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| author | Paul Eggert <eggert@cs.ucla.edu> | 2020-02-23 16:19:42 -0800 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2020-02-23 16:45:50 -0800 |
| commit | 9d626dffc6ba62c0d7a1a5c712f576ed8684fd66 (patch) | |
| tree | 6cc8fbe8e5bc02c3bb74139710814a0400e91a8a /lisp/eshell/em-pred.el | |
| parent | c4ca8219dd6b8f06e67a0b767475b1259653b8e0 (diff) | |
| download | emacs-9d626dffc6ba62c0d7a1a5c712f576ed8684fd66.tar.gz emacs-9d626dffc6ba62c0d7a1a5c712f576ed8684fd66.tar.bz2 emacs-9d626dffc6ba62c0d7a1a5c712f576ed8684fd66.zip | |
Add 'nofollow' flag to set-file-modes etc.
This avoids some race conditions (Bug#39683). E.g., if some other
program changes a file to a symlink between the time Emacs creates
the file and the time it changes the file’s permissions, using the
new flag prevents Emacs from inadvertently changing the
permissions of a victim in some completely unrelated directory.
* admin/merge-gnulib (GNULIB_MODULES): Add fchmodat.
* doc/lispref/files.texi (Testing Accessibility, Changing Files):
* doc/lispref/os.texi (File Notifications):
* etc/NEWS:
Adjust documentation accordingly.
* lib/chmodat.c, lib/fchmodat.c, lib/lchmod.c, m4/fchmodat.m4:
* m4/lchmod.m4: New files, copied from Gnulib.
* lib/gnulib.mk.in: Regenerate.
* lisp/dired-aux.el (dired-do-chmod):
* lisp/doc-view.el (doc-view-make-safe-dir):
* lisp/emacs-lisp/autoload.el (autoload--save-buffer):
* lisp/emacs-lisp/bytecomp.el (byte-compile-file):
* lisp/eshell/em-pred.el (eshell-pred-file-mode):
* lisp/files.el (backup-buffer-copy, copy-directory):
* lisp/gnus/mail-source.el (mail-source-movemail):
* lisp/gnus/mm-decode.el (mm-display-external):
* lisp/gnus/nnmail.el (nnmail-write-region):
* lisp/net/tramp-adb.el (tramp-adb-handle-file-local-copy)
(tramp-adb-handle-write-region):
* lisp/net/tramp-sh.el (tramp-do-copy-or-rename-file-directly):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-write-region):
* lisp/net/tramp.el (tramp-handle-write-region)
(tramp-make-tramp-temp-file):
* lisp/server.el (server-ensure-safe-dir):
* lisp/url/url-util.el (url-make-private-file):
When getting or setting file modes, avoid following symbolic links
when the file is not supposed to be a symbolic link.
* lisp/doc-view.el (doc-view-make-safe-dir):
Omit no-longer-needed separate symlink test.
* lisp/gnus/gnus-util.el (gnus-set-file-modes):
* lisp/net/tramp.el (tramp-handle-file-modes):
* lisp/net/tramp-gvfs.el (tramp-gvfs-handle-set-file-modes):
* src/fileio.c (symlink_nofollow_flag): New function.
(Ffile_modes, Fset_file_modes):
Support an optional FLAG arg. All C callers changed.
* lisp/net/ange-ftp.el (ange-ftp-set-file-modes):
* lisp/net/tramp-adb.el (tramp-adb-handle-set-file-modes):
* lisp/net/tramp-sh.el (tramp-sh-handle-set-file-modes):
* lisp/net/tramp-smb.el (tramp-smb-handle-set-file-modes):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-handle-set-file-modes):
Accept an optional FLAG arg that is currently ignored,
and add a FIXME comment for it.
* m4/gnulib-comp.m4: Regenerate.
Diffstat (limited to 'lisp/eshell/em-pred.el')
| -rw-r--r-- | lisp/eshell/em-pred.el | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/eshell/em-pred.el b/lisp/eshell/em-pred.el index 04bf3ff8998..7219af45f54 100644 --- a/lisp/eshell/em-pred.el +++ b/lisp/eshell/em-pred.el @@ -478,7 +478,7 @@ that `ls -l' will show in the first column of its display." (defsubst eshell-pred-file-mode (mode) "Return a test which tests that MODE pertains to the file." `(lambda (file) - (let ((modes (file-modes file))) + (let ((modes (file-modes file 'nofollow))) (if modes (logand ,mode modes))))) |