(simple-file-perror note-format pathname errno)
(return-from query-file-system nil))))
(let ((filename (native-namestring pathname :as-file t)))
+ #!+win32
+ (case query-for
+ ((:existence :truename)
+ (multiple-value-bind (file kind)
+ (sb!win32::native-probe-file-name filename)
+ (when (and (not file) kind)
+ (setf file filename))
+ ;; The following OR was an AND, but that breaks files like NUL,
+ ;; for which GetLongPathName succeeds yet GetFileAttributesEx
+ ;; fails to return the file kind. --DFL
+ (if (or file kind)
+ (values
+ (parse-native-namestring
+ file
+ (pathname-host pathname)
+ (sane-default-pathname-defaults)
+ :as-directory (eq :directory kind)))
+ (fail "couldn't resolve ~A" filename
+ (- (sb!win32:get-last-error))))))
+ (:write-date
+ (or (sb!win32::native-file-write-date filename)
+ (fail "couldn't query write date of ~A" filename
+ (- (sb!win32:get-last-error))))))
+ #!-win32
(multiple-value-bind (existsp errno ino mode nlink uid gid rdev size
atime mtime)
(sb!unix:unix-stat filename)
- (declare (ignore ino nlink gid rdev size atime
- #!+win32 uid))
- (if existsp
- (case query-for
- (:existence (nth-value
- 0
- (parse-native-namestring
- filename
- (pathname-host pathname)
- (sane-default-pathname-defaults)
- :as-directory (eql (logand mode sb!unix:s-ifmt)
- sb!unix:s-ifdir))))
- (:truename (nth-value
- 0
- (parse-native-namestring
- ;; Note: in case the file is stat'able, POSIX
- ;; realpath(3) gets us a canonical absolute
- ;; filename, even if the post-merge PATHNAME
- ;; is not absolute...
- (multiple-value-bind (realpath errno)
- (sb!unix:unix-realpath filename)
- (if realpath
- realpath
- (fail "couldn't resolve ~A" filename errno)))
- (pathname-host pathname)
- (sane-default-pathname-defaults)
- ;; ... but without any trailing slash.
- :as-directory (eql (logand mode sb!unix:s-ifmt)
- sb!unix:s-ifdir))))
- (:author
- #!-win32
- (sb!unix:uid-username uid))
- (:write-date (+ unix-to-universal-time mtime)))
- (progn
- ;; SBCL has for many years had a policy that a pathname
- ;; that names an existing, dangling or self-referential
- ;; symlink denotes the symlink itself. stat(2) fails
- ;; and sets errno to ENOENT or ELOOP respectively, but
- ;; we must distinguish cases where the symlink exists
- ;; from ones where there's a loop in the apparent
- ;; containing directory.
- #!-win32
- (multiple-value-bind (linkp ignore ino mode nlink uid gid rdev
- size atime mtime)
- (sb!unix:unix-lstat filename)
- (declare (ignore ignore ino mode nlink gid rdev size atime))
- (when (and (or (= errno sb!unix:enoent)
- (= errno sb!unix:eloop))
- linkp)
- (return-from query-file-system
- (case query-for
- (:existence
- ;; We do this reparse so as to return a
- ;; normalized pathname.
- (parse-native-namestring
- filename (pathname-host pathname)))
- (:truename
- ;; So here's a trick: since lstat succeded,
- ;; FILENAME exists, so its directory exists and
- ;; only the non-directory part is loopy. So
- ;; let's resolve FILENAME's directory part with
- ;; realpath(3), in order to get a canonical
- ;; absolute name for the directory, and then
- ;; return a pathname having PATHNAME's name,
- ;; type, and version, but the rest from the
- ;; truename of the directory. Since we turned
- ;; PATHNAME into FILENAME "as a file", FILENAME
- ;; does not end in a slash, and so we get the
- ;; directory part of FILENAME by reparsing
- ;; FILENAME and masking off its name, type, and
- ;; version bits. But note not to call ourselves
- ;; recursively, because we don't want to
- ;; re-merge against *DEFAULT-PATHNAME-DEFAULTS*,
- ;; since PATHNAME may be a relative pathname.
