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-rw-r--r--source3/client/mount.cifs.c221
1 files changed, 120 insertions, 101 deletions
diff --git a/source3/client/mount.cifs.c b/source3/client/mount.cifs.c
index 0bc61ae38f..9f4d1d3fd0 100644
--- a/source3/client/mount.cifs.c
+++ b/source3/client/mount.cifs.c
@@ -80,6 +80,9 @@
#define MOUNT_PASSWD_SIZE 64
#define DOMAIN_SIZE 64
+/* currently maximum length of IPv6 address string */
+#define MAX_ADDRESS_LEN INET6_ADDRSTRLEN
+
const char *thisprogram;
int verboseflag = 0;
static int got_password = 0;
@@ -189,12 +192,6 @@ static char * getusername(void) {
return username;
}
-static char * parse_cifs_url(char * unc_name)
-{
- printf("\nMounting cifs URL not implemented yet. Attempt to mount %s\n",unc_name);
- return NULL;
-}
-
static int open_cred_file(char * file_name)
{
char * line_buf;
@@ -494,7 +491,7 @@ static int parse_options(char ** optionsp, int * filesys_flags)
} else if (strncmp(data, "ip", 2) == 0) {
if (!value || !*value) {
printf("target ip address argument missing");
- } else if (strnlen(value, 35) < 35) {
+ } else if (strnlen(value, MAX_ADDRESS_LEN) <= MAX_ADDRESS_LEN) {
if(verboseflag)
printf("ip address %s override specified\n",value);
got_ip = 1;
@@ -882,23 +879,23 @@ static void replace_char(char *string, char from, char to, int maxlen)
}
/* Note that caller frees the returned buffer if necessary */
-static char * parse_server(char ** punc_name)
+static struct addrinfo *
+parse_server(char ** punc_name)
{
char * unc_name = *punc_name;
int length = strnlen(unc_name, MAX_UNC_LEN);
char * share;
- char * ipaddress_string = NULL;
- struct hostent * host_entry = NULL;
- struct in_addr server_ipaddr;
+ struct addrinfo *addrlist;
+ int rc;
if(length > (MAX_UNC_LEN - 1)) {
printf("mount error: UNC name too long");
return NULL;
}
- if (strncasecmp("cifs://",unc_name,7) == 0)
- return parse_cifs_url(unc_name+7);
- if (strncasecmp("smb://",unc_name,6) == 0) {
- return parse_cifs_url(unc_name+6);
+ if ((strncasecmp("cifs://", unc_name, 7) == 0) ||
+ (strncasecmp("smb://", unc_name, 6) == 0)) {
+ printf("\nMounting cifs URL not implemented yet. Attempt to mount %s\n", unc_name);
+ return NULL;
}
if(length < 3) {
@@ -939,7 +936,12 @@ continue_unc_parsing:
*share = 0; /* temporarily terminate the string */
share += 1;
if(got_ip == 0) {
- host_entry = gethostbyname(unc_name);
+ rc = getaddrinfo(unc_name, NULL, NULL, &addrlist);
+ if (rc != 0) {
+ printf("mount error: could not resolve address for %s: %s\n",
+ unc_name, gai_strerror(rc));
+ addrlist = NULL;
+ }
}
*(share - 1) = '/'; /* put delimiter back */
@@ -954,23 +956,9 @@ continue_unc_parsing:
printf("ip address specified explicitly\n");
return NULL;
}
- if(host_entry == NULL) {
- printf("mount error: could not find target server. TCP name %s not found\n", unc_name);
- return NULL;
- } else {
- /* BB should we pass an alternate version of the share name as Unicode */
- /* BB what about ipv6? BB */
- /* BB add retries with alternate servers in list */
+ /* BB should we pass an alternate version of the share name as Unicode */
- memcpy(&server_ipaddr.s_addr, host_entry->h_addr, 4);
-
- ipaddress_string = inet_ntoa(server_ipaddr);
- if(ipaddress_string == NULL) {
- printf("mount error: could not get valid ip address for target server\n");
- return NULL;
- }
- return ipaddress_string;
- }
+ return addrlist;
} else {
/* BB add code to find DFS root (send null path on get DFS Referral to specified server here */
