vasilito/RedBear-OS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix(tests/ptrace.c): persistent logs

Browse Source 
Even though it might seem like it, it is not necessary that write(2) is
the only system call performed. It could be that the libc has to
allocate memory (via MMAP) or makes use of a futex. To produce
consistant results, only log on SYS_write and when the syscall number
has been patched.

Signed-off-by: Anhad Singh <andypython@protonmail.com>
This commit is contained in:
Anhad Singh
2024-12-31 00:44:38 +11:00
parent cfe89f828a
commit 2c307616d8
1 changed files with 9 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tests/ptrace.c
+9 -7
View File
@@ -48,17 +48,18 @@ int main() {
int status;
while (true) {
puts("----- Pre-syscall -----");
// puts("----- Pre-syscall -----");
result = ptrace(PTRACE_SYSCALL, pid, NULL, NULL);
ERROR_IF(ptrace, result, == -1);
UNEXP_IF(ptrace, result, != 0);
puts("Wait...");
// puts("Wait...");
result = waitpid(pid, &status, 0);
ERROR_IF(waitpid, result, == -1);
if (WIFEXITED(status)) { break; }
if (WIFEXITED(status))
break;
struct user_regs_struct regs;
puts("Get regs");
// puts("Get regs");
result = ptrace(PTRACE_GETREGS, pid, NULL, &regs);
ERROR_IF(ptrace, result, == -1);
@@ -69,14 +70,15 @@ int main() {
ERROR_IF(ptrace, result, == -1);
}
puts("Post-syscall");
// puts("Post-syscall");
result = ptrace(PTRACE_SYSCALL, pid, NULL, NULL);
ERROR_IF(ptrace, result, == -1);
UNEXP_IF(ptrace, result, != 0);
puts("Wait...");
// puts("Wait...");
result = waitpid(pid, &status, 0);
ERROR_IF(waitpid, result, == -1);
if (WIFEXITED(status)) { break; }
if (WIFEXITED(status))
break;
}
printf("Child exited with status %d\n", WEXITSTATUS(status));
}