From 7d1bdca9b06acb3df07329eaff72d5eaf1543287 Mon Sep 17 00:00:00 2001
From: Balbir Singh <balbir@in.ibm.com>
Date: Sat, 30 Sep 2006 23:28:54 -0700
Subject: [PATCH] [PATCH] Fix getdelays.c - cpumask length and error reporting
Fix the length passed while (un)registering cpumask. We were passing sizeof
the array, make it strlen().
Error value printed in fatal errors should be derived from the message. The
message contains an nlmsgerr embedded with an error value. We must report
that value to the user.
Signed-off-by: Balbir Singh <balbir@in.ibm.com>
Cc: Jamal Hadi <hadi@cyberus.ca>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jay Lan <jlan@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
Documentation/accounting/getdelays.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c
index 795ca3911cc58..b11792abd6b61 100644
--- a/Documentation/accounting/getdelays.c
+++ b/Documentation/accounting/getdelays.c
@@ -285,7 +285,7 @@ int main(int argc, char *argv[])
if (maskset) {
rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET,
TASKSTATS_CMD_ATTR_REGISTER_CPUMASK,
- &cpumask, sizeof(cpumask));
+ &cpumask, strlen(cpumask) + 1);
PRINTF("Sent register cpumask, retval %d\n", rc);
if (rc < 0) {
printf("error sending register cpumask\n");
@@ -315,7 +315,8 @@ int main(int argc, char *argv[])
}
if (msg.n.nlmsg_type == NLMSG_ERROR ||
!NLMSG_OK((&msg.n), rep_len)) {
- printf("fatal reply error, errno %d\n", errno);
+ struct nlmsgerr *err = NLMSG_DATA(&msg);
+ printf("fatal reply error, errno %d\n", err->error);
goto done;
}
@@ -383,7 +384,7 @@ int main(int argc, char *argv[])
if (maskset) {
rc = send_cmd(nl_sd, id, mypid, TASKSTATS_CMD_GET,
TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK,
- &cpumask, sizeof(cpumask));
+ &cpumask, strlen(cpumask) + 1);
printf("Sent deregister mask, retval %d\n", rc);
if (rc < 0)
err(rc, "error sending deregister cpumask\n");
--
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