printf("Mounting the DFS root for a particular server not implemented yet\n");
@@ -1034,10 +1022,11 @@ int main(int argc, char ** argv)
int flags = MS_MANDLOCK; /* no need to set legacy MS_MGC_VAL */
char * orgoptions = NULL;
char * share_name = NULL;
- char * ipaddr = NULL;
+ const char * ipaddr = NULL;
char * uuid = NULL;
char * mountpoint = NULL;
char * options = NULL;
+ char * optionstail;
char * resolved_path = NULL;
char * temp;
char * dev_name;
@@ -1050,10 +1039,14 @@ int main(int argc, char ** argv)
int optlen = 0;
int orgoptlen = 0;
size_t options_size = 0;
+ size_t current_len;
int retry = 0; /* set when we have to retry mount with uppercase */
+ struct addrinfo *addrhead = NULL, *addr;
struct stat statbuf;
struct utsname sysinfo;
struct mntent mountent;
+ struct sockaddr_in *addr4;
+ struct sockaddr_in6 *addr6;
FILE * pmntfile;
/* setlocale(LC_ALL, "");
@@ -1245,8 +1238,8 @@ int main(int argc, char ** argv)
rc = EX_USAGE;
goto mount_exit;
}
- ipaddr = parse_server(&share_name);
- if((ipaddr == NULL) && (got_ip == 0)) {
+ addrhead = addr = parse_server(&share_name);
+ if((addrhead == NULL) && (got_ip == 0)) {
printf("No ip address specified and hostname not found\n");
rc = EX_USAGE;
goto mount_exit;
@@ -1316,7 +1309,6 @@ int main(int argc, char ** argv)
}
/* FIXME launch daemon (handles dfs name resolution and credential change)
remember to clear parms and overwrite password field before launching */
-mount_retry:
if(orgoptions) {
optlen = strlen(orgoptions);
orgoptlen = optlen;
@@ -1331,10 +1323,10 @@ mount_retry:
}
if(user_name)
optlen += strlen(user_name) + 6;
- if(ipaddr)
- optlen += strlen(ipaddr) + 4;
+ optlen += MAX_ADDRESS_LEN + 4;
if(mountpassword)
optlen += strlen(mountpassword) + 6;
+mount_retry:
SAFE_FREE(options);
options_size = optlen + 10 + DOMAIN_SIZE;
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 */);
@@ -1344,18 +1336,12 @@ mount_retry:
exit(EX_SYSERR);
}
- options[0] = 0;
- strlcpy(options,"unc=",options_size);
+ strlcpy(options, "unc=", options_size);
strlcat(options,share_name,options_size);
/* scan backwards and reverse direction of slash */
temp = strrchr(options, '/');
if(temp > options + 6)
*temp = '\\';
- if(ipaddr) {
- strlcat(options,",ip=",options_size);
- strlcat(options,ipaddr,options_size);
- }
-
if(user_name) {
/* check for syntax like user=domain\user */
if(got_domain == 0)
@@ -1397,11 +1383,42 @@ mount_retry:
/* convert all '\\' to '/' in share portion so that /proc/mounts looks pretty */
replace_char(dev_name, '\\', '/', strlen(share_name));
- if(mount(dev_name, mountpoint, "cifs", flags, options)) {
- /* remember to kill daemon on error */
+ if (!got_ip && addr) {
+ strlcat(options, ",ip=", options_size);
+ current_len = strnlen(options, options_size);
+ optionstail = options + current_len;
+ switch (addr->ai_addr->sa_family) {
+ case AF_INET6:
+ addr6 = (struct sockaddr_in6 *) addr->ai_addr;
+ ipaddr = inet_ntop(AF_INET6, &addr6->sin6_addr, optionstail,
+ options_size - current_len);
+ break;
+ case AF_INET:
+ addr4 = (struct sockaddr_in *) addr->ai_addr;
+ ipaddr = inet_ntop(AF_INET, &addr4->sin_addr, optionstail,
+ options_size - current_len);
+ break;
+ }
+
+ /* if the address looks bogus, try the next one */
+ if (!ipaddr) {
+ addr = addr->ai_next;
+ if (addr)
+ goto mount_retry;
+ rc = EX_SYSERR;
+ goto mount_exit;
+ }
+ }
+
+ if (mount(dev_name, mountpoint, "cifs", flags, options)) {
switch (errno) {
- case 0:
