Following a repo-copy of vfs_syscalls.c to vfs_extattr.c, remove
non-extattr functions from vfs_extattr.c, and extattr functions from vfs_syscalls.c. Change copyright/license on vfs_extattr.c to my copyright/license on the extended attribute implementation (from extattr.h). Clean up includes a bit. Obtained from: TrustedBSD Project
This commit is contained in:
Robert Watson
parent
e0d5512e3a
commit
168d0553a3
File diff suppressed because it is too large
Load Diff
@ -63,7 +63,6 @@ __FBSDID("$FreeBSD$");
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#include <sys/priv.h>
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#include <sys/proc.h>
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#include <sys/dirent.h>
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#include <sys/extattr.h>
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#include <sys/jail.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysctl.h>
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@ -88,9 +87,6 @@ static int setutimes(struct thread *td, struct vnode *,
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static int vn_access(struct vnode *vp, int user_flags, struct ucred *cred,
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struct thread *td);
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static int extattr_list_vp(struct vnode *vp, int attrnamespace, void *data,
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size_t nbytes, struct thread *td);
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int (*union_dircheckp)(struct thread *td, struct vnode **, struct file *);
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/*
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@ -4353,744 +4349,3 @@ out:
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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/*
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* Syscall to push extended attribute configuration information into the
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* VFS. Accepts a path, which it converts to a mountpoint, as well as
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* a command (int cmd), and attribute name and misc data. For now, the
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* attribute name is left in userspace for consumption by the VFS_op.
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* It will probably be changed to be copied into sysspace by the
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* syscall in the future, once issues with various consumers of the
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* attribute code have raised their hands.
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*
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* Currently this is used only by UFS Extended Attributes.
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*/
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int
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extattrctl(td, uap)
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struct thread *td;
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struct extattrctl_args /* {
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const char *path;
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int cmd;
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const char *filename;
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int attrnamespace;
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const char *attrname;
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} */ *uap;
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{
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struct vnode *filename_vp;
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struct nameidata nd;
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struct mount *mp, *mp_writable;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, fnvfslocked, error;
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AUDIT_ARG(cmd, uap->cmd);
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AUDIT_ARG(value, uap->attrnamespace);
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/*
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* uap->attrname is not always defined. We check again later when we
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* invoke the VFS call so as to pass in NULL there if needed.
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*/
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if (uap->attrname != NULL) {
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN,
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NULL);
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if (error)
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return (error);
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}
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AUDIT_ARG(text, attrname);
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vfslocked = fnvfslocked = 0;
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/*
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* uap->filename is not always defined. If it is, grab a vnode lock,
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* which VFS_EXTATTRCTL() will later release.
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*/
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filename_vp = NULL;
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if (uap->filename != NULL) {
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NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | LOCKLEAF |
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AUDITVNODE2, UIO_USERSPACE, uap->filename, td);
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error = namei(&nd);
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if (error)
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return (error);
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fnvfslocked = NDHASGIANT(&nd);
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filename_vp = nd.ni_vp;
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NDFREE(&nd, NDF_NO_VP_RELE | NDF_NO_VP_UNLOCK);
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}
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/* uap->path is always defined. */
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NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
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uap->path, td);
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error = namei(&nd);
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if (error) {
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if (filename_vp != NULL)
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vput(filename_vp);
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goto out;
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}
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vfslocked = NDHASGIANT(&nd);
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mp = nd.ni_vp->v_mount;
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error = vn_start_write(nd.ni_vp, &mp_writable, V_WAIT | PCATCH);
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NDFREE(&nd, 0);
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if (error) {
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if (filename_vp != NULL)
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vput(filename_vp);
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goto out;
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}
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error = VFS_EXTATTRCTL(mp, uap->cmd, filename_vp, uap->attrnamespace,
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uap->attrname != NULL ? attrname : NULL, td);
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vn_finished_write(mp_writable);
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/*
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* VFS_EXTATTRCTL will have unlocked, but not de-ref'd,
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* filename_vp, so vrele it if it is defined.
