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Differential D28677 Diff 83996 sys/contrib/openzfs/module/os/freebsd/zfs/zfs_ctldir.c

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sys/contrib/openzfs/module/os/freebsd/zfs/zfs_ctldir.c

Show First 20 Lines • Show All 245 Lines • ▼ Show 20 Linessfs_reclaim_vnode(vnode_t *vp)
sfs_vnode_remove(vp); sfs_vnode_remove(vp);
data = vp->v_data; data = vp->v_data;
vp->v_data = NULL; vp->v_data = NULL;
return (data); return (data);
} }
static int static int
sfs_readdir_common(uint64_t parent_id, uint64_t id, struct vop_readdir_args *ap, sfs_readdir_common(uint64_t parent_id, uint64_t id, struct vop_readdir_args *ap,
uio_t *uio, off_t *offp) zfs_uio_t *uio, off_t *offp)
{ {
struct dirent entry; struct dirent entry;
int error; int error;
/* Reset ncookies for subsequent use of vfs_read_dirent. */ /* Reset ncookies for subsequent use of vfs_read_dirent. */
if (ap->a_ncookies != NULL) if (ap->a_ncookies != NULL)
*ap->a_ncookies = 0; *ap->a_ncookies = 0;
if (uio->uio_resid < sizeof (entry)) if (zfs_uio_resid(uio) < sizeof (entry))
return (SET_ERROR(EINVAL)); return (SET_ERROR(EINVAL));
if (uio->uio_offset < 0) if (zfs_uio_offset(uio) < 0)
return (SET_ERROR(EINVAL)); return (SET_ERROR(EINVAL));
if (uio->uio_offset == 0) { if (zfs_uio_offset(uio) == 0) {
entry.d_fileno = id; entry.d_fileno = id;
entry.d_type = DT_DIR; entry.d_type = DT_DIR;
entry.d_name[0] = '.'; entry.d_name[0] = '.';
entry.d_name[1] = '\0'; entry.d_name[1] = '\0';
entry.d_namlen = 1; entry.d_namlen = 1;
entry.d_reclen = sizeof (entry); entry.d_reclen = sizeof (entry);
error = vfs_read_dirent(ap, &entry, uio->uio_offset); error = vfs_read_dirent(ap, &entry, zfs_uio_offset(uio));
if (error != 0) if (error != 0)
return (SET_ERROR(error)); return (SET_ERROR(error));
} }
if (uio->uio_offset < sizeof (entry)) if (zfs_uio_offset(uio) < sizeof (entry))
return (SET_ERROR(EINVAL)); return (SET_ERROR(EINVAL));
if (uio->uio_offset == sizeof (entry)) { if (zfs_uio_offset(uio) == sizeof (entry)) {
entry.d_fileno = parent_id; entry.d_fileno = parent_id;
entry.d_type = DT_DIR; entry.d_type = DT_DIR;
entry.d_name[0] = '.'; entry.d_name[0] = '.';
entry.d_name[1] = '.'; entry.d_name[1] = '.';
entry.d_name[2] = '\0'; entry.d_name[2] = '\0';
entry.d_namlen = 2; entry.d_namlen = 2;
entry.d_reclen = sizeof (entry); entry.d_reclen = sizeof (entry);
error = vfs_read_dirent(ap, &entry, uio->uio_offset); error = vfs_read_dirent(ap, &entry, zfs_uio_offset(uio));
if (error != 0) if (error != 0)
return (SET_ERROR(error)); return (SET_ERROR(error));
} }
if (offp != NULL) if (offp != NULL)
*offp = 2 * sizeof (entry); *offp = 2 * sizeof (entry);
return (0); return (0);
} }
▲ Show 20 Lines • Show All 362 Lines • ▼ Show 20 Lines
static int static int
zfsctl_root_readdir(struct vop_readdir_args *ap) zfsctl_root_readdir(struct vop_readdir_args *ap)
{ {
struct dirent entry; struct dirent entry;
vnode_t *vp = ap->a_vp; vnode_t *vp = ap->a_vp;
zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data; zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data;
zfsctl_root_t *node = vp->v_data; zfsctl_root_t *node = vp->v_data;
uio_t *uio = ap->a_uio; zfs_uio_t uio;
int *eofp = ap->a_eofflag; int *eofp = ap->a_eofflag;
off_t dots_offset; off_t dots_offset;
int error; int error;
zfs_uio_init(&uio, ap->a_uio);
ASSERT(vp->v_type == VDIR); ASSERT(vp->v_type == VDIR);
error = sfs_readdir_common(zfsvfs->z_root, ZFSCTL_INO_ROOT, ap, uio, error = sfs_readdir_common(zfsvfs->z_root, ZFSCTL_INO_ROOT, ap, &uio,
&dots_offset); &dots_offset);
if (error != 0) { if (error != 0) {
if (error == ENAMETOOLONG) /* ran out of destination space */ if (error == ENAMETOOLONG) /* ran out of destination space */
error = 0; error = 0;
return (error); return (error);
} }
if (uio->uio_offset != dots_offset) if (zfs_uio_offset(&uio) != dots_offset)
