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authorJason Wessel <jason.wessel@windriver.com>2018-06-15 08:19:23 -0700
committerBruce Ashfield <bruce.ashfield@windriver.com>2018-06-19 12:29:33 -0400
commit646259f4d50bdfc0bd3d6ebd9c20bd8bd7251310 (patch)
tree04b0f2270000b954d77068e56b4086db96a30f17
parent8af86bc72dc7313d8a81e0e8897efbd044575b15 (diff)
downloadmeta-virtualization-646259f4d50bdfc0bd3d6ebd9c20bd8bd7251310.tar.gz
hyperstart: Fix compiler errors from gcc 8.1.0 uprev
The patch to hypterstart was also submitted to the upstream project. It fixes these errors/warnings: container.c: In function 'hyper_setup_container_rootfs': container.c:630:24: error: '/' directive writing 1 byte into a region of size between 0 and 511 [-Werror=format-overflow=] sprintf(rootfs, "%s/%s/", root, container->rootfs); ^ container.c:630:2: note: 'sprintf' output 3 or more bytes (assuming 514) into a destination of size 512 sprintf(rootfs, "%s/%s/", root, container->rootfs); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ container.c:262:18: error: '%s' directive writing up to 511 bytes into a region of size 510 [-Werror=format-overflow=] sprintf(dst, "./%s", src); ^~ ~~~ container.c:262:2: note: 'sprintf' output between 3 and 514 bytes into a destination of size 512 sprintf(dst, "./%s", src); ^~~~~~~~~~~~~~~~~~~~~~~~~ container.c:218:24: error: '/_data' directive writing 6 bytes into a region of size between 1 and 512 [-Werror=format-overflow=] sprintf(volume, "%s/_data", path); ^~~~~~ container.c:218:5: note: 'sprintf' output between 7 and 518 bytes into a destination of size 512 sprintf(volume, "%s/_data", path); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ container.c:149:24: error: '/_data' directive writing 6 bytes into a region of size between 0 and 511 [-Werror=format-overflow=] sprintf(volume, "/%s/_data", path); ^~~~~~ container.c:149:4: note: 'sprintf' output between 8 and 519 bytes into a destination of size 512 sprintf(volume, "/%s/_data", path); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ container.c:131:24: error: '/' directive writing 1 byte into a region of size between 0 and 511 [-Werror=format-overflow=] sprintf(volume, "/%s/", path); ^ container.c:131:4: note: 'sprintf' output between 3 and 514 bytes into a destination of size 512 sprintf(volume, "/%s/", path); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ container.c:176:24: error: '/_data/' directive writing 7 bytes into a region of size between 0 and 511 [-Werror=format-overflow=] sprintf(volume, "/%s/_data/%s", path, filevolume); ^~~~~~~ container.c:176:4: note: 'sprintf' output 9 or more bytes (assuming 520) into a destination of size 512 sprintf(volume, "/%s/_data/%s", path, filevolume); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Diffstat
-rw-r--r--recipes-extended/hyperstart/hyperstart/0001-container.c-Fix-compiler-errors-that-gcc-8.1.0-repor.patch230
-rw-r--r--recipes-extended/hyperstart/hyperstart_git.bb1
2 files changed, 231 insertions, 0 deletions
diff --git a/recipes-extended/hyperstart/hyperstart/0001-container.c-Fix-compiler-errors-that-gcc-8.1.0-repor.patch b/recipes-extended/hyperstart/hyperstart/0001-container.c-Fix-compiler-errors-that-gcc-8.1.0-repor.patch
new file mode 100644
index 00000000..4a01de5b
--- /dev/null
+++ b/recipes-extended/hyperstart/hyperstart/0001-container.c-Fix-compiler-errors-that-gcc-8.1.0-repor.patch
@@ -0,0 +1,230 @@
1From 11f5089300c1c368d896c95890827dc85a67f132 Mon Sep 17 00:00:00 2001
2From: Jason Wessel <jason.wessel@windriver.com>
3Date: Fri, 15 Jun 2018 08:04:35 -0700
4Subject: [PATCH] container.c: Fix compiler errors that gcc 8.1.0 reports
5
6gcc 8.1.0 reports the following compiler errors/warnings. They can be
7fixed by using snprintf and checking the result for truncation. This
8patch also uses a named constant instead of inserting the value 512 in
9many locations.
