48f20655ac
- new call names, message field aliases, call tables; - initialize all ABI request messages to zero; - format callnr.h in the same way as com.h; - remove param.h namespace pollution in servers; - make brk(2) go to VM directly, rather than through PM; - remove obsolete WAIT and BRK calls from PM; - remove obsolete UTIME call from VFS; - clean up path copying routine in VFS; - move system calls from libminlib to libc; - correct some errno-related mistakes in libc routines; Change-Id: I2d8ec5d061cd7e0b30c51ffd77aa72ebf84e2565
30 lines
680 B
C
30 lines
680 B
C
#include <sys/cdefs.h>
|
|
#include "namespace.h"
|
|
#include <lib.h>
|
|
|
|
#include <string.h>
|
|
#include <sys/ptrace.h>
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(ptrace, _ptrace)
|
|
#endif
|
|
|
|
long ptrace(int req, pid_t pid, long addr, long data)
|
|
{
|
|
message m;
|
|
|
|
memset(&m, 0, sizeof(m));
|
|
m.PM_PTRACE_PID = pid;
|
|
m.PM_PTRACE_REQ = req;
|
|
m.PM_PTRACE_ADDR = addr;
|
|
m.PM_PTRACE_DATA = data;
|
|
if (_syscall(PM_PROC_NR, PM_PTRACE, &m) < 0) return(-1);
|
|
|
|
/* There was no error, but -1 is a legal return value. Clear errno if
|
|
* necessary to distinguish this case. _syscall has set errno to nonzero
|
|
* for the error case.
|
|
*/
|
|
if (m.PM_PTRACE_DATA == -1) errno = 0;
|
|
return(m.PM_PTRACE_DATA);
|
|
}
|