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sim-se: add socket ioctls

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The OpenMPI 1.8.2 runtime needs the ioctl code
included in this patch to issue socket operations
on the host machine.

Change-Id: I687b31f375a846f0bab2debd9b9472605a4d2c7d
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/12123
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
This commit is contained in:
Brandon Potter
2018-04-18 16:57:46 -04:00
committed by Brandon Potter
parent ca3dd50878
commit 081da0f518
1 changed files with 57 additions and 10 deletions
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67
src/sim/syscall_emul.hh
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@@ -78,14 +78,19 @@
#endif
#include <fcntl.h>
#include <net/if.h>
#include <poll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/socket.h>
#include <sys/stat.h>
#if (NO_STATFS == 0)
#include <sys/statfs.h>
#else
#include <sys/mount.h>
#endif
#include <sys/time.h>
#include <sys/types.h>
@@ -755,17 +760,59 @@ ioctlFunc(SyscallDesc *desc, int callnum, Process *p, ThreadContext *tc)
return -ENOTTY;
auto dfdp = std::dynamic_pointer_cast<DeviceFDEntry>((*p->fds)[tgt_fd]);
if (!dfdp)
return -EBADF;
if (dfdp) {
EmulatedDriver *emul_driver = dfdp->getDriver();
if (emul_driver)
return emul_driver->ioctl(p, tc, req);
}
/**
* If the driver is valid, issue the ioctl through it. Otherwise,
* there's an implicit assumption that the device is a TTY type and we
* return that we do not have a valid TTY.
*/
EmulatedDriver *emul_driver = dfdp->getDriver();
if (emul_driver)
return emul_driver->ioctl(p, tc, req);
auto sfdp = std::dynamic_pointer_cast<SocketFDEntry>((*p->fds)[tgt_fd]);
if (sfdp) {
int status;
switch (req) {
case SIOCGIFCONF: {
Addr conf_addr = p->getSyscallArg(tc, index);
BufferArg conf_arg(conf_addr, sizeof(ifconf));
conf_arg.copyIn(tc->getMemProxy());
ifconf *conf = (ifconf*)conf_arg.bufferPtr();
Addr ifc_buf_addr = (Addr)conf->ifc_buf;
BufferArg ifc_buf_arg(ifc_buf_addr, conf->ifc_len);
ifc_buf_arg.copyIn(tc->getMemProxy());
conf->ifc_buf = (char*)ifc_buf_arg.bufferPtr();
status = ioctl(sfdp->getSimFD(), req, conf_arg.bufferPtr());
if (status != -1) {
conf->ifc_buf = (char*)ifc_buf_addr;
ifc_buf_arg.copyOut(tc->getMemProxy());
conf_arg.copyOut(tc->getMemProxy());
}
return status;
}
case SIOCGIFFLAGS:
#ifdef __linux__
case SIOCGIFINDEX:
#endif
case SIOCGIFNETMASK:
case SIOCGIFADDR:
#ifdef __linux__
case SIOCGIFHWADDR:
#endif
case SIOCGIFMTU: {
Addr req_addr = p->getSyscallArg(tc, index);
BufferArg req_arg(req_addr, sizeof(ifreq));
req_arg.copyIn(tc->getMemProxy());
status = ioctl(sfdp->getSimFD(), req, req_arg.bufferPtr());
if (status != -1)
req_arg.copyOut(tc->getMemProxy());
return status;
}
}
}
/**
* For lack of a better return code, return ENOTTY. Ideally, we should