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Set O_CLOEXEC on the remaining FDs that are created by eventcore.

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This commit is contained in:
Sönke Ludwig 2017-12-19 18:44:22 +01:00
parent 324338205b
commit 6e2938297b
4 changed files with 13 additions and 8 deletions
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7
source/eventcore/drivers/posix/events.d
View file

@ -64,6 +64,9 @@ final class PosixEventDriverEvents(Loop : PosixEventLoop, Sockets : EventDriverS
} else {
sock_t[2] fd;
version (Posix) {
import core.sys.posix.fcntl : fcntl, F_SETFL;
import eventcore.drivers.posix.sockets : O_CLOEXEC;
// create a pair of sockets to communicate between threads
import core.sys.posix.sys.socket : SOCK_DGRAM, AF_UNIX, socketpair;
if (() @trusted { return socketpair(AF_UNIX, SOCK_DGRAM, 0, fd); } () != 0)
@ -72,7 +75,9 @@ final class PosixEventDriverEvents(Loop : PosixEventLoop, Sockets : EventDriverS
assert(fd[0] != fd[1]);
// use the first socket as the async receiver
auto s = m_sockets.adoptDatagramSocketInternal(fd[0]);
auto s = m_sockets.adoptDatagramSocketInternal(fd[0], true, true);
() @trusted { fcntl(fd[1], F_SETFL, O_CLOEXEC); } ();
} else {
// fake missing socketpair support on Windows
import std.socket : InternetAddress;

8
source/eventcore/drivers/posix/signals.d
View file

@ -33,7 +33,7 @@ final class SignalFDEventDriverSignals(Loop : PosixEventLoop) : EventDriverSigna
if (sigprocmask(SIG_BLOCK, &sset, null) != 0)
return SignalListenID.invalid;
return SignalListenID(signalfd(-1, &sset, SFD_NONBLOCK));
return SignalListenID(signalfd(-1, &sset, SFD_NONBLOCK | SFD_CLOEXEC));
} ();
@ -52,7 +52,7 @@ final class SignalFDEventDriverSignals(Loop : PosixEventLoop) : EventDriverSigna
assert(m_loop.m_fds[descriptor].common.refCount > 0, "Adding reference to unreferenced event FD.");
m_loop.m_fds[descriptor].common.refCount++;
}
override bool releaseRef(SignalListenID descriptor)
{
FD fd = cast(FD)descriptor;
@ -71,7 +71,7 @@ final class SignalFDEventDriverSignals(Loop : PosixEventLoop) : EventDriverSigna
SignalListenID lid = cast(SignalListenID)fd;
signalfd_siginfo nfo;
do {
auto ret = () @trusted { return read(cast(int)fd, &nfo, nfo.sizeof); } ();
auto ret = () @trusted { return read(cast(int)fd, &nfo, nfo.sizeof); } ();
if (ret == -1 && errno.among!(EAGAIN, EINPROGRESS))
break;
auto cb = m_loop.m_fds[fd].signal.callback;
@ -107,7 +107,7 @@ final class DummyEventDriverSignals(Loop : PosixEventLoop) : EventDriverSignals
{
assert(false);
}
override bool releaseRef(SignalListenID descriptor)
{
assert(false);

4
source/eventcore/drivers/posix/sockets.d
View file

@ -595,12 +595,12 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
return adoptDatagramSocketInternal(socket, false);
}
package DatagramSocketFD adoptDatagramSocketInternal(int socket, bool is_internal = true)
package DatagramSocketFD adoptDatagramSocketInternal(int socket, bool is_internal = true, bool close_on_exec = false)
{
auto fd = DatagramSocketFD(socket);
if (m_loop.m_fds[fd].common.refCount) // FD already in use?
return DatagramSocketFD.init;
setSocketNonBlocking(fd);
setSocketNonBlocking(fd, close_on_exec);
m_loop.initFD(fd, is_internal ? FDFlags.internal : FDFlags.none);
m_loop.registerFD(fd, EventMask.read|EventMask.write|EventMask.status);
m_loop.m_fds[fd].specific = DgramSocketSlot.init;

2
source/eventcore/drivers/posix/watchers.d
View file

@ -34,7 +34,7 @@ final class InotifyEventDriverWatchers(Events : EventDriverEvents) : EventDriver
import std.range.primitives : walkLength;
enum IN_NONBLOCK = 0x800; // value in core.sys.linux.sys.inotify is incorrect
auto handle = () @trusted { return inotify_init1(IN_NONBLOCK); } ();
auto handle = () @trusted { return inotify_init1(IN_NONBLOCK | IN_CLOEXEC); } ();
if (handle == -1) return WatcherID.invalid;
auto ret = WatcherID(handle);