Author: pfg
Date: Mon Jul 25 15:04:15 2016
New Revision: 303303
URL: https://svnweb.freebsd.org/changeset/base/303303

Log:
  MFC r302911:
  mail(1): Avoid closing negative file descriptors.
  
  CID:          1008105, 1008106

Modified:
  stable/10/usr.bin/mail/quit.c
  stable/10/usr.bin/mail/v7.local.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/usr.bin/mail/quit.c
==============================================================================
--- stable/10/usr.bin/mail/quit.c       Mon Jul 25 15:03:14 2016        
(r303302)
+++ stable/10/usr.bin/mail/quit.c       Mon Jul 25 15:04:15 2016        
(r303303)
@@ -228,7 +228,8 @@ quit(void)
                        return;
                }
                (void)Fclose(obuf);
-               (void)close(open(mbox, O_CREAT | O_TRUNC | O_WRONLY, 0600));
+               if ((fd = open(mbox, O_CREAT | O_TRUNC | O_WRONLY, 0600)) >= 0)
+                       (void)close(fd);
                if ((obuf = Fopen(mbox, "r+")) == NULL) {
                        warn("%s", mbox);
                        (void)Fclose(ibuf);

Modified: stable/10/usr.bin/mail/v7.local.c
==============================================================================
--- stable/10/usr.bin/mail/v7.local.c   Mon Jul 25 15:03:14 2016        
(r303302)
+++ stable/10/usr.bin/mail/v7.local.c   Mon Jul 25 15:04:15 2016        
(r303303)
@@ -68,9 +68,12 @@ findmail(char *user, char *buf, int bufl
 void
 demail(void)
 {
+       int fd;
 
        if (value("keep") != NULL || rm(mailname) < 0)
-               (void)close(open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600));
+               if ((fd = open(mailname, O_CREAT | O_TRUNC | O_WRONLY, 0600)) >=
+                   0)
+                       (void)close(fd);
 }
 
 /*
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