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*/
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if (filename_vp != NULL)
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vrele(filename_vp);
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out:
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VFS_UNLOCK_GIANT(fnvfslocked);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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/*-
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* Set a named extended attribute on a file or directory
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*
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* Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
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* kernelspace string pointer "attrname", userspace buffer
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* pointer "data", buffer length "nbytes", thread "td".
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* Returns: 0 on success, an error number otherwise
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* Locks: none
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* References: vp must be a valid reference for the duration of the call
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*/
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static int
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extattr_set_vp(struct vnode *vp, int attrnamespace, const char *attrname,
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void *data, size_t nbytes, struct thread *td)
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{
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struct mount *mp;
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struct uio auio;
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struct iovec aiov;
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ssize_t cnt;
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int error;
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VFS_ASSERT_GIANT(vp->v_mount);
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error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
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if (error)
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return (error);
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VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
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aiov.iov_base = data;
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aiov.iov_len = nbytes;
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auio.uio_iov = &aiov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = 0;
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if (nbytes > INT_MAX) {
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error = EINVAL;
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goto done;
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}
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auio.uio_resid = nbytes;
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auio.uio_rw = UIO_WRITE;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_td = td;
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cnt = nbytes;
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#ifdef MAC
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error = mac_check_vnode_setextattr(td->td_ucred, vp, attrnamespace,
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attrname, &auio);
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if (error)
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goto done;
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#endif
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error = VOP_SETEXTATTR(vp, attrnamespace, attrname, &auio,
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td->td_ucred, td);
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cnt -= auio.uio_resid;
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td->td_retval[0] = cnt;
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done:
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VOP_UNLOCK(vp, 0, td);
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vn_finished_write(mp);
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return (error);
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}
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int
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extattr_set_fd(td, uap)
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struct thread *td;
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struct extattr_set_fd_args /* {
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int fd;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct file *fp;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(fd, uap->fd);
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
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if (error)
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return (error);
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vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
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error = extattr_set_vp(fp->f_vnode, uap->attrnamespace,
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attrname, uap->data, uap->nbytes, td);
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fdrop(fp, td);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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int
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extattr_set_file(td, uap)
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struct thread *td;
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struct extattr_set_file_args /* {
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const char *path;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
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uap->path, td);
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error = namei(&nd);
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if (error)
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return (error);
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NDFREE(&nd, NDF_ONLY_PNBUF);
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vfslocked = NDHASGIANT(&nd);
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error = extattr_set_vp(nd.ni_vp, uap->attrnamespace, attrname,
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uap->data, uap->nbytes, td);
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vrele(nd.ni_vp);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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int
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extattr_set_link(td, uap)
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struct thread *td;
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struct extattr_set_link_args /* {
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const char *path;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
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uap->path, td);
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error = namei(&nd);
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if (error)
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return (error);
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NDFREE(&nd, NDF_ONLY_PNBUF);
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vfslocked = NDHASGIANT(&nd);
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error = extattr_set_vp(nd.ni_vp, uap->attrnamespace, attrname,
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uap->data, uap->nbytes, td);
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vrele(nd.ni_vp);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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/*-
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* Get a named extended attribute on a file or directory
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*
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* Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
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* kernelspace string pointer "attrname", userspace buffer
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* pointer "data", buffer length "nbytes", thread "td".
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* Returns: 0 on success, an error number otherwise
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* Locks: none
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* References: vp must be a valid reference for the duration of the call
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*/
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static int
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extattr_get_vp(struct vnode *vp, int attrnamespace, const char *attrname,
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void *data, size_t nbytes, struct thread *td)
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{
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struct uio auio, *auiop;
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struct iovec aiov;
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ssize_t cnt;
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size_t size, *sizep;
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int error;
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VFS_ASSERT_GIANT(vp->v_mount);
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VOP_LEASE(vp, td, td->td_ucred, LEASE_READ);
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vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
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/*
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* Slightly unusual semantics: if the user provides a NULL data
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* pointer, they don't want to receive the data, just the
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* maximum read length.
