Before doing an early exit any contents of stdout is normally flushed.
This doesn't happen when the output goes into a pipe and we return with
_exit(). We now add an explicit flush in such cases.
Fixes: d0006fa784a7 ("treewide: use _exit() over exit()")
Signed-off-by: Jon Maloy
---
conf.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/conf.c b/conf.c
index a6d7e22..a1d55a3 100644
--- a/conf.c
+++ b/conf.c
@@ -975,6 +975,7 @@ static void usage(const char *name, FILE *f, int status)
" SPEC is as described for TCP above\n"
" default: none\n");
+ fflush(f);
_exit(status);
pasta_opts:
@@ -1029,6 +1030,7 @@ pasta_opts:
" --ns-mac-addr ADDR Set MAC address on tap interface\n"
" --no-splice Disable inbound socket splicing\n");
+ fflush(f);
_exit(status);
}
@@ -1594,6 +1596,7 @@ void conf(struct ctx *c, int argc, char **argv)
FPRINTF(stdout,
c->mode == MODE_PASTA ? "pasta " : "passt ");
FPRINTF(stdout, VERSION_BLOB);
+ fflush(stdout);
_exit(EXIT_SUCCESS);
case 15:
ret = snprintf(c->ip4.ifname_out,
--
2.48.1