nixpkgs/pkgs/os-specific/linux/systemd/libc-bug-accept4-arm.patch

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Based on a patch for udev in
nixpkgs(upstart)/pkgs/os-specific/linux/udev/pre-accept4-kernel.patch
It was taken from:
https://github.com/archlinuxarm/PKGBUILDs/blob/master/core/udev-oxnas/pre-accept4-kernel.patch
Basically, ARM implemented accept4() only in 2.6.36. Nixpkgs now uses
linux headers from 2.6.35. And the particular nixpkgs glibc version had a bug,
not checking about 2.6.36 for accept4 on arm.
diff --git a/src/journal/journald-stream.c b/src/journal/journald-stream.c
index 7b88f74..a9f7b62 100644
--- a/src/journal/journald-stream.c
+++ b/src/journal/journald-stream.c
@@ -347,10 +347,12 @@ int stdout_stream_new(Server *s) {
int fd, r;
socklen_t len;
struct epoll_event ev;
+ int flgs;
assert(s);
- fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
+ //fd = accept4(s->stdout_fd, NULL, NULL, SOCK_NONBLOCK|SOCK_CLOEXEC);
+ fd = accept(s->stdout_fd, NULL, NULL);
if (fd < 0) {
if (errno == EAGAIN)
return 0;
@@ -359,6 +361,11 @@ int stdout_stream_new(Server *s) {
return -errno;
}
+ // Since we don't have accept4
+ flgs = fcntl(fd, F_GETFL, NULL);
+ if(flgs >= 0) fcntl(fd, F_SETFL, flgs | O_NONBLOCK);
+ fcntl(fd, F_SETFD, FD_CLOEXEC);
+
if (s->n_stdout_streams >= STDOUT_STREAMS_MAX) {
log_warning("Too many stdout streams, refusing connection.");
close_nointr_nofail(fd);
diff --git a/src/udev/udev-ctrl.c b/src/udev/udev-ctrl.c
index a235912..c05e4b4 100644
--- a/src/udev/udev-ctrl.c
+++ b/src/udev/udev-ctrl.c
@@ -15,6 +15,7 @@
#include <stddef.h>
#include <string.h>
#include <unistd.h>
+#include <fcntl.h>
#include <sys/types.h>
#include <sys/poll.h>
#include <sys/socket.h>
@@ -181,6 +182,7 @@ struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl)
struct ucred ucred;
socklen_t slen;
const int on = 1;
+ int flgs;
conn = calloc(1, sizeof(struct udev_ctrl_connection));
if (conn == NULL)
@@ -188,13 +190,19 @@ struct udev_ctrl_connection *udev_ctrl_get_connection(struct udev_ctrl *uctrl)
conn->refcount = 1;
conn->uctrl = uctrl;
- conn->sock = accept4(uctrl->sock, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
+ //conn->sock = accept4(uctrl->sock, NULL, NULL, SOCK_CLOEXEC|SOCK_NONBLOCK);
+ conn->sock = accept(uctrl->sock, NULL, NULL);
if (conn->sock < 0) {
if (errno != EINTR)
log_error("unable to receive ctrl connection: %m\n");
goto err;
}
+ // Since we don't have accept4
+ flgs = fcntl(conn->sock, F_GETFL, NULL);
+ if(flgs >= 0) fcntl(conn->sock, F_SETFL, flgs | O_NONBLOCK);
+ fcntl(conn->sock, F_SETFD, FD_CLOEXEC);
+
/* check peer credential of connection */
slen = sizeof(ucred);
if (getsockopt(conn->sock, SOL_SOCKET, SO_PEERCRED, &ucred, &slen) < 0) {