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-rw-r--r--erts/emulator/drivers/common/inet_drv.c131
1 files changed, 87 insertions, 44 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 3478ba7081..7f20477363 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -634,11 +634,10 @@ static size_t my_strnlen(const char *s, size_t maxlen)
* the pointer difference from the cmsg start pointer
* to the CMSG_DATA(cmsg) pointer.
*/
-#define LEN_CMSG_DATA(cmsg) ((char*)CMSG_DATA(cmsg) - (char*)(cmsg))
+#define LEN_CMSG_DATA(cmsg) \
+ ((cmsg)->cmsg_len - ((char*)CMSG_DATA(cmsg) - (char*)(cmsg)))
#define NXT_CMSG_HDR(cmsg) \
- ((struct cmsghdr*) \
- (((char*)(cmsg)) + \
- CMSG_SPACE((cmsg)->cmsg_len - LEN_CMSG_DATA(cmsg))))
+ ((struct cmsghdr*)(((char*)(cmsg)) + CMSG_SPACE(LEN_CMSG_DATA(cmsg))))
#endif
#if !defined(IPV6_PKTOPTIONS) && defined(IPV6_2292PKTOPTIONS)
@@ -2796,39 +2795,61 @@ static int inet_async_data(inet_descriptor* desc, const char* buf, int len)
}
#ifndef __WIN32__
+static int load_cmsg_int(ErlDrvTermData *spec, int i,
+ struct cmsghdr *cmsg) {
+ union u {
+ byte uint8;
+ Uint16 uint16;
+ Uint32 uint32;
+ Uint64 uint64;
+ } *p;
+ p = (union u*) CMSG_DATA(cmsg);
+ switch (LEN_CMSG_DATA(cmsg) * CHAR_BIT) {
+ case 8:
+ return LOAD_INT(spec, i, p->uint8);
+ case 16:
+ return LOAD_INT(spec, i, p->uint16);
+
+ case 32:
+ return LOAD_INT(spec, i, p->uint32);
+
+ case 64:
+ return LOAD_INT(spec, i, p->uint64);
+ }
+ return LOAD_INT(spec, i, 0);
+}
+
static int parse_ancillary_data_item(ErlDrvTermData *spec, int i,
struct cmsghdr *cmsg, int *n) {
-#define LOAD_CMSG(proto, type, vtype, am, load) \
- if (cmsg->cmsg_level == (proto) && \
- cmsg->cmsg_type == (type)) { \
- vtype *vp; \
- vp = (vtype *)CMSG_DATA(cmsg); \
- i = LOAD_ATOM(spec, i, (am)); \
- i = load(spec, i, *vp); \
- i = LOAD_TUPLE(spec, i, 2); \
- (*n)++; \
- return i; \
+#define LOAD_CMSG_INT(proto, type, am) \
+ if (cmsg->cmsg_level == (proto) && \
+ cmsg->cmsg_type == (type)) { \
+ i = LOAD_ATOM(spec, i, (am)); \
+ i = load_cmsg_int(spec, i, cmsg); \
+ i = LOAD_TUPLE(spec, i, 2); \
+ (*n)++; \
+ return i; \
}
#if defined(IPPROTO_IP) && defined(IP_TOS)
- LOAD_CMSG(IPPROTO_IP, IP_TOS, unsigned char, am_tos, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IP, IP_TOS, am_tos);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
- LOAD_CMSG(IPPROTO_IPV6, IPV6_TCLASS, unsigned char, am_tclass, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IPV6, IPV6_TCLASS, am_tclass);
#endif
#if defined(IPPROTO_IP) && defined(IP_TTL)
- LOAD_CMSG(IPPROTO_IP, IP_TTL, unsigned char, am_ttl, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IP, IP_TTL, am_ttl);
#endif
/* BSD uses the RECV* names in CMSG fields */
#if defined(IPPROTO_IP) && defined(IP_RECVTOS)
- LOAD_CMSG(IPPROTO_IP, IP_RECVTOS, unsigned char, am_tos, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IP, IP_RECVTOS, am_tos);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_RECVTCLASS)
- LOAD_CMSG(IPPROTO_IPV6, IPV6_RECVTCLASS, unsigned char, am_tclass, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IPV6, IPV6_RECVTCLASS, am_tclass);
#endif
#if defined(IPPROTO_IP) && defined(IP_RECVTTL)
- LOAD_CMSG(IPPROTO_IP, IP_RECVTTL, unsigned char, am_ttl, LOAD_INT);
+ LOAD_CMSG_INT(IPPROTO_IP, IP_RECVTTL, am_ttl);
#endif
-#undef LOAD_CMSG
+#undef LOAD_CMSG_INT
return i;
}
#endif /* #ifndef __WIN32__ */
@@ -7330,6 +7351,35 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
}
#endif /* HAVE_SCTP */
+#ifndef __WIN32__
+static void put_cmsg_int32(struct cmsghdr *cmsg, char *ptr) {
+ union u {
+ byte uint8;
+ Uint16 uint16;
+ Uint32 uint32;
+ Uint64 uint64;
+ } *p;
+ p = (union u*) CMSG_DATA(cmsg);
+ switch (LEN_CMSG_DATA(cmsg) * CHAR_BIT) {
+ case 8:
+ put_int32((Uint32) p->uint8, ptr);
+ break;
+ case 16:
+ put_int32((Uint32) p->uint16, ptr);
+ break;
+ case 32:
+ put_int32(p->uint32, ptr);
+ break;
+ case 64:
+ put_int32((Uint32) p->uint64, ptr);
+ break;
+ default:
+ put_int32(0, ptr);
+ }
+ return;
