sk-inet: add extra debugging information to sk-inet

Signed-off-by: समीर सिंह Sameer Singh <[email protected]>

criu/sk-inet.c

@@ -595,6 +595,7 @@ static int do_dump_one_inet_fd(int lfd, u32 id, const struct fd_parms *p, int fa
 		ie.ping_grp_range = buffer;
 	}
 
+	pr_perror("dump ping_group_range: %s", ie.ping_grp_range);
 	pr_info("Dumping inet socket at %d\n", p->fd);
 	show_one_inet("Dumping", sk);
 	show_one_inet_img("Dumped", &ie);
@@ -911,6 +912,27 @@ static int open_inet_sk(struct file_desc *d, int *new_fd)
 
 	sk = socket(ie->family, ie->type, ie->proto);
 	if (sk < 0) {
+		int ret;
+		gid_t current_gid;
+		char buffer[16];
+
+		struct sysctl_req req[] = {
+			{ "net/ipv4/ping_group_range", &buffer, CTL_STR(16) },
+		};
+
+		ret = sysctl_op(req, ARRAY_SIZE(req), CTL_READ, CLONE_NEWNET);
+		if (ret < 0) {
+			pr_perror("Failed to read ping group range");
+			goto err;
+		}
+
+		buffer[strlen(buffer)] = '\0';
+
+		current_gid = getgid();
+
+		pr_perror("current gid: %d", current_gid);
+		pr_perror("current ping_group_range: %s", buffer);
+		pr_perror("restore ping_group_range: %s", ie->ping_grp_range);
 		pr_perror("Can't create inet socket");
 		return -1;
 	}