diff options
| author | phk <phk@FreeBSD.org> | 1998-04-11 20:31:46 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1998-04-11 20:31:46 +0000 |
| commit | ead640e9676fd74d1ea6bc9e88cff6897c75a951 (patch) | |
| tree | 224cd3497e96edf3b8409f2182d5a07f07e52b65 /sys/kern/uipc_syscalls.c | |
| parent | 9221f256f8ea86770b5c1717d83a63929fd506ff (diff) | |
| download | FreeBSD-src-ead640e9676fd74d1ea6bc9e88cff6897c75a951.zip FreeBSD-src-ead640e9676fd74d1ea6bc9e88cff6897c75a951.tar.gz | |
setsockopt() transports user option data in an mbuf. if the user
data is greater than MLEN, setsockopt is unable to pass it onto
the protocol handler. Allocate a cluster in such case.
PR: 2575
Reviewed by: phk
Submitted by: Julian Assange proff@iq.org
Diffstat (limited to 'sys/kern/uipc_syscalls.c')
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index 76470e9..c63ec40 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)uipc_syscalls.c 8.4 (Berkeley) 2/21/94 - * $Id: uipc_syscalls.c,v 1.36 1998/02/09 06:09:27 eivind Exp $ + * $Id: uipc_syscalls.c,v 1.37 1998/03/28 10:33:08 bde Exp $ */ #include "opt_compat.h" @@ -985,12 +985,17 @@ setsockopt(p, uap) error = getsock(p->p_fd, uap->s, &fp); if (error) return (error); - if (uap->valsize > MLEN) + if (uap->valsize > MCLBYTES) return (EINVAL); if (uap->val) { m = m_get(M_WAIT, MT_SOOPTS); if (m == NULL) return (ENOBUFS); + if (uap->valsize > MLEN) { + MCLGET(m, M_WAIT); + if(!(m->m_flags & M_EXT)) + return (ENOBUFS); + } error = copyin(uap->val, mtod(m, caddr_t), (u_int)uap->valsize); if (error) { (void) m_free(m); |
