sched/signal and syscall/: Add support for pselect() and ppoll() functions

syscall/syscall.csv

@@ -67,8 +67,10 @@
 "pgalloc", "nuttx/arch.h", "defined(CONFIG_BUILD_KERNEL)", "uintptr_t", "uintptr_t", "unsigned int"
 "pipe2","nuttx/drivers/drivers.h","defined(CONFIG_PIPES) && CONFIG_DEV_PIPE_SIZE > 0","int","int [2]|int*","size_t"
 "poll","poll.h","!defined(CONFIG_DISABLE_POLL) && (CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0)","int","FAR struct pollfd*","nfds_t","int"
+"ppoll","poll.h","!defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_POLL) && (CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0)","int","FAR struct pollfd*","nfds_t","FAR const struct timespec *","FAR const sigset_t *"
 "prctl","sys/prctl.h", "CONFIG_TASK_NAME_SIZE > 0","int","int","..."
 "pread","unistd.h","CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0","ssize_t","int","FAR void*","size_t","off_t"
+"pselect","sys/select.h","!defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_POLL) && (CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0)","int","int","FAR fd_set*","FAR fd_set*","FAR fd_set*","FAR const struct timespec *","FAR const sigset_t *"
 "pwrite","unistd.h","CONFIG_NSOCKET_DESCRIPTORS > 0 || CONFIG_NFILE_DESCRIPTORS > 0","ssize_t","int","FAR const void*","size_t","off_t"
 "posix_spawnp","spawn.h","!defined(CONFIG_BINFMT_DISABLE) && defined(CONFIG_LIBC_EXECFUNCS) && defined(CONFIG_LIB_ENVPATH)","int","FAR pid_t *","FAR const char *","FAR const posix_spawn_file_actions_t *","FAR const posix_spawnattr_t *","FAR char *const []|FAR char *const *","FAR char *const []|FAR char *const *"
 "posix_spawn","spawn.h","!defined(CONFIG_BINFMT_DISABLE) && defined(CONFIG_LIBC_EXECFUNCS) && !defined(CONFIG_LIB_ENVPATH)","int","FAR pid_t *","FAR const char *","FAR const posix_spawn_file_actions_t *","FAR const posix_spawnattr_t *","FAR char *const []|FAR char *const *","FAR char *const []|FAR char *const *"

syscall/syscall_lookup.h

@@ -210,6 +210,8 @@ SYSCALL_LOOKUP(up_assert,                  2, STUB_up_assert)
 #  ifndef CONFIG_DISABLE_POLL
   SYSCALL_LOOKUP(poll,                     3, STUB_poll)
   SYSCALL_LOOKUP(select,                   5, STUB_select)
+  SYSCALL_LOOKUP(ppoll,                    4, STUB_ppoll)
+  SYSCALL_LOOKUP(pselect,                  6, STUB_pselect)
 #  endif
 #  ifdef CONFIG_NETDEV_IFINDEX
   SYSCALL_LOOKUP(if_indextoname,           2, STUB_if_indextoname)

syscall/syscall_stublookup.c

@@ -205,6 +205,11 @@ uintptr_t STUB_poll(int nbr, uintptr_t parm1, uintptr_t parm2,
             uintptr_t parm3);
 uintptr_t STUB_select(int nbr, uintptr_t parm1, uintptr_t parm2,
             uintptr_t parm3, uintptr_t parm4, uintptr_t parm5);
+uintptr_t STUB_ppoll(int nbr, uintptr_t parm1, uintptr_t parm2,
+            uintptr_t parm3, uintptr_t parm4);
+uintptr_t STUB_pselect(int nbr, uintptr_t parm1, uintptr_t parm2,
+            uintptr_t parm3, uintptr_t parm4, uintptr_t parm5,
+            uintptr_t parm6);
 
 /* Asynchronous I/O */