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build: consistently use freopen-safer

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cat, head, ptx, shuf, tac, tail, tee, tr, and uniq used freopen
on stdout, and were potentially vulnerable.  dircolors, du, and
tsort only used it on stdin, which is unaffected by freopen_safer,
but this covers all uses for consistency.

* cfg.mk (sc_require_stdio_safer): New rule.
* gl/modules/xfreopen (Depends-on): Add freopen-safer.
* gl/lib/xfreopen.c (includes): Use stdio--.h.
* src/ptx.c (includes): Likewise.
* src/shuf.c (includes): Likewise.
* src/uniq.c (includes): Likewise.
* src/dircolors.c (includes): Likewise.
* src/du.c (includes): Likewise.
* src/tsort.c (includes): Likewise.
This commit is contained in:
Eric Blake
2009-11-05 16:48:09 -07:00
parent c768e2231b
commit 56b85e035b
9 changed files with 20 additions and 6 deletions
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1
gl/lib/xfreopen.c
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@@ -21,6 +21,7 @@
#include "error.h"
#include "exitfail.h"
#include "quote.h"
#include "stdio--.h"
#include "gettext.h"
#define _(msgid) gettext (msgid)