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Top Forums Shell Programming and Scripting bash script with "mount -t cifs" hangs Post 302549976 by slouse on Wednesday 24th of August 2011 10:26:16 AM
Old 08-24-2011
bash script with "mount -t cifs" hangs

Thanks for the quick reply! There are no spaces in $usn and $passwd and the same format works for the other mount commands in the script.
dmesg records the following error messages, but only after I stop the hanging script by CTRL-C:
Code:
[10729.713718] CIFS VFS: Error connecting to socket. Aborting operation
[10729.713743] CIFS VFS: cifs_mount failed w/return code = -512

A quick google search did not reveal anything relevant for this error code, but since it only happens after aborting the script, this is probably not the culprit.
 

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CIFS.UPCALL(8)						    System Administration tools 					    CIFS.UPCALL(8)

NAME
cifs.upcall - Userspace upcall helper for Common Internet File System (CIFS) SYNOPSIS
cifs.upcall [--trust-dns|-t] [--version|-v] {keyid} DESCRIPTION
This tool is part of the cifs-utils suite. cifs.upcall is a userspace helper program for the linux CIFS client filesystem. There are a number of activities that the kernel cannot easily do itself. This program is a callout program that does these things for the kernel and then returns the result. cifs.upcall is generally intended to be run when the kernel calls request-key(8) for a particular key type. While it can be run directly from the command-line, it's not generally intended to be run that way. OPTIONS
-c This option is deprecated and is currently ignored. --trust-dns|-t With krb5 upcalls, the name used as the host portion of the service principal defaults to the hostname portion of the UNC. This option allows the upcall program to reverse resolve the network address of the server in order to get the hostname. This is less secure than not trusting DNS. When using this option, it's possible that an attacker could get control of DNS and trick the client into mounting a different server altogether. It's preferable to instead add server principals to the KDC for every possible hostname, but this option exists for cases where that isn't possible. The default is to not trust reverse hostname lookups in this fashion. --version|-v Print version number and exit. CONFIGURATION FOR KEYCTL
cifs.upcall is designed to be called from the kernel via the request-key callout program. This requires that request-key be told where and how to call this program. The current cifs.upcall program handles two different key types: cifs.spnego This keytype is for retrieving kerberos session keys dns_resolver This key type is for resolving hostnames into IP addresses To make this program useful for CIFS, you'll need to set up entries for them in request-key.conf(5). Here's an example of an entry for each key type: #OPERATION TYPE D C PROGRAM ARG1 ARG2... #========= ============= = = ================================ create cifs.spnego * * /usr/local/sbin/cifs.upcall %k create dns_resolver * * /usr/local/sbin/cifs.upcall %k See request-key.conf5() for more info on each field. SEE ALSO
request-key.conf(5), mount.cifs(8) AUTHOR
Igor Mammedov wrote the cifs.upcall program. Jeff Layton authored this manpage. The maintainer of the Linux CIFS VFS is Steve French. The Linux CIFS Mailing list is the preferred place to ask questions regarding these programs. cifs-utils 4.0 02/07/2010 CIFS.UPCALL(8)
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