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UserspaceEmulator: Implement the setuid() and setgid() syscalls

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Note that running a setuid program (e.g /bin/ping) in UE does not
actually run uid=0. You'll have to run UE itself as uid=0 if you want
to test programs that do setuid/setgid.
This commit is contained in:
Andreas Kling 2020-07-27 16:32:30 +02:00
parent 368cea4094
commit d9f933df7b
Notes: sideshowbarker 2024-07-19 04:34:03 +09:00
2 changed files with 16 additions and 0 deletions
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14
DevTools/UserspaceEmulator/Emulator.cpp
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@ -278,6 +278,10 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
return virt$getuid();
case SC_getgid:
return virt$getgid();
case SC_setuid:
return virt$setuid(arg1);
case SC_setgid:
return virt$setgid(arg2);
case SC_close:
return virt$close(arg1);
case SC_fstat:
@ -791,6 +795,16 @@ gid_t Emulator::virt$getgid()
return getgid();
}
int Emulator::virt$setuid(uid_t uid)
{
return syscall(SC_setuid, uid);
}
int Emulator::virt$setgid(gid_t gid)
{
return syscall(SC_setgid, gid);
}
u32 Emulator::virt$write(int fd, FlatPtr data, ssize_t size)
{
if (size < 0)