2 Mount helper utility for Linux CIFS VFS (virtual filesystem) client
3 Copyright (C) 2003,2008 Steve French (sfrench@us.ibm.com)
4 Copyright (C) 2008 Jeremy Allison (jra@samba.org)
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 3 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, see <http://www.gnu.org/licenses/>. */
29 #include <sys/types.h>
30 #include <sys/mount.h>
32 #include <sys/utsname.h>
33 #include <sys/socket.h>
34 #include <arpa/inet.h>
43 #define MOUNT_CIFS_VERSION_MAJOR "1"
44 #define MOUNT_CIFS_VERSION_MINOR "11"
46 #ifndef MOUNT_CIFS_VENDOR_SUFFIX
48 #include "include/version.h"
49 #ifdef SAMBA_VERSION_VENDOR_SUFFIX
50 #define MOUNT_CIFS_VENDOR_SUFFIX "-"SAMBA_VERSION_OFFICIAL_STRING"-"SAMBA_VERSION_VENDOR_SUFFIX
52 #define MOUNT_CIFS_VENDOR_SUFFIX "-"SAMBA_VERSION_OFFICIAL_STRING
53 #endif /* SAMBA_VERSION_OFFICIAL_STRING and SAMBA_VERSION_VENDOR_SUFFIX */
55 #define MOUNT_CIFS_VENDOR_SUFFIX ""
56 #endif /* _SAMBA_BUILD_ */
57 #endif /* MOUNT_CIFS_VENDOR_SUFFIX */
67 #define MAX_UNC_LEN 1024
69 #define CONST_DISCARD(type, ptr) ((type) ((void *) (ptr)))
72 #define SAFE_FREE(x) do { if ((x) != NULL) {free(x); x=NULL;} } while(0)
75 #define MOUNT_PASSWD_SIZE 64
76 #define DOMAIN_SIZE 64
78 const char *thisprogram
;
80 static int got_password
= 0;
81 static int got_user
= 0;
82 static int got_domain
= 0;
83 static int got_ip
= 0;
84 static int got_unc
= 0;
85 static int got_uid
= 0;
86 static int got_gid
= 0;
87 static char * user_name
= NULL
;
88 static char * mountpassword
= NULL
;
89 char * domain_name
= NULL
;
90 char * prefixpath
= NULL
;
92 /* glibc doesn't have strlcpy, strlcat. Ensure we do. JRA. We
93 * don't link to libreplace so need them here. */
95 /* like strncpy but does not 0 fill the buffer and always null
96 * terminates. bufsize is the size of the destination buffer */
97 size_t strlcpy(char *d
, const char *s
, size_t bufsize
)
99 size_t len
= strlen(s
);
101 if (bufsize
<= 0) return 0;
102 if (len
>= bufsize
) len
= bufsize
-1;
108 /* like strncat but does not 0 fill the buffer and always null
109 * terminates. bufsize is the length of the buffer, which should
110 * be one more than the maximum resulting string length */
111 size_t strlcat(char *d
, const char *s
, size_t bufsize
)
113 size_t len1
= strlen(d
);
114 size_t len2
= strlen(s
);
115 size_t ret
= len1
+ len2
;
117 if (len1
+len2
>= bufsize
) {
118 len2
= bufsize
- (len1
+1);
121 memcpy(d
+len1
, s
, len2
);
130 open nofollow - avoid symlink exposure?
131 get owner of dir see if matches self or if root
132 call system(umount argv) etc.
