libbsd: add closefrom() and close_range()

Change-Id: I9c88948d6c4d5a32e3aa06cd696e2ce24c2d298f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/9334
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>

headers/compatibility/bsd/unistd.h

@@ -28,6 +28,9 @@ char	*getusershell(void);
 int		issetugid(void);
 void	setusershell(void);
 
+int		closefrom(int lowFd);
+int		close_range(u_int minFd, u_int maxFd, int flags);
+
 #ifdef __cplusplus
 }
 #endif

headers/posix/unistd.h

@@ -327,6 +327,8 @@
 #	define SEEK_HOLE 4
 #endif
 
+#define CLOSE_RANGE_CLOEXEC	0x4
+
 
 #ifdef __cplusplus
 extern "C" {

headers/private/kernel/vfs.h

@@ -255,6 +255,7 @@ int			_user_dup2(int ofd, int nfd, int flags);
 status_t	_user_lock_node(int fd);
 status_t	_user_unlock_node(int fd);
 status_t	_user_preallocate(int fd, off_t offset, off_t length);
+status_t	_user_close_range(u_int minFd, u_int maxFd, int flags);
 
 /* socket user prototypes (implementation in socket.cpp) */
 int			_user_socket(int family, int type, int protocol);

headers/private/system/syscalls.h

@@ -355,6 +355,7 @@ extern status_t		_kern_unlock_node(int fd);
 extern status_t		_kern_get_next_fd_info(team_id team, uint32 *_cookie,
 						struct fd_info *info, size_t infoSize);
 extern status_t		_kern_preallocate(int fd, off_t offset, off_t length);
+extern status_t		_kern_close_range(u_int minFd, u_int maxFd, int flags);
 
 // socket functions
 extern int			_kern_socket(int family, int type, int protocol);