10
11container.c: In function 'hyper_setup_container_rootfs':
12container.c:630:24: error: '/' directive writing 1 byte into a region of size between 0 and 511 [-Werror=format-overflow=]
13 sprintf(rootfs, "%s/%s/", root, container->rootfs);
14 ^
15container.c:630:2: note: 'sprintf' output 3 or more bytes (assuming 514) into a destination of size 512
16 sprintf(rootfs, "%s/%s/", root, container->rootfs);
17 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
18container.c:262:18: error: '%s' directive writing up to 511 bytes into a region of size 510 [-Werror=format-overflow=]
19 sprintf(dst, "./%s", src);
20 ^~ ~~~
21container.c:262:2: note: 'sprintf' output between 3 and 514 bytes into a destination of size 512
22 sprintf(dst, "./%s", src);
23 ^~~~~~~~~~~~~~~~~~~~~~~~~
24container.c:218:24: error: '/_data' directive writing 6 bytes into a region of size between 1 and 512 [-Werror=format-overflow=]
25 sprintf(volume, "%s/_data", path);
26 ^~~~~~
27container.c:218:5: note: 'sprintf' output between 7 and 518 bytes into a destination of size 512
28 sprintf(volume, "%s/_data", path);
29 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
30container.c:149:24: error: '/_data' directive writing 6 bytes into a region of size between 0 and 511 [-Werror=format-overflow=]
31 sprintf(volume, "/%s/_data", path);
32 ^~~~~~
33container.c:149:4: note: 'sprintf' output between 8 and 519 bytes into a destination of size 512
34 sprintf(volume, "/%s/_data", path);
35 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
36container.c:131:24: error: '/' directive writing 1 byte into a region of size between 0 and 511 [-Werror=format-overflow=]
37 sprintf(volume, "/%s/", path);
38 ^
39container.c:131:4: note: 'sprintf' output between 3 and 514 bytes into a destination of size 512
40 sprintf(volume, "/%s/", path);
41 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
42container.c:176:24: error: '/_data/' directive writing 7 bytes into a region of size between 0 and 511 [-Werror=format-overflow=]
43 sprintf(volume, "/%s/_data/%s", path, filevolume);
44 ^~~~~~~
45container.c:176:4: note: 'sprintf' output 9 or more bytes (assuming 520) into a destination of size 512
46 sprintf(volume, "/%s/_data/%s", path, filevolume);
47 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
48
49Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
50---
51 src/container.c | 47 ++++++++++++++++++++++++++++-------------------
52 1 file changed, 28 insertions(+), 19 deletions(-)
53
54diff --git a/src/container.c b/src/container.c
55index 0938d82..b1c52d4 100644
56--- a/src/container.c
57+++ b/src/container.c
58@@ -22,6 +22,8 @@
59 #include "syscall.h"
60 #include "netlink.h"
61
62+#define MAX_PBUF 512
63+
64 static int container_populate_volume(char *src, char *dest)
65 {
66 struct stat st;
67@@ -99,12 +101,12 @@ static int container_setup_volume(struct hyper_pod *pod,
68 struct hyper_container *container)
69 {
70 int i;
71- char dev[512], path[512];
72+ char dev[MAX_PBUF], path[MAX_PBUF];
73 struct volume *vol;
74
75 for (i = 0; i < container->vols_num; i++) {
76- char volume[512];
77- char mountpoint[512];
78+ char volume[MAX_PBUF];
79+ char mountpoint[MAX_PBUF];
80 char *options = NULL;
81 const char *filevolume = NULL;
82 vol = &container->vols[i];
83@@ -128,7 +130,8 @@ static int container_setup_volume(struct hyper_pod *pod,
84 if (hyper_mount_nfs(vol->device, path) < 0)
85 return -1;
86 /* nfs export has implicitly included _data part of the volume */
87- sprintf(volume, "/%s/", path);
88+ if (snprintf(volume, MAX_PBUF, "/%s/", path) >= MAX_PBUF)
89+ return -1;
90 } else {
91 fprintf(stdout, "mount %s to %s, tmp path %s\n",
92 dev, vol->mountpoint, path);
93@@ -137,7 +140,7 @@ static int container_setup_volume(struct hyper_pod *pod,
94 options = "nouuid";
95
96 if (access(dev, R_OK) < 0) {
97- char device[512];
98+ char device[MAX_PBUF];
99 sprintf(device, "/block/%s", vol->device);
100 hyper_netlink_wait_dev(pod->ueventfd, device);
101 }
102@@ -146,7 +149,8 @@ static int container_setup_volume(struct hyper_pod *pod,
103 perror("mount volume device failed");
104 return -1;
105 }
106- sprintf(volume, "/%s/_data", path);
107+ if (snprintf(volume, MAX_PBUF, "/%s/_data", path) >= MAX_PBUF)
108+ return -1;
109 }
110
111 if (container_check_file_volume(volume, &filevolume) < 0)
112@@ -173,7 +177,8 @@ static int container_setup_volume(struct hyper_pod *pod,
113 perror("create volume file failed");
114 return -1;
115 }
116- sprintf(volume, "/%s/_data/%s", path, filevolume);
117+ if (snprintf(volume, MAX_PBUF, "/%s/_data/%s", path, filevolume) >= MAX_PBUF)
118+ return -1;