136 static char * check_for_domain(char **);
139 static void mount_cifs_usage(void)
141 printf("\nUsage: %s <remotetarget> <dir> -o <options>\n", thisprogram
);
142 printf("\nMount the remote target, specified as a UNC name,");
143 printf(" to a local directory.\n\nOptions:\n");
144 printf("\tuser=<arg>\n\tpass=<arg>\n\tdom=<arg>\n");
145 printf("\nLess commonly used options:");
146 printf("\n\tcredentials=<filename>,guest,perm,noperm,setuids,nosetuids,rw,ro,");
147 printf("\n\tsep=<char>,iocharset=<codepage>,suid,nosuid,exec,noexec,serverino,");
148 printf("\n\tmapchars,nomapchars,nolock,servernetbiosname=<SRV_RFC1001NAME>");
149 printf("\n\tdirectio,nounix,cifsacl,sec=<authentication mechanism>,sign");
150 printf("\n\nOptions not needed for servers supporting CIFS Unix extensions");
151 printf("\n\t(e.g. unneeded for mounts to most Samba versions):");
152 printf("\n\tuid=<uid>,gid=<gid>,dir_mode=<mode>,file_mode=<mode>,sfu");
153 printf("\n\nRarely used options:");
154 printf("\n\tport=<tcpport>,rsize=<size>,wsize=<size>,unc=<unc_name>,ip=<ip_address>,");
155 printf("\n\tdev,nodev,nouser_xattr,netbiosname=<OUR_RFC1001NAME>,hard,soft,intr,");
156 printf("\n\tnointr,ignorecase,noposixpaths,noacl,prefixpath=<path>,nobrl");
157 printf("\n\tin6_addr");
158 printf("\n\nOptions are described in more detail in the manual page");
159 printf("\n\tman 8 mount.cifs\n");
160 printf("\nTo display the version number of the mount helper:");
161 printf("\n\t%s -V\n",thisprogram
);
164 memset(mountpassword
,0,MOUNT_PASSWD_SIZE
);
166 SAFE_FREE(mountpassword
);
170 /* caller frees username if necessary */
171 static char * getusername(void) {
172 char *username
= NULL
;
173 struct passwd
*password
= getpwuid(getuid());
176 username
= password
->pw_name
;
181 static char * parse_cifs_url(char * unc_name
)
183 printf("\nMounting cifs URL not implemented yet. Attempt to mount %s\n",unc_name
);
187 static int open_cred_file(char * file_name
)
193 fs
= fopen(file_name
,"r");
196 line_buf
= (char *)malloc(4096);
197 if(line_buf
== NULL
) {
202 while(fgets(line_buf
,4096,fs
)) {
203 /* parse line from credential file */
205 /* eat leading white space */
206 for(i
=0;i
<4086;i
++) {
207 if((line_buf
[i
] != ' ') && (line_buf
[i
] != '\t'))
209 /* if whitespace - skip past it */
211 if (strncasecmp("username",line_buf
+i
,8) == 0) {
212 temp_val
= strchr(line_buf
+ i
,'=');
214 /* go past equals sign */
216 for(length
= 0;length
<4087;length
++) {
217 if ((temp_val
[length
] == '\n')
218 || (temp_val
[length
] == '\0')) {
223 printf("mount.cifs failed due to malformed username in credentials file");
224 memset(line_buf
,0,4096);
226 memset(mountpassword
,0,MOUNT_PASSWD_SIZE
);
231 user_name
= (char *)calloc(1 + length
,1);
232 /* BB adding free of user_name string before exit,
233 not really necessary but would be cleaner */
234 strlcpy(user_name
,temp_val
, length
+1);
237 } else if (strncasecmp("password",line_buf
+i
,8) == 0) {
238 temp_val
= strchr(line_buf
+i
,'=');
240 /* go past equals sign */
242 for(length
= 0;length
<MOUNT_PASSWD_SIZE
+1;length
++) {
243 if ((temp_val
[length
] == '\n')
244 || (temp_val
[length
] == '\0')) {
248 if(length
> MOUNT_PASSWD_SIZE
) {
249 printf("mount.cifs failed: password in credentials file too long\n");
250 memset(line_buf
,0, 4096);
253 if(mountpassword
== NULL
) {
254 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
256 memset(mountpassword
,0,MOUNT_PASSWD_SIZE
);
258 strlcpy(mountpassword
,temp_val
,MOUNT_PASSWD_SIZE
+1);
263 } else if (strncasecmp("domain",line_buf
+i
,6) == 0) {
264 temp_val
= strchr(line_buf
+i
,'=');
266 /* go past equals sign */
269 printf("\nDomain %s\n",temp_val
);
270 for(length
= 0;length
<DOMAIN_SIZE
+1;length
++) {
271 if ((temp_val
[length
] == '\n')
272 || (temp_val
[length
] == '\0')) {
276 if(length
> DOMAIN_SIZE
) {
277 printf("mount.cifs failed: domain in credentials file too long\n");
280 if(domain_name
== NULL
) {
281 domain_name
= (char *)calloc(DOMAIN_SIZE
+1,1);
283 memset(domain_name
,0,DOMAIN_SIZE
);
285 strlcpy(domain_name
,temp_val
,DOMAIN_SIZE
+1);
295 memset(line_buf
,0,4096);
301 static int get_password_from_file(int file_descript
