From 468d09b6641272d02ab80760fe0a55e8aab03c2e Mon Sep 17 00:00:00 2001 From: emersion Date: Tue, 19 Feb 2019 16:18:31 +0100 Subject: Don't use SOCK_CLOEXEC Manually set the CLOEXEC flag instead, since SOCK_CLOEXEC isn't POSIX. --- sway/config/output.c | 36 +++++++++++++++++++++++++++--------- 1 file changed, 27 insertions(+), 9 deletions(-) diff --git a/sway/config/output.c b/sway/config/output.c index 513d03e0..e7fbad83 100644 --- a/sway/config/output.c +++ b/sway/config/output.c @@ -175,12 +175,33 @@ static void handle_swaybg_client_destroy(struct wl_listener *listener, output->swaybg_client = NULL; } +static bool set_cloexec(int fd, bool cloexec) { + int flags = fcntl(fd, F_GETFD); + if (flags == -1) { + sway_log_errno(SWAY_ERROR, "fcntl failed"); + return false; + } + if (cloexec) { + flags = flags | FD_CLOEXEC; + } else { + flags = flags & ~FD_CLOEXEC; + } + if (fcntl(fd, F_SETFD, flags) == -1) { + sway_log_errno(SWAY_ERROR, "fcntl failed"); + return false; + } + return true; +} + static bool spawn_swaybg(struct sway_output *output, char *const cmd[]) { int sockets[2]; - if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sockets) != 0) { + if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockets) != 0) { sway_log_errno(SWAY_ERROR, "socketpair failed"); return false; } + if (!set_cloexec(sockets[0], true) || !set_cloexec(sockets[1], true)) { + return false; + } output->swaybg_client = wl_client_create(server.wl_display, sockets[0]); if (output->swaybg_client == NULL) { @@ -202,14 +223,7 @@ static bool spawn_swaybg(struct sway_output *output, char *const cmd[]) { sway_log_errno(SWAY_ERROR, "fork failed"); exit(EXIT_FAILURE); } else if (pid == 0) { - // Remove the CLOEXEC flag - int flags = fcntl(sockets[1], F_GETFD); - if (flags == -1) { - sway_log_errno(SWAY_ERROR, "fcntl() failed"); - exit(EXIT_FAILURE); - } - if (fcntl(sockets[1], F_SETFD, flags & ~FD_CLOEXEC) == -1) { - sway_log_errno(SWAY_ERROR, "fcntl() failed"); + if (!set_cloexec(sockets[1], false)) { exit(EXIT_FAILURE); } @@ -225,6 +239,10 @@ static bool spawn_swaybg(struct sway_output *output, char *const cmd[]) { exit(EXIT_SUCCESS); } + if (close(sockets[1]) != 0) { + sway_log_errno(SWAY_ERROR, "close failed"); + return false; + } if (waitpid(pid, NULL, 0) < 0) { sway_log_errno(SWAY_ERROR, "waitpid failed"); return false; -- cgit v1.2.3-54-g00ecf