sysstat (10.0.5-1) 05-defaultfile_message.patch

From: Robert Luberda <robert@debian.org>
Date: Tue, 23 Mar 2010 22:04:47 +0100
Subject: 05-defaultfile_message

If sar cannot open a data file, print a message indicating that sysstat
might not be enabled (closes: #511418).
---
 sa_common.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sa_common.c b/sa_common.c
index 4297087..de51499 100644
--- a/sa_common.c
+++ b/sa_common.c
@@ -43,6 +43,7 @@
 #define _(string) (string)
 #endif
 
+static char defaultFileUsed = 0; /* Debian: fix for bug#511418 */
 extern struct act_bitmap cpu_bitmap;
 
 /*
@@ -312,6 +313,7 @@ void set_default_file(struct tm *rectime, char *datafile)
 	snprintf(datafile, MAX_FILE_LEN,
 		 "%s/sa%02d", SA_DIR, rectime->tm_mday);
 	datafile[MAX_FILE_LEN - 1] = '\0';
+	defaultFileUsed = 1; /* Debian: fix for bug#511418 */
 }
 
 /*
@@ -1058,7 +1060,12 @@ void check_file_actlst(int *ifd, char *dfile, struct activity *act[],
 
 	/* Open sa data file */
 	if ((*ifd = open(dfile, O_RDONLY)) < 0) {
+		const int saved_errno=errno; /* Debian: fix for bug#511418 */
 		fprintf(stderr, _("Cannot open %s: %s\n"), dfile, strerror(errno));
+		if (saved_errno == ENOENT && defaultFileUsed) /* Debian: fix for bug#511418 */
+		{
+			fprintf(stderr, "Please check if data collecting is enabled in /etc/default/sysstat\n");
+		}
 		exit(2);
 	}