X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Frun-program.lisp;h=95ebb73f37673b764525be7abe0211cfd966ddec;hb=245101f127d61e28b9c864c720eb17973469a904;hp=286fdc63209874c73a979cdf27dec2dcecf63f5c;hpb=85f9c92558538b85540ff420fa8970af91e241a2;p=sbcl.git diff --git a/src/code/run-program.lisp b/src/code/run-program.lisp index 286fdc6..95ebb73 100644 --- a/src/code/run-program.lisp +++ b/src/code/run-program.lisp @@ -50,7 +50,7 @@ "Return the Unix environment (\"man environ\") as a list of SIMPLE-STRINGs." (c-strings->string-list (wrapped-environ))) -;;; Convert as best we can from a SBCL representation of a Unix +;;; Convert as best we can from an SBCL representation of a Unix ;;; environment to a CMU CL representation. ;;; ;;; * (UNIX-ENVIRONMENT-CMUCL-FROM-SBCL '("Bletch=fub" "Noggin" "YES=No!")) @@ -97,25 +97,21 @@ (options sb-alien:int) (rusage sb-alien:int)) -(defconstant wait-wnohang #-svr4 1 #+svr4 #o100) -(defconstant wait-wuntraced #-svr4 2 #+svr4 4) -(defconstant wait-wstopped #-svr4 #o177 #+svr4 wait-wuntraced) - (defun wait3 (&optional do-not-hang check-for-stopped) "Return any available status information on child process. " (multiple-value-bind (pid status) (c-wait3 (logior (if do-not-hang - wait-wnohang + sb-unix:wnohang 0) (if check-for-stopped - wait-wuntraced + sb-unix:wuntraced 0)) 0) (cond ((or (minusp pid) (zerop pid)) nil) ((eql (ldb (byte 8 0) status) - wait-wstopped) + sb-unix:wstopped) (values pid :stopped (ldb (byte 8 8) status))) @@ -288,21 +284,6 @@ ;;; list of handlers installed by RUN-PROGRAM (defvar *handlers-installed* nil) -#+FreeBSD -(define-alien-type nil - (struct sgttyb - (sg-ispeed sb-alien:char) ; input speed - (sg-ospeed sb-alien:char) ; output speed - (sg-erase sb-alien:char) ; erase character - (sg-kill sb-alien:char) ; kill character - (sg-flags sb-alien:short))) ; mode flags -#+OpenBSD -(define-alien-type nil - (struct sgttyb - (sg-four sb-alien:int) - (sg-chars (array sb-alien:char 4)) - (sg-flags sb-alien:int))) - ;;; Find an unused pty. Return three values: the file descriptor for ;;; the master side of the pty, the file descriptor for the slave side ;;; of the pty, and the name of the tty device for the slave side. @@ -319,34 +300,6 @@ sb-unix:o_rdwr #o666))) (when slave-fd - ;; comment from classic CMU CL: - ;; Maybe put a vhangup here? - ;; - ;; FIXME: It seems as though this logic should be in - ;; OPEN-PTY, not FIND-A-PTY (both from the comments - ;; documenting DEFUN FIND-A-PTY, and from the - ;; connotations of the function names). - ;; - ;; FIXME: It would be nice to have a note, and/or a pointer - ;; to some reference material somewhere, explaining - ;; why we need this on *BSD and not on Linux. - #+bsd - (sb-alien:with-alien ((stuff (sb-alien:struct sgttyb))) - (let ((sap (sb-alien:alien-sap stuff))) - (sb-unix:unix-ioctl slave-fd sb-unix:TIOCGETP sap) - (setf (sb-alien:slot stuff 'sg-flags) - ;; This is EVENP|ODDP, the same numeric code - ;; both on FreeBSD and on OpenBSD. -- WHN 20000929 - #o300) ; EVENP|ODDP - (sb-unix:unix-ioctl slave-fd sb-unix:TIOCSETP sap) - (sb-unix:unix-ioctl master-fd sb-unix:TIOCGETP sap) - (setf (sb-alien:slot stuff 'sg-flags) - (logand (sb-alien:slot stuff 'sg-flags) - ;; This is ~ECHO, the same numeric - ;; code both on FreeBSD and on OpenBSD. - ;; -- WHN 20000929 - (lognot 8))) ; ~ECHO - (sb-unix:unix-ioctl master-fd sb-unix:TIOCSETP sap))) (return-from find-a-pty (values master-fd slave-fd @@ -409,8 +362,7 @@ (values vec-sap (sap+ vec-sap #-alpha 4 #+alpha 8) total-bytes)))) (defmacro with-c-strvec ((var str-list) &body body) - (let ((sap (gensym "SAP-")) - (size (gensym "SIZE-"))) + (with-unique-names (sap size) `(multiple-value-bind (,sap ,var ,size) (string-list-to-c-strvec ,str-list) @@ -434,6 +386,22 @@ (values (and (eq (sb-unix:unix-file-kind unix-filename) :file) (sb-unix:unix-access unix-filename sb-unix:x_ok)))) +(defun find-executable-in-search-path (pathname + &optional + (search-path (posix-getenv "PATH"))) + "Find the first executable file matching PATHNAME in any of the colon-separated list of pathnames SEARCH-PATH" + (loop for end = (position #\: search-path :start (if end (1+ end) 0)) + and start = 0 then (and end (1+ end)) + while start + ;; the truename of a file naming a directory is the + ;; directory, at least until pfdietz comes along and says why + ;; that's noncompliant + for fullpath = (merge-pathnames + pathname (truename + (subseq search-path start end))) + when (unix-filename-is-executable-p (namestring fullpath)) + return fullpath)) + ;;; FIXME: There shouldn't be two semiredundant versions of the ;;; documentation. Since this is a public extension function, the ;;; documentation should be in the doc string. So all information from @@ -485,6 +453,7 @@ (posix-environ)) environment-p) (wait t) + search pty input if-input-does-not-exist @@ -520,6 +489,10 @@ :ENV an alternative lossy representation of the new Unix environment, for compatibility with CMU CL + :SEARCH + Look for PROGRAM in each of the directories along the $PATH + environment variable. Otherwise an absolute pathname is required. + (See also FIND-EXECUTABLE-IN-SEARCH-PATH) :WAIT If non-NIL (default), wait until the created process finishes. If NIL, continue running Lisp until the program finishes. @@ -578,17 +551,11 @@ ;; designator, but internally we'd like SIMPLE-STRINGs. (simple-args (mapcar (lambda (x) (coerce x 'simple-string)) args))) (unwind-protect - (let (;; FIXME: The old code here used to do - ;; (MERGE-PATHNAMES PROGRAM "path:"), - ;; which is the right idea (searching through the Unix - ;; PATH). Unfortunately, there is no logical pathname - ;; "path:" defined in sbcl-0.6.10. It would probably be - ;; reasonable to restore Unix PATH searching in SBCL, e.g. - ;; with a function FIND-EXECUTABLE-FILE-IN-POSIX-PATH. - ;; CMU CL did it with a "PATH:" search list, but CMU CL - ;; search lists are a non-ANSI extension that SBCL - ;; doesn't support. -- WHN) - (pfile (unix-namestring program t)) + (let ((pfile + (if search + (let ((p (find-executable-in-search-path program))) + (and p (unix-namestring p t))) + (unix-namestring program t))) (cookie (list 0))) (unless pfile (error "no such program: ~S" program))