, char * filename
)
307 if(mountpassword
== NULL
)
308 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
310 memset(mountpassword
, 0, MOUNT_PASSWD_SIZE
);
312 if (mountpassword
== NULL
) {
313 printf("malloc failed\n");
317 if(filename
!= NULL
) {
318 file_descript
= open(filename
, O_RDONLY
);
319 if(file_descript
< 0) {
320 printf("mount.cifs failed. %s attempting to open password file %s\n",
321 strerror(errno
),filename
);
325 /* else file already open and fd provided */
327 for(i
=0;i
<MOUNT_PASSWD_SIZE
;i
++) {
328 rc
= read(file_descript
,&c
,1);
330 printf("mount.cifs failed. Error %s reading password file\n",strerror(errno
));
331 memset(mountpassword
,0,MOUNT_PASSWD_SIZE
);
333 close(file_descript
);
336 if(mountpassword
[0] == 0) {
338 printf("\nWarning: null password used since cifs password file empty");
341 } else /* read valid character */ {
342 if((c
== 0) || (c
== '\n')) {
345 mountpassword
[i
] = c
;
348 if((i
== MOUNT_PASSWD_SIZE
) && (verboseflag
)) {
349 printf("\nWarning: password longer than %d characters specified in cifs password file",
353 if(filename
!= NULL
) {
354 close(file_descript
);
360 static int parse_options(char ** optionsp
, int * filesys_flags
)
363 char * percent_char
= NULL
;
365 char * next_keyword
= NULL
;
373 if (!optionsp
|| !*optionsp
)
378 printf("parsing options: %s\n", data
);
380 /* BB fixme check for separator override BB */
384 snprintf(user
,sizeof(user
),"%u",getuid());
386 snprintf(group
,sizeof(group
),"%u",getgid());
389 /* while ((data = strsep(&options, ",")) != NULL) { */
390 while(data
!= NULL
) {
391 /* check if ends with trailing comma */
395 /* format is keyword=value,keyword2=value2,keyword3=value3 etc.) */
396 /* data = next keyword */
397 /* value = next value ie stuff after equal sign */
399 next_keyword
= strchr(data
,','); /* BB handle sep= */
401 /* temporarily null terminate end of keyword=value pair */
405 /* temporarily null terminate keyword to make keyword and value distinct */
406 if ((value
= strchr(data
, '=')) != NULL
) {
411 if (strncmp(data
, "users",5) == 0) {
412 if(!value
|| !*value
) {
415 } else if (strncmp(data
, "user_xattr",10) == 0) {
416 /* do nothing - need to skip so not parsed as user name */
417 } else if (strncmp(data
, "user", 4) == 0) {
419 if (!value
|| !*value
) {
420 if(data
[4] == '\0') {
422 printf("\nskipping empty user mount parameter\n");
423 /* remove the parm since it would otherwise be confusing
424 to the kernel code which would think it was a real username */
427 printf("username specified with no parameter\n");
428 return 1; /* needs_arg; */
431 if (strnlen(value
, 260) < 260) {
433 percent_char
= strchr(value
,'%');
436 if(mountpassword
== NULL
)
437 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
440 printf("\nmount.cifs warning - password specified twice\n");
443 strlcpy(mountpassword
, percent_char
,MOUNT_PASSWD_SIZE
+1);
444 /* remove password from username */
445 while(*percent_char
!= 0) {
451 /* this is only case in which the user
452 name buf is not malloc - so we have to
453 check for domain name embedded within
454 the user name here since the later
455 call to check_for_domain will not be
457 domain_name
= check_for_domain(&value
);
459 printf("username too long\n");
463 } else if (strncmp(data
, "pass", 4) == 0) {
464 if (!value
|| !*value
) {
466 printf("\npassword specified twice, ignoring second\n");
469 } else if (strnlen(value
, 17) < 17) {
471 printf("\nmount.cifs warning - password specified twice\n");
474 printf("password too long\n");
477 } else if (strncmp(data
, "sec", 3) == 0) {
479 if (!strcmp(value
, "none"))
482 } else if (strncmp(data
, "ip", 2) == 0) {
483 if (!value
|| !*value
) {
484 printf("target ip address argument missing");
485 } else if (strnlen(value
, 35) < 35) {
487 printf("ip address %s override specified\n",value
);
490 printf("ip address too long\n");
493 } else if ((strncmp(data
, "unc", 3) == 0)
494 || (strncmp(data
, "target", 6) == 0)
495 || (strncmp(data
, "path", 4) == 0)) {
496 if (!value
|| !*value
) {
497 printf("invalid path to network resource\n");
498 return 1; /* needs_arg; */
499 } else if(strnlen(value
,5) < 5) {
500 printf("UNC name too short");
503 if (strnlen(value
, 300) < 300) {
505 if (strncmp(value
, "//", 2) == 0) {
507 printf("unc name specified twice, ignoring second\n");
510 } else if (strncmp(value
, "\\\\", 2) != 0) {
511 printf("UNC Path does not begin with // or \\\\ \n");
515 printf("unc name specified twice, ignoring second\n");
520 printf("CIFS: UNC name too long\n");
523 } else if ((strncmp(data
, "domain", 3) == 0)
524 || (strncmp(data
, "workgroup", 5) == 0)) {
525 if (!value
|| !*value
) {
526 printf("CIFS: invalid domain name\n");
527 return 1; /* needs_arg; */
529 if (strnlen(value
, 65) < 65) {
532 printf("domain name too long\n");
535 } else if (strncmp(data
, "cred", 4) == 0) {
536 if (value
&& *value
) {
537 rc
= open_cred_file(value
);
539 printf("error %d opening credential file %s\n",rc
, value
);
543 printf("invalid credential file name specified\n");
546 } else if (strncmp(data
, "uid", 3) == 0) {
547 if (value
&& *value
) {
549 if (!isdigit(*value
)) {
552 if (!(pw
= getpwnam(value
))) {
553 printf("bad user name \"%s\"\n", value
);
556 snprintf(user
, sizeof(user
), "%u", pw
->pw_uid
);
558 strlcpy(user
,value
,sizeof(user
));
562 } else if (strncmp(data
, "gid", 3) == 0) {
563 if (value
&& *value
) {
565 if (!isdigit(*value
)) {
568 if (!(gr
= getgrnam(value
))) {
569 printf("bad group name \"%s\"\n", value
);
572 snprintf(group
, sizeof(group
), "%u", gr
->gr_gid
);
574 strlcpy(group
,value
,sizeof(group
));
578 /* fmask and dmask synonyms for people used to smbfs syntax */
579 } else if (strcmp(data
, "file_mode") == 0 || strcmp(data
, "fmask")==0) {
580 if (!value
|| !*value
) {
581 printf ("Option '%s' requires a numerical argument\n", data
);
585 if (value
[0] != '0') {
586 printf ("WARNING: '%s' not expressed in octal.\n", data
);
589 if (strcmp (data
, "fmask") == 0) {
590 printf ("WARNING: CIFS mount option 'fmask' is deprecated. Use 'file_mode' instead.\n");
591 data
= "file_mode"; /* BB fix this */
593 } else if (strcmp(data
, "dir_mode") == 0 || strcmp(data
, "dmask")==0) {
594 if (!value
|| !*value
) {
595 printf ("Option '%s' requires a numerical argument\n", data
);
599 if (value
[0] != '0') {
600 printf ("WARNING: '%s' not expressed in octal.\n", data
);
603 if (strcmp (data
, "dmask") == 0) {
604 printf ("WARNING: CIFS mount option 'dmask' is deprecated. Use 'dir_mode' instead.\n");
607 /* the following eight mount options should be
608 stripped out from what is passed into the kernel
609 since these eight options are best passed as the
610 mount flags rather than redundantly to the kernel
611 and could generate spurious warnings depending on the
612 level of the corresponding cifs vfs kernel code */
613 } else if (strncmp(data
, "nosuid", 6) == 0) {
614 *filesys_flags
|= MS_NOSUID
;
615 } else if (strncmp(data
, "suid", 4) == 0) {
616 *filesys_flags
&= ~MS_NOSUID
;
617 } else if (strncmp(data
, "nodev", 5) == 0) {
618 *filesys_flags
|= MS_NODEV
;
619 } else if ((strncmp(data
, "nobrl", 5) == 0) ||
620 (strncmp(data
, "nolock", 6) == 0)) {
621 *filesys_flags
&= ~MS_MANDLOCK
;
622 } else if (strncmp(data
, "dev", 3) == 0) {
623 *filesys_flags
&= ~MS_NODEV
;
624 } else if (strncmp(data
, "noexec", 6) == 0) {
625 *filesys_flags
|= MS_NOEXEC
;
626 } else if (strncmp(data
, "exec", 4) == 0) {
627 *filesys_flags
&= ~MS_NOEXEC
;
628 } else if (strncmp(data
, "guest", 5) == 0) {
630 } else if (strncmp(data
, "ro", 2) == 0) {
631 *filesys_flags
|= MS_RDONLY
;
632 } else if (strncmp(data
, "rw", 2) == 0) {
633 *filesys_flags
&= ~MS_RDONLY
;
634 } else if (strncmp(data
, "remount", 7) == 0) {
635 *filesys_flags
|= MS_REMOUNT
;
636 } /* else if (strnicmp(data, "port", 4) == 0) {
637 if (value && *value) {
639 simple_strtoul(value, &value, 0);
641 } else if (strnicmp(data, "rsize", 5) == 0) {
642 if (value && *value) {
644 simple_strtoul(value, &value, 0);
646 } else if (strnicmp(data, "wsize", 5) == 0) {
647 if (value && *value) {
649 simple_strtoul(value, &value, 0);
651 } else if (strnicmp(data, "version", 3) == 0) {
653 printf("CIFS: Unknown mount option %s\n",data);
654 } */ /* nothing to do on those four mount options above.