return (SET_ERROR(EINVAL)); return (SET_ERROR(EINVAL));
CTASSERT(sizeof (node->snapdir->sn_name) <= sizeof (entry.d_name)); CTASSERT(sizeof (node->snapdir->sn_name) <= sizeof (entry.d_name));
entry.d_fileno = node->snapdir->sn_id; entry.d_fileno = node->snapdir->sn_id;
entry.d_type = DT_DIR; entry.d_type = DT_DIR;
strcpy(entry.d_name, node->snapdir->sn_name); strcpy(entry.d_name, node->snapdir->sn_name);
entry.d_namlen = strlen(entry.d_name); entry.d_namlen = strlen(entry.d_name);
entry.d_reclen = sizeof (entry); entry.d_reclen = sizeof (entry);
error = vfs_read_dirent(ap, &entry, uio->uio_offset); error = vfs_read_dirent(ap, &entry, zfs_uio_offset(&uio));
if (error != 0) { if (error != 0) {
if (error == ENAMETOOLONG) if (error == ENAMETOOLONG)
error = 0; error = 0;
return (SET_ERROR(error)); return (SET_ERROR(error));
} }
if (eofp != NULL) if (eofp != NULL)
*eofp = 1; *eofp = 1;
return (0); return (0);
▲ Show 20 Lines • Show All 324 Lines • ▼ Show 20 Lines
static int static int
zfsctl_snapdir_readdir(struct vop_readdir_args *ap) zfsctl_snapdir_readdir(struct vop_readdir_args *ap)
{ {
char snapname[ZFS_MAX_DATASET_NAME_LEN]; char snapname[ZFS_MAX_DATASET_NAME_LEN];
struct dirent entry; struct dirent entry;
vnode_t *vp = ap->a_vp; vnode_t *vp = ap->a_vp;
zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data; zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data;
uio_t *uio = ap->a_uio; zfs_uio_t uio;
int *eofp = ap->a_eofflag; int *eofp = ap->a_eofflag;
off_t dots_offset; off_t dots_offset;
int error; int error;
zfs_uio_init(&uio, ap->a_uio);
ASSERT(vp->v_type == VDIR); ASSERT(vp->v_type == VDIR);
error = sfs_readdir_common(ZFSCTL_INO_ROOT, ZFSCTL_INO_SNAPDIR, ap, uio, error = sfs_readdir_common(ZFSCTL_INO_ROOT, ZFSCTL_INO_SNAPDIR, ap,
&dots_offset); &uio, &dots_offset);
if (error != 0) { if (error != 0) {
if (error == ENAMETOOLONG) /* ran out of destination space */ if (error == ENAMETOOLONG) /* ran out of destination space */
error = 0; error = 0;
return (error); return (error);
} }
ZFS_ENTER(zfsvfs); ZFS_ENTER(zfsvfs);
for (;;) { for (;;) {
uint64_t cookie; uint64_t cookie;
uint64_t id; uint64_t id;
cookie = uio->uio_offset - dots_offset; cookie = zfs_uio_offset(&uio) - dots_offset;
dsl_pool_config_enter(dmu_objset_pool(zfsvfs->z_os), FTAG); dsl_pool_config_enter(dmu_objset_pool(zfsvfs->z_os), FTAG);
error = dmu_snapshot_list_next(zfsvfs->z_os, sizeof (snapname), error = dmu_snapshot_list_next(zfsvfs->z_os, sizeof (snapname),
snapname, &id, &cookie, NULL); snapname, &id, &cookie, NULL);
dsl_pool_config_exit(dmu_objset_pool(zfsvfs->z_os), FTAG); dsl_pool_config_exit(dmu_objset_pool(zfsvfs->z_os), FTAG);
if (error != 0) { if (error != 0) {
if (error == ENOENT) { if (error == ENOENT) {
if (eofp != NULL) if (eofp != NULL)
*eofp = 1; *eofp = 1;
error = 0; error = 0;
} }
ZFS_EXIT(zfsvfs); ZFS_EXIT(zfsvfs);
return (error); return (error);
} }
entry.d_fileno = id; entry.d_fileno = id;
entry.d_type = DT_DIR; entry.d_type = DT_DIR;
strcpy(entry.d_name, snapname); strcpy(entry.d_name, snapname);
entry.d_namlen = strlen(entry.d_name); entry.d_namlen = strlen(entry.d_name);
entry.d_reclen = sizeof (entry); entry.d_reclen = sizeof (entry);
error = vfs_read_dirent(ap, &entry, uio->uio_offset); error = vfs_read_dirent(ap, &entry, zfs_uio_offset(&uio));
if (error != 0) { if (error != 0) {
if (error == ENAMETOOLONG) if (error == ENAMETOOLONG)
error = 0; error = 0;
ZFS_EXIT(zfsvfs); ZFS_EXIT(zfsvfs);
return (SET_ERROR(error)); return (SET_ERROR(error));
} }
uio->uio_offset = cookie + dots_offset; zfs_uio_setoffset(&uio, cookie + dots_offset);
} }
/* NOTREACHED */ /* NOTREACHED */
} }
static int static int
zfsctl_snapdir_getattr(struct vop_getattr_args *ap) zfsctl_snapdir_getattr(struct vop_getattr_args *ap)
{ {
vnode_t *vp = ap->a_vp; vnode_t *vp = ap->a_vp;
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