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*/
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auiop = NULL;
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sizep = NULL;
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cnt = 0;
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if (data != NULL) {
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aiov.iov_base = data;
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aiov.iov_len = nbytes;
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auio.uio_iov = &aiov;
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auio.uio_iovcnt = 1;
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auio.uio_offset = 0;
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if (nbytes > INT_MAX) {
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error = EINVAL;
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goto done;
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}
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auio.uio_resid = nbytes;
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auio.uio_rw = UIO_READ;
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auio.uio_segflg = UIO_USERSPACE;
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auio.uio_td = td;
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auiop = &auio;
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cnt = nbytes;
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} else
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sizep = &size;
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#ifdef MAC
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error = mac_check_vnode_getextattr(td->td_ucred, vp, attrnamespace,
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attrname, &auio);
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if (error)
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goto done;
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#endif
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error = VOP_GETEXTATTR(vp, attrnamespace, attrname, auiop, sizep,
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td->td_ucred, td);
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if (auiop != NULL) {
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cnt -= auio.uio_resid;
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td->td_retval[0] = cnt;
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} else
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td->td_retval[0] = size;
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done:
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VOP_UNLOCK(vp, 0, td);
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return (error);
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}
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int
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extattr_get_fd(td, uap)
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struct thread *td;
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struct extattr_get_fd_args /* {
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int fd;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct file *fp;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(fd, uap->fd);
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
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if (error)
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return (error);
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vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
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error = extattr_get_vp(fp->f_vnode, uap->attrnamespace,
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attrname, uap->data, uap->nbytes, td);
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fdrop(fp, td);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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int
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extattr_get_file(td, uap)
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struct thread *td;
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struct extattr_get_file_args /* {
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const char *path;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
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uap->path, td);
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error = namei(&nd);
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if (error)
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return (error);
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NDFREE(&nd, NDF_ONLY_PNBUF);
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vfslocked = NDHASGIANT(&nd);
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error = extattr_get_vp(nd.ni_vp, uap->attrnamespace, attrname,
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uap->data, uap->nbytes, td);
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vrele(nd.ni_vp);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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int
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extattr_get_link(td, uap)
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struct thread *td;
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struct extattr_get_link_args /* {
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const char *path;
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int attrnamespace;
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const char *attrname;
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void *data;
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size_t nbytes;
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} */ *uap;
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{
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struct nameidata nd;
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char attrname[EXTATTR_MAXNAMELEN];
