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Top Forums Shell Programming and Scripting Strange permission issue on Linux server. Post 303003604 by mohtashims on Sunday 17th of September 2017 03:14:35 AM
Old 09-17-2017
RedHat Strange permission issue on Linux server.

Starting
Code:
sendmail

throws this error:

Quote:
Sep 17 06:56:06 techx make[23857]: makemap: error opening type hash map access.db: Executable files not allowed
I decided to see the permission on the files under /etc/mail and this is the output:

Code:
[root@techx mail]# ls -ltr
total 284
-rwxr-xr-x. 1 root root  1847 Jan 27  2014 virtusertable
-rwxr-xr-x. 1 root root   127 Jan 27  2014 trusted-users
-rwxr-xr-x. 1 root root    92 Jan 27  2014 Makefile
-rwxr-xr-x. 1 root root  2700 Jan 27  2014 make
-rwxr-xr-x. 1 root root   997 Jan 27  2014 mailertable
-rwxr-xr-x. 1 root root   233 Jan 27  2014 domaintable
-rwxr-xr-x. 1 root root   724 Sep 12 18:13 access
-rwxr-xr-x. 1 root root 12288 Sep 12 18:13 access.db
-rwxr-xr-x. 1 root root  1041 Jun  9  2014 submit.mc
.....
.....

On my dev server development_techx this works perfectly fine so i decided to compare the permission of the dev which shows

Code:
[root@development_techx mail]# ls -ltr
total 440
-rwxr-xr-x 1 root root  1847 Jan 27  2014 virtusertable
-rwxr-xr-x 1 root root   127 Jan 27  2014 trusted-users
-rwxr-xr-x 1 root root    92 Jan 27  2014 Makefile
-rwxr-xr-x 1 root root  2700 Jan 27  2014 make
-rwxr-xr-x 1 root root   997 Jan 27  2014 mailertable
-rwxr-xr-x 1 root root    64 Jan 27  2014 local-host-names
-rwxr-xr-x 1 root root   724 Sep 12 18:13 access
-rwxr-xr-x 1 root root 12288 Sep 12 18:13 access.db
-rwxr-xr-x 1 root root  1041 Jun  9  2014 submit.mc
-rwxr-xr-x 1 root root 41680 Jun  9  2014 submit.cf
.....
.....

Do you see the difference ?

The problem with techx server is all the files have permission which hows a (.) a (dot) at the end of the permissions when you fire the ls -ltr command which we do not see on development_techx as you can see below.

wrong vs right

-rwxr-xr-x. 1 root root 724 Sep 12 18:13 access vs -rwxr-xr-x 1 root root 724 Sep 12 18:13 access

I had used chmod -R 755 /etc/mail command for changing permission on both the servers.

So why do i see the difference or the (.) in the end and how can i resolve this difference ?

Last edited by mohtashims; 09-17-2017 at 06:08 AM..
 

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makemap(1M)						  System Administration Commands					       makemap(1M)

NAME
makemap - create database maps for sendmail SYNOPSIS
makemap [-N] [-d] [-f] [-o] [-r] [-s] [-v] [-C file] [-c cachesize] [-D commentchar] [-e] [-l] [-t delim] [-u] mantype mapname DESCRIPTION
makemap creates the database maps used by the keyed map lookups in sendmail(1M). makemap reads from the standard input and outputs to the specified mapname. In all cases, makemap reads lines from the standard input consisting of two words separated by white space. The first is the database key, the second is the value. The value may contain %n strings to indicated parameter substitution. Literal percents should be doubled (%%). Blank lines and lines beginning with # are ignored. makemap handles three different database formats. Database format is selected using the maptype parameter. See OPERANDS. OPTIONS
The following options are supported: -c cachesize Use the specified hash and B-Tree cache size (cachesize). -C file Use the specified sendmail configuration file (file) for looking up the TrustedUser option. -d Allow duplicate keys in the map. This is only allowed on B-Tree format maps. If two identical keys are read, both be inserted into the map. -D commentchar Use the specified character to indicate a comment (which is ignored) instead of the default of '#'. -e Allow empty value (right hand side). -f Normally, all upper case letters in the key are folded to lower case. This flag disables that behavior. This is intended to mesh with the -f flag in the K line in sendmail.cf. The value is never case folded. -l List supported map types. -N Include the null byte that terminates strings in the map. This must match the -N flag in the K line in sendmail.cf -o Append to an old file. This allows you to augment an existing file. -r Allow replacement of existing keys. Normally makemap complains if you repeat a key, and does not do the insert. -s Ignore safety checks on maps being created. This includes checking for hard or symbolic links in world writable directo- ries. -t delim Use the specified delimiter (delim) instead of white space. -u Dump (unmap) the content of the database to standard output. -v Verbosely print what it is doing. OPERANDS
The following operands are supported: mapname File name of the database map being created. maptype Specifies the database format. The following maptype parameters are available: dbm Specifies DBM format maps. btree Specifies B-Tree format maps. hash Specifies hash format maps. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsndmu | +-----------------------------+-----------------------------+ SEE ALSO
editmap(1M), sendmail(1M), attributes(5) SunOS 5.10 29 Jun 2004 makemap(1M)
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