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From d25a8222651671613322677d17b2f987135e02cd Mon Sep 17 00:00:00 2001
From: sewn <sewn@disroot.org>
Date: Sat, 24 Aug 2024 19:26:26 +0300
Subject: [PATCH] set max open file descriptors to available max
---
dwl.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/dwl.c b/dwl.c
index a2711f6..163ebdd 100644
--- a/dwl.c
+++ b/dwl.c
@@ -8,6 +8,7 @@
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
+#include <sys/resource.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
@@ -316,6 +317,7 @@ static void pointerfocus(Client *c, struct wlr_surface *surface,
static void printstatus(void);
static void powermgrsetmode(struct wl_listener *listener, void *data);
static void quit(const Arg *arg);
+static void restorerlimit(void);
static void rendermon(struct wl_listener *listener, void *data);
static void requestdecorationmode(struct wl_listener *listener, void *data);
static void requeststartdrag(struct wl_listener *listener, void *data);
@@ -358,6 +360,7 @@ static void zoom(const Arg *arg);
/* variables */
static const char broken[] = "broken";
+static struct rlimit og_rlimit;
static pid_t child_pid = -1;
static int locked;
static void *exclusive_focus;
@@ -2096,6 +2099,15 @@ quit(const Arg *arg)
wl_display_terminate(dpy);
}
+void
+restorerlimit(void)
+{
+ if (og_rlimit.rlim_cur == 0)
+ return;
+ if (setrlimit(RLIMIT_NOFILE, &og_rlimit) < 0)
+ die("setrlimit:");
+}
+
void
rendermon(struct wl_listener *listener, void *data)
{
@@ -2232,6 +2244,7 @@ run(char *startup_cmd)
if ((child_pid = fork()) < 0)
die("startup: fork:");
if (child_pid == 0) {
+ restorerlimit();
setsid();
dup2(piperw[0], STDIN_FILENO);
close(piperw[0]);
@@ -2429,10 +2442,18 @@ setsel(struct wl_listener *listener, void *data)
void
setup(void)
{
+ struct rlimit new_rlimit;
int i, sig[] = {SIGCHLD, SIGINT, SIGTERM, SIGPIPE};
struct sigaction sa = {.sa_flags = SA_RESTART, .sa_handler = handlesig};
sigemptyset(&sa.sa_mask);
+ if (getrlimit(RLIMIT_NOFILE, &og_rlimit) < 0)
+ die("getrlimit:");
+ new_rlimit = og_rlimit;
+ new_rlimit.rlim_cur = new_rlimit.rlim_max;
+ if (setrlimit(RLIMIT_NOFILE, &new_rlimit) < 0)
+ die("setrlimit:");
+
for (i = 0; i < (int)LENGTH(sig); i++)
sigaction(sig[i], &sa, NULL);
@@ -2649,6 +2670,7 @@ void
spawn(const Arg *arg)
{
if (fork() == 0) {
+ restorerlimit();
dup2(STDERR_FILENO, STDOUT_FILENO);
setsid();
execvp(((char **)arg->v)[0], (char **)arg->v);
--
2.46.0
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