- (merge-pathnames
- (nth-value
- 0
- (parse-native-namestring
- (multiple-value-bind (realpath errno)
- (sb!unix:unix-realpath
- (native-namestring
- (make-pathname
- :name :unspecific
- :type :unspecific
- :version :unspecific
- :defaults (parse-native-namestring
- filename
- (pathname-host pathname)
- (sane-default-pathname-defaults)))))
- (if realpath
- realpath
- (fail "couldn't resolve ~A" filename errno)))
- (pathname-host pathname)
- (sane-default-pathname-defaults)
- :as-directory t))
- pathname))
- (:author (sb!unix:uid-username uid))
- (:write-date (+ unix-to-universal-time mtime))))))
- ;; If we're still here, the file doesn't exist; error.
- (fail
- (format nil "failed to find the ~A of ~~A" query-for)
- pathspec errno))))))))
+ (declare (ignore ino nlink gid rdev size atime))
+ (labels ((parse (filename &key (as-directory
+ (eql (logand mode
+ sb!unix:s-ifmt)
+ sb!unix:s-ifdir)))
+ (values
+ (parse-native-namestring
+ filename
+ (pathname-host pathname)
+ (sane-default-pathname-defaults)
+ :as-directory as-directory)))
+ (resolve-problematic-symlink (&optional realpath-failed)
+ ;; SBCL has for many years had a policy that a pathname
+ ;; that names an existing, dangling or self-referential
+ ;; symlink denotes the symlink itself. stat(2) fails
+ ;; and sets errno to ENOENT or ELOOP respectively, but
+ ;; we must distinguish cases where the symlink exists
+ ;; from ones where there's a loop in the apparent
+ ;; containing directory.
+ ;; Also handles symlinks in /proc/pid/fd/ to
+ ;; pipes or sockets on Linux
+ (multiple-value-bind (linkp ignore ino mode nlink uid gid rdev
+ size atime mtime)
+ (sb!unix:unix-lstat filename)
+ (declare (ignore ignore ino mode nlink gid rdev size atime))
+ (when (and (or (= errno sb!unix:enoent)
+ (= errno sb!unix:eloop)
+ realpath-failed)
+ linkp)
+ (return-from query-file-system
+ (case query-for
+ (:existence
+ ;; We do this reparse so as to return a
+ ;; normalized pathname.
+ (parse filename :as-directory nil))
+ (:truename
+ ;; So here's a trick: since lstat succeded,
+ ;; FILENAME exists, so its directory exists and
+ ;; only the non-directory part is loopy. So
+ ;; let's resolve FILENAME's directory part with
+ ;; realpath(3), in order to get a canonical
+ ;; absolute name for the directory, and then
+ ;; return a pathname having PATHNAME's name,
+ ;; type, and version, but the rest from the
+ ;; truename of the directory. Since we turned
+ ;; PATHNAME into FILENAME "as a file", FILENAME
+ ;; does not end in a slash, and so we get the
+ ;; directory part of FILENAME by reparsing
+ ;; FILENAME and masking off its name, type, and
+ ;; version bits. But note not to call ourselves
+ ;; recursively, because we don't want to
+ ;; re-merge against *DEFAULT-PATHNAME-DEFAULTS*,
+ ;; since PATHNAME may be a relative pathname.
+ (merge-pathnames
+ (parse
+ (multiple-value-bind (realpath errno)
+ (sb!unix:unix-realpath
+ (native-namestring
+ (make-pathname
+ :name :unspecific
+ :type :unspecific
+ :version :unspecific
+ :defaults (parse filename
+ :as-directory nil))))
+ (or realpath
+ (fail "couldn't resolve ~A" filename errno)))
+ :as-directory t)
+ pathname))
+ (:author (sb!unix:uid-username uid))
+ (:write-date (+ unix-to-universal-time mtime))))))
+ ;; If we're still here, the file doesn't exist; error.
