This file is indexed.

/usr/share/sendmail/update_sys is in sendmail-base 8.15.2-8.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
#!/bin/sh
#-----------------------------------------------------------------------------
#
# $Sendmail: update_sys,v 8.15.2 2016-12-08 18:43:49 cowboy Exp $
#
# Update system files used by Sendmail for Debian
#
# Copyright (c) 2001-2010 Richard Nelson.  All Rights Reserved.
#
# Notes (to all):
#	* Several directories/files have their permissions forced...
#	  This is done to allow the MSP/MTA split
#	* This exec runs 'set +e' to ignore errors!!! this is done to
#	  support those running NFS (or similiar) systems, where the
#	  chmod/chown may fail - If this happens, you'll need to update
#	  those items by hand !
#
# Notes (to self):
#	*
#
#-----------------------------------------------------------------------------
set +e;

# Path to other sendmail helpers
if [ -x ./update_sendmail ]; then
	sm_path='.';
elif [ -x $(dirname $0)/update_sendmail ]; then
	sm_path=$(dirname $0);
else		
	sm_path=/usr/share/sendmail;
	fi;
# Bring in sendmail.conf for the network definitions
if [ ! -f /etc/mail/sendmail.conf ]; then
	if [ -x $sm_path/update_conf ]; then
		$sm_path/update_conf;
		fi;
	fi;
if [ -f /etc/mail/sendmail.conf ]; then
	. /etc/mail/sendmail.conf;
	fi;
if [ "$HANDS_OFF" != 'No' ]; then
	exit 0;
	fi;

# flag used to indicate a dataset has been moved, may need another update
changed=0;

#-----------------------------------------------------------------------------
# Warn the user that this may take a bit...
#-----------------------------------------------------------------------------
echo '';
echo 'Checking filesystem, this may take some time - it will not hang!';
echo -n '  ...  ';

#------------------------------------------------------------------------------
# Create any needed directories, and move any prior data to its new home
#------------------------------------------------------------------------------
# /etc/aliases should exist, though not owned by sendmail, we'll create one
if [ ! -e /etc/aliases ]; then
	changed=1;
	if [ -f /usr/share/doc/sendmail/examples/db/aliases ]; then
		echo "Creating /etc/aliases (not found)";
		cp /usr/share/sendmail/examples/db/aliases \
			/etc/aliases;
	else
		touch /etc/aliases;
		fi;
	chown root:root /etc/aliases;
	chmod 0644 /etc/aliases;
	fi;

#------------------------------------------------------------------------------
# /var/mail is the FHS user mail location, /var/spool/mail is older
#	Note: we set the sticky bit to prevent a sgid exploit from erasing files
if [ ! -e /var/mail ]; then
	changed=1;
	if [ -L /var/spool/mail ]; then
		ln -sf spool/mail /var/mail;
	elif [ -d /var/spool/mail ]; then
		mv /var/spool/mail /var/mail;
		chown root:root /var/mail;
		chmod 03777 /var/mail;
	else
		mkdir /var/mail;
		chown root:root /var/mail;
		chmod 03777 /var/mail;
		fi;
	fi;
#
# Make sure the sticky bit is set in pre-existing directories
if [ -d /var/mail ] && [ ! -k /var/mail ]; then
	chmod 03777 /var/mail;
	fi;
if [ -d /var/spool/mail ] \
&& [ ! -k /var/spool/mail ]; then
	chmod a+t /var/spool/mail;
	fi;
if [ ! -d /var/spool/mail ] \
&& [ ! -L /var/spool/mail ]; then
	ln -sf ../mail /var/spool/mail;
	#mkdir /var/spool/mail;
	#chown root:root /var/spool/mail;
	#chmod 03777 /var/spool/mail;
	fi;

#------------------------------------------------------------------------------
# /etc/mail is where the Sendmail config files live
if [ ! -d /etc/mail ]; then
	changed=1;
	mkdir /etc/mail;
	fi;
chown smmta:smmsp /etc/mail;
chmod 02755 /etc/mail;
mkdir -p /etc/mail/m4;
chown smmta:smmsp /etc/mail/m4;
chmod 02755 /etc/mail/m4;
#
# With the MSP/MTA split, we don't want any g=w files or directories
# to save us from potential sgid attacks
find /etc/mail -perm /g=w \( -type f -o -type d \) -print \
	| xargs -r chmod g-w,o-w;

