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Fix regression issue after r267961. Handle special string case for

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SYSCTLs like previously.

MFC after:	2 weeks
Reported by:	several people
This commit is contained in:
Hans Petter Selasky 2014-06-28 03:59:04 +00:00
parent af3b2549c4
commit 6a3287f889
1 changed files with 5 additions and 2 deletions
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7
sys/kern/kern_sysctl.c
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@ -1210,9 +1210,12 @@ sysctl_handle_string(SYSCTL_HANDLER_ARGS)
size_t outlen; size_t outlen;
int error = 0; int error = 0;
/* check for zero-length buffer */ /*
* A zero-length buffer indicates a fixed size read-only
* string:
*/
if (arg2 == 0) if (arg2 == 0)
return (ENOMEM); arg2 = strlen((char *)arg1) + 1;
if (req->oldptr != NULL) { if (req->oldptr != NULL) {
char *tmparg; char *tmparg;