bug fix in m_pullup

SCCS-vsn: sys/kern/uipc_mbuf.c 1.29

diff --git a/usr/src/sys/kern/uipc_mbuf.c b/usr/src/sys/kern/uipc_mbuf.c
index 41920d1..52db977 100644 (file)
--- a/usr/src/sys/kern/uipc_mbuf.c
+++ b/usr/src/sys/kern/uipc_mbuf.c
@@ -1,4 +1,4 @@
-/*     uipc_mbuf.c     1.28    82/01/25        */
+/*     uipc_mbuf.c     1.29    82/02/08        */

 
 #include "../h/param.h"
 #include "../h/dir.h"
 
 #include "../h/param.h"
 #include "../h/dir.h"


@@ -325,6 +325,7 @@ m_pullup(m0, len)
        register struct mbuf *m, *n;
        int cnt;
 
        register struct mbuf *m, *n;
        int cnt;
 

+       n = m0;

        if (len > MLEN)
                goto bad;
        MGET(m, 0);
        if (len > MLEN)
                goto bad;
        MGET(m, 0);


@@ -332,7 +333,6 @@ m_pullup(m0, len)
                goto bad;
        m->m_off = MMINOFF;
        m->m_len = 0;
                goto bad;
        m->m_off = MMINOFF;
        m->m_len = 0;

-       n = m0;

        do {
                cnt = MIN(MLEN - m->m_len, len);
                if (cnt > n->m_len)
        do {
                cnt = MIN(MLEN - m->m_len, len);
                if (cnt > n->m_len)


@@ -353,6 +353,6 @@ m_pullup(m0, len)
        m->m_next = n;
        return (m);
 bad:
        m->m_next = n;
        return (m);
 bad:

-       m_freem(m0);
+       m_freem(n);

        return (0);
 }
        return (0);
 }