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diff --git a/src/global/mail_task.c b/src/global/mail_task.c
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+/*++
+/* NAME
+/* mail_task 3
+/* SUMMARY
+/* set task name for logging purposes
+/* SYNOPSIS
+/* #include <mail_task.h>
+/*
+/* const char *mail_task(argv0)
+/* const char *argv0;
+/* DESCRIPTION
+/* mail_task() enforces consistent naming of mailer processes.
+/* It strips pathname information from the process name, and
+/* prepends the name of the mail system so that logfile entries
+/* are easier to recognize. The mail system name is specified
+/* with the "syslog_name" configuration parameter.
+/*
+/* The result is overwritten with each call.
+/*
+/* A null argv0 argument requests that the current result is
+/* returned, or "unknown" when no current result exists.
+/* LICENSE
+/* .ad
+/* .fi
+/* The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/* Wietse Venema
+/* IBM T.J. Watson Research
+/* P.O. Box 704
+/* Yorktown Heights, NY 10598, USA
+/*
+/* Wietse Venema
+/* Google, Inc.
+/* 111 8th Avenue
+/* New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <vstring.h>
+#include <safe.h>
+
+/* Global library. */
+
+#include "mail_params.h"
+#include "mail_conf.h"
+#include "mail_task.h"
+
+/* mail_task - clean up and decorate the process name */
+
+const char *mail_task(const char *argv0)
+{
+ static VSTRING *canon_name;
+ const char *slash;
+ const char *tag;
+
+ if (argv0 == 0 && canon_name == 0)
+ argv0 = "unknown";
+ if (argv0) {
+ if (canon_name == 0)
+ canon_name = vstring_alloc(10);
+ if ((slash = strrchr(argv0, '/')) != 0 && slash[1])
+ argv0 = slash + 1;
+ /* Setenv()-ed from main.cf, or inherited from master. */
+ if ((tag = safe_getenv(CONF_ENV_LOGTAG)) == 0)
+ /* Check main.cf settings directly, in case set-gid. */
+ tag = var_syslog_name ? var_syslog_name :
+ mail_conf_eval(DEF_SYSLOG_NAME);
+ vstring_sprintf(canon_name, "%s/%s", tag, argv0);
+ }
+ return (vstring_str(canon_name));
+}