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-rw-r--r--src/libsystemd/sd-bus/bus-error.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libsystemd/sd-bus/bus-error.c b/src/libsystemd/sd-bus/bus-error.c
index cfb8d147a7..47f90c26f8 100644
--- a/src/libsystemd/sd-bus/bus-error.c
+++ b/src/libsystemd/sd-bus/bus-error.c
@@ -444,6 +444,7 @@ _public_ int sd_bus_error_set_errno(sd_bus_error *e, int error) {
}
int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_list ap) {
+ PROTECT_ERRNO;
int r;
if (error < 0)
@@ -477,8 +478,9 @@ int bus_error_set_errnofv(sd_bus_error *e, int error, const char *format, va_lis
if (format) {
char *m;
- /* First, let's try to fill in the supplied message */
+ /* Then, let's try to fill in the supplied message */
+ errno = error; /* Make sure that %m resolves to the specified error */
r = vasprintf(&m, format, ap);
if (r >= 0) {