655 Just pass to kernel and ignore them here */
657 /* Copy (possibly modified) option to out */
658 word_len
= strlen(data
);
660 word_len
+= 1 + strlen(value
);
662 out
= (char *)realloc(out
, out_len
+ word_len
+ 2);
669 strlcat(out
, ",", out_len
+ word_len
+ 2);
674 snprintf(out
+ out_len
, word_len
+ 1, "%s=%s", data
, value
);
676 snprintf(out
+ out_len
, word_len
+ 1, "%s", data
);
677 out_len
= strlen(out
);
683 /* special-case the uid and gid */
685 word_len
= strlen(user
);
687 out
= (char *)realloc(out
, out_len
+ word_len
+ 6);
694 strlcat(out
, ",", out_len
+ word_len
+ 6);
697 snprintf(out
+ out_len
, word_len
+ 5, "uid=%s", user
);
698 out_len
= strlen(out
);
701 word_len
= strlen(group
);
703 out
= (char *)realloc(out
, out_len
+ 1 + word_len
+ 6);
710 strlcat(out
, ",", out_len
+ word_len
+ 6);
713 snprintf(out
+ out_len
, word_len
+ 5, "gid=%s", group
);
714 out_len
= strlen(out
);
717 SAFE_FREE(*optionsp
);
722 /* replace all (one or more) commas with double commas */
723 static void check_for_comma(char ** ppasswrd
)
728 int number_of_commas
= 0;
743 if(number_of_commas
== 0)
745 if(number_of_commas
> MOUNT_PASSWD_SIZE
) {
746 /* would otherwise overflow the mount options buffer */
747 printf("\nInvalid password. Password contains too many commas.\n");
751 new_pass_buf
= (char *)malloc(len
+number_of_commas
+1);
752 if(new_pass_buf
== NULL
)
755 for(i
=0,j
=0;i
<len
;i
++,j
++) {
756 new_pass_buf
[j
] = pass
[i
];
759 new_pass_buf
[j
] = pass
[i
];
762 new_pass_buf
[len
+number_of_commas
] = 0;
764 SAFE_FREE(*ppasswrd
);
765 *ppasswrd
= new_pass_buf
;
770 /* Usernames can not have backslash in them and we use
771 [BB check if usernames can have forward slash in them BB]
772 backslash as domain\user separator character
774 static char * check_for_domain(char **ppuser
)
776 char * original_string
;
786 original_string
= *ppuser
;
788 if (original_string
== NULL
)
791 original_len
= strlen(original_string
);
793 usernm
= strchr(*ppuser
,'/');
794 if (usernm
== NULL
) {
795 usernm
= strchr(*ppuser
,'\\');
801 printf("Domain name specified twice. Username probably malformed\n");
807 if (domainnm
[0] != 0) {
810 printf("null domain\n");
812 len
= strlen(domainnm
);
813 /* reset domainm to new buffer, and copy
814 domain name into it */
815 domainnm
= (char *)malloc(len
+1);
819 strlcpy(domainnm
,*ppuser
,len
+1);
821 /* move_string(*ppuser, usernm+1) */
822 len
= strlen(usernm
+1);
824 if(len
>= original_len
) {
825 /* should not happen */
829 for(i
=0;i
<original_len
;i
++) {
831 original_string
[i
] = usernm
[i
+1];
832 else /* stuff with commas to remove last parm */
833 original_string
[i
] = ',';
836 /* BB add check for more than one slash?
844 /* replace all occurances of "from" in a string with "to" */
845 static void replace_char(char *string
, char from
, char to
, int maxlen
)
847 char *lastchar
= string
+ maxlen
;
849 string
= strchr(string
, from
);
852 if (string
>= lastchar
)
858 /* Note that caller frees the returned buffer if necessary */
859 static char * parse_server(char ** punc_name
)
861 char * unc_name
= *punc_name
;
862 int length
= strnlen(unc_name
, MAX_UNC_LEN
);
864 char * ipaddress_string
= NULL
;
865 struct hostent
* host_entry
= NULL
;
866 struct in_addr server_ipaddr
;
868 if(length
> (MAX_UNC_LEN
- 1)) {
869 printf("mount error: UNC name too long");
872 if (strncasecmp("cifs://",unc_name
,7) == 0)
873 return parse_cifs_url(unc_name
+7);
874 if (strncasecmp("smb://",unc_name
,6) == 0) {
875 return parse_cifs_url(unc_name
+6);
879 /* BB add code to find DFS root here */
880 printf("\nMounting the DFS root for domain not implemented yet\n");
883 if(strncmp(unc_name
,"//",2) && strncmp(unc_name
,"\\\\",2)) {
884 /* check for nfs syntax ie server:share */
885 share
= strchr(unc_name
,':');
887 *punc_name
= (char *)malloc(length
+3);
888 if(*punc_name
== NULL
) {
889 /* put the original string back if
