,@args)))
(if (minusp result)
(values nil (get-errno))
- ,success-form)))
+ ,success-form)))
;;; This is like SYSCALL, but if it fails, signal an error instead of
;;; returning error codes. Should only be used for syscalls that will
(defconstant l_incr 1) ; to increment the file pointer
(defconstant l_xtnd 2) ; to extend the file size
-;;; Accept a file descriptor and move the file pointer ahead
-;;; a certain offset for that file. WHENCE can be any of the following:
-;;; L_SET Set the file pointer.
-;;; L_INCR Increment the file pointer.
-;;; L_XTND Extend the file size.
+;;; Is a stream interactive?
+(defun unix-isatty (fd)
+ (declare (type unix-fd fd))
+ (int-syscall ("isatty" int) fd))
+
(defun unix-lseek (fd offset whence)
+ "Unix-lseek accepts a file descriptor and moves the file pointer by
+ OFFSET octets. Whence can be any of the following:
+
+ L_SET Set the file pointer.
+ L_INCR Increment the file pointer.
+ L_XTND Extend the file size.
+ "
(declare (type unix-fd fd)
- (type (unsigned-byte 32) offset)
(type (integer 0 2) whence))
- #!-(and x86 bsd)
- (int-syscall ("lseek" int off-t int) fd offset whence)
- ;; Need a 64-bit return value type for this. TBD. For now,
- ;; don't use this with any 2G+ partitions.
- #!+(and x86 bsd)
- (int-syscall ("lseek" int unsigned-long unsigned-long int)
- fd offset 0 whence))
+ (let ((result (alien-funcall (extern-alien "lseek" (function off-t int off-t int))
+ fd offset whence)))
+ (if (minusp result )
+ (values nil (get-errno))
+ (values result 0))))
;;; UNIX-READ accepts a file descriptor, a buffer, and the length to read.
;;; It attempts to read len bytes from the device associated with fd
;; a constant. Going the grovel_headers route doesn't seem to be
;; helpful, either, as Solaris doesn't export PATH_MAX from
;; unistd.h.
- #!-(or linux openbsd freebsd sunos osf1) (,stub,)
- #!+(or linux openbsd freebsd sunos osf1)
+ #!-(or linux openbsd freebsd sunos osf1 darwin) (,stub,)
+ #!+(or linux openbsd freebsd sunos osf1 darwin)
(or (newcharstar-string (alien-funcall (extern-alien "getcwd"
(function (* char)
(* char)
size-t))
nil
- #!+(or linux openbsd freebsd) 0
+ #!+(or linux openbsd freebsd darwin) 0
#!+(or sunos osf1) 1025))
(simple-perror "getcwd")))
;;; information.
(defun unix-ioctl (fd cmd arg)
(declare (type unix-fd fd)
- (type (unsigned-byte 32) cmd))
- (void-syscall ("ioctl" int unsigned-int (* char)) fd cmd arg))
+ (type (signed-byte 32) cmd))
+ (void-syscall ("ioctl" int int (* char)) fd cmd arg))
\f
;;;; sys/resource.h
(slot (slot itvo 'it-value) 'tv-usec))
which (alien-sap (addr itvn))(alien-sap (addr itvo))))))
-(defmacro with-timeout (expires &body body)
+(defmacro sb!ext:with-timeout (expires &body body)
"Execute the body, interrupting it with a SIGALRM after at least
EXPIRES seconds have passed. Uses Unix setitimer(), restoring any
previous timer after the body has finished executing"
- (let ((saved-seconds (gensym "SAVED-SECONDS"))
- (saved-useconds (gensym "SAVED-USECONDS"))
- (s (gensym "S")) (u (gensym "U")))
+ (with-unique-names (saved-seconds saved-useconds s u)
`(let (- ,saved-seconds ,saved-useconds)
(multiple-value-setq (- - - ,saved-seconds ,saved-useconds)
(unix-getitimer :real))
(unix-setitimer :real 0 0 ,s ,u)
,@body)
(unix-setitimer :real 0 0 ,saved-seconds ,saved-useconds))
- ,@body)))))
-
+ (progn
+ ,@body))))))
\f
(defconstant ENOENT 2) ; Unix error code, "No such file or directory"