diff options
Diffstat (limited to 'sys/kern/kern_fork.c')
| -rw-r--r-- | sys/kern/kern_fork.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/sys/kern/kern_fork.c b/sys/kern/kern_fork.c index 04e635a..9d3e22d 100644 --- a/sys/kern/kern_fork.c +++ b/sys/kern/kern_fork.c @@ -476,7 +476,10 @@ do_fork(struct thread *td, int flags, struct proc *p2, struct thread *td2, sigacts_copy(newsigacts, p1->p_sigacts); p2->p_sigacts = newsigacts; } - if (flags & RFLINUXTHPN) + + if (flags & RFTSIGZMB) + p2->p_sigparent = RFTSIGNUM(flags); + else if (flags & RFLINUXTHPN) p2->p_sigparent = SIGUSR1; else p2->p_sigparent = SIGCHLD; @@ -719,10 +722,22 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp) static int curfail; static struct timeval lastfail; + /* Check for the undefined or unimplemented flags. */ + if ((flags & ~(RFFLAGS | RFTSIGFLAGS(RFTSIGMASK))) != 0) + return (EINVAL); + + /* Signal value requires RFTSIGZMB. */ + if ((flags & RFTSIGFLAGS(RFTSIGMASK)) != 0 && (flags & RFTSIGZMB) == 0) + return (EINVAL); + /* Can't copy and clear. */ if ((flags & (RFFDG|RFCFDG)) == (RFFDG|RFCFDG)) return (EINVAL); + /* Check the validity of the signal number. */ + if ((flags & RFTSIGZMB) != 0 && (u_int)RFTSIGNUM(flags) > _SIG_MAXSIG) + return (EINVAL); + p1 = td->td_proc; /* @@ -734,11 +749,13 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp) return (fork_norfproc(td, flags)); } +#ifdef RACCT PROC_LOCK(p1); error = racct_add(p1, RACCT_NPROC, 1); PROC_UNLOCK(p1); if (error != 0) return (EAGAIN); +#endif mem_charged = 0; vm2 = NULL; @@ -822,6 +839,7 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp) goto fail; } +#ifdef RACCT /* * After fork, there is exactly one thread running. */ @@ -832,6 +850,7 @@ fork1(struct thread *td, int flags, int pages, struct proc **procp) error = EAGAIN; goto fail; } +#endif /* * Increment the count of procs running with this uid. Don't allow @@ -874,9 +893,11 @@ fail1: vmspace_free(vm2); uma_zfree(proc_zone, newproc); pause("fork", hz / 2); +#ifdef RACCT PROC_LOCK(p1); racct_sub(p1, RACCT_NPROC, 1); PROC_UNLOCK(p1); +#endif return (error); } |