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int vfslocked, error;
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AUDIT_ARG(value, uap->attrnamespace);
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error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
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if (error)
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return (error);
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AUDIT_ARG(text, attrname);
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NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
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uap->path, td);
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error = namei(&nd);
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if (error)
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return (error);
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NDFREE(&nd, NDF_ONLY_PNBUF);
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vfslocked = NDHASGIANT(&nd);
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error = extattr_get_vp(nd.ni_vp, uap->attrnamespace, attrname,
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uap->data, uap->nbytes, td);
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vrele(nd.ni_vp);
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VFS_UNLOCK_GIANT(vfslocked);
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return (error);
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}
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/*
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* extattr_delete_vp(): Delete a named extended attribute on a file or
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* directory
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*
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* Arguments: unlocked vnode "vp", attribute namespace "attrnamespace",
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* kernelspace string pointer "attrname", proc "p"
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* Returns: 0 on success, an error number otherwise
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* Locks: none
|
||||
* References: vp must be a valid reference for the duration of the call
|
||||
*/
|
||||
static int
|
||||
extattr_delete_vp(struct vnode *vp, int attrnamespace, const char *attrname,
|
||||
struct thread *td)
|
||||
{
|
||||
struct mount *mp;
|
||||
int error;
|
||||
|
||||
VFS_ASSERT_GIANT(vp->v_mount);
|
||||
error = vn_start_write(vp, &mp, V_WAIT | PCATCH);
|
||||
if (error)
|
||||
return (error);
|
||||
VOP_LEASE(vp, td, td->td_ucred, LEASE_WRITE);
|
||||
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
|
||||
|
||||
#ifdef MAC
|
||||
error = mac_check_vnode_deleteextattr(td->td_ucred, vp, attrnamespace,
|
||||
attrname);
|
||||
if (error)
|
||||
goto done;
|
||||
#endif
|
||||
|
||||
error = VOP_DELETEEXTATTR(vp, attrnamespace, attrname, td->td_ucred,
|
||||
td);
|
||||
if (error == EOPNOTSUPP)
|
||||
error = VOP_SETEXTATTR(vp, attrnamespace, attrname, NULL,
|
||||
td->td_ucred, td);
|
||||
#ifdef MAC
|
||||
done:
|
||||
#endif
|
||||
VOP_UNLOCK(vp, 0, td);
|
||||
vn_finished_write(mp);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
extattr_delete_fd(td, uap)
|
||||
struct thread *td;
|
||||
struct extattr_delete_fd_args /* {
|
||||
int fd;
|
||||
int attrnamespace;
|
||||
const char *attrname;
|
||||
} */ *uap;
|
||||
{
|
||||
struct file *fp;
|
||||
char attrname[EXTATTR_MAXNAMELEN];
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(fd, uap->fd);
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
|
||||
if (error)
|
||||
return (error);
|
||||
AUDIT_ARG(text, attrname);
|
||||
|
||||
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
|
||||
error = extattr_delete_vp(fp->f_vnode, uap->attrnamespace,
|
||||
attrname, td);
|
||||
fdrop(fp, td);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
extattr_delete_file(td, uap)
|
||||
struct thread *td;
|
||||
struct extattr_delete_file_args /* {
|
||||
const char *path;
|
||||
int attrnamespace;
|
||||
const char *attrname;
|
||||
} */ *uap;
|
||||
{
|
||||
struct nameidata nd;
|
||||
char attrname[EXTATTR_MAXNAMELEN];
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
|
||||
if (error)
|
||||
return(error);
|
||||
AUDIT_ARG(text, attrname);
|
||||
|
||||
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
|
||||
uap->path, td);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return(error);
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
|
||||
vfslocked = NDHASGIANT(&nd);
|
||||
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
|
||||
vrele(nd.ni_vp);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return(error);
|
||||
}
|
||||
|
||||
int
|
||||
extattr_delete_link(td, uap)
|
||||
struct thread *td;
|
||||
struct extattr_delete_link_args /* {
|
||||
const char *path;
|
||||
int attrnamespace;
|
||||
const char *attrname;
|
||||
} */ *uap;
|
||||
{
|
||||
struct nameidata nd;
|
||||
char attrname[EXTATTR_MAXNAMELEN];
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
error = copyinstr(uap->attrname, attrname, EXTATTR_MAXNAMELEN, NULL);
|
||||
if (error)
|
||||
return(error);
|
||||
AUDIT_ARG(text, attrname);
|
||||
|
||||
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
|
||||
uap->path, td);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return(error);
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
|
||||
vfslocked = NDHASGIANT(&nd);
|
||||
error = extattr_delete_vp(nd.ni_vp, uap->attrnamespace, attrname, td);
|
||||
vrele(nd.ni_vp);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return(error);
|
||||
}
|
||||
|
||||
/*-
|
||||
* Retrieve a list of extended attributes on a file or directory.
|
||||
*
|
||||
* Arguments: unlocked vnode "vp", attribute namespace 'attrnamespace",
|
||||
* userspace buffer pointer "data", buffer length "nbytes",
|
||||
* thread "td".
