logging: Turn some warnings into info messages

Author: nviennot

Diff for: compel/arch/x86/src/lib/infect.c

@@ -337,7 +337,7 @@ int compel_get_task_regs(pid_t pid, user_regs_struct_t *regs, user_fpregs_struct
 			set_user_reg(regs, ip, get_user_reg(regs, ip) - 2);
 			break;
 		case -ERESTART_RESTARTBLOCK:
-			pr_warn("Will restore %d with interrupted system call\n", pid);
+			pr_info("Will restore %d with interrupted system call\n", pid);
 			set_user_reg(regs, ax, -EINTR);
 			break;
 		}

Diff for: criu/cr-check.c

@@ -1527,7 +1527,8 @@ int cr_check(void)
 		ret |= check_compat_cr();
 	}
 
-	pr_msg("%s\n", ret ? CHECK_MAYBE : CHECK_GOOD);
+	if (ret)
+		pr_msg("%s\n", CHECK_MAYBE);
 	return ret;
 }
 #undef CHECK_GOOD

Diff for: criu/cr-restore.c

@@ -829,7 +829,7 @@ static int prepare_oom_score_adj(int value)
 	snprintf(buf, 11, "%d", value);
 
 	if (write(fd, buf, 11) < 0) {
-		pr_perror("Write %s to /proc/self/oom_score_adj failed", buf);
+		pr_info("Write %s to /proc/self/oom_score_adj failed: %s", buf, strerror(errno));
 		ret = -1;
 	}
 

Diff for: criu/kerndat.c

@@ -895,7 +895,7 @@ static void kerndat_save_cache(void)
 		return;
 
 	if (fstatfs(fd, &s) < 0 || s.f_type != TMPFS_MAGIC) {
-		pr_warn("Can't keep kdat cache on non-tempfs\n");
+		pr_info("Can't keep kdat cache on non-tempfs\n");
 		close(fd);
 		goto unl;
 	}
@@ -1116,7 +1116,7 @@ static int kerndat_has_pidfd_getfd(void)
 
 	pidfd = syscall(SYS_pidfd_open, getpid(), 0);
 	if (pidfd == -1) {
-		pr_warn("Can't get pidfd\n");
+		pr_info("Can't get pidfd\n");
 		/*
 		 * If pidfd_open is not supported then pidfd_getfd
 		 * will not be supported as well.
@@ -1233,7 +1233,7 @@ static int kerndat_has_nftables_concat(void)
 	kdat.has_nftables_concat = has;
 	return 0;
 #else
-	pr_warn("CRIU was built without libnftables support\n");
+	pr_info("CRIU was built without libnftables support\n");
 	kdat.has_nftables_concat = false;
 	return 0;
 #endif

Diff for: criu/proc_parse.c

@@ -929,7 +929,7 @@ int prepare_loginuid(unsigned int value)
 	snprintf(buf, 11, "%u", value);
 
 	if (write(fd, buf, 11) < 0) {
-		pr_warn("Write %s to /proc/self/loginuid failed: %s\n", buf, strerror(errno));
+		pr_info("Write %s to /proc/self/loginuid failed: %s\n", buf, strerror(errno));
 		ret = -1;
 	}
 	close(fd);

Diff for: criu/sk-inet.c

@@ -147,7 +147,7 @@ static int can_dump_inet_sk(const struct inet_sk_desc *sk)
 		}
 
 		if (sk->rqlen)
-			pr_warn("Read queue is dropped for socket %x\n", sk->sd.ino);
+			pr_info("Read queue is dropped for socket %x\n", sk->sd.ino);
 
 		return 1;
 	}