1234567891011121314151617181920212223242526272829 | #include <sys/ptrace.h> #include <stdarg.h> #include <unistd.h> #include "syscall.h" long ptrace(int req, ...) { va_list ap; pid_t pid; void *addr, *data, *addr2 = 0; long ret, result; va_start(ap, req); pid = va_arg(ap, pid_t); addr = va_arg(ap, void *); data = va_arg(ap, void *); /* PTRACE_{READ,WRITE}{DATA,TEXT} (16...19) are specific to SPARC. */ #ifdef PTRACE_READDATA if ((unsigned)req - PTRACE_READDATA < 4) addr2 = va_arg(ap, void *); #endif va_end(ap); if (req-1U < 3) data = &result; ret = syscall(SYS_ptrace, req, pid, addr, data, addr2); if (ret < 0 || req-1U >= 3) return ret; return result; }
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