891 *punc_name
= unc_name
;
895 strlcpy((*punc_name
)+2,unc_name
,length
+1);
897 unc_name
= *punc_name
;
898 unc_name
[length
+2] = 0;
899 goto continue_unc_parsing
;
901 printf("mount error: improperly formatted UNC name.");
902 printf(" %s does not begin with \\\\ or //\n",unc_name
);
906 continue_unc_parsing
:
911 /* allow for either delimiter between host and sharename */
912 if ((share
= strpbrk(unc_name
, "/\\"))) {
913 *share
= 0; /* temporarily terminate the string */
916 host_entry
= gethostbyname(unc_name
);
918 *(share
- 1) = '/'; /* put delimiter back */
920 /* we don't convert the prefixpath delimiters since '\\' is a valid char in posix paths */
921 if ((prefixpath
= strpbrk(share
, "/\\"))) {
922 *prefixpath
= 0; /* permanently terminate the string */
923 if (!strlen(++prefixpath
))
924 prefixpath
= NULL
; /* this needs to be done explicitly */
928 printf("ip address specified explicitly\n");
931 if(host_entry
== NULL
) {
932 printf("mount error: could not find target server. TCP name %s not found\n", unc_name
);
935 /* BB should we pass an alternate version of the share name as Unicode */
936 /* BB what about ipv6? BB */
937 /* BB add retries with alternate servers in list */
939 memcpy(&server_ipaddr
.s_addr
, host_entry
->h_addr
, 4);
941 ipaddress_string
= inet_ntoa(server_ipaddr
);
942 if(ipaddress_string
== NULL
) {
943 printf("mount error: could not get valid ip address for target server\n");
946 return ipaddress_string
;
949 /* BB add code to find DFS root (send null path on get DFS Referral to specified server here */
950 printf("Mounting the DFS root for a particular server not implemented yet\n");
957 static struct option longopts
[] = {
958 { "all", 0, NULL
, 'a' },
959 { "help",0, NULL
, 'h' },
960 { "move",0, NULL
, 'm' },
961 { "bind",0, NULL
, 'b' },
962 { "read-only", 0, NULL
, 'r' },
963 { "ro", 0, NULL
, 'r' },
964 { "verbose", 0, NULL
, 'v' },
965 { "version", 0, NULL
, 'V' },
966 { "read-write", 0, NULL
, 'w' },
967 { "rw", 0, NULL
, 'w' },
968 { "options", 1, NULL
, 'o' },
969 { "type", 1, NULL
, 't' },
970 { "rsize",1, NULL
, 'R' },
971 { "wsize",1, NULL
, 'W' },
972 { "uid", 1, NULL
, '1'},
973 { "gid", 1, NULL
, '2'},
974 { "user",1,NULL
,'u'},
975 { "username",1,NULL
,'u'},
977 { "domain",1,NULL
,'d'},
978 { "password",1,NULL
,'p'},
979 { "pass",1,NULL
,'p'},
980 { "credentials",1,NULL
,'c'},
981 { "port",1,NULL
,'P'},
982 /* { "uuid",1,NULL,'U'}, */ /* BB unimplemented */
986 /* convert a string to uppercase. return false if the string
987 * wasn't ASCII or was a NULL ptr */
989 uppercase_string(char *string
)
995 /* check for unicode */
996 if ((unsigned char) string
[0] & 0x80)
998 *string
= toupper((unsigned char) *string
);
1005 int main(int argc
, char ** argv
)
1008 int flags
= MS_MANDLOCK
; /* no need to set legacy MS_MGC_VAL */
1009 char * orgoptions
= NULL
;
1010 char * share_name
= NULL
;
1011 char * ipaddr
= NULL
;
1013 char * mountpoint
= NULL
;
1014 char * options
= NULL
;
1015 char * resolved_path
= NULL
;
1026 size_t options_size
= 0;
1027 int retry
= 0; /* set when we have to retry mount with uppercase */
1028 struct stat statbuf
;
1029 struct utsname sysinfo
;
1030 struct mntent mountent
;
1033 /* setlocale(LC_ALL, "");
1034 bindtextdomain(PACKAGE, LOCALEDIR);
1035 textdomain(PACKAGE); */
1038 thisprogram
= argv
[0];
1044 if(thisprogram
== NULL
)
1045 thisprogram
= "mount.cifs";
1048 /* BB add workstation name and domain and pass down */
1050 /* #ifdef _GNU_SOURCE
1051 printf(" node: %s machine: %s sysname %s domain %s\n", sysinfo.nodename,sysinfo.machine,sysinfo.sysname,sysinfo.domainname);
1055 share_name
= strndup(argv
[1], MAX_UNC_LEN
);
1056 if (share_name
== NULL
) {
1057 fprintf(stderr
, "%s: %s", argv
[0], strerror(ENOMEM
));
1060 mountpoint
= argv
[2];
1066 /* add sharename in opts string as unc= parm */
1068 while ((c
= getopt_long (argc
