| Line | |
|---|
| 1 | #include <lib.h>
|
|---|
| 2 | #define ptrace _ptrace
|
|---|
| 3 | #include <unistd.h>
|
|---|
| 4 |
|
|---|
| 5 | PUBLIC long ptrace(req, pid, addr, data)
|
|---|
| 6 | int req;
|
|---|
| 7 | pid_t pid;
|
|---|
| 8 | long addr;
|
|---|
| 9 | long data;
|
|---|
| 10 | {
|
|---|
| 11 | message m;
|
|---|
| 12 |
|
|---|
| 13 | m.m2_i1 = pid;
|
|---|
| 14 | m.m2_i2 = req;
|
|---|
| 15 | m.m2_l1 = addr;
|
|---|
| 16 | m.m2_l2 = data;
|
|---|
| 17 | if (_syscall(MM, PTRACE, &m) < 0) return(-1);
|
|---|
| 18 |
|
|---|
| 19 | /* There was no error, but -1 is a legal return value. Clear errno if
|
|---|
| 20 | * necessary to distinguish this case. _syscall has set errno to nonzero
|
|---|
| 21 | * for the error case.
|
|---|
| 22 | */
|
|---|
| 23 | if (m.m2_l2 == -1) errno = 0;
|
|---|
| 24 | return(m.m2_l2);
|
|---|
| 25 | }
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
