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Clarify the "chmod 0500" news, and correct the vague

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statements about compatibility with BSD.
This commit is contained in:
Paul Eggert
2006-07-25 18:38:58 +00:00
parent 97e1e9019d
commit b7f9a7ed05
2 changed files with 21 additions and 6 deletions
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ChangeLog
+7
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@@ -1,3 +1,10 @@
2006-07-25 Paul Eggert <eggert@cs.ucla.edu>
* tests/cp/fail-perm: Use "chmod 0500" rather than "chmod 500".
Problem report and fix from Bob Proulx.
* NEWS: Clarify the "chmod 0500" news, and correct the vague
statements about compatibility with BSD.
2006-07-25 Jim Meyering <jim@meyering.net>
* src/ls.c (gobble_file): When handling a stat-failed entry,
NEWS
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@@ -26,13 +26,21 @@ GNU coreutils NEWS -*- outline -*-
basename and dirname now treat // as different from / on platforms
where the two are distinct.
chmod, install, and mkdir now leave a directory's set-user-ID and
set-group-ID bits alone unless you explicitly request otherwise.
This is for compatibility with BSD and other systems. For example,
chmod, install, and mkdir now preserve a directory's set-user-ID and
set-group-ID bits unless you explicitly request otherwise. E.g.,
`chmod 755 DIR' and `chmod u=rwx,go=rx DIR' now preserve DIR's
set-user-ID and set-group-ID bits instead of clearing them. If
you want to clear the bits you can mention them explicitly, e.g.,
`chmod 0755 DIR' and `chmod a-s,u=rwx,go=rx DIR'.
set-user-ID and set-group-ID bits instead of clearing them, and
similarly for `mkdir -m 755 DIR' and `mkdir -m u=rwx,go=rx DIR'. To
clear the bits, mention them explicitly, e.g., `chmod 0755 DIR' or
`mkdir -m a-s,u=rwx,go=rx DIR'. This change is for convenience on
systems where these bits inherit from parents. Unfortunately other
operating systems are not consistent here, and portable scripts
cannot assume the bits are set, cleared, or preserved, even when the
bits are explicitly mentioned. For example, OpenBSD 3.9 `mkdir -m
777 D' preserves D's setgid bit but `chmod 777 D' clears it.
Conversely, Solaris 10 `mkdir -m 777 D', `mkdir -m g-s D', and
`chmod 0777 D' all preserve D's setgid bit, and you must use
something like `chmod g-s D' to clear it.
`cp --link --no-dereference' now works also on systems where the
link system call cannot create a hard link to a symbolic link.