#------------------------------------------------------------------------------
# /var/run/sendmail is where we store pid files, control sockets, stamps, etc
if [ ! -d /var/run/sendmail ]; then
	changed=1;
	mkdir /var/run/sendmail;
	fi;
chown root:smmta /var/run/sendmail;
chmod 02755 /var/run/sendmail;
if [ ! -d /var/run/sendmail/mta ]; then
	mkdir /var/run/sendmail/mta;
	fi;
chown smmta:smmsp /var/run/sendmail/mta;
chmod 02755 /var/run/sendmail/mta;
if [ ! -d /var/run/sendmail/msp ]; then
	mkdir /var/run/sendmail/msp;
	fi;
chown smmsp:smmsp /var/run/sendmail/msp;
chmod 02775 /var/run/sendmail/msp;
if [ ! -d /var/run/sendmail/stampdir ]; then
	mkdir /var/run/sendmail/stampdir;
	fi;
chown root:smmsp /var/run/sendmail/stampdir;
chmod 02775 /var/run/sendmail/stampdir;
#
# Remove older files
rm -f /var/run/sendmail.pid;
rm -f /var/run/sendmail/sendmail.pid;
rm -f /var/run/sendmail/smcontrol;

#------------------------------------------------------------------------------
# /var/lib/sendmail is where we stuff host status and sendmail.st
# instead of the mail queue and  /etc/ (respectively)
if [ ! -d /var/lib/sendmail ]; then
	changed=1;
	mkdir /var/lib/sendmail;
	fi;
chown smmta:smmsp /var/lib/sendmail;
chmod 02751 /var/lib/sendmail;
touch /var/lib/sendmail/dead.letter;
chown smmta:smmsp /var/lib/sendmail/dead.letter;
chmod 0660 /var/lib/sendmail/dead.letter;
if [ -d /var/state/sendmail/host_status ]; then
	changed=1;
	echo "Moving /var/state/sendmail/host_status to /var/lib/sendmail/";
	mv -f /var/state/sendmail/host_status \
		/var/lib/sendmail/host_status;
	fi;
if [ -d /var/sendmail/host_status ]; then
	changed=1;
	echo "Moving /var/sendmail/host_status to /var/lib/sendmail/";
	mv -f /var/sendmail/host_status \
		/var/lib/sendmail/host_status;
	fi;
if [ ! -d /var/lib/sendmail/host_status ]; then
	mkdir /var/lib/sendmail/host_status;
	fi;
chown root:smmsp /var/lib/sendmail/host_status;
chmod 02775 /var/lib/sendmail/host_status;
find /var/lib/sendmail/host_status -type d -print \
	| xargs -r chown root:smmsp;
find /var/lib/sendmail/host_status -type d -print \
	| xargs -r chmod 02755;
#
# if sendmail.st doesn't exist, don't create it !
if [ -f /var/log/sendmail.st ]; then
	changed=1;
	echo "Moving /var/log/sendmail.st to /var/lib/sendmail/";
	mv /var/log/sendmail.st \
		/var/lib/sendmail/sendmail.st;
	fi;
if [ -f /var/sendmail/sendmail.st ]; then
	changed=1;
	echo "Moving /var/sendmail/sendmail.st to /var/lib/sendmail/";
	mv /var/sendmail/sendmail.st \
		/var/lib/sendmail/sendmail.st;
	fi;
if [ -f /var/lib/sendmail/sendmail.st ]; then
	chown root:smmsp /var/lib/sendmail/sendmail.st;
	chmod 0640 /var/lib/sendmail/sendmail.st;
	if [ ! -f /var/lib/sendmail/sm-client.st ]; then
		touch /var/lib/sendmail/sm-client.st;
		fi;
	fi;
if [ -f /var/lib/sendmail/sm-client.st ]; then
	chown smmsp:smmsp /var/lib/sendmail/sm-client.st;
	chmod 0660 /var/lib/sendmail/sm-client.st;
	fi;
if [ ! -f /var/lib/sendmail/dead.letter ]; then
	touch /var/lib/sendmail/dead.letter;
	fi;
chown root:smmsp /var/lib/sendmail/dead.letter;
chmod 0660 /var/lib/sendmail/dead.letter;
#
# Remove older files
rm -rf /var/sendmail;
rm -rf /var/state/sendmail;

#------------------------------------------------------------------------------
# /var/spool/mqueue is the MTA mail queue directory
if [ ! -d /var/spool/mqueue ]; then
	changed=1;
	mkdir /var/spool/mqueue;
	fi;
chown smmta:smmsp /var/spool/mqueue;
chmod 02750 /var/spool/mqueue;
#
# With the MSP/MTA split, we *DO* need g=r, gid=smmsp queue directories and
# files for mailq to work...
find /var/spool/mqueue -print \
	| xargs -r chown smmta:smmsp;
find /var/spool/mqueue -type d -print \
	| xargs -r chmod g+rxs-w,o-rwx;
find /var/spool/mqueue -type f -print \
	| xargs -r chmod g+r-wx,o-rwx;

#------------------------------------------------------------------------------
# /var/spool/mqueue-client is the MSP mail queue directory
if [ ! -d /var/spool/mqueue-client ]; then
	mkdir /var/spool/mqueue-client;
	fi;
chown smmsp:smmsp /var/spool/mqueue-client;
chmod 02770 /var/spool/mqueue-client;
find /var/spool/mqueue-client -perm /o=r -print \
	| xargs -r chmod o-rwx;

#-----------------------------------------------------------------------------
echo ' Done.';

#------------------------------------------------------------------------------
exit $changed;