kernel/libroot: add pipe2() from POSIX.1-2024

this adds a parameter to the create_pipe syscall. Adjust strace.

Change-Id: I83e9f039eb28c862458654b66c03e2e21a258822
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8513
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>

headers/posix/unistd.h

@@ -341,6 +341,7 @@ extern int		fchdir(int fd);
 extern char		*getcwd(char *buffer, size_t size);
 
 extern int		pipe(int fildes[2]);
+extern int		pipe2(int fildes[2], int flags);
 extern int		dup(int fd);
 extern int		dup2(int fd1, int fd2);
 extern int		close(int fd);

headers/private/kernel/vfs.h

@@ -206,7 +206,7 @@ status_t	_user_unlink(int fd, const char *path);
 status_t	_user_rename(int oldFD, const char *oldpath, int newFD,
 				const char *newpath);
 status_t	_user_create_fifo(int fd, const char *path, mode_t perms);
-status_t	_user_create_pipe(int *fds);
+status_t	_user_create_pipe(int *fds, int flags);
 status_t	_user_access(int fd, const char *path, int mode,
 				bool effectiveUserGroup);
 ssize_t		_user_select(int numfds, fd_set *readSet, fd_set *writeSet,

headers/private/system/syscalls.h

@@ -295,7 +295,7 @@ extern status_t		_kern_unlink(int fd, const char *path);
 extern status_t		_kern_rename(int oldDir, const char *oldpath, int newDir,
 						const char *newpath);
 extern status_t		_kern_create_fifo(int fd, const char *path, mode_t perms);
-extern status_t		_kern_create_pipe(int *fds);
+extern status_t		_kern_create_pipe(int *fds, int flags);
 extern status_t		_kern_access(int fd, const char *path, int mode,
 						bool effectiveUserGroup);
 extern ssize_t		_kern_select(int numfds, struct fd_set *readSet,