diff options
| -rw-r--r-- | src/misc/ptrace.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/misc/ptrace.c b/src/misc/ptrace.c index 1cc00167..f8540698 100644 --- a/src/misc/ptrace.c +++ b/src/misc/ptrace.c @@ -8,11 +8,18 @@ long ptrace(int req, ...) va_list ap; pid_t pid; void *addr, *data, *addr2; + long ret, result; + va_start(ap, req); pid = va_arg(ap, pid_t); addr = va_arg(ap, void *); data = va_arg(ap, void *); addr2 = va_arg(ap, void *); va_end(ap); - return syscall(SYS_ptrace, req, pid, addr, data, addr2); + + if (req<4U) data = &result; + ret = syscall(SYS_ptrace, req, pid, addr, data, addr2); + + if (ret<0 || req>=4U) return ret; + return result; } |