X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-posix%2Finterface.lisp;h=8e6be50596e84c18051d6a7c88fb7edca47c921a;hb=260de2062fca170efdac3e42491d7d866c2d2e56;hp=0995a1d23c20cf2057885d942d4391ac6a64d9f1;hpb=0c4fe8f1022452ef7de0336a50f6e45e0ce7c8c3;p=sbcl.git diff --git a/contrib/sb-posix/interface.lisp b/contrib/sb-posix/interface.lisp index 0995a1d..8e6be50 100644 --- a/contrib/sb-posix/interface.lisp +++ b/contrib/sb-posix/interface.lisp @@ -8,7 +8,11 @@ (export ',name :sb-posix) (defclass ,name ,superclasses ,(loop for slotd in slots - collect (ldiff slotd (member :array-length slotd))) + ;; KLUDGE: Splice out :ARRAY-LENGTH options (they're + ;; for the conversion functions, not for DEFCLASS). + for array-length-option = (member :array-length slotd) + collect (append (ldiff slotd array-length-option) + (cddr array-length-option))) ,@options) (declaim (inline ,to-alien ,to-protocol)) (declaim (inline ,to-protocol ,to-alien)) @@ -57,14 +61,25 @@ (find-class ',name)))) (define-condition sb-posix:syscall-error (error) - ((errno :initarg :errno :reader sb-posix:syscall-errno)) + ((errno :initarg :errno :reader sb-posix:syscall-errno) + (name :initarg :name :initform nil :reader sb-posix:syscall-name)) (:report (lambda (c s) - (let ((errno (sb-posix:syscall-errno c))) - (format s "System call error ~A (~A)" - errno (sb-int:strerror errno)))))) - -(defun syscall-error () - (error 'sb-posix:syscall-error :errno (get-errno))) + (let ((errno (sb-posix:syscall-errno c)) + (name (sb-posix:syscall-name c))) + (if name + (format s "Error in ~S: ~A (~A)" + name + (sb-int:strerror errno) + errno) + (format s "Error in syscall: ~A (~A)" + (sb-int:strerror errno) + errno)))))) + +(declaim (ftype (function (&optional symbol) nil) syscall-error)) +(defun syscall-error (&optional name) + (error 'sb-posix:syscall-error + :name name + :errno (get-errno))) (defun unsupported-error (lisp-name c-name) (error "~S is unsupported by SBCL on this platform due to lack of ~A()." @@ -121,11 +136,15 @@ (open-with-mode pathname flags mode) (open-without-mode pathname flags)))))) (def #-win32 "open" #+win32 "_open")) +(define-call* "read" int minusp + (fd file-descriptor) (buf (* t)) (count int)) (define-call "rename" int minusp (oldpath filename) (newpath filename)) (define-call* "rmdir" int minusp (pathname filename)) (define-call* "unlink" int minusp (pathname filename)) (define-call #-netbsd "opendir" #+netbsd "_opendir" (* t) null-alien (pathname filename)) +(define-call* "write" int minusp + (fd file-descriptor) (buf (* t)) (count int)) #+inode64 (define-call ("readdir" :c-name "readdir$INODE64" :options :largefile) (* dirent) @@ -187,7 +206,7 @@ (function ,result-type system-area-pointer)) (sb-alien::vector-sap arg)))) (when (,errorp result) - (syscall-error)) + (syscall-error ',lisp-name)) ;; FIXME: We'd rather return pathnames, but other ;; SB-POSIX functions like this return strings... (let ((pathname (sb-ext:octets-to-string @@ -262,48 +281,57 @@ ;; uid, gid (define-call "geteuid" uid-t never-fails) ; "always successful", it says + #-sunos (define-call "getresuid" uid-t never-fails) (define-call "getuid" uid-t never-fails) (define-call "seteuid" int minusp (uid uid-t)) + #-sunos (define-call "setfsuid" int minusp (uid uid-t)) (define-call "setreuid" int minusp (ruid uid-t) (euid uid-t)) + #-sunos (define-call "setresuid" int minusp (ruid uid-t) (euid uid-t) (suid uid-t)) (define-call "setuid" int minusp (uid uid-t)) (define-call "getegid" gid-t never-fails) (define-call "getgid" gid-t never-fails) + #-sunos (define-call "getresgid" gid-t never-fails) (define-call "setegid" int minusp (gid gid-t)) + #-sunos (define-call "setfsgid" int minusp (gid gid-t)) (define-call "setgid" int