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From: Marco d'Itri <md@linux.it>
Date: Fri, 2 Jun 2017 11:23:29 +0200
Subject: [PATCH] export $CALL_FILE to the link scripts

---
 pppd/options.c | 1 +
 pppd/pppd.8    | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/pppd/options.c b/pppd/options.c
index dc2d7329a93d..2de65f9aa8d5 100644
--- a/pppd/options.c
+++ b/pppd/options.c
@@ -1477,6 +1477,7 @@ callfile(argv)
     if ((fname = (char *) malloc(l)) == NULL)
 	novm("call file name");
     slprintf(fname, l, "%s%s", _PATH_PEERFILES, arg);
+    script_setenv("CALL_FILE", arg, 0);
 
     ok = options_from_file(fname, 1, 1, 1);
 
diff --git a/pppd/pppd.8 b/pppd/pppd.8
index 67181083808b..f6c9e909254c 100644
--- a/pppd/pppd.8
+++ b/pppd/pppd.8
@@ -1656,6 +1656,9 @@ the connection.
 .B LINKNAME
 The logical name of the link, set with the \fIlinkname\fR option.
 .TP
+.B CALL_FILE
+The value of the \fIcall\fR option.
+.TP
 .B DNS1
 If the peer supplies DNS server addresses, this variable is set to the
 first DNS server address supplied (whether or not the usepeerdns