+ (fail
+ (format nil "failed to find the ~A of ~~A" query-for)
+ pathspec errno)))
+ (if existsp
+ (case query-for
+ (:existence (parse filename))
+ (:truename
+ ;; Note: in case the file is stat'able, POSIX
+ ;; realpath(3) gets us a canonical absolute
+ ;; filename, even if the post-merge PATHNAME
+ ;; is not absolute
+ (parse (or (sb!unix:unix-realpath filename)
+ (resolve-problematic-symlink t))))
+ (:author (sb!unix:uid-username uid))
+ (:write-date (+ unix-to-universal-time mtime)))
+ (resolve-problematic-symlink))))))))
(defun probe-file (pathspec)
(defun rename-file (file new-name)
#!+sb-doc
"Rename FILE to have the specified NEW-NAME. If FILE is a stream open to a
- file, then the associated file is renamed."
- (let* ((original (truename file))
- (original-namestring (native-namestring original :as-file t))
+file, then the associated file is renamed."
+ (let* ((original (merge-pathnames file (sane-default-pathname-defaults)))
+ (old-truename (truename original))
+ (original-namestring (native-namestring (physicalize-pathname original)
+ :as-file t))
(new-name (merge-pathnames new-name original))
(new-namestring (native-namestring (physicalize-pathname new-name)
:as-file t)))
:format-arguments (list original new-name (strerror error))))
(when (streamp file)
(file-name file new-name))
- (values new-name original (truename new-name)))))
+ (values new-name old-truename (truename new-name)))))
(defun delete-file (file)
#!+sb-doc
- "Delete the specified FILE."
- (let* ((truename (probe-file file))
- (namestring (when truename
- (native-namestring truename :as-file t))))
+ "Delete the specified FILE.
+
+If FILE is a stream, on Windows the stream is closed immediately. On Unix
+plaforms the stream remains open, allowing IO to continue: the OS resources
+associated with the deleted file remain available till the stream is closed as
+per standard Unix unlink() behaviour."
+ (let* ((pathname (translate-logical-pathname
+ (merge-pathnames file (sane-default-pathname-defaults))))
+ (namestring (native-namestring pathname :as-file t)))
+ #!+win32
(when (streamp file)
- (close file :abort t))
- (unless namestring
- (error 'simple-file-error
- :pathname file
- :format-control "~S doesn't exist."
- :format-arguments (list file)))
- (multiple-value-bind (res err) (sb!unix:unix-unlink namestring)
- (unless res
- (simple-file-perror "couldn't delete ~A" namestring err))))
+ (close file))
+ (multiple-value-bind (res err)
+ #!-win32 (sb!unix:unix-unlink namestring)
+ #!+win32 (or (sb!win32::native-delete-file namestring)
+ (values nil (- (sb!win32:get-last-error))))
+ (unless res
+ (simple-file-perror "couldn't delete ~A" namestring err))))
t)
+
+(defun directorize-pathname (pathname)
+ (if (or (pathname-name pathname)
+ (pathname-type pathname))
+ (make-pathname :directory (append (pathname-directory pathname)
+ (list (file-namestring pathname)))
+ :host (pathname-host pathname)
+ :device (pathname-device pathname))
+ pathname))
+
+(defun delete-directory (pathspec &key recursive)
+ "Deletes the directory designated by PATHSPEC (a pathname designator).
+Returns the truename of the directory deleted.
+
+If RECURSIVE is false \(the default), signals an error unless the directory is
+empty. If RECURSIVE is true, first deletes all files and subdirectories. If
+RECURSIVE is true and the directory contains symbolic links, the links are
+deleted, not the files and directories they point to.
+
+Signals an error if PATHSPEC designates a file or a symbolic link instead of a
+directory, or if the directory could not be deleted for any reason.
+
+Both
+
+ \(DELETE-DIRECTORY \"/tmp/foo\")
+ \(DELETE-DIRECTORY \"/tmp/foo/\")
+
+delete the \"foo\" subdirectory of \"/tmp\", or signal an error if it does not
+exist or if is a file or a symbolic link."
