Dissociate ptrace from procfs.

Until now, the ptrace syscall was implemented as a wrapper that called
various functions in procfs depending on which ptrace operation was
requested.  Most of these functions were themselves wrappers around
procfs_{read,write}_{,db,fp}regs(), with only some extra error checks,
which weren't necessary in the ptrace case anyway.

This commit moves procfs_rwmem() from procfs_mem.c into sys_process.c
(renaming it to proc_rwmem() in the process), and implements ptrace()
directly in terms of procfs_{read,write}_{,db,fp}regs() instead of
having it fake up a struct uio and then call procfs_do{,db,fp}regs().

It also moves the prototypes for procfs_{read,write}_{,db,fp}regs()
and proc_rwmem() from proc.h to ptrace.h, and marks all procfs files
except procfs_machdep.c as "optional procfs" instead of "standard".

1 files changed, 0 insertions, 9 deletions

diff --git a/sys/fs/procfs/procfs.h b/sys/fs/procfs/procfs.h
index d97f825..67af4be 100644
--- a/sys/fs/procfs/procfs.h
+++ b/sys/fs/procfs/procfs.h
@@ -118,15 +118,6 @@ struct dbreg;
 void procfs_exit __P((struct proc *));
 int procfs_freevp __P((struct vnode *));
 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype));
-struct vnode *procfs_findtextvp __P((struct proc *));
-int procfs_sstep __P((struct thread *));
-void procfs_fix_sstep __P((struct thread *));
-int procfs_read_regs __P((struct thread *, struct reg *));
-int procfs_write_regs __P((struct thread *, struct reg *));
-int procfs_read_fpregs __P((struct thread *, struct fpreg *));
-int procfs_write_fpregs __P((struct thread *, struct fpreg *));
-int procfs_read_dbregs __P((struct thread *, struct dbreg *));
-int procfs_write_dbregs __P((struct thread *, struct dbreg *));
 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));
 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio));