musl 1.2.5: stub missing syscalls, add time64 versions for 32bit

- stub faccessat, faccessat2, fchmodat2, pwritev2, preadv2, statx
- include time64 versions of calls to time functions.

As it looks like IncludeOS is already using 64 bit time on 32 bit,
the *_time64 calls just redirect to the existing calls. On 64 bit systems
there should be no change, as the regular calls are 64 bit.

src/musl/CMakeLists.txt

@@ -10,6 +10,7 @@ set(MUSL_OBJECTS
  msync.cpp mincore.cpp syscall_n.cpp sigmask.cpp gettid.cpp
  socketcall.cpp rt_sigaction.cpp
  stat.cpp fstat.cpp fstatat.cpp
+ statx.cpp
  access.cpp
  chmod.cpp
  chown.cpp
@@ -19,7 +20,10 @@ set(MUSL_OBJECTS
  fchdir.cpp
  fchmod.cpp
  fchmodat.cpp
+ fchmodat2.cpp
  fchown.cpp
+ faccessat.cpp
+ faccessat2.cpp
  fsync.cpp
  ftruncate.cpp
  getdents.cpp

src/musl/clock_gettime.cpp

@@ -21,3 +21,8 @@ extern "C"
 long syscall_SYS_clock_gettime(clockid_t clk_id, struct timespec* tp) {
  return strace(sys_clock_gettime, "clock_gettime", clk_id, tp);
 }
+
+extern "C"
+long syscall_SYS_clock_gettime64(clockid_t clk_id, struct timespec* tp) {
+ return strace(sys_clock_gettime, "clock_gettime", clk_id, tp);
+}

src/musl/faccessat.cpp

@@ -0,0 +1,14 @@
+#include "common.hpp"
+#include <sys/stat.h>
+#include <fcntl.h>
+
+static long sys_faccessat(int /*fd*/, const char* /*path*/, mode_t, int /*flag*/)
+{
+ // TODO Same as access(), but path is relative to fd
+ return -EROFS;
+}
+
+extern "C"
+long syscall_SYS_faccessat(int fd, const char *path, mode_t mode, int flag) {
+ return strace(sys_faccessat, "faccessat", fd, path, mode, flag);
+}

src/musl/faccessat2.cpp

@@ -0,0 +1,14 @@
+#include "common.hpp"
+#include <sys/stat.h>
+#include <fcntl.h>
+
+static long sys_faccessat2(int /*fd*/, const char* /*path*/, mode_t, int /*flag*/)
+{
+ // TODO Same as access(), but path is relative to fd
+ return -EROFS;
+}
+
+extern "C"
+long syscall_SYS_faccessat2(int fd, const char *path, mode_t mode, int flag) {
+ return strace(sys_faccessat2, "faccessat2", fd, path, mode, flag);
+}

src/musl/fchmodat2.cpp

@@ -0,0 +1,14 @@
+#include "common.hpp"
+#include <sys/stat.h>
+#include <fcntl.h>
+
+static long sys_fchmodat2(int /*fd*/, const char* /*path*/, mode_t, int /*flag*/)
+{
+ // currently makes no sense, especially since we're read-only
+ return -EROFS;
+}
+
+extern "C"
+long syscall_SYS_fchmodat2(int fd, const char *path, mode_t mode, int flag) {
+ return strace(sys_fchmodat2, "fchmodat2", fd, path, mode, flag);
+}

src/musl/futex.cpp

@@ -40,3 +40,10 @@ int syscall_SYS_futex(int *uaddr, int futex_op, int val,
 {
  return stubtrace(sys_futex, "futex", uaddr, futex_op, val, timeout, val3);
 }
+
+extern "C"
+int syscall_SYS_futex_time64(int *uaddr, int futex_op, int val,
+ const struct timespec *timeout, int val3)
+{
+ return stubtrace(sys_futex, "futex_time64", uaddr, futex_op, val, timeout, val3);
+}

src/musl/nanosleep.cpp

@@ -18,3 +18,10 @@ long syscall_SYS_clock_nanosleep(clockid_t, int,
 {
  return strace(sys_nanosleep, "clock_nanosleep", req, rem);
 }
+
+extern "C"
+long syscall_SYS_clock_nanosleep_time64(clockid_t, int,
+ const struct timespec *req, struct timespec *rem)
+{
+ return strace(sys_nanosleep, "clock_nanosleep_time64", req, rem);
+}

src/musl/statx.cpp

@@ -0,0 +1,15 @@
+#include "common.hpp"
+#include <sys/stat.h>
+
+long sys_statx(int /*dirfd*/, const char* /*pathname*/, int /*flags*/,
+ unsigned int /*mask*/, struct statx* /*statxbuf*/)
+{
+ return -ENOSYS;
+}
+
+extern "C"
+long syscall_SYS_statx(int dirfd, const char *pathname, int flags,
+ unsigned int mask, struct statx *statxbuf) {
+ return strace(sys_statx, "statx", dirfd, pathname, flags, mask, statxbuf);
+}
+