+ (declare (type pathname-designator pathspec))
+ (let ((physical (directorize-pathname
+ (physicalize-pathname
+ (merge-pathnames
+ pathspec (sane-default-pathname-defaults))))))
+ (labels ((recurse-merged (dir)
+ (lambda (sub)
+ (recurse (merge-pathnames sub dir))))
+ (delete-merged (dir)
+ (lambda (file)
+ (delete-file (merge-pathnames file dir))))
+ (recurse (dir)
+ (map-directory (recurse-merged dir) dir
+ :files nil
+ :directories t
+ :classify-symlinks nil)
+ (map-directory (delete-merged dir) dir
+ :files t
+ :directories nil
+ :classify-symlinks nil)
+ (delete-dir dir))
+ (delete-dir (dir)
+ (let ((namestring (native-namestring dir :as-file t)))
+ (multiple-value-bind (res errno)
+ #!+win32
+ (or (sb!win32::native-delete-directory namestring)
+ (values nil (- (sb!win32:get-last-error))))
+ #!-win32
+ (values
+ (not (minusp (alien-funcall
+ (extern-alien "rmdir"
+ (function int c-string))
+ namestring)))
+ (get-errno))
+ (if res
+ dir
+ (simple-file-perror
+ "Could not delete directory ~A"
+ namestring errno))))))
+ (if recursive
+ (recurse physical)
+ (delete-dir physical)))))
+
\f
(defun sbcl-homedir-pathname ()
(let ((sbcl-home (posix-getenv "SBCL_HOME")))
;; SBCL_HOME isn't set for :EXECUTABLE T embedded cores
(when (and sbcl-home (not (string= sbcl-home "")))
(parse-native-namestring sbcl-home
- #!-win32 sb!impl::*unix-host*
- #!+win32 sb!impl::*win32-host*
+ *physical-host*
*default-pathname-defaults*
:as-directory t))))
+(defun user-homedir-namestring (&optional username)
+ (flet ((not-empty (x)
+ (and (not (equal x "")) x)))
+ (if username
+ (sb!unix:user-homedir username)
+ (or (not-empty (posix-getenv "HOME"))
+ #!+win32
+ (not-empty (posix-getenv "USERPROFILE"))
+ #!+win32
+ (let ((drive (not-empty (posix-getenv "HOMEDRIVE")))
+ (path (not-empty (posix-getenv "HOMEPATH"))))
+ (and drive path
+ (concatenate 'string drive path)))
+ #!-win32
+ (not-empty (sb!unix:uid-homedir (sb!unix:unix-getuid)))
+ (error "Couldn't find home directory.")))))
+
;;; (This is an ANSI Common Lisp function.)
(defun user-homedir-pathname (&optional host)
#!+sb-doc
"Return the home directory of the user as a pathname. If the HOME
environment variable has been specified, the directory it designates
is returned; otherwise obtains the home directory from the operating
-system."
+system. HOST argument is ignored by SBCL."
(declare (ignore host))
- (let ((env-home (posix-getenv "HOME")))
- (values
- (parse-native-namestring
- (if (and env-home (not (string= env-home "")))
- env-home
- #!-win32
- (sb!unix:uid-homedir (sb!unix:unix-getuid))
- #!+win32
- ;; Needs to bypass PARSE-NATIVE-NAMESTRING & ENSURE-TRAILING-SLASH
- ;; What?! -- RMK, 2007-12-31
- (return-from user-homedir-pathname
- (sb!win32::get-folder-pathname sb!win32::csidl_profile)))
- #!-win32 sb!impl::*unix-host*
- #!+win32 sb!impl::*win32-host*
- *default-pathname-defaults*
- :as-directory t))))
+ (values
+ (parse-native-namestring
+ (or (user-homedir-namestring)
+ #!+win32
+ (sb!win32::get-folder-namestring sb!win32::csidl_profile))
+ *physical-host*
+ *default-pathname-defaults*
+ :as-directory t)))
\f
;;;; DIRECTORY
(canonicalize-directory (directory)
(let (pieces)
(dolist (piece directory)
- (if (and pieces (member piece '(:back :up)))
+ (cond
+ ((and pieces (member piece '(:back :up)))
;; FIXME: We should really canonicalize when we construct
;; pathnames. This is just wrong.
(case (car pieces)
((:relative :up :back)
(push piece pieces))
(t
- (pop pieces)))
- (push piece pieces)))
+ (pop pieces))))
+ ((equal piece ".")
+ ;; This case only really matters on Windows,
+ ;; because on POSIX, our call site (TRUENAME via
+ ;; QUERY-FILE-SYSTEM) only passes in pathnames from
+ ;; realpath(3), in which /./ has been removed
+ ;; already. Windows, however, depends on us to
+ ;; perform this fixup. -- DFL
+ )
+ (t
+ (push piece pieces))))
(nreverse pieces))))
(let ((name (simplify (pathname-name pathname)))
(type (simplify (pathname-type pathname)))
(macrolet ((,iterator ()
`(funcall ,',one-iter)))
,@body)))
+ #!+win32
+ (sb!win32::native-call-with-directory-iterator
+ #'iterate ,namestring ,errorp)
+ #!-win32
(call-with-native-directory-iterator #'iterate ,namestring ,errorp))))
(defun call-with-native-directory-iterator (function namestring errorp)
;;; This is our core directory access interface that we use to implement
;;; DIRECTORY.
-(defun map-directory (function directory &key (files t) (directories t) (errorp t))
+(defun map-directory (function directory &key (files t) (directories t)
+ (classify-symlinks t) (errorp t))
#!+sb-doc
"Map over entries in DIRECTORY. Keyword arguments specify which entries to
map over, and how:
as a file in DIRECTORY. Otherwise the pathname used is a directory
pathname. Defaults to T.
+ :CLASSIFY-SYMLINKS
+ If true, the decision to call FUNCTION with the pathname of a symbolic link
+ depends on the resolution of the link: if it points to a directory, it is
+ considered a directory entry, otherwise a file entry. If false, all
+ symbolic links are considered file entries. In both cases the pathname used
+ for the symbolic link is not fully resolved, but names it as an immediate
+ child of DIRECTORY. Defaults to T.
+
:ERRORP
If true, signal an error if DIRECTORY does not exist, cannot be read, etc.
Defaults to T.
-On platforms supporting symbolic links the decision to call FUNCTION with its
-pathname depends on the resolution of the link: if it points to a directory,
-it is considered a directory entry. Whether it is considered a file or a
-directory, the provided pathname is not fully resolved, but rather names the
-symbolic link as an immediate child of DIRECTORY.
-
Experimental: interface subject to change."
(declare (pathname-designator directory))
(let* ((fun (%coerce-callable-to-fun function))
(as-files (eq :as-files directories))
(physical (physicalize-pathname directory))
- ;; Not QUERY-FILE-SYSTEM :EXISTENCE, since it doesn't work on Windows
- ;; network shares.
- (realname (sb!unix:unix-realpath (native-namestring physical :as-file t)))
+ (realname (query-file-system physical :existence nil))
(canonical (if realname
(parse-native-namestring realname
(pathname-host physical)
:as-directory (and dirp (not as-files)))
physical))))
(with-native-directory-iterator (next dirname :errorp errorp)
- (loop for name = (next)
- while name
- do (let* ((full (concatenate 'string dirname name))
- (kind (native-file-kind full)))
- (when kind
- (case kind
- (:directory
- (when directories
- (map-it name t)))
- (:symlink
- (let* ((tmpname (merge-pathnames
- (parse-native-namestring
- name nil physical :as-directory nil)
- physical))
- (truename (query-file-system tmpname :truename nil)))
- (if (or (not truename)
- (or (pathname-name truename) (pathname-type truename)))
- (when files
- (funcall fun tmpname))
- (when directories
- (map-it name t)))))
- (t
- ;; Anything else parses as a file.
- (when files
- (map-it name nil)))))))))))
+ (loop
+ ;; provision for FindFirstFileExW-based iterator that should be used
+ ;; on Windows: file kind is known instantly there, so we'll have it
+ ;; returned by (next) soon.
