diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2004-05-20 09:20:43 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2004-05-20 09:20:43 +0000 |
| commit | fa548ed2239322fed4b99e17ca368c836285328c (patch) | |
| tree | 55aab0ddc31aa2e7f0a93ce13b8a59cf28fccc84 /sys/miscfs | |
| parent | bb1fe1b9b98659e5bb936357bf26eda5391543bf (diff) | |
Properly flush instruction cache for ptrace(PT_WRTIE_{DI}, ...) on powerpc
and m68k.
ok drahn@, millert@
Diffstat (limited to 'sys/miscfs')
| -rw-r--r-- | sys/miscfs/procfs/procfs_mem.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/sys/miscfs/procfs/procfs_mem.c b/sys/miscfs/procfs/procfs_mem.c index 0e6cd9bede8..95d617083ea 100644 --- a/sys/miscfs/procfs/procfs_mem.c +++ b/sys/miscfs/procfs/procfs_mem.c @@ -1,4 +1,4 @@ -/* $OpenBSD: procfs_mem.c,v 1.21 2004/05/05 23:52:10 tedu Exp $ */ +/* $OpenBSD: procfs_mem.c,v 1.22 2004/05/20 09:20:41 kettenis Exp $ */ /* $NetBSD: procfs_mem.c,v 1.8 1996/02/09 22:40:50 christos Exp $ */ /* @@ -66,19 +66,27 @@ procfs_domem(curp, p, pfs, uio) struct uio *uio; { int error; + vaddr_t addr; + vsize_t len; - if (uio->uio_resid == 0) + len = uio->uio_resid; + if (len == 0) return (0); if ((error = procfs_checkioperm(curp, p)) != 0) return (error); + /* XXXCDC: how should locking work here? */ if ((p->p_flag & P_WEXIT) || (p->p_vmspace->vm_refcnt < 1)) return(EFAULT); + addr = uio->uio_offset; p->p_vmspace->vm_refcnt++; /* XXX */ error = uvm_io(&p->p_vmspace->vm_map, uio); uvmspace_free(p->p_vmspace); + if (error == 0 && uio->uio_rw == UIO_WRITE) + pmap_proc_iflush(p, addr, len); + return error; } |