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Code Issues Releases Activity

Use shared vnode locks for auditing vnode arguments as auditing only

Browse Source 
does a VOP_GETATTR() which does not require an exclusive lock.

Reviewed by:	csjp, rwatson
This commit is contained in:
John Baldwin 2008-11-04 22:31:04 +00:00
parent 16da60664d
commit 927edcc9ba
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=184661
2 changed files with 6 additions and 6 deletions
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8
sys/kern/vfs_syscalls.c
View File

@ -2734,7 +2734,7 @@ fchflags(td, uap)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
#ifdef AUDIT
vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY);
vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY);
AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
VOP_UNLOCK(fp->f_vnode, 0);
#endif
@ -2896,7 +2896,7 @@ fchmod(td, uap)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
#ifdef AUDIT
vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY);
vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY);
AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
VOP_UNLOCK(fp->f_vnode, 0);
#endif
@ -3074,7 +3074,7 @@ fchown(td, uap)
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
#ifdef AUDIT
vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY);
vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY);
AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
VOP_UNLOCK(fp->f_vnode, 0);
#endif
@ -3311,7 +3311,7 @@ kern_futimes(struct thread *td, int fd, struct timeval *tptr,
return (error);
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
#ifdef AUDIT
vn_lock(fp->f_vnode, LK_EXCLUSIVE | LK_RETRY);
vn_lock(fp->f_vnode, LK_SHARED | LK_RETRY);
AUDIT_ARG(vnode, fp->f_vnode, ARG_VNODE1);
VOP_UNLOCK(fp->f_vnode, 0);
#endif

4
sys/security/audit/audit_arg.c
View File

@ -631,7 +631,7 @@ audit_arg_file(struct proc *p, struct file *fp)
*/
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
vn_lock(vp, LK_SHARED | LK_RETRY);
audit_arg_vnode(vp, ARG_VNODE1);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);
@ -849,7 +849,7 @@ audit_sysclose(struct thread *td, int fd)
vp = fp->f_vnode;
vfslocked = VFS_LOCK_GIANT(vp->v_mount);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
vn_lock(vp, LK_SHARED | LK_RETRY);
audit_arg_vnode(vp, ARG_VNODE1);
VOP_UNLOCK(vp, 0);
VFS_UNLOCK_GIANT(vfslocked);