, argv
, "afFhilL:no:O:rsSU:vVwt:",
1069 longopts
, NULL
)) != -1) {
1071 /* No code to do the following options yet */
1073 list_with_volumelabel = 1;
1076 volumelabel = optarg;
1083 case 'h': /* help */
1084 mount_cifs_usage ();
1094 "option 'b' (MS_BIND) not supported\n");
1102 "option 'm' (MS_MOVE) not supported\n");
1106 orgoptions
= strdup(optarg
);
1108 case 'r': /* mount readonly */
1118 printf ("mount.cifs version: %s.%s%s\n",
1119 MOUNT_CIFS_VERSION_MAJOR
,
1120 MOUNT_CIFS_VERSION_MINOR
,
1121 MOUNT_CIFS_VENDOR_SUFFIX
);
1123 memset(mountpassword
,0,MOUNT_PASSWD_SIZE
);
1127 flags
&= ~MS_RDONLY
;
1130 rsize
= atoi(optarg
) ;
1133 wsize
= atoi(optarg
);
1136 if (isdigit(*optarg
)) {
1139 uid
= strtoul(optarg
, &ep
, 10);
1141 printf("bad uid value \"%s\"\n", optarg
);
1147 if (!(pw
= getpwnam(optarg
))) {
1148 printf("bad user name \"%s\"\n", optarg
);
1156 if (isdigit(*optarg
)) {
1159 gid
= strtoul(optarg
, &ep
, 10);
1161 printf("bad gid value \"%s\"\n", optarg
);
1167 if (!(gr
= getgrnam(optarg
))) {
1168 printf("bad user name \"%s\"\n", optarg
);
1180 domain_name
= optarg
; /* BB fix this - currently ignored */
1184 if(mountpassword
== NULL
)
1185 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
1188 strlcpy(mountpassword
,optarg
,MOUNT_PASSWD_SIZE
+1);
1192 get_password_from_file(0 /* stdin */,NULL
);
1197 printf("unknown mount option %c\n",c
);
1203 if((argc
< 3) || (dev_name
== NULL
) || (mountpoint
== NULL
)) {
1208 if (getenv("PASSWD")) {
1209 if(mountpassword
== NULL
)
1210 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
1212 strlcpy(mountpassword
,getenv("PASSWD"),MOUNT_PASSWD_SIZE
);
1215 } else if (getenv("PASSWD_FD")) {
1216 get_password_from_file(atoi(getenv("PASSWD_FD")),NULL
);
1217 } else if (getenv("PASSWD_FILE")) {
1218 get_password_from_file(0, getenv("PASSWD_FILE"));
1221 if (orgoptions
&& parse_options(&orgoptions
, &flags
)) {
1225 ipaddr
= parse_server(&share_name
);
1226 if((ipaddr
== NULL
) && (got_ip
== 0)) {
1227 printf("No ip address specified and hostname not found\n");
1232 /* BB save off path and pop after mount returns? */
1233 resolved_path
= (char *)malloc(PATH_MAX
+1);
1235 /* Note that if we can not canonicalize the name, we get
1236 another chance to see if it is valid when we chdir to it */
1237 if (realpath(mountpoint
, resolved_path
)) {
1238 mountpoint
= resolved_path
;
1241 if(chdir(mountpoint
)) {
1242 printf("mount error: can not change directory into mount target %s\n",mountpoint
);
1247 if(stat (".", &statbuf
)) {
1248 printf("mount error: mount point %s does not exist\n",mountpoint
);
1253 if (S_ISDIR(statbuf
.st_mode
) == 0) {
1254 printf("mount error: mount point %s is not a directory\n",mountpoint
);
1259 if((getuid() != 0) && (geteuid() == 0)) {
1260 if((statbuf
.st_uid
== getuid()) && (S_IRWXU
== (statbuf
.st_mode
& S_IRWXU
))) {
1261 #ifndef CIFS_ALLOW_USR_SUID
1262 /* Do not allow user mounts to control suid flag
1263 for mount unless explicitly built that way */
1264 flags
|= MS_NOSUID
| MS_NODEV
;
1267 printf("mount error: permission denied or not superuser and mount.cifs not installed SUID\n");
1273 user_name
= getusername();
1277 if(got_password
== 0) {
1278 char *tmp_pass
= getpass("Password: "); /* BB obsolete sys call but
1279 no good replacement yet. */
1280 mountpassword
= (char *)calloc(MOUNT_PASSWD_SIZE
+1,1);
1281 if (!tmp_pass
|| !mountpassword
) {
1282 printf("Password not entered, exiting\n");
1285 strlcpy(mountpassword
, tmp_pass
, MOUNT_PASSWD_SIZE
+1);
1288 /* FIXME launch daemon (handles dfs name resolution and credential change)
1289 remember to clear parms and overwrite password field before launching */
1292 optlen
= strlen(orgoptions
);
1297 optlen
+= strlen(share_name
) + 4;
1299 printf("No server share name specified\n");
1300 printf("\nMounting the DFS root for server not implemented yet\n");
1304 optlen
+= strlen(user_name
