From: Oleg Drokin Date: Thu, 28 Aug 2014 18:54:22 +0000 (-0400) Subject: staging/lustre/obdclass: remove unused file linkea.c X-Git-Tag: v3.18-rc1~130^2~1158 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=986f7b96532da3592e5fdf4492480d7f0e222c80;p=karo-tx-linux.git staging/lustre/obdclass: remove unused file linkea.c Also unused header file lustre_linkea.h Signed-off-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/lustre/lustre/include/lustre_linkea.h b/drivers/staging/lustre/lustre/include/lustre_linkea.h deleted file mode 100644 index 500ace30cfbf..000000000000 --- a/drivers/staging/lustre/lustre/include/lustre_linkea.h +++ /dev/null @@ -1,57 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA - * - * GPL HEADER END - */ -/* - * Copyright (c) 2013, Intel Corporation. - * Use is subject to license terms. - * - * Author: di wang - */ - -struct linkea_data { - /** - * Buffer to keep link EA body. - */ - struct lu_buf *ld_buf; - /** - * The matched header, entry and its length in the EA - */ - struct link_ea_header *ld_leh; - struct link_ea_entry *ld_lee; - int ld_reclen; -}; - -int linkea_data_new(struct linkea_data *ldata, struct lu_buf *buf); -int linkea_init(struct linkea_data *ldata); -void linkea_entry_unpack(const struct link_ea_entry *lee, int *reclen, - struct lu_name *lname, struct lu_fid *pfid); -int linkea_add_buf(struct linