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authorMichael Albinus <michael.albinus@gmx.de>2017-10-03 16:15:08 +0200
committerMichael Albinus <michael.albinus@gmx.de>2017-10-03 16:15:08 +0200
commit92045f4546b9708dc9f69954799d211c1f56ff1e (patch)
tree3da042d305f9a7ef78c1ee9e49463f13db3900ba /src/fileio.c
parentf204e6e1a418073bd1e24a83947f1f3c53581c7f (diff)
downloademacs-92045f4546b9708dc9f69954799d211c1f56ff1e.tar.gz
Add file name handler support for file-system-info
* doc/lispref/files.texi (Magic File Names): Add file-system-info. * etc/NEWS: Mention get-free-disk-space working on remote systems. * lisp/files.el (get-free-disk-space): Do not block on remote systems. * src/w32fns.c (Ffile_system_info): * src/fileio.c (Ffile_system_info): Call file name handler if exists. (syms_of_fileio): Add Qfile_system_info.
Diffstat (limited to 'src/fileio.c')
-rw-r--r--src/fileio.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/fileio.c b/src/fileio.c
index 11370279d1b..d460f123a82 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -5789,6 +5789,18 @@ If the underlying system call fails, value is nil. */)
(Lisp_Object filename)
{
Lisp_Object encoded = ENCODE_FILE (Fexpand_file_name (filename, Qnil));
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ Lisp_Object handler = Ffind_file_name_handler (encoded, Qfile_system_info);
+ if (!NILP (handler))
+ {
+ Lisp_Object result = call2 (handler, Qfile_system_info, encoded);
+ if (CONSP (result) || NILP (result))
+ return result;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
+
struct fs_usage u;
if (get_fs_usage (SSDATA (encoded), NULL, &u) != 0)
return Qnil;
@@ -5870,6 +5882,7 @@ syms_of_fileio (void)
DEFSYM (Qwrite_region, "write-region");
DEFSYM (Qverify_visited_file_modtime, "verify-visited-file-modtime");
DEFSYM (Qset_visited_file_modtime, "set-visited-file-modtime");
+ DEFSYM (Qfile_system_info, "file-system-info");
/* The symbol bound to coding-system-for-read when
insert-file-contents is called for recovering a file. This is not