nexoniarz/SchOS
nexoniarz/SchOS
Watch
1
0
Fork
You've already forked SchOS
 0
Code Issues Pull requests Projects Releases 1 Packages Wiki Activity Actions

epoll, eventfd, timerfd, signalfd

Browse source 
The set libwayland's event loop is made of, in kernel/sys/sys_event.c:
four kinds of descriptor with no inode, FD_EVENT, that read() drains
and poll() reports on. They were table entries returning ENOSYS that
read as done.

epoll registers (descriptor, file) pairs, so a closed descriptor
leaves the set; level- and edge-triggered, EPOLLONESHOT. Waiting is
poll()'s, a tick at a time. The old eventfd and signalfd numbers (284,
282) were aliased to the new calls and read flags from a garbage
register; they are their own entries now, with epoll_create and
epoll_pwait.

cmd/evtest checks each, then all four in one set. The plans are
brought up to date: everything Wayland was waiting on is built except
setsockopt.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
This commit is contained in:
Nexoniarz 2026-10-24 10:59:52 +02:00
commit a4fbdb7437
12 changed files with 974 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

14
Makefile
View file

@ -108,7 +108,7 @@ KERN_PROC = $(addprefix $(BUILD)/kernel/proc/, \
KERN_SYS = $(addprefix $(BUILD)/kernel/sys/, \
syscall.o sys_proc.o sys_fs.o sys_mem.o sys_net.o \
sys_time.o sys_sig.o sys_compat.o sys_poll.o linux_abi.o)
sys_time.o sys_sig.o sys_compat.o sys_poll.o sys_event.o linux_abi.o)
# vectors.o lives alongside trapasm in the arch dir
KERN_ARCH += $(BUILD)/kernel/arch/x86_64/vectors.o
@ -128,7 +128,7 @@ KERN_NOENTRY = $(filter-out $(BUILD)/kernel/arch/x86_64/entry.o, $(KERNOBJS))
# Third-party software does NOT go here — see ports/.
# -----------------------------------------------------------------------
ULIB = $(addprefix $(BUILD)/lib/, start.o glue.o usys.o)
CMDS = schinit schinitd fbinfo shmtest socktest inputtest nettest reflink schattr ping chvt loadkeys sigtest memfdtest pcitest vgpud schdbg schdbgd resolvconf httpd schmode netecho ldlsd tone hwreport dynhello
CMDS = schinit schinitd fbinfo shmtest socktest inputtest nettest reflink schattr ping chvt loadkeys sigtest memfdtest pcitest vgpud schdbg schdbgd resolvconf httpd schmode netecho ldlsd tone hwreport dynhello evtest
CMDBINS = $(addprefix $(BUILD)/cmd/, $(CMDS))
# -----------------------------------------------------------------------
@ -1070,6 +1070,16 @@ $(BUILD)/cmd/dynhello: cmd/dynhello/main.c $(BUILD)/cmd/libdynhello.so
$(MUSLPREFIX)/lib/crt1.o $(MUSLPREFIX)/lib/crti.o $(BUILD)/cmd/dynhello.o \
-L$(BUILD)/cmd -ldynhello -L$(MUSLPREFIX)/lib -lc $(PORTEND)
# evtest: eventfd, timerfd, signalfd and epoll through musl's wrappers. A
# musl program for the same reason as dynhello, and dynamic because it may as
# well be.
$(BUILD)/cmd/evtest: cmd/evtest/main.c $(MUSLPREFIX)/lib/libc.so
@mkdir -p $(BUILD)/cmd
$(DYNCC) -fno-pic -c $< -o $(BUILD)/cmd/evtest.o
$(DYNCC) -no-pie -nostdlib $(DYNLD) -o $@ \
$(MUSLPREFIX)/lib/crt1.o $(MUSLPREFIX)/lib/crti.o $(BUILD)/cmd/evtest.o \
-L$(MUSLPREFIX)/lib -lc $(PORTEND)
$(SYSROOT)/lib/libdynhello.so: $(BUILD)/cmd/libdynhello.so
@mkdir -p $(SYSROOT)/lib
cp $< $@