) + 6;
1306 optlen
+= strlen(ipaddr
) + 4;
1308 optlen
+= strlen(mountpassword
) + 6;
1310 options_size
= optlen
+ 10 + DOMAIN_SIZE
;
1311 options
= (char *)malloc(options_size
/* space for commas in password */ + 8 /* space for domain= , domain name itself was counted as part of the length username string above */);
1313 if(options
== NULL
) {
1314 printf("Could not allocate memory for mount options\n");
1319 strlcpy(options
,"unc=",options_size
);
1320 strlcat(options
,share_name
,options_size
);
1321 /* scan backwards and reverse direction of slash */
1322 temp
= strrchr(options
, '/');
1323 if(temp
> options
+ 6)
1326 strlcat(options
,",ip=",options_size
);
1327 strlcat(options
,ipaddr
,options_size
);
1331 /* check for syntax like user=domain\user */
1333 domain_name
= check_for_domain(&user_name
);
1334 strlcat(options
,",user=",options_size
);
1335 strlcat(options
,user_name
,options_size
);
1339 /* extra length accounted for in option string above */
1340 strlcat(options
,",domain=",options_size
);
1341 strlcat(options
,domain_name
,options_size
);
1345 /* Commas have to be doubled, or else they will
1346 look like the parameter separator */
1347 /* if(sep is not set)*/
1349 check_for_comma(&mountpassword
);
1350 strlcat(options
,",pass=",options_size
);
1351 strlcat(options
,mountpassword
,options_size
);
1354 strlcat(options
,",ver=",options_size
);
1355 strlcat(options
,MOUNT_CIFS_VERSION_MAJOR
,options_size
);
1358 strlcat(options
,",",options_size
);
1359 strlcat(options
,orgoptions
,options_size
);
1362 strlcat(options
,",prefixpath=",options_size
);
1363 strlcat(options
,prefixpath
,options_size
); /* no need to cat the / */
1366 printf("\nmount.cifs kernel mount options %s \n",options
);
1368 /* convert all '\\' to '/' in share portion so that /proc/mounts looks pretty */
1369 replace_char(dev_name
, '\\', '/', strlen(share_name
));
1371 if(mount(dev_name
, mountpoint
, "cifs", flags
, options
)) {
1372 /* remember to kill daemon on error */
1375 printf("mount failed but no error number set\n");
1378 printf("mount error: cifs filesystem not supported by the system\n");
1383 if (uppercase_string(dev_name
) &&
1384 uppercase_string(share_name
) &&
1385 uppercase_string(prefixpath
)) {
1386 printf("retrying with upper case share name\n");
1391 printf("mount error %d = %s\n",errno
,strerror(errno
));
1393 printf("Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)\n");
1397 pmntfile
= setmntent(MOUNTED
, "a+");
1399 mountent
.mnt_fsname
= dev_name
;
1400 mountent
.mnt_dir
= mountpoint
;
1401 mountent
.mnt_type
= CONST_DISCARD(char *,"cifs");
1402 mountent
.mnt_opts
= (char *)malloc(220);
1403 if(mountent
.mnt_opts
) {
1404 char * mount_user
= getusername();
1405 memset(mountent
.mnt_opts
,0,200);
1406 if(flags
& MS_RDONLY
)
1407 strlcat(mountent
.mnt_opts
,"ro",220);
1409 strlcat(mountent
.mnt_opts
,"rw",220);
1410 if(flags
& MS_MANDLOCK
)
1411 strlcat(mountent
.mnt_opts
,",mand",220);
1412 if(flags
& MS_NOEXEC
)
1413 strlcat(mountent
.mnt_opts
,",noexec",220);
1414 if(flags
& MS_NOSUID
)
1415 strlcat(mountent
.mnt_opts
,",nosuid",220);
1416 if(flags
& MS_NODEV
)
1417 strlcat(mountent
.mnt_opts
,",nodev",220);
1418 if(flags
& MS_SYNCHRONOUS
)
1419 strlcat(mountent
.mnt_opts
,",synch",220);
1422 strlcat(mountent
.mnt_opts
,",user=",220);
1423 strlcat(mountent
.mnt_opts
,mount_user
,220);
1425 /* free(mount_user); do not free static mem */
1428 mountent
.mnt_freq
= 0;
1429 mountent
.mnt_passno
= 0;
1430 rc
= addmntent(pmntfile
,&mountent
);
1431 endmntent(pmntfile
);
1432 SAFE_FREE(mountent
.mnt_opts
);
1434 printf("could not update mount table\n");
1440 int len
= strlen(mountpassword
);
1441 memset(mountpassword
,0,len
);
1442 SAFE_FREE(mountpassword
);
1446 memset(options
,0,optlen
);
1451 memset(orgoptions
,0,orgoptlen
);
1452 SAFE_FREE(orgoptions
);
1455 SAFE_FREE(resolved_path
);
1456 SAFE_FREE(share_name
);