+}
+#endif
+
/* load all option values into the buf and reply
** return total length of reply filled into ptr
** ptr should point to a buffer with 9*len +1 to be safe!!
@@ -7796,44 +7846,37 @@ static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
cmsg = (struct cmsghdr*)cmsgbuf.buf;
cmsg < cmsg_top;
cmsg = NXT_CMSG_HDR(cmsg)) {
-#define PUT_CMSG_DATA(CMSG_LEVEL, CMSG_TYPE, OPT, TYPE, SZ, PUT) \
- if ((cmsg->cmsg_level == CMSG_LEVEL) && \
- (cmsg->cmsg_type == CMSG_TYPE)) { \
- TYPE *cmsgp; \
- cmsgp = (TYPE *)CMSG_DATA(cmsg); \
- PLACE_FOR(1+SZ, ptr); \
- *ptr = OPT; \
- PUT(*cmsgp, ptr+1); \
- arg_sz += 1+SZ; \
- continue; \
+#define PUT_CMSG_INT32(CMSG_LEVEL, CMSG_TYPE, OPT) \
+ if ((cmsg->cmsg_level == CMSG_LEVEL) && \
+ (cmsg->cmsg_type == CMSG_TYPE)) { \
+ PLACE_FOR(1+4, ptr); \
+ *ptr++ = OPT; \
+ put_cmsg_int32(cmsg, ptr); \
+ ptr += 4; \
+ arg_sz += 1+4; \
+ continue; \
}
#if defined(IPPROTO_IP) && defined(IP_TOS)
- PUT_CMSG_DATA(IPPROTO_IP, IP_TOS,
- INET_OPT_TOS, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IP, IP_TOS, INET_OPT_TOS);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
- PUT_CMSG_DATA(IPPROTO_IPV6, IPV6_TCLASS,
- INET_OPT_TCLASS, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IPV6, IPV6_TCLASS, INET_OPT_TCLASS);
#endif
#if defined(IPPROTO_IP) && defined(IP_TTL)
- PUT_CMSG_DATA(IPPROTO_IP, IP_TTL,
- INET_OPT_TTL, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IP, IP_TTL, INET_OPT_TTL);
#endif
/* BSD uses the RECV* names in CMSG fields */
}
#if defined(IPPROTO_IP) && defined(IP_RECVTOS)
- PUT_CMSG_DATA(IPPROTO_IP, IP_RECVTOS,
- INET_OPT_TOS, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IP, IP_RECVTOS, INET_OPT_TOS);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_RECVTCLASS)
- PUT_CMSG_DATA(IPPROTO_IPV6, IPV6_RECVTCLASS,
- INET_OPT_TCLASS, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IPV6, IPV6_RECVTCLASS, INET_OPT_TCLASS);
#endif
#if defined(IPPROTO_IP) && defined(IP_RECVTTL)
- PUT_CMSG_DATA(IPPROTO_IP, IP_RECVTTL,
- INET_OPT_TTL, unsigned char, 4, put_int32);
+ PUT_CMSG_INT32(IPPROTO_IP, IP_RECVTTL, INET_OPT_TTL);
#endif
-#undef PUT_CMSG_DATA
+#undef PUT_CMSG_INT32
put_int32(arg_sz, arg_ptr); /* Put total length */
continue;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 02:58:07 +0000