Merge pull request #1 from elicn/libumem-epoll-fixes

Refactor and fixes

Author: libumem

qiling/os/posix/const.py

@@ -1065,26 +1065,28 @@ class qnx_mmap_prot_flags(QlPrettyFlag):
 SHMGET      = 23
 SHMCTL      = 24
 
-# epoll syscall, see https://codebrowser.dev/glibc/glibc/sysdeps/unix/sysv/linux/sys/epoll.h.html
-EPOLL_OPS = {
-0x001: "EPOLL_CTL_ADD", 
-0x002: "EPOLL_CTL_DEL", 
-0x003: "EPOLL_CTL_MOD"
-}
-
-EPOLLIN = 0x001
-EPOLLPRI = 0x002
-EPOLLOUT = 0x004
-EPOLLRDNORM = 0x040
-EPOLLRDBAND = 0x080
-EPOLLWRNORM = 0x100
-EPOLLWRBAND = 0x200
-EPOLLMSG = 0x400
-EPOLLERR = 0x008
-EPOLLHUP = 0x010
-EPOLLRDHUP = 0x2000
-EPOLLEXCLUSIVE = 268435456 #1 << 28
-EPOLLWAKEUP = 536870912 #1 << 29
-EPOLLONESHOT = 1073741824 #1 << 30
-EPOLLET = 2147483648 #1 << 31
-EPOLL_CLOEXEC = 0x02000000
+# see: https://elixir.bootlin.com/linux/v5.19.17/source/include/uapi/linux/eventpoll.h
+EPOLL_CTL_ADD = 1
+EPOLL_CTL_DEL = 2
+EPOLL_CTL_MOD = 3
+
+EPOLLIN     = 0x00000001
+EPOLLPRI    = 0x00000002
+EPOLLOUT    = 0x00000004
+EPOLLERR    = 0x00000008
+EPOLLHUP    = 0x00000010
+EPOLLNVAL   = 0x00000020
+EPOLLRDNORM = 0x00000040
+EPOLLRDBAND = 0x00000080
+EPOLLWRNORM = 0x00000100
+EPOLLWRBAND = 0x00000200
+EPOLLMSG    = 0x00000400
+EPOLLRDHUP  = 0x00002000
+
+# TODO: should be aligned to emulated system's close-on-exec value
+EPOLL_CLOEXEC = 0o2000000
+
+EPOLLEXCLUSIVE = 0b1 << 28
+EPOLLWAKEUP    = 0b1 << 29
+EPOLLONESHOT   = 0b1 << 30
+EPOLLET        = 0b1 << 31