119 /* 0777 so that any user can read/write the new file volume */
120 if (chmod(volume, 0777) < 0) {
121 fprintf(stderr, "fail to chmod directory %s\n", volume);
122@@ -197,9 +202,9 @@ static int container_setup_volume(struct hyper_pod *pod,
123
124 for (i = 0; i < container->maps_num; i++) {
125 struct stat st;
126- char *src, path[512], volume[512];
127+ char *src, path[MAX_PBUF], volume[MAX_PBUF];
128 struct fsmap *map = &container->maps[i];
129- char mountpoint[512];
130+ char mountpoint[MAX_PBUF];
131
132 sprintf(path, "%s/%s", SHARED_DIR, map->source);
133 sprintf(mountpoint, "./%s", map->path);
134@@ -215,7 +220,8 @@ static int container_setup_volume(struct hyper_pod *pod,
135 }
136 if (map->docker) {
137 /* converted from volume */
138- sprintf(volume, "%s/_data", path);
139+ if (snprintf(volume, MAX_PBUF, "%s/_data", path) >= MAX_PBUF)
140+ return -1;
141 src = volume;
142 if (container->initialize &&
143 (container_populate_volume(mountpoint, volume) < 0)) {
144@@ -251,7 +257,7 @@ static int container_setup_modules(struct hyper_container *container)
145 {
146 struct stat st;
147 struct utsname uts;
148- char src[512], dst[512];
149+ char src[MAX_PBUF], dst[MAX_PBUF];
150
151 if (uname(&uts) < 0) {
152 perror("fail to call uname");
153@@ -259,7 +265,8 @@ static int container_setup_modules(struct hyper_container *container)
154 }
155
156 sprintf(src, "/lib/modules/%s", uts.release);
157- sprintf(dst, "./%s", src);
158+ if (snprintf(dst, MAX_PBUF, "./%s", src) >= MAX_PBUF)
159+ return -1;
160
161 if (stat(dst, &st) == 0) {
162 struct dirent **list;
163@@ -291,7 +298,7 @@ static int container_setup_modules(struct hyper_container *container)
164
165 static int container_setup_mount(struct hyper_container *container)
166 {
167- char src[512];
168+ char src[MAX_PBUF];
169
170 // current dir is container rootfs, the operations on "./PATH" are the operations on container's "/PATH"
171 if (!container->readonly) {
172@@ -546,7 +553,7 @@ static int hyper_setup_container_rootfs(void *data)
173 {
174 struct hyper_container_arg *arg = data;
175 struct hyper_container *container = arg->c;
176- char root[512], rootfs[512];
177+ char root[MAX_PBUF], rootfs[MAX_PBUF];
178 int setup_dns;
179
180 /* wait for ns-opened ready message */
181@@ -609,7 +616,7 @@ static int hyper_setup_container_rootfs(void *data)
182 goto fail;
183 }
184 } else {
185- char path[512];
186+ char path[MAX_PBUF];
187
188 sprintf(path, "%s/%s/", SHARED_DIR, container->image);
189 fprintf(stdout, "src directory %s\n", path);
190@@ -627,7 +634,9 @@ static int hyper_setup_container_rootfs(void *data)
191 fprintf(stdout, "root directory for container is %s/%s, init task %s\n",
192 root, container->rootfs, container->exec.argv[0]);
193
194- sprintf(rootfs, "%s/%s/", root, container->rootfs);
195+ if (snprintf(rootfs, MAX_PBUF, "%s/%s/", root, container->rootfs) >= MAX_PBUF)
196+ goto fail;
197+
198 if (mount(rootfs, rootfs, NULL, MS_BIND|MS_REC, NULL) < 0) {
199 perror("failed to bind rootfs");
200 goto fail;
201@@ -710,7 +719,7 @@ fail:
202
203 static int hyper_setup_pty(struct hyper_container *c)
204 {
205- char root[512];
206+ char root[MAX_PBUF];
207
208 sprintf(root, "/tmp/hyper/%s/devpts/", c->id);
209
210@@ -730,7 +739,7 @@ static int hyper_setup_pty(struct hyper_container *c)
211
212 static void hyper_cleanup_pty(struct hyper_container *c)
213 {
214- char path[512];
215+ char path[MAX_PBUF];
216
217 sprintf(path, "/tmp/hyper/%s/devpts/", c->id);
218 if (umount(path) < 0)
219@@ -739,7 +748,7 @@ static void hyper_cleanup_pty(struct hyper_container *c)
220
221 int container_prepare_rootfs_dev(struct hyper_container *container, struct hyper_pod *pod)
222 {
223- char dev[512];
224+ char dev[MAX_PBUF];
225
226 if (container->fstype == NULL)
227 return 0;
228--
2292.17.1
230
diff --git a/recipes-extended/hyperstart/hyperstart_git.bb b/recipes-extended/hyperstart/hyperstart_git.bb
index 02974772..99c21952 100644
--- a/recipes-extended/hyperstart/hyperstart_git.bb
+++ b/recipes-extended/hyperstart/hyperstart_git.bb
@@ -7,6 +7,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=fa818a259cbed7ce8bc2a22d35a464fc"
7inherit autotools-brokensep 7inherit autotools-brokensep
8 8
9SRC_URI = "git://github.com/hyperhq/hyperstart.git" 9SRC_URI = "git://github.com/hyperhq/hyperstart.git"
10SRC_URI += "file://0001-container.c-Fix-compiler-errors-that-gcc-8.1.0-repor.patch"
10 11
11SRCREV = "ad48a3230836f59ada163659cde151a37522068b" 12SRCREV = "ad48a3230836f59ada163659cde151a37522068b"
12PV = "v0.2+git${SRCREV}" 13PV = "v0.2+git${SRCREV}"
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-10-25 02:12:38 +0000