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From 2adbe9773cd65c48eec9df96868d4a738927c8d9 Mon Sep 17 00:00:00 2001
From: Chen Qi <Qi.Chen@windriver.com>
Date: Tue, 10 Jul 2018 15:40:17 +0800
Subject: [PATCH 10/22] distinguish XSI-compliant strerror_r from GNU-specifi
strerror_r
XSI-compliant strerror_r and GNU-specifi strerror_r are different.
int strerror_r(int errnum, char *buf, size_t buflen);
/* XSI-compliant */
char *strerror_r(int errnum, char *buf, size_t buflen);
/* GNU-specific */
We need to distinguish between them. Otherwise, we'll get an int value
assigned to (char *) variable, resulting in segment fault.
Upstream-Status: Inappropriate [musl specific]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
src/libsystemd/sd-bus/bus-error.c | 11 ++++++++++-
src/libsystemd/sd-journal/journal-send.c | 5 +++++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/src/libsystemd/sd-bus/bus-error.c b/src/libsystemd/sd-bus/bus-error.c
index 77b2e1a0fd..fdba0e0142 100644
--- a/src/libsystemd/sd-bus/bus-error.c
+++ b/src/libsystemd/sd-bus/bus-error.c
@@ -408,7 +408,12 @@ static void bus_error_strerror(sd_bus_error *e, int error) {
return;
errno = 0;
+#ifndef __GLIBC__
+ strerror_r(error, m, k);
+ x = m;
+#else
x = strerror_r(error, m, k);
+#endif
if (errno == ERANGE || strlen(x) >= k - 1) {
free(m);
k *= 2;
@@ -593,8 +598,12 @@ const char* _bus_error_message(const sd_bus_error *e, int error, char buf[static
if (e && e->message)
return e->message;
-
+#ifndef __GLIBC__
+ strerror_r(abs(error), buf, ERRNO_BUF_LEN);
+ return buf;
+#else
return strerror_r(abs(error), buf, ERRNO_BUF_LEN);
+#endif
}
static bool map_ok(const sd_bus_error_map *map) {
diff --git a/src/libsystemd/sd-journal/journal-send.c b/src/libsystemd/sd-journal/journal-send.c
index 69a2eb6404..1561859650 100644
--- a/src/libsystemd/sd-journal/journal-send.c
+++ b/src/libsystemd/sd-journal/journal-send.c
@@ -361,7 +361,12 @@ static int fill_iovec_perror_and_send(const char *message, int skip, struct iove
char* j;
errno = 0;
+#ifndef __GLIBC__
+ strerror_r(_saved_errno_, buffer + 8 + k, n - 8 - k);
+ j = buffer + 8 + k;
+#else
j = strerror_r(_saved_errno_, buffer + 8 + k, n - 8 - k);
+#endif
if (errno == 0) {
char error[STRLEN("ERRNO=") + DECIMAL_STR_MAX(int) + 1];
--
2.34.1
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