summaryrefslogtreecommitdiffstats
path: root/src/libnftables.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/libnftables.c')
-rw-r--r--src/libnftables.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/src/libnftables.c b/src/libnftables.c
index e8fa6742..c86d8947 100644
--- a/src/libnftables.c
+++ b/src/libnftables.c
@@ -167,6 +167,7 @@ struct nft_ctx *nft_ctx_new(uint32_t flags)
ctx->parser_max_errors = 10;
init_list_head(&ctx->cache.list);
ctx->flags = flags;
+ ctx->output.output_fp = stdout;
if (flags == NFT_CTX_DEFAULT)
nft_ctx_netlink_init(ctx);
@@ -190,6 +191,9 @@ FILE *nft_ctx_set_output(struct nft_ctx *ctx, FILE *fp)
{
FILE *old = ctx->output.output_fp;
+ if (!fp || ferror(fp))
+ return NULL;
+
ctx->output.output_fp = fp;
return old;
@@ -333,9 +337,6 @@ int nft_print(struct output_ctx *octx, const char *fmt, ...)
int ret;
va_list arg;
- if (!octx->output_fp)
- return -1;
-
va_start(arg, fmt);
ret = vfprintf(octx->output_fp, fmt, arg);
va_end(arg);
@@ -349,9 +350,6 @@ int nft_gmp_print(struct output_ctx *octx, const char *fmt, ...)
int ret;
va_list arg;
- if (!octx->output_fp)
- return -1;
-
va_start(arg, fmt);
ret = gmp_vfprintf(octx->output_fp, fmt, arg);
va_end(arg);