mdadm: Backport and make fixes for building with gcc7

(From OE-Core rev: c901af4574693ede5f1dcbccccc7c5a820b3d659)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 75 insertions, 0 deletions

diff --git a/meta/recipes-extended/mdadm/files/0002-mdadm-Specify-enough-length-when-write-to-buffer.patch b/meta/recipes-extended/mdadm/files/0002-mdadm-Specify-enough-length-when-write-to-buffer.patch
new file mode 100644
index 0000000000..cbce053a3a
--- /dev/null
+++ b/meta/recipes-extended/mdadm/files/0002-mdadm-Specify-enough-length-when-write-to-buffer.patch
@@ -0,0 +1,75 @@
+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
+