qlop: add ROOT support, bug #692224

Respect ROOT when set, to ease scripting of qlop interaction with
chroots.

Bug: https://bugs.gentoo.org/692224
Signed-off-by: Fabian Groffen <grobian@gentoo.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/qlop.c b/qlop.c
index fce0f69..7acb855 100644
--- a/qlop.c
+++ b/qlop.c
@@ -351,7 +351,14 @@ static int do_emerge_log(
 	struct pkg_match *pkg;
 	struct pkg_match *pkgw;
 
-	if ((fp = fopen(log, "r")) == NULL) {
+	/* support relative path in here and now, when using ROOT, stick to
+	 * it, turning relative into a moot point */
+	if (portroot[1] == '\0')
+		snprintf(buf, sizeof(buf), "%s", log);
+	else
+		snprintf(buf, sizeof(buf), "%s%s", portroot, log);
+	if ((fp = fopen(buf, "r")) == NULL)
+	{
 		warnp("Could not open logfile '%s'", log);
 		return 1;
 	}