diff options
| author | kib <kib@FreeBSD.org> | 2012-10-22 17:50:54 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2012-10-22 17:50:54 +0000 |
| commit | 560aa751e0f5cfef868bdf3fab01cdbc5169ef82 (patch) | |
| tree | 6e9ef0a47c5e91d26227820c50c9767e84550821 /sys/kern/kern_exec.c | |
| parent | ca71b68ea40c83f641d6485e027368568f244197 (diff) | |
| download | FreeBSD-src-560aa751e0f5cfef868bdf3fab01cdbc5169ef82.zip FreeBSD-src-560aa751e0f5cfef868bdf3fab01cdbc5169ef82.tar.gz | |
Remove the support for using non-mpsafe filesystem modules.
In particular, do not lock Giant conditionally when calling into the
filesystem module, remove the VFS_LOCK_GIANT() and related
macros. Stop handling buffers belonging to non-mpsafe filesystems.
The VFS_VERSION is bumped to indicate the interface change which does
not result in the interface signatures changes.
Conducted and reviewed by: attilio
Tested by: pho
Diffstat (limited to 'sys/kern/kern_exec.c')
| -rw-r--r-- | sys/kern/kern_exec.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 22c53a5..0970562 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -341,7 +341,6 @@ do_execve(td, args, mac_p) #endif struct vnode *textvp = NULL, *binvp = NULL; int credential_changing; - int vfslocked; int textset; #ifdef MAC struct label *interpvplabel = NULL; @@ -352,7 +351,6 @@ do_execve(td, args, mac_p) #endif static const char fexecv_proc_title[] = "(fexecv)"; - vfslocked = 0; imgp = &image_params; /* @@ -412,7 +410,7 @@ do_execve(td, args, mac_p) */ if (args->fname != NULL) { NDINIT(&nd, LOOKUP, ISOPEN | LOCKLEAF | FOLLOW | SAVENAME - | MPSAFE | AUDITVNODE1, UIO_SYSSPACE, args->fname, td); + | AUDITVNODE1, UIO_SYSSPACE, args->fname, td); } SDT_PROBE(proc, kernel, , exec, args->fname, 0, 0, 0, 0 ); @@ -435,7 +433,6 @@ interpret: if (error) goto exec_fail; - vfslocked = NDHASGIANT(&nd); binvp = nd.ni_vp; imgp->vp = binvp; } else { @@ -449,7 +446,6 @@ interpret: error = fgetvp_exec(td, args->fd, CAP_FEXECVE, &binvp); if (error) goto exec_fail; - vfslocked = VFS_LOCK_GIANT(binvp->v_mount); vn_lock(binvp, LK_EXCLUSIVE | LK_RETRY); AUDIT_ARG_VNODE1(binvp); imgp->vp = binvp; @@ -538,10 +534,8 @@ interpret: vput(binvp); vm_object_deallocate(imgp->object); imgp->object = NULL; - VFS_UNLOCK_GIANT(vfslocked); - vfslocked = 0; /* set new name to that of the interpreter */ - NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW | SAVENAME | MPSAFE, + NDINIT(&nd, LOOKUP, LOCKLEAF | FOLLOW | SAVENAME, UIO_SYSSPACE, imgp->interpreter_name, td); args->fname = imgp->interpreter_name; goto interpret; @@ -844,23 +838,13 @@ done1: /* * Handle deferred decrement of ref counts. */ - if (textvp != NULL) { - int tvfslocked; - - tvfslocked = VFS_LOCK_GIANT(textvp->v_mount); + if (textvp != NULL) vrele(textvp); - VFS_UNLOCK_GIANT(tvfslocked); - } if (binvp && error != 0) vrele(binvp); #ifdef KTRACE - if (tracevp != NULL) { - int tvfslocked; - - tvfslocked = VFS_LOCK_GIANT(tracevp->v_mount); + if (tracevp != NULL) vrele(tracevp); - VFS_UNLOCK_GIANT(tvfslocked); - } if (tracecred != NULL) crfree(tracecred); #endif @@ -917,7 +901,6 @@ done2: mac_execve_exit(imgp); mac_execve_interpreter_exit(interpvplabel); #endif - VFS_UNLOCK_GIANT(vfslocked); exec_free_args(args); if (error && imgp->vmspace_destroyed) { |
