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recvmsg: fix return of ctrl length and flags

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Matheus
2024-09-19 17:24:34 -03:00
parent 87ef9ba76b
commit 9015014804
1 changed files with 9 additions and 3 deletions
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kernel-src/sys/syscalls/recvmsg.c
+9 -3
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@@ -70,9 +70,6 @@ syscallret_t syscall_recvmsg(context_t *, int fd, msghdr_t *umsghdr, int flags)
if (ret.errno)
goto cleanup;
msghdr.ctrllen = desc.ctrldone;
msghdr.flags = (desc.flags & SOCKET_RECV_FLAGS_CTRLTRUNCATED) ? MSG_CTRUNC : 0;
uintmax_t iovoffset = 0;
for (int i = 0; i < msghdr.iovcount; ++i) {
ret.errno = usercopy_touser(msghdr.iov[i].addr, (void *)((uintptr_t)buffer + iovoffset), msghdr.iov[i].len);
@@ -103,11 +100,20 @@ syscallret_t syscall_recvmsg(context_t *, int fd, msghdr_t *umsghdr, int flags)
if (ret.errno)
goto cleanup;
ret.errno = usercopy_touser(&umsghdr->ctrllen, &desc.ctrldone, sizeof(desc.ctrldone));
if (ret.errno)
goto cleanup;
ret.errno = usercopy_touser(ptr, msghdr.msgctrl, desc.ctrldone);
if (ret.errno)
goto cleanup;
}
if (ret.errno == 0) {
int return_flags = (desc.flags & SOCKET_RECV_FLAGS_CTRLTRUNCATED) ? MSG_CTRUNC : 0;
ret.errno = usercopy_touser(&umsghdr->flags, &return_flags, sizeof(return_flags));
}
ret.ret = ret.errno ? -1 : desc.donecount;
cleanup: