I am trying to verify clamd operation as described in the documentation. When I try "clamd PING" or "clamd VERSION", I don't get any response at the console, just a line feed.
Looking at /var/log/clamd/log, I see the following error for each attempt like above:
Thu Feb 24 08:07:14 2005 -> ERROR: Socket file /tmp/clamd is in use by another process.
The socket file is /tmp/clamd and looks appropriate: it's owned by root and is world-writeable srwxrwxrwx.
When I stop clamd, the socket is deleted as it should be. Any ideas as to how to fix this or is it just a cosmetic error?
Here's clamd.conf:
## ## Example config file for the Clam AV daemon ## Please read the clamd.conf(5) manual before editing this file. ##
# Comment or remove the line below. #Example
# Uncomment this option to enable logging. # LogFile must be writable for the user running daemon. # A full path is required. # Default: disabled LogFile /var/log/clamd.log
# By default the log file is locked for writing - the lock protects against # running clamd multiple times (if want to run another clamd, please # copy the configuration file, change the LogFile variable, and run # the daemon with --config-file option). # This option disables log file locking. # Default: disabled #LogFileUnlock
# Maximal size of the log file. # Value of 0 disables the limit. # You may use 'M' or 'm' for megabytes (1M = 1m = 1048576 bytes) # and 'K' or 'k' for kilobytes (1K = 1k = 1024 bytes). To specify the size # in bytes just don't use modifiers. # Default: 1M #LogFileMaxSize 2M
# Log time with each message. # Default: disabled LogTime
# Also log clean files. Useful in debugging but drastically increases the # log size. # Default: disabled #LogClean
# Use system logger (can work together with LogFile). # Default: disabled #LogSyslog
# Specify the type of syslog messages - please refer to 'man syslog' # for facility names. # Default: LOG_LOCAL6 #LogFacility LOG_MAIL
# Enable verbose logging. # Default: disabled #LogVerbose
# This option allows you to save a process identifier of the listening # daemon (main thread). # Default: disabled PidFile /var/run/clamd.pid
# Optional path to the global temporary directory. # Default: system specific (usually /tmp or /var/tmp). TemporaryDirectory /tmp
# Path to the database directory. # Default: hardcoded (depends on installation options) DatabaseDirectory /var/lib/clamav
# The daemon works in a local OR a network mode. Due to security reasons we # recommend the local mode.
# Path to a local socket file the daemon will listen on. # Default: disabled LocalSocket /tmp/clamd
# Remove stale socket after unclean shutdown. # Default: disabled FixStaleSocket
# TCP port address. # Default: disabled #TCPSocket 3310
# TCP address. # By default we bind to INADDR_ANY, probably not wise. # Enable the following to provide some degree of protection # from the outside world. # Default: disabled #TCPAddr 127.0.0.1
# Maximum length the queue of pending connections may grow to. # Default: 15 #MaxConnectionQueueLength 30
# Clamd uses FTP-like protocol to receive data from remote clients.
# If you are using clamav-milter to balance load between remote clamd daemons
# on firewall servers you may need to tune the options below.
# Close the connection when the data size limit is exceeded. # The value should match your MTA's limit for a maximal attachment size. # Default: 10M #StreamMaxLength 20M
