0 && getenv("LOGNAME")) {
914 pstrcpy(username,getenv("LOGNAME"));
917 if (!lp_load(dyn_CONFIGFILE,True,False,False,True)) {
918 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
922 parse_mount_smb(argc, argv);
924 if (use_kerberos && !got_user) {
928 if (*credentials != 0) {
929 read_credentials_file(credentials);
932 DEBUG(3,("mount.smbfs started (version %s)\n", SAMBA_VERSION_STRING));
934 if (*workgroup == 0) {
935 pstrcpy(workgroup,lp_workgroup());
939 if (!*my_netbios_name) {
940 pstrcpy(my_netbios_name, myhostname());
942 strupper_m(my_netbios_name);