From 5221edaee281175e3a8ba3e676ba5622085eb1ef Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 26 Sep 2023 09:52:05 +0200 Subject: [PATCH] udev: raise RLIMIT_NOFILE as high as we can We might need a lot of fds on large systems, hence raise RLIMIT_NOFILE to what the service manager allows us, which is quite a lot these days. udev already sets FORK_RLIMIT_NOFILE_SAFE when forking of chilren, thus ensuring that forked off processes get their RLIMIT_NOFILE soft limit reset to 1K for compat with crappy old select(). Replaces: #29298 Fixes: #28583 (cherry picked from commit 1617424ce76d797d081dd6cb1082b954c4d2bf38) Resolves: RHEL-11040 --- src/udev/udevd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/udev/udevd.c b/src/udev/udevd.c index e3a2742733..ccc3c0eece 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -55,6 +55,7 @@ #include "pretty-print.h" #include "proc-cmdline.h" #include "process-util.h" +#include "rlimit-util.h" #include "selinux-util.h" #include "signal-util.h" #include "socket-util.h" @@ -2040,6 +2041,9 @@ int run_udevd(int argc, char *argv[]) { if (r < 0) return r; + /* Make sure we can have plenty fds (for example for pidfds) */ + (void) rlimit_nofile_bump(-1); + r = RET_NERRNO(mkdir("/run/udev", 0755)); if (r < 0 && r != -EEXIST) return log_error_errno(r, "Failed to create /run/udev: %m");