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From bb4df273041ba206008bdb0ada75ccd97c29f623 Mon Sep 17 00:00:00 2001
From: Xiao Ni <xni@redhat.com>
Date: Fri, 17 Mar 2017 19:55:43 +0800
Subject: [PATCH 2/5] mdadm: Specify enough length when write to buffer
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
In Detail.c the buffer path in function Detail is defined as path[200],
in fact the max lenth of content which needs to write to the buffer is
287. Because the length of dname of struct dirent is 255.
During building it reports error:
error: ‘%s’ directive writing up to 255 bytes into a region of size 189
[-Werror=format-overflow=]
In function examine_super0 there is a buffer nb with length 5.
But it need to show a int type argument. The lenght of max
number of int is 10. So the buffer length should be 11.
In human_size function the length of buf is 30. During building
there is a error:
output between 20 and 47 bytes into a destination of size 30.
Change the length to 47.
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
---
Upstream-Status: Backport
Detail.c | 2 +-
super0.c | 2 +-
util.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/Detail.c b/Detail.c
index 509b0d4..cb33794 100644
--- a/Detail.c
+++ b/Detail.c
@@ -575,7 +575,7 @@ This is pretty boring
printf(" Member Arrays :");
while (dir && (de = readdir(dir)) != NULL) {
- char path[200];
+ char path[287];
char vbuf[1024];
int nlen = strlen(sra->sys_name);
dev_t devid;
diff --git a/super0.c b/super0.c
index 938cfd9..f5b4507 100644
--- a/super0.c
+++ b/super0.c
@@ -231,7 +231,7 @@ static void examine_super0(struct supertype *st, char *homehost)
d++) {
mdp_disk_t *dp;
char *dv;
- char nb[5];
+ char nb[11];
int wonly, failfast;
if (d>=0) dp = &sb->disks[d];
else dp = &sb->this_disk;
diff --git a/util.c b/util.c
index f100972..32bd909 100644
--- a/util.c
+++ b/util.c
@@ -811,7 +811,7 @@ unsigned long calc_csum(void *super, int bytes)
#ifndef MDASSEMBLE
char *human_size(long long bytes)
{
- static char buf[30];
+ static char buf[47];
/* We convert bytes to either centi-M{ega,ibi}bytes or
* centi-G{igi,ibi}bytes, with appropriate rounding,
--
2.12.2
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