|
||||
* Returns: 0 on success, an error number otherwise
|
||||
* Locks: none
|
||||
* References: vp must be a valid reference for the duration of the call
|
||||
*/
|
||||
static int
|
||||
extattr_list_vp(struct vnode *vp, int attrnamespace, void *data,
|
||||
size_t nbytes, struct thread *td)
|
||||
{
|
||||
struct uio auio, *auiop;
|
||||
size_t size, *sizep;
|
||||
struct iovec aiov;
|
||||
ssize_t cnt;
|
||||
int error;
|
||||
|
||||
VFS_ASSERT_GIANT(vp->v_mount);
|
||||
VOP_LEASE(vp, td, td->td_ucred, LEASE_READ);
|
||||
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td);
|
||||
|
||||
auiop = NULL;
|
||||
sizep = NULL;
|
||||
cnt = 0;
|
||||
if (data != NULL) {
|
||||
aiov.iov_base = data;
|
||||
aiov.iov_len = nbytes;
|
||||
auio.uio_iov = &aiov;
|
||||
auio.uio_iovcnt = 1;
|
||||
auio.uio_offset = 0;
|
||||
if (nbytes > INT_MAX) {
|
||||
error = EINVAL;
|
||||
goto done;
|
||||
}
|
||||
auio.uio_resid = nbytes;
|
||||
auio.uio_rw = UIO_READ;
|
||||
auio.uio_segflg = UIO_USERSPACE;
|
||||
auio.uio_td = td;
|
||||
auiop = &auio;
|
||||
cnt = nbytes;
|
||||
} else
|
||||
sizep = &size;
|
||||
|
||||
#ifdef MAC
|
||||
error = mac_check_vnode_listextattr(td->td_ucred, vp, attrnamespace);
|
||||
if (error)
|
||||
goto done;
|
||||
#endif
|
||||
|
||||
error = VOP_LISTEXTATTR(vp, attrnamespace, auiop, sizep,
|
||||
td->td_ucred, td);
|
||||
|
||||
if (auiop != NULL) {
|
||||
cnt -= auio.uio_resid;
|
||||
td->td_retval[0] = cnt;
|
||||
} else
|
||||
td->td_retval[0] = size;
|
||||
|
||||
done:
|
||||
VOP_UNLOCK(vp, 0, td);
|
||||
return (error);
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
extattr_list_fd(td, uap)
|
||||
struct thread *td;
|
||||
struct extattr_list_fd_args /* {
|
||||
int fd;
|
||||
int attrnamespace;
|
||||
void *data;
|
||||
size_t nbytes;
|
||||
} */ *uap;
|
||||
{
|
||||
struct file *fp;
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(fd, uap->fd);
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
error = getvnode(td->td_proc->p_fd, uap->fd, &fp);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
vfslocked = VFS_LOCK_GIANT(fp->f_vnode->v_mount);
|
||||
error = extattr_list_vp(fp->f_vnode, uap->attrnamespace, uap->data,
|
||||
uap->nbytes, td);
|
||||
|
||||
fdrop(fp, td);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
extattr_list_file(td, uap)
|
||||
struct thread*td;
|
||||
struct extattr_list_file_args /* {
|
||||
const char *path;
|
||||
int attrnamespace;
|
||||
void *data;
|
||||
size_t nbytes;
|
||||
} */ *uap;
|
||||
{
|
||||
struct nameidata nd;
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
NDINIT(&nd, LOOKUP, MPSAFE | FOLLOW | AUDITVNODE1, UIO_USERSPACE,
|
||||
uap->path, td);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
|
||||
vfslocked = NDHASGIANT(&nd);
|
||||
error = extattr_list_vp(nd.ni_vp, uap->attrnamespace, uap->data,
|
||||
uap->nbytes, td);
|
||||
|
||||
vrele(nd.ni_vp);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return (error);
|
||||
}
|
||||
|
||||
int
|
||||
extattr_list_link(td, uap)
|
||||
struct thread*td;
|
||||
struct extattr_list_link_args /* {
|
||||
const char *path;
|
||||
int attrnamespace;
|
||||
void *data;
|
||||
size_t nbytes;
|
||||
} */ *uap;
|
||||
{
|
||||
struct nameidata nd;
|
||||
int vfslocked, error;
|
||||
|
||||
AUDIT_ARG(value, uap->attrnamespace);
|
||||
NDINIT(&nd, LOOKUP, MPSAFE | NOFOLLOW | AUDITVNODE1, UIO_USERSPACE,
|
||||
uap->path, td);
|
||||
error = namei(&nd);
|
||||
if (error)
|
||||
return (error);
|
||||
NDFREE(&nd, NDF_ONLY_PNBUF);
|
||||
|
||||
vfslocked = NDHASGIANT(&nd);
|
||||
error = extattr_list_vp(nd.ni_vp, uap->attrnamespace, uap->data,
|
||||
uap->nbytes, td);
|
||||
|
||||
vrele(nd.ni_vp);
|
||||
VFS_UNLOCK_GIANT(vfslocked);
|
||||
return (error);
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user