diff options
Diffstat (limited to 'SunOS5/mblk_misc.c')
| -rw-r--r-- | SunOS5/mblk_misc.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/SunOS5/mblk_misc.c b/SunOS5/mblk_misc.c new file mode 100644 index 0000000000000..85acff8b35514 --- /dev/null +++ b/SunOS5/mblk_misc.c @@ -0,0 +1,122 @@ +/* + * Copyright (C) 2012 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + */ +#ifndef __hpux +#pragma ident "@(#)$Id: mblk_misc.c,v 1.1.2.2 2012/07/22 08:04:24 darren_r Exp $" +#else +struct uio; +#endif + +#include <sys/systm.h> +#include <sys/types.h> +#include <sys/stream.h> + +#ifndef MTYPE +# define MTYPE(m) ((m)->b_datap->db_type) +#endif + +#ifndef MIN +# define MIN(a,b) (((a)<(b))?(a):(b)) +#endif + +#ifdef __hpux +# define BCOPY(a,b,c) bcopy((caddr_t)a, (caddr_t)b, c) +#endif +#ifdef sun +# define BCOPY(a,b,c) bcopy((char *)a, (char *)b, c) +#endif + +void m_copydata(min, off, len, buf) +mblk_t *min; +size_t off, len; +char *buf; +{ + u_char *s, *bp = (u_char *)buf; + size_t mlen, olen, clen; + mblk_t *m; + + for (m = min; (m != NULL) && (len > 0); m = m->b_cont) { + if (MTYPE(m) != M_DATA) + continue; + s = m->b_rptr; + mlen = m->b_wptr - s; + olen = MIN(off, mlen); + if ((olen == mlen) || (olen < off)) { + off -= olen; + continue; + } else if (olen) { + off -= olen; + s += olen; + mlen -= olen; + } + clen = MIN(mlen, len); + BCOPY(s, bp, clen); + len -= clen; + bp += clen; + } +} + + +void m_copyback(min, off, len, buf) +mblk_t *min; +size_t off, len; +char *buf; +{ + u_char *s, *bp = (u_char *)buf; + size_t mlen, olen, clen; + mblk_t *m, *mp; + + for (m = min, mp = NULL; (m != NULL) && (len > 0); m = m->b_cont) { + mp = m; + if (MTYPE(m) != M_DATA) + continue; + + s = m->b_rptr; + mlen = m->b_wptr - s; + olen = MIN(off, mlen); + if ((olen == mlen) || (olen < off)) { + off -= olen; + continue; + } else if (olen) { + off -= olen; + s += olen; + mlen -= olen; + } + clen = MIN(mlen, len); + BCOPY(bp, s, clen); + len -= clen; + bp += clen; + } + + if ((m == NULL) && (mp != NULL)) { + if (len > 0) { + mlen = mp->b_datap->db_lim - mp->b_wptr; + if (mlen > 0) { + if (mlen > len) + mlen = len; + bcopy((char *)bp, (char *)mp->b_wptr, mlen); + bp += mlen; + len -= mlen; + mp->b_wptr += mlen; +#ifdef STRUIO_IP +# if SOLARIS2 < 10 + mp->b_datap->db_struiolim = mp->b_wptr; +# endif + mp->b_datap->db_struioflag &= ~STRUIO_IP; +#endif + } + } + + if (len > 0) { + m = allocb(len, BPRI_MED); + if (m != NULL) { + bcopy((char *)bp, (char *)m->b_wptr, len); + m->b_band = mp->b_band; + m->b_wptr += len; + linkb(mp, m); + } + } + } +} |