# Limit port range. # Default: 1024 #StreamMinPort 30000 # Default: 2048 #StreamMaxPort 32000
# Maximal number of threads running at the same time. # Default: 10 #MaxThreads 20
# Waiting for data from a client socket will timeout after this time (seconds).
# Value of 0 disables the timeout.
# Default: 120
#ReadTimeout 300
# Waiting for a new job will timeout after this time (seconds). # Default: 30 #IdleTimeout 60
# Maximal depth directories are scanned at. # Default: 15 #MaxDirectoryRecursion 20
# Follow directory symlinks. # Default: disabled #FollowDirectorySymlinks
# Follow regular file symlinks. # Default: disabled #FollowFileSymlinks
# Perform internal sanity check (database integrity and freshness). # Default: 1800 (30 min) #SelfCheck 600
# Execute a command when virus is found. In the command string %v will # be replaced by a virus name. # Default: disabled #VirusEvent /usr/local/bin/send_sms 123456789 "VIRUS ALERT: %v"
# Run as a selected user (clamd must be started by root). # Default: disabled #User clamav
# Initialize supplementary group access (clamd must be started by root). # Default: disabled #AllowSupplementaryGroups
# Stop deamon when libclamav reports out of memory condition. #ExitOnOOM
# Don't fork into background. # Default: disabled #Foreground
# Enable debug messages in libclamav. # Default: disabled #Debug
# Do not remove temporary files (for debug purposes). # Default: disabled #LeaveTemporaryFiles
# By default clamd uses scan options recommended by libclamav. This option # disables recommended options and allows you to enable selected ones below. # DO NOT TOUCH IT unless you know what you are doing. # Default: disabled #DisableDefaultScanOptions
## ## Executable files ##
# PE stands for Portable Executable - it's an executable file format used # in all 32-bit versions of Windows operating systems. This option allows # ClamAV to perform a deeper analysis of executable files and it's also # required for decompression of popular executable packers such as UPX, FSG, # and Petite. # Default: enabled #ScanPE
# With this option clamav will try to detect broken executables and mark # them as Broken.Executable # Default: disabled #DetectBrokenExecutables
## ## Documents ##
# This option enables scanning of Microsoft Office document macros. # Default: enabled #ScanOLE2
## ## Mail files ##
# Enable internal e-mail scanner. # Default: enabled #ScanMail
# If an email contains URLs ClamAV can download and scan them. # WARNING: This option may open your system to a DoS attack. # Never use it on loaded servers. # Default: disabled #MailFollowURLs
## ## HTML ##
# Perform HTML normalisation and decryption of MS Script Encoder code. # Default: enabled #ScanHTML
## ## Archives ##
# ClamAV can scan within archives and compressed files. # Default: enabled #ScanArchive
# Due to license issues libclamav does not support RAR 3.0 archives (only the
# old 2.0 format is supported). Because some users report stability problems
# with unrarlib it's disabled by default and you must uncomment the directive
# below to enable RAR 2.0 support.
# Default: disabled
#ScanRAR
# The options below protect your system against Denial of Service attacks # using archive bombs.
# Files in archives larger than this limit won't be scanned. # Value of 0 disables the limit. # Default: 10M #ArchiveMaxFileSize 15M
# Nested archives are scanned recursively, e.g. if a Zip archive contains a RAR
# file, all files within it will also be scanned. This options specifies how
# deep the process should be continued.
# Value of 0 disables the limit.
# Default: 8
#ArchiveMaxRecursion 9
# Number of files to be scanned within an archive. # Value of 0 disables the limit. # Default: 1000 #ArchiveMaxFiles 1500
# If a file in an archive is compressed more than ArchiveMaxCompressionRatio
# times it will be marked as a virus (Oversized.ArchiveType, e.g. Oversized.Zip)# Value of 0 disables the limit.
# Default: 250
#ArchiveMaxCompressionRatio 300
# Use slower but memory efficient decompression algorithm. # only affects the bzip2 decompressor. # Default: disabled #ArchiveLimitMemoryUsage
# Mark encrypted archives as viruses (Encrypted.Zip, Encrypted.RAR). # Default: disabled #ArchiveBlockEncrypted
# Mark archives as viruses (e.g. RAR.ExceededFileSize, Zip.ExceededFilesLimit)
# if ArchiveMaxFiles, ArchiveMaxFileSize, or ArchiveMaxRecursion limit is
# reached.
# Default: disabled
#ArchiveBlockMax
## ## Clamuko settings ## WARNING: This is experimental software. It is very likely it will hang ## up your system!!! ##
# Enable Clamuko. Dazuko (/dev/dazuko) must be configured and running. # Default: disabled #ClamukoScanOnAccess
# Set access mask for Clamuko. # Default: disabled #ClamukoScanOnOpen #ClamukoScanOnClose #ClamukoScanOnExec
# Set the include paths (all files in them will be scanned). You can have # multiple ClamukoIncludePath directives but each directory must be added # in a seperate line. # Default: disabled #ClamukoIncludePath /home #ClamukoIncludePath /students
# Set the exclude paths. All subdirectories are also excluded. # Default: disabled #ClamukoExcludePath /home/guru
# Don't scan files larger than ClamukoMaxFileSize # Value of 0 disables the limit. # Default: 5M #ClamukoMaxFileSize 10M
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