+ (multiple-value-bind (name kind) (next)
+ (unless (or name kind) (return))
+ (unless kind
+ (setf kind (native-file-kind
+ (concatenate 'string dirname name))))
+ (when kind
+ (case kind
+ (:directory
+ (when directories
+ (map-it name t)))
+ (:symlink
+ (if classify-symlinks
+ (let* ((tmpname (merge-pathnames
+ (parse-native-namestring
+ name nil physical :as-directory nil)
+ physical))
+ (truename (query-file-system tmpname :truename nil)))
+ (if (or (not truename)
+ (or (pathname-name truename) (pathname-type truename)))
+ (when files
+ (funcall fun tmpname))
+ (when directories
+ (map-it name t))))
+ (when files
+ (map-it name nil))))
+ (t
+ ;; Anything else parses as a file.
+ (when files
+ (map-it name nil)))))))))))
;;; Part of DIRECTORY: implements matching the directory spec. Calls FUNCTION
;;; with all DIRECTORIES that match the directory portion of PATHSPEC.
((or (null one) (eq one :unspecific)) two)
((or (null two) (eq two :unspecific)) one)
((string= one two) one)
- (t nil)))
+ (t (return-from pathname-intersections nil))))
(intersect-directory (one two)
(aver (typep one '(or null (member :wild :unspecific) list)))
(aver (typep two '(or null (member :wild :unspecific) list)))
(car one) (car two)) x))
(intersect-directory-helper (cdr one) (cdr two)))))))))
\f
+
+(defun directory-pathname-p (pathname)
+ (and (pathnamep pathname)
+ (null (pathname-name pathname))
+ (null (pathname-type pathname))))
+
(defun ensure-directories-exist (pathspec &key verbose (mode #o777))
#!+sb-doc
"Test whether the directories containing the specified file
(error 'simple-file-error
:format-control "bad place for a wild pathname"
:pathname pathspec))
- (let ((dir (pathname-directory pathname)))
- (loop for i from 1 upto (length dir)
- do (let ((newpath (make-pathname
- :host (pathname-host pathname)
- :device (pathname-device pathname)
- :directory (subseq dir 0 i))))
- (unless (probe-file newpath)
- (let ((namestring (coerce (native-namestring newpath)
- 'string)))
- (when verbose
- (format *standard-output*
- "~&creating directory: ~A~%"
- namestring))
- (sb!unix:unix-mkdir namestring mode)
- (unless (probe-file newpath)
- (restart-case (error
- 'simple-file-error
- :pathname pathspec
- :format-control
- "can't create directory ~A"
- :format-arguments (list namestring))
- (retry ()
- :report "Retry directory creation."
- (ensure-directories-exist
- pathspec
- :verbose verbose :mode mode))
- (continue ()
- :report
- "Continue as if directory creation was successful."
- nil)))
- (setf created-p t)))))
+ (let* ((dir (pathname-directory pathname))
+ (*default-pathname-defaults*
+ (make-pathname :directory dir :device (pathname-device pathname)))
+ (dev (pathname-device pathname)))
+ (loop for i from (case dev (:unc 3) (otherwise 2))
+ upto (length dir)
+ do
+ (let* ((newpath (make-pathname
+ :host (pathname-host pathname)
+ :device dev
+ :directory (subseq dir 0 i)))
+ (probed (probe-file newpath)))
+ (unless (directory-pathname-p probed)
+ (let ((namestring (coerce (native-namestring newpath)
+ 'string)))
+ (when verbose
+ (format *standard-output*
+ "~&creating directory: ~A~%"
+ namestring))
+ (sb!unix:unix-mkdir namestring mode)
+ (unless (directory-pathname-p (probe-file newpath))
+ (restart-case
+ (error
+ 'simple-file-error
+ :pathname pathspec
+ :format-control
+ (if (and probed
+ (not (directory-pathname-p probed)))
+ "Can't create directory ~A,~
+ ~%a file with the same name already exists."
+ "Can't create directory ~A")
+ :format-arguments (list namestring))
+ (retry ()
+ :report "Retry directory creation."
+ (ensure-directories-exist
+ pathspec
+ :verbose verbose :mode mode))
+ (continue ()
+ :report
+ "Continue as if directory creation was successful."
+ nil)))
+ (setf created-p t)))))
(values pathspec created-p))))
(/show0 "filesys.lisp 1000")
projects / sbcl.git / blobdiff