minusp (gid gid-t)) (define-call "setregid" int minusp (rgid gid-t) (egid gid-t)) + #-sunos (define-call "setresgid" int minusp (rgid gid-t) (egid gid-t) (sgid gid-t)) ;; processes, signals (define-call "alarm" int never-fails (seconds unsigned)) + ;; exit and abort, not much point inlining these + (define-simple-call abort void) + (define-simple-call exit void (status int)) + (define-simple-call _exit void (status int)) - + ;; FIXME this is a lie, of course this can fail, but there's no + ;; error handling here yet! #+mach-exception-handler - (progn - ;; FIXME this is a lie, of course this can fail, but there's no - ;; error handling here yet! - (define-call "setup_mach_exceptions" void never-fails) - (define-call ("posix_fork" :c-name "fork") pid-t minusp) - (defun fork () - (tagbody - (sb-thread::with-all-threads-lock - (when (cdr sb-thread::*all-threads*) - (go :error)) - (let ((pid (posix-fork))) - (when (= pid 0) - (setup-mach-exceptions)) - (return-from fork pid))) - :error - (error "Cannot fork with multiple threads running."))) - (export 'fork :sb-posix)) - - #-mach-exception-handler - (define-call "fork" pid-t minusp) + (define-call "setup_mach_exceptions" void never-fails) + (define-call ("posix_fork" :c-name "fork") pid-t minusp) + (defun fork () + "Forks the current process, returning 0 in the new process and the PID of +the child process in the parent. Forking while multiple threads are running is +not supported." + (tagbody + (sb-thread::with-all-threads-lock + (when (cdr sb-thread::*all-threads*) + (go :error)) + (let ((pid (posix-fork))) + #+mach-exception-handler + (when (= pid 0) + (setup-mach-exceptions)) + (return-from fork pid))) + :error + (error "Cannot fork with multiple threads running."))) + (export 'fork :sb-posix) (define-call "getpgid" pid-t minusp (pid pid-t)) (define-call "getppid" pid-t never-fails) @@ -344,12 +372,12 @@ "Returns the resolved target of a symbolic link as a string." (flet ((%readlink (path buf length) (alien-funcall - (extern-alien "readlink" (function int c-string (* t) int)) + (extern-alien "readlink" (function int (c-string :not-null t) (* t) int)) path buf length))) (with-growing-c-string (buf size) (let ((count (%readlink (filename pathspec) buf size))) (cond ((minusp count) - (syscall-error)) + (syscall-error 'readlink)) ((< 0 count size) (buf count)))))))) @@ -367,7 +395,7 @@ (cond (result (buf)) ((/= (get-errno) sb-posix:erange) - (syscall-error)))))))) + (syscall-error 'getcwd)))))))) #-win32 (progn @@ -381,7 +409,7 @@ (extern-alien "wait" (function pid-t (* int))) (sb-sys:vector-sap ptr))))) (if (minusp pid) - (syscall-error) + (syscall-error 'wait) (values pid (aref ptr 0)))))) #-win32 @@ -399,7 +427,7 @@ pid-t (* int) int)) pid (sb-sys:vector-sap ptr) options)))) (if (minusp pid) - (syscall-error) + (syscall-error 'waitpid) (values pid (aref ptr 0))))) ;; waitpid macros (define-call "wifexited" boolean never-fails (status int)) @@ -423,8 +451,29 @@ (define-call "munmap" int minusp (start sb-sys:system-area-pointer) (length unsigned)) +#-win32 (define-call "msync" int minusp (addr sb-sys:system-area-pointer) (length unsigned) (flags int))) +#+win32 +(progn + ;; No attempt is made to offer a full mmap-like interface on Windows. + ;; It would be possible to do so (and has been done by AK on his + ;; branch), but the use case is unclear to me. However, the following + ;; definitions are needed to keep existing code in sb-simple-streams + ;; running. --DFL + (defconstant PROT-READ #x02) + (defconstant PROT-WRITE #x04) + (defconstant PROT-EXEC #x10) + (defconstant PROT-NONE 0) + (defconstant MAP-SHARED 0) + (defconstant MAP-PRIVATE 1) + (defconstant MS-ASYNC nil) + (defconstant MS-SYNC nil) + (export ;export on the fly like define-call + (defun msync (address length flags) + (declare (ignore flags)) + (when (zerop (sb-win32:flush-view-of-file address length)) + (sb-win32::win32-error "FlushViewOfFile"))))) ;;; mlockall, munlockall (define-call "mlockall" int minusp (flags int)) @@ -457,8 +506,8 @@ :documentation "Initial working directory.") (shell :initarg :shell :accessor passwd-shell :documentation "Program to use as shell.")) - (:documentation "Instances of this class represent entries in - the system's user database.")) + (:documentation + "Instances of this class represent entries in the system's user database.")) ;;; group database #-win32 @@ -480,10 +529,14 @@ nil (,conv r))))))) -(define-obj-call "getpwnam" login-name (function (* alien-passwd) c-string) alien-to-passwd) -(define-obj-call "getpwuid" uid (function (* alien-passwd) uid-t) alien-to-passwd) -(define-obj-call "getgrnam" login-name (function (* alien-group) c-string) alien-to-group) -(define-obj-call "getgrgid" gid (function (* alien-group) gid-t) alien-to-group) +(define-obj-call "getpwnam" login-name (function (* alien-passwd) (c-string :not-null t)) + alien-to-passwd) +(define-obj-call "getpwuid" uid (function (* alien-passwd) uid-t) + alien-to-passwd) +(define-obj-call "getgrnam" login-name (function (* alien-group) (c-string :not-null t)) + alien-to-group) +(define-obj-call "getgrgid" gid (function (* alien-group) gid-t) + alien-to-group) #-win32 @@ -512,14 +565,15 @@ bytes. For symbolic links, the length in bytes of the filename contained in the symbolic link.") + (rdev :initarg :rdev :reader stat-rdev + :documentation "For devices the device number.") (atime :initarg :atime :reader stat-atime :documentation "Time of last access.") (mtime :initarg :mtime :reader stat-mtime :documentation "Time of last data modification.") (ctime :initarg :ctime :reader stat-ctime - :documentation "Time of last status change")) - (:documentation "Instances of this class represent Posix file - metadata.")) + :documentation "Time of last status change.")) + (:documentation "Instances of this class represent POSIX file metadata.")) (defmacro define-stat-call (name arg designator-fun type) ;; FIXME: this isn't the documented way of doing this, surely? @@ -537,17 +591,17 @@ (,designator-fun ,arg) a-stat))) (when (minusp r) - (syscall-error)) + (syscall-error ',lisp-name)) (alien-to-stat a-stat stat))))))) (define-stat-call #-win32 "stat" #+win32 "_stat" pathname filename - (function int c-string (* alien-stat))) + (function int (c-string :not-null t) (* alien-stat))) #-win32 (define-stat-call "lstat" pathname filename - (function int c-string (* alien-stat))) + (function int (c-string :not-null t) (* alien-stat))) ;;; No symbolic links on Windows, so use stat #+win32 (progn @@ -583,7 +637,7 @@ (extern-alien "pipe" (function int (* int))) (sb-sys:vector-sap filedes2))))) (when (minusp r) - (syscall-error))) + (syscall-error 'pipe))) (values (aref filedes2 0) (aref filedes2 1)))) #-win32 @@ -597,9 +651,9 @@ (lflag :initarg :lflag :accessor sb-posix:termios-lflag :documentation "Local modes.") (cc :initarg :cc :accessor sb-posix:termios-cc :array-length nccs - :documentation "Control characters")) - (:documentation "Instances of this class represent I/O - characteristics of the terminal.")) + :documentation "Control characters.")) + (:documentation + "Instances of this class represent I/O characteristics of the terminal.")) #-win32 (progn @@ -616,7 +670,7 @@ (function int int int (* alien-termios))) fd actions a-termios))) (when (minusp r) - (syscall-error))) + (syscall-error 'tcsetattr))) (values)))) (export 'tcgetattr :sb-posix) (declaim (inline tcgetattr)) @@ -629,7 +683,7 @@ (file-descriptor fd) a-termios))) (when (minusp r) - (syscall-error)) + (syscall-error 'tcgetattr)) (setf termios (alien-to-termios a-termios termios)))) termios) (define-call "tcdrain" int minusp (fd file-descriptor)) @@ -648,7 +702,7 @@ a-termios speed))) (when (minusp r) - (syscall-error)) + (syscall-error 'cfsetispeed)) (setf termios (alien-to-termios a-termios termios)))) termios) (export 'cfsetospeed :sb-posix) @@ -662,7 +716,7 @@ a-termios speed))) (when (minusp r) - (syscall-error)) + (syscall-error 'cfsetospeed)) (setf termios (alien-to-termios a-termios termios)))) termios) (export 'cfgetispeed :sb-posix) @@ -693,12 +747,13 @@ (function time-t (* time-t))) nil))) (if (minusp result) - (syscall-error) + (syscall-error 'time) result))) (export 'utime :sb-posix) (defun utime (filename &optional access-time modification-time) - (let ((fun (extern-alien "utime" (function int c-string - (* alien-utimbuf)))) + (let ((fun (extern-alien #-netbsd "utime" #+netbsd "_utime" + (function int (c-string :not-null t) + (* alien-utimbuf)))) (name (filename filename))) (if (not (and access-time modification-time)) (alien-funcall fun name nil) @@ -707,7 +762,7 @@ (slot utimbuf 'modtime) (or modification-time 0)) (let ((result (alien-funcall fun name (alien-sap utimbuf)))) (if (minusp result) - (syscall-error) + (syscall-error 'utime) result)))))) (export 'utimes :sb-posix) (defun utimes (filename &optional access-time modification-time) @@ -717,9 +772,9 @@ (values integer (cl:truncate (* fractional 1000000))))) (maybe-syscall-error (value) (if (minusp value) - (syscall-error) + (syscall-error 'utimes) value))) - (let ((fun (extern-alien "utimes" (function int c-string + (let ((fun (extern-alien "utimes" (function int (c-string :not-null t) (* (array alien-timeval 2))))) (name (filename filename))) (if (not (and access-time modification-time)) @@ -745,15 +800,18 @@ (export 'getenv :sb-posix)) (defun getenv (name) (let ((r (alien-funcall - (extern-alien "getenv" (function (* char) c-string)) + (extern-alien "getenv" (function (* char) (c-string :not-null t))) name))) (declare (type (alien (* char)) r)) (unless (null-alien r) (cast r c-string)))) #-win32 (progn - (define-call "setenv" int minusp (name c-string) (value c-string) (overwrite int)) - (define-call "unsetenv" int minusp (name c-string)) + (define-call "setenv" int minusp + (name (c-string :not-null t)) + (value (c-string :not-null t)) + (overwrite int)) + (define-call "unsetenv" int minusp (name (c-string :not-null t))) (export 'putenv :sb-posix) (defun putenv (string) (declare (string string)) @@ -773,7 +831,7 @@ #+win32 (progn ;; Windows doesn't define a POSIX setenv, but happily their _putenv is sane. - (define-call* "putenv" int minusp (string c-string)) + (define-call* "putenv" int minusp (string (c-string :not-null t))) (export 'setenv :sb-posix) (defun setenv (name value overwrite) (declare (string name value)) @@ -793,7 +851,7 @@ (export 'closelog :sb-posix) (defun openlog (ident options &optional (facility log-user)) (alien-funcall (extern-alien - "openlog" (function void c-string int int)) + "openlog" (function void (c-string :not-null t) int int)) ident options facility)) (defun syslog (priority format &rest args) "Send a message to the syslog facility, with severity level @@ -801,7 +859,9 @@ PRIORITY. The message will be formatted as by CL:FORMAT (rather than C's printf) with format string FORMAT and arguments ARGS." (flet ((syslog1 (priority message) (alien-funcall (extern-alien - "syslog" (function void int c-string c-string)) + "syslog" (function void int + (c-string :not-null t) + (c-string :not-null t))) priority "%s" message))) (syslog1 priority (apply #'format nil format args)))) (define-call "closelog" void never-fails))