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dtrace problem with sendmsg
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adirtymindisajoyforever
Oct 20, 2012, 8:51:59 AM10/20/12
to
hi,
I try to display the content of the sendmsg buffer:
fbt:sockfs:sendmsg:entry
/execname == "msgsend"/
{
self->msghdr = arg1;
msghdrp = (struct msghdr *)copyin(self->msghdr, sizeof(struct
msghdr));
printf("msghdr namelen is %d\n",msghdrp->msg_namelen);
tracemem(msghdrp,sizeof(struct msghdr1));
the value printed for namelen is not the expected one but in fact the
value of the following
field in the msghdr structure : the address of msg_iov.
I must be missing something but don't know what.
I try to display the content of the sendmsg buffer:
fbt:sockfs:sendmsg:entry
/execname == "msgsend"/
{
self->msghdr = arg1;
msghdrp = (struct msghdr *)copyin(self->msghdr, sizeof(struct
msghdr));
printf("msghdr namelen is %d\n",msghdrp->msg_namelen);
tracemem(msghdrp,sizeof(struct msghdr1));
the value printed for namelen is not the expected one but in fact the
value of the following
field in the msghdr structure : the address of msg_iov.
I must be missing something but don't know what.
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