PSARC 2008/367 Remove MAXIOCBSZ

6711691 Remove MAXIOCBSZ logic

1 files changed, 11 insertions, 17 deletions

diff --git a/usr/src/uts/common/os/strsubr.c b/usr/src/uts/common/os/strsubr.c
index a7750e2ec3..cd8a0a2a62 100644
--- a/usr/src/uts/common/os/strsubr.c
+++ b/usr/src/uts/common/os/strsubr.c
@@ -1450,7 +1450,6 @@ putiocd(mblk_t *bp, char *arg, int flag, cred_t *cr)
 {
 	mblk_t *tmp;
 	ssize_t  count;
-	size_t n;
 	int error = 0;
 
 	ASSERT((flag & (U_TO_K | K_TO_K)) == U_TO_K ||
@@ -1468,23 +1467,18 @@ putiocd(mblk_t *bp, char *arg, int flag, cred_t *cr)
 	 */
 	ASSERT(count >= 0);
 
-	while (count > 0) {
-		n = MIN(MAXIOCBSZ, count);
-		if ((tmp = allocb_cred_wait(n, (flag & STR_NOSIG), &error,
-		    cr)) == NULL) {
-			return (error);
-		}
-		error = strcopyin(arg, tmp->b_wptr, n, flag & (U_TO_K|K_TO_K));
-		if (error != 0) {
-			freeb(tmp);
-			return (error);
-		}
-		arg += n;
-		DB_CPID(tmp) = curproc->p_pid;
-		tmp->b_wptr += n;
-		count -= n;
-		bp = (bp->b_cont = tmp);
+	if ((tmp = allocb_cred_wait(count, (flag & STR_NOSIG), &error, cr)) ==
+	    NULL) {
+		return (error);
+	}
+	error = strcopyin(arg, tmp->b_wptr, count, flag & (U_TO_K|K_TO_K));
+	if (error != 0) {
+		freeb(tmp);
+		return (error);
 	}
+	DB_CPID(tmp) = curproc->p_pid;
+	tmp->b_wptr += count;
+	bp->b_cont = tmp;
 
 	return (0);
 }