- printf("mount failed but no error number set\n");
+ case ECONNREFUSED:
+ case EHOSTUNREACH:
+ if (addr) {
+ addr = addr->ai_next;
+ if (addr)
+ goto mount_retry;
+ }
break;
case ENODEV:
printf("mount error: cifs filesystem not supported by the system\n");
@@ -1416,64 +1433,64 @@ mount_retry:
goto mount_retry;
}
}
- default:
- printf("mount error %d = %s\n",errno,strerror(errno));
}
+ printf("mount error(%d): %s\n", errno, strerror(errno));
printf("Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)\n");
rc = EX_FAIL;
- } else {
- atexit(unlock_mtab);
- rc = lock_mtab();
- if (rc) {
- printf("cannot lock mtab");
- goto mount_exit;
- }
- pmntfile = setmntent(MOUNTED, "a+");
- if (!pmntfile) {
- printf("could not update mount table\n");
- unlock_mtab();
- rc = EX_FILEIO;
- goto mount_exit;
- }
- mountent.mnt_fsname = dev_name;
- mountent.mnt_dir = mountpoint;
- mountent.mnt_type = CONST_DISCARD(char *,"cifs");
- mountent.mnt_opts = (char *)malloc(220);
- if(mountent.mnt_opts) {
- char * mount_user = getusername();
- memset(mountent.mnt_opts,0,200);
- if(flags & MS_RDONLY)
- strlcat(mountent.mnt_opts,"ro",220);
- else
- strlcat(mountent.mnt_opts,"rw",220);
- if(flags & MS_MANDLOCK)
- strlcat(mountent.mnt_opts,",mand",220);
- if(flags & MS_NOEXEC)
- strlcat(mountent.mnt_opts,",noexec",220);
- if(flags & MS_NOSUID)
- strlcat(mountent.mnt_opts,",nosuid",220);
- if(flags & MS_NODEV)
- strlcat(mountent.mnt_opts,",nodev",220);
- if(flags & MS_SYNCHRONOUS)
- strlcat(mountent.mnt_opts,",sync",220);
- if(mount_user) {
- if(getuid() != 0) {
- strlcat(mountent.mnt_opts,
- ",user=", 220);
- strlcat(mountent.mnt_opts,
- mount_user, 220);
- }
+ goto mount_exit;
+ }
+
+ atexit(unlock_mtab);
+ rc = lock_mtab();
+ if (rc) {
+ printf("cannot lock mtab");
+ goto mount_exit;
+ }
+ pmntfile = setmntent(MOUNTED, "a+");
+ if (!pmntfile) {
+ printf("could not update mount table\n");
+ unlock_mtab();
+ rc = EX_FILEIO;
+ goto mount_exit;
+ }
+ mountent.mnt_fsname = dev_name;
+ mountent.mnt_dir = mountpoint;
+ mountent.mnt_type = CONST_DISCARD(char *,"cifs");
+ mountent.mnt_opts = (char *)malloc(220);
+ if(mountent.mnt_opts) {
+ char * mount_user = getusername();
+ memset(mountent.mnt_opts,0,200);
+ if(flags & MS_RDONLY)
+ strlcat(mountent.mnt_opts,"ro",220);
+ else
+ strlcat(mountent.mnt_opts,"rw",220);
+ if(flags & MS_MANDLOCK)
+ strlcat(mountent.mnt_opts,",mand",220);
+ if(flags & MS_NOEXEC)
+ strlcat(mountent.mnt_opts,",noexec",220);
+ if(flags & MS_NOSUID)
+ strlcat(mountent.mnt_opts,",nosuid",220);
+ if(flags & MS_NODEV)
+ strlcat(mountent.mnt_opts,",nodev",220);
+ if(flags & MS_SYNCHRONOUS)
+ strlcat(mountent.mnt_opts,",sync",220);
+ if(mount_user) {
+ if(getuid() != 0) {
+ strlcat(mountent.mnt_opts,
+ ",user=", 220);
+ strlcat(mountent.mnt_opts,
+ mount_user, 220);
}
}
- mountent.mnt_freq = 0;
- mountent.mnt_passno = 0;
- rc = addmntent(pmntfile,&mountent);
- endmntent(pmntfile);
- unlock_mtab();
- SAFE_FREE(mountent.mnt_opts);
- if (rc)
- rc = EX_FILEIO;
}
+ mountent.mnt_freq = 0;
+ mountent.mnt_passno = 0;
+ rc = addmntent(pmntfile,&mountent);
+ endmntent(pmntfile);
+ unlock_mtab();
+ SAFE_FREE(mountent.mnt_opts);
+ if (rc)
+ rc = EX_FILEIO;
mount_exit:
if(mountpassword) {
int len = strlen(mountpassword);
@@ -1481,6 +1498,8 @@ mount_exit:
SAFE_FREE(mountpassword);
}
+ if (addrhead)
+ freeaddrinfo(addrhead);
SAFE_FREE(options);
SAFE_FREE(orgoptions);
SAFE_FREE(resolved_path);
generated by cgit (git 2.34.1) at 2024-11-20 00:06:56 +0000