[OpenWrt-Devel] [PATCH 2/2] Attempt to deal gracefully with allocation failures.
Juliusz Chroboczek
jch at pps.univ-paris-diderot.fr
Thu Jun 25 18:23:33 EDT 2015
These should probably not happen in practice, but having an explicit
error message may make debugging out-of-memory situations easier.
---
rcS.c | 9 +++++++++
system.c | 5 +++++
2 files changed, 14 insertions(+)
diff --git a/rcS.c b/rcS.c
index 1e8b676..d9bd4f4 100644
--- a/rcS.c
+++ b/rcS.c
@@ -117,6 +117,10 @@ static void add_initd(struct runqueue *q, char *file, char *param)
char *p, *f;
s = calloc_a(sizeof(*s), &f, strlen(file) + 1, &p, strlen(param) + 1);
+ if (!s) {
+ ERROR("Out of memory in %s.\n", file);
+ return;
+ }
s->proc.task.type = &initd_type;
s->proc.task.complete = q_initd_complete;
if (!strcmp(param, "stop") || !strcmp(param, "shutdown"))
@@ -134,6 +138,11 @@ static int _rc(struct runqueue *q, char *path, const char *file, char *pattern,
glob_t gl;
int j;
+ if (!dir) {
+ ERROR("Out of memory in %s.\n", file);
+ return -1;
+ }
+
DEBUG(2, "running %s/%s%s %s\n", path, file, pattern, param);
sprintf(dir, "%s/%s%s", path, file, pattern);
if (glob(dir, GLOB_NOESCAPE | GLOB_MARK, NULL, &gl)) {
diff --git a/system.c b/system.c
index 77111f9..82c672e 100644
--- a/system.c
+++ b/system.c
@@ -144,6 +144,11 @@ static int system_board(struct ubus_context *ctx, struct ubus_object *obj,
continue;
dest = blobmsg_alloc_string_buffer(&b, key, strlen(val));
+ if (!dest) {
+ ERROR("Failed to allocate blob.\n");
+ continue;
+ }
+
while (val && (ch = *(val++)) != 0) {
switch (ch) {
case '\'':
--
2.1.4
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