diff options
author | tegge <tegge@FreeBSD.org> | 1997-06-12 14:08:20 +0000 |
---|---|---|
committer | tegge <tegge@FreeBSD.org> | 1997-06-12 14:08:20 +0000 |
commit | f8fabab00256f975a49438e7d272c08b92a4394e (patch) | |
tree | 1a39aa5bd42f7939f4100b56bc90fa1ebe89633e /sys/nfs | |
parent | adc55c1f8b546487381d05170174c11cc7583f8a (diff) | |
download | FreeBSD-src-f8fabab00256f975a49438e7d272c08b92a4394e.zip FreeBSD-src-f8fabab00256f975a49438e7d272c08b92a4394e.tar.gz |
Move commonly used code into static functions in order to reduce kernel bloat.
Diffstat (limited to 'sys/nfs')
-rw-r--r-- | sys/nfs/bootp_subr.c | 232 |
1 files changed, 93 insertions, 139 deletions
diff --git a/sys/nfs/bootp_subr.c b/sys/nfs/bootp_subr.c index da94bd9..3d0f587 100644 --- a/sys/nfs/bootp_subr.c +++ b/sys/nfs/bootp_subr.c @@ -1,4 +1,4 @@ -/* $Id: bootp_subr.c,v 1.2 1997/05/11 18:05:39 tegge Exp $ */ +/* $Id: bootp_subr.c,v 1.3 1997/05/14 01:31:54 tegge Exp $ */ /* * Copyright (c) 1995 Gordon Ross, Adam Glass @@ -116,6 +116,10 @@ static int setfs __P((struct sockaddr_in *addr, char *path, char *p)); static int getdec __P((char **ptr)); static char *substr __P((char *a,char *b)); static void mountopts __P((struct nfs_args *args, char *p)); +static int xdr_opaque_decode __P((struct mbuf **ptr,u_char *buf, + int len)); +static int xdr_int_decode __P((struct mbuf **ptr,int *iptr)); +static void printip __P((char *prefix,struct in_addr addr)); #ifdef BOOTP_DEBUG void bootpboot_p_sa(struct sockaddr *sa,struct sockaddr *ma); @@ -558,19 +562,6 @@ bootpc_adjust_interface(struct ifreq *ireq,struct socket *so, return error; } -#if 0 - olddst.sin_addr.s_addr = INADDR_BROADCAST; - - error = rtrequest(RTM_DELETE, - (struct sockaddr *) &olddst, - (struct sockaddr *) &oldgw, - (struct sockaddr *) NULL, - (RTF_UP | RTF_HOST | RTF_STATIC), NULL); - if (error) { - printf("nfs_boot: del broadcast route, error=%d\n", error); - } -#endif - /* * Do enough of ifconfig(8) so that the chosen interface * can talk to the servers. (just set the address) @@ -608,21 +599,6 @@ bootpc_adjust_interface(struct ifreq *ireq,struct socket *so, return error; } -#if 0 - /* Remove default gateway arp entry. This is a kludge, but - somehow the arp entry is added without an arp request - being sent, causing outgoing packets to be dropped onto the floor */ - - error = rtrequest(RTM_DELETE, - (struct sockaddr *) gw, - (struct sockaddr *) NULL, - (struct sockaddr *) NULL, - (RTF_UP | RTF_HOST | RTF_STATIC), NULL); - if (error) { - printf("nfs_boot: del default gateway linklevel route, error=%d\n", error); - } -#endif - return 0; } @@ -714,6 +690,51 @@ static void mountopts(args,p) args->sotype = SOCK_STREAM; } +static int xdr_opaque_decode(mptr,buf,len) + struct mbuf **mptr; + u_char *buf; + int len; +{ + struct mbuf *m; + int alignedlen; + + m = *mptr; + alignedlen = ( len + 3 ) & ~3; + + if (m->m_len < alignedlen) { + m = m_pullup(m,alignedlen); + if (m == NULL) { + *mptr = NULL; + return EBADRPC; + } + } + bcopy(mtod(m,u_char *),buf,len); + m_adj(m,alignedlen); + *mptr = m; + return 0; +} + +static int xdr_int_decode(mptr,iptr) + struct mbuf **mptr; + int *iptr; +{ + u_int32_t i; + if (xdr_opaque_decode(mptr,(u_char *) &i,sizeof(u_int32_t))) + return EBADRPC; + *iptr = fxdr_unsigned(u_int32_t,i); + return 0; +} + +static void printip(char *prefix,struct in_addr addr) +{ + unsigned int ip; + + ip = ntohl(addr.s_addr); + + printf("%s is %d.