16 lines
600 B
Diff
16 lines
600 B
Diff
diff -up shadow-4.2.1/lib/commonio.c.no-lock-dos shadow-4.2.1/lib/commonio.c
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--- shadow-4.2.1/lib/commonio.c.no-lock-dos 2015-08-27 15:09:17.101537812 +0200
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+++ shadow-4.2.1/lib/commonio.c 2015-08-27 15:11:06.643011248 +0200
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@@ -140,7 +140,10 @@ static int do_lock_file (const char *fil
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int retval;
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char buf[32];
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- fd = open (file, O_CREAT | O_EXCL | O_WRONLY, 0600);
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+ /* We depend here on the fact, that the file name is pid-specific.
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+ * So no O_EXCL here and no DoS.
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+ */
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+ fd = open (file, O_CREAT | O_TRUNC | O_WRONLY, 0600);
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if (-1 == fd) {
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if (log) {
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(void) fprintf (stderr,
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