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If the "-alldirs" export option was used for the V4: line, mountd

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would crash in check_options() since dp == NULL for the V4: line.
This patch moves the check for options allowed on the V4: line to
ahead of where dp is used to avoid this crash.

Reported by:	mamalos AT eng.auth.gr
MFC after:	1 week
This commit is contained in:
Rick Macklem 2010-05-06 00:24:08 +00:00
parent 1d4942f42f
commit 56cfc5ed12
1 changed files with 4 additions and 4 deletions
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8
usr.sbin/mountd/mountd.c
View file

@ -2881,16 +2881,16 @@ check_options(dp)
syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
return (1);
}
if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
syslog(LOG_ERR, "-alldirs has multiple directories");
return (1);
}
if (v4root_phase > 0 &&
(opt_flags &
~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
return (1);
}
if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
syslog(LOG_ERR, "-alldirs has multiple directories");
return (1);
}
return (0);
}