%d.%d.%d\n",prefix, + ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); +} + void bootpc_init(void) { @@ -796,7 +817,7 @@ bootpc_init(void) if (sdl->sdl_alen != EALEN ) panic("bootpc: HW address len is %d, expected value is %d", sdl->sdl_alen,EALEN); -#if 1 + printf("bootpc hw address is "); delim=""; for (j=0;j<sdl->sdl_alen;j++) { @@ -804,7 +825,6 @@ bootpc_init(void) delim=":"; } printf("\n"); -#endif #if 0 bootpboot_p_iflist(); @@ -871,21 +891,15 @@ bootpc_init(void) myaddr.sin_addr = reply.yiaddr; ip = ntohl(myaddr.sin_addr.s_addr); - printf("My ip address is %d.%d.%d.%d\n", - ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); - sprintf(lookup_path,"swap.%d.%d.%d.%d", ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); - ip = ntohl(reply.siaddr.s_addr); - printf("Server ip address is %d.%d.%d.%d\n", - ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); + printip("My ip address",myaddr.sin_addr); - ip = ntohl(reply.giaddr.s_addr); - printf("Gateway ip address is %d.%d.%d.%d\n", - ip >> 24, (ip >> 16) & 255 ,(ip >> 8) & 255 ,ip & 255 ); + printip("Server ip address",reply.siaddr); gw.sin_addr = reply.giaddr; + printip("Gateway ip address",reply.giaddr); if (reply.sname[0]) printf("Server name is %s\n",reply.sname); @@ -918,12 +932,10 @@ bootpc_init(void) panic("bootpc: subnet mask len is %d",len); bcopy(&reply.vend[j],&netmask.sin_addr,4); gotnetmask=1; - printf("Subnet mask is %d.%d.%d.%d\n", - reply.vend[j], - reply.vend[j+1], - reply.vend[j+2], - reply.vend[j+3]); + printip("Subnet mask",netmask.sin_addr); break; + case 6: /* Domain Name servers. Unused */ + case 16: /* Swap server IP address. unused */ case 2: /* Time offset */ break; @@ -933,19 +945,9 @@ bootpc_init(void) panic("bootpc: Router Len is %d",len); if (len > 0) { bcopy(&reply.vend[j],&gw.sin_addr,4); + printip("Router",gw.sin_addr); gotgw=1; } - for (i=0;i<len;i+=4) { - printf("Router is %d.%d.%d.%d\n", - reply.vend[j+i], - reply.vend[j+i+1], - reply.vend[j+i+2], - reply.vend[j+i+3]); - } - break; - case 6:/* Domain Name servers. Unused */ - break; - case 16: /* Swap server IP address. unused */ break; case 17: if (setfs(&nd->root_saddr, nd->root_hostnam, p)) { @@ -1001,12 +1003,12 @@ bootpc_init(void) #endif if (!gotnetmask) { - if (IN_CLASSA(myaddr.sin_addr.s_addr)) - netmask.sin_addr.s_addr = IN_CLASSA_NET; - else if (IN_CLASSB(myaddr.sin_addr.s_addr)) - netmask.sin_addr.s_addr = IN_CLASSB_NET; + if (IN_CLASSA(ntohl(myaddr.sin_addr.s_addr))) + netmask.sin_addr.s_addr = htonl(IN_CLASSA_NET); + else if (IN_CLASSB(ntohl(myaddr.sin_addr.s_addr))) + netmask.sin_addr.s_addr = htonl(IN_CLASSB_NET); else - netmask.sin_addr.s_addr = IN_CLASSC_NET; + netmask.sin_addr.s_addr = htonl(IN_CLASSC_NET); } if (!gotgw) { /* Use proxyarp */ @@ -1120,59 +1122,31 @@ md_mount(mdsin, path, fhp, fhsizep, args, procp) } #endif - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - error = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); - if (error) + if (xdr_int_decode(&m,&error) || error) goto bad; - m_adj(m,sizeof(u_int32_t)); if (args->flags & NFSMNT_NFSV3) { - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - *fhsizep = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); - if (*fhsizep > NFSX_V3FHMAX || *fhsizep <= 0 ) + if (xdr_int_decode(&m,fhsizep) || + *fhsizep > NFSX_V3FHMAX || *fhsizep <= 0 ) goto bad; - m_adj(m,sizeof(u_int32_t)); } else *fhsizep = NFSX_V2FH; - if (m->m_len < (((*fhsizep)+3)&~3)) { - m = m_pullup(m,(((*fhsizep)+3)&~3)); - if (m == NULL) - goto bad; - } - bcopy(mtod(m,u_char *), fhp, *fhsizep); - m_adj(m,(((*fhsizep)+3)&~3)); + if (xdr_opaque_decode(&m,fhp,*fhsizep)) + goto bad; if (args->flags & NFSMNT_NFSV3) { - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - authcount = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); + if (xdr_int_decode(&m,&authcount)) + goto bad; authunixok = 0; - m_adj(m,sizeof(u_int32_t)); if (authcount<0 || authcount>100) goto bad; while (authcount>0) { - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - authver = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); + if (xdr_int_decode(&m,&authver)) + goto bad; if (authver == RPCAUTH_UNIX) authunixok = 1; authcount--; - m_adj(m,sizeof(u_int32_t)); } if (!authunixok) goto bad; @@ -1193,6 +1167,7 @@ out: return error; } + static int md_lookup_swap(mdsin, path, fhp, fhsizep, args, procp) struct sockaddr_in *mdsin; /* mountd server address */ char *path; @@ -1206,6 +1181,10 @@ static int md_lookup_swap(mdsin, path, fhp, fhsizep, args, procp) int size = -1; int attribs_present; int status; + union { + u_int32_t v2[17]; + u_int32_t v3[21]; + } fattribs; m = m_get(M_WAIT,MT_DATA); if (!m) @@ -1236,62 +1215,37 @@ static int md_lookup_swap(mdsin, path, fhp, fhsizep, args, procp) if (error) return error; /* message already freed */ - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - status = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); - m_adj(m,sizeof(u_int32_t)); + if (xdr_int_decode(&m,&status)) + goto bad; if (status) { error = ENOENT; goto out; } if (args->flags & NFSMNT_NFSV3) { - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - *fhsizep = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); - if (*fhsizep > NFSX_V3FHMAX || *fhsizep <= 0 ) + if (xdr_int_decode(&m,fhsizep) || + *fhsizep > NFSX_V3FHMAX || *fhsizep <= 0 ) goto bad; - m_adj(m,sizeof(u_int32_t)); } else *fhsizep = NFSX_V2FH; - if (m->m_len < (((*fhsizep)+3)&~3)) { - m = m_pullup(m,(((*fhsizep)+3)&~3)); - if (m == NULL) - goto bad; - } - bcopy(mtod(m,u_char *), fhp, *fhsizep); - m_adj(m,(((*fhsizep)+3)&~3)); + if (xdr_opaque_decode(&m, fhp, *fhsizep)) + goto bad; if (args->flags & NFSMNT_NFSV3) { - if (m->m_len < sizeof(u_int32_t)) { - m = m_pullup(m, sizeof(u_int32_t)); - if (m == NULL) - goto bad; - } - attribs_present = fxdr_unsigned(u_int32_t, *mtod(m,u_int32_t *)); - m_adj(m,sizeof(u_int32_t)); + if (xdr_int_decode(&m,&attribs_present)) + goto bad; if (attribs_present) { - if (m->m_len < sizeof(u_int32_t)*21) { - m = m_pullup(m, sizeof(u_int32_t)*21); - if (m == NULL) - goto bad; - } - size = fxdr_unsigned(u_int32_t, mtod(m,u_int32_t *)[6]); - } - } else { - if (m->m_len < sizeof(u_int32_t)*17) { - m = m_pullup(m, sizeof(u_int32_t)*17); - if (m == NULL) + if (xdr_opaque_decode(&m,(u_char *) &fattribs.v3, + sizeof(u_int32_t)*21)) goto bad; + size = fxdr_unsigned(u_int32_t, fattribs.v3[6]); } - size = fxdr_unsigned(u_int32_t, mtod(m,u_int32_t *)[5]); + } else { + if (xdr_opaque_decode(&m,(u_char *) &fattribs.v2, + sizeof(u_int32_t)*17)) + goto bad; + size = fxdr_unsigned(u_int32_t, fattribs.v2[5]); } if (!nfsv3_diskless.swap_nblks && size!= -1) { |