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2004-10-06 Roland McGrath <roland@redhat.com>

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* net.c [HAVE_SENDMSG] (printcmsghdr): New function.
	(printmsghdr): Use it.
This commit is contained in:
Roland McGrath 2004-10-06 22:11:51 +00:00
parent 4455b1da96
commit 5077082649
1 changed files with 58 additions and 1 deletions
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59
net.c
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@ -1066,6 +1066,62 @@ int addrlen;
}
#if HAVE_SENDMSG
static const struct xlat scmvals[] = {
#ifdef SCM_RIGHTS
{ SCM_RIGHTS, "SCM_RIGHTS" },
#endif
#ifdef SCM_CREDENTIALS
{ SCM_CREDENTIALS, "SCM_CREDENTIALS" },
#endif
{ 0, NULL }
};
static void
printcmsghdr(tcp, addr, len)
struct tcb *tcp;
unsigned long addr;
unsigned long len;
{
union {
char msg_control[len];
struct cmsghdr cmsg;
} u;
if (umoven(tcp, addr, len, u.msg_control) < 0) {
tprintf(", msg_control=%#lx", addr);
return;
}
tprintf(", {cmsg_len=%zu, cmsg_level=", u.cmsg.cmsg_len);
printxval(socketlayers, u.cmsg.cmsg_level, "SOL_???");
tprintf(", cmsg_type=");
if (u.cmsg.cmsg_level == SOL_SOCKET) {
printxval(scmvals, u.cmsg.cmsg_type, "SCM_???");
if (u.cmsg.cmsg_type == SCM_RIGHTS) {
int *fds = (int *) CMSG_DATA (&u.cmsg);
int first = 1;
tprintf(", {");
while ((char *) fds < (u.msg_control
+ u.cmsg.cmsg_len)) {
if (!first)
tprintf(", ");
tprintf("%d", *fds++);
first = 0;
}
tprintf("}}");
return;
}
if (u.cmsg.cmsg_type == SCM_CREDENTIALS
&& CMSG_LEN(sizeof(struct ucred)) <= u.cmsg.cmsg_len) {
struct ucred *uc = (struct ucred *) CMSG_DATA (&u.cmsg);
tprintf("{pid=%ld, uid=%ld, gid=%ld}}",
(long)uc->pid, (long)uc->uid, (long)uc->gid);
return;
}
}
tprintf(", ...}");
}
static void
printmsghdr(tcp, addr)
@ -1087,7 +1143,8 @@ long addr;
#ifdef HAVE_STRUCT_MSGHDR_MSG_CONTROL
tprintf(", msg_controllen=%lu", (unsigned long)msg.msg_controllen);
if (msg.msg_controllen)
tprintf(", msg_control=%#lx, ", (unsigned long) msg.msg_control);
printcmsghdr(tcp, (unsigned long) msg.msg_control,
msg.msg_controllen);
tprintf(", msg_flags=");
if (printflags(msg_flags, msg.msg_flags)==0)
tprintf("0");