SYSTRACE(9) BSD Kernel Manual SYSTRACE(9)
systrace_redirect, systrace_fork, systrace_exit - enforce policies for system calls
#include <dev/systrace.h> int systrace_redirect(int code, struct proc *p, void *args, register_t *retval); void systrace_fork(struct proc *oldproc, struct proc *p); void systrace_exit(struct proc *p);
These functions are used to enforce policy on the system calls as described in systrace(1). systrace_redirect() should be used to perform a system call number code with arguments args for the process p. The result is then put into the retval pointer. A typical code sequence would be: #include "systrace.h" ... #if NSYSTRACE > 0 if (ISSET(p->p_flag, P_SYSTRACE)) error = systrace_redirect(code, p, args, rval); else #endif error = (*callp->sy_call)(p, args, rval); systrace_fork() is called from the fork1(9) function to inherit policy for the child process. systrace_exit() is called during the death cycle of the process to detach the policy from the exiting process.
A subsystem for enforcing system call policies is implemented in sys/dev/systrace.c.
systrace(1), systrace(4), syscall(9)
The systrace_redirect section manual page appeared in OpenBSD 3.4. MirOS BSD #10-current July 21, 2003 1
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