From a0b7f56b3a3c220b3d8065d7cfdd83a6e3919467 Mon Sep 17 00:00:00 2001 From: Stefano Brivio Date: Fri, 7 Feb 2025 01:51:38 +0100 Subject: passt-repair: Don't use perror(), accept ECONNRESET as termination If we use glibc's perror(), we need to allow dup() and fcntl() in our seccomp profiles, which are a bit too much for this simple helper. On top of that, we would probably need a wrapper to avoid allocation for translated messages. While at it: ECONNRESET is just a close() from passt, treat it like EOF. Signed-off-by: Stefano Brivio Reviewed-by: David Gibson --- passt-repair.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/passt-repair.c b/passt-repair.c index 3c3247b..d137a18 100644 --- a/passt-repair.c +++ b/passt-repair.c @@ -95,7 +95,7 @@ int main(int argc, char **argv) } if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { - perror("Failed to create AF_UNIX socket"); + fprintf(stderr, "Failed to create AF_UNIX socket: %i\n", errno); _exit(1); } @@ -108,8 +108,12 @@ int main(int argc, char **argv) loop: ret = recvmsg(s, &msg, 0); if (ret < 0) { - perror("Failed to receive message"); - _exit(1); + if (errno == ECONNRESET) { + ret = 0; + } else { + fprintf(stderr, "Failed to read message: %i\n", errno); + _exit(1); + } } if (!ret) /* Done */ -- cgit v1.2.3