ports: add poll to mlibc and make bash use readline

patches/mlibc/jinx-working-patch.patch

@@ -133,10 +133,10 @@ index 0000000..e5b087a
 +
 diff --git mlibc-workdir/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
 new file mode 100644
-index 0000000..74cb539
+index 0000000..023c581
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
-@@ -0,0 +1,350 @@
+@@ -0,0 +1,422 @@
 +#include <bits/ensure.h>
 +#include <mlibc/debug.hpp>
 +#include <mlibc/all-sysdeps.hpp>
@@ -211,6 +211,78 @@ index 0000000..74cb539
 +		return 0;
 +	}
 +
++	int sys_tcgetattr(int fd, struct termios *attr){
++		int res;
++		return sys_ioctl(fd, TCGETS, (void *)attr, &res);
++	}
++
++	int sys_tcsetattr(int fd, int act, const struct termios *attr){
++		int res;
++		return sys_ioctl(fd, TCSETS, (void *)attr, &res);
++	}
++
++	int sys_poll(struct pollfd *fds, nfds_t count, int timeout, int *num_events) {
++		long ret;
++		long error = syscall(SYSCALL_POLL, &ret, (uint64_t)fds, count, timeout);
++		*num_events = ret;
++		return error;
++	}
++
++// XXX emulate with ppoll
++#ifndef MLIBC_BUILDING_RTDL
++	int sys_pselect(int num_fds, fd_set *read_set, fd_set *write_set, fd_set *except_set, const struct timespec *timeout, const sigset_t *sigmask, int *num_events) {
++		pollfd *fds = (pollfd *)malloc(num_fds * sizeof(pollfd));
++
++		if(fds == NULL)
++			return ENOMEM;
++
++		for (int fd = 0; fd < num_fds; ++fd) {
++			short events;
++			if (read_set && FD_ISSET(fd, read_set)) {
++				events |= POLLIN;
++			}
++
++			if (write_set && FD_ISSET(fd, write_set)) {
++				events |= POLLOUT;
++			}
++
++			if (except_set && FD_ISSET(fd, except_set)) {
++				events |= POLLPRI;
++			}
++
++			if (events) {
++				fds[fd].fd = fd;
++				fds[fd].events = events;
++				fds[fd].revents = 0;
++			} else {
++				fds[fd].fd = -1;
++			}
++		}
++
++		int time = timeout == NULL ? -1 : timeout->tv_sec * 1000 + timeout->tv_nsec / 1000000;
++
++		int err = sys_poll(fds, num_fds, time, num_events);
++
++		if (err) {
++			free(fds);
++			return err;
++		}
++
++		for (int fd = 0; fd < num_fds; ++fd) {
++			if (read_set && (fds[fd].revents & POLLIN) == 0)
++				FD_CLR(fd, read_set);
++
++			if (write_set && (fds[fd].revents & POLLOUT) == 0)
++				FD_CLR(fd, write_set);
++
++			if (except_set && (fds[fd].revents & POLLPRI) == 0)
++				FD_CLR(fd, except_set);	
++		}
++
++		return 0;
++	}
++#endif
++
 +	int sys_umask(mode_t mode, mode_t *old) {
 +		long ret;
 +		long error = syscall(SYSCALL_UMASK, &ret, mode);
@@ -506,10 +578,10 @@ index 0000000..990eca0
 +#endif
 diff --git mlibc-workdir/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
 new file mode 100644
-index 0000000..7f39915
+index 0000000..d4405b6
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
-@@ -0,0 +1,57 @@
+@@ -0,0 +1,58 @@
 +#ifndef _SYSCALL_H_INCLUDE
 +#define _SYSCALL_H_INCLUDE
 +
@@ -547,6 +619,7 @@ index 0000000..7f39915
 +#define SYSCALL_FCHMOD 31
 +#define SYSCALL_FCHMODAT 32
 +#define SYSCALL_UMASK 33
++#define SYSCALL_POLL 34
 +
 +#include <stddef.h>
 +#include <stdint.h>

recipes/bash

@@ -3,10 +3,10 @@ revision=1
 from_source=bash
 imagedeps="base-devel"
 hostdeps="xgcc xbinutils"
-deps="mlibc"
+deps="readline mlibc"
 
 configure() {
-	${source_dir}/configure --host=x86_64-astral --prefix=${prefix} --without-bash-malloc --disable-readline
+	${source_dir}/configure --host=x86_64-astral --prefix=${prefix} --without-bash-malloc
 }
 
 build() {