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| author | Paul Eggert <eggert@cs.ucla.edu> | 2012-12-14 10:59:00 -0800 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2012-12-14 10:59:00 -0800 |
| commit | 97976f9f3fcf588535bf4afad71de92860bb2f8e (patch) | |
| tree | 48af44cc93624fd119f59ceb94fbb5c5f3eaaf7c /doc/lispref/os.texi | |
| parent | ad966fe7542070b5c9aa34ed019d586e7c3adae6 (diff) | |
Fix permissions bugs with setgid directories etc.
* configure.ac (BSD4_2): Remove; no longer needed.
* admin/CPP-DEFINES (BSD4_2): Remove.
* doc/lispintro/emacs-lisp-intro.texi (Files List):
directory-files-and-attributes now outputs t for attribute that's
now a placeholder.
* doc/lispref/files.texi (Testing Accessibility): Document GROUP arg
of file-ownership-preserved-p.
(File Attributes): Document that 9th element is now
just a placeholder.
* doc/lispref/os.texi (User Identification): Document new functions group-gid,
group-real-gid.
* etc/NEWS: Document changes to file-attributes,
file-ownership-preserved-p.
Mention new functions group-gid, group-real-gid.
* lisp/files.el (backup-buffer): Don't rely on 9th output of
file-attributes, as it's now a placeholder. Instead, use the new
optional arg of file-ownership-preserved-p.
(file-ownership-preserved-p): New optional arg GROUP.
Fix mishandling of setuid directories that would cause this
function to return t when it should have returned nil.
Document what happens if the file does not exist, and when
it's not known whether the ownership will be preserved.
* lisp/net/tramp-sh.el (tramp-sh-handle-file-ownership-preserved-p):
Likewise.
(tramp-get-local-gid): Use group-gid for integer, as that's
faster and more reliable.
* src/dired.c (Ffile_attributes): Return t as the 9th attribute,
to mark it as a placeholder. The old value was often wrong.
The only user of this attribute has been changed to use
file-ownership-preserved-p instead, with its new group arg.
* src/editfns.c (Fgroup_gid, Fgroup_real_gid): New functions.
Fixes: debbugs:13125
Diffstat (limited to 'doc/lispref/os.texi')
| -rw-r--r-- | doc/lispref/os.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/lispref/os.texi b/doc/lispref/os.texi index e2161f51489..4b9cdfaae9e 100644 --- a/doc/lispref/os.texi +++ b/doc/lispref/os.texi @@ -1157,6 +1157,16 @@ This function returns the effective @acronym{UID} of the user. The value may be a floating point number. @end defun +@defun group-gid +This function returns the effective @acronym{GID} of the Emacs process. +The value may be a floating point number. +@end defun + +@defun group-real-gid +This function returns the real @acronym{GID} of the Emacs process. +The value may be a floating point number. +@end defun + @defun system-users This function returns a list of strings, listing the user names on the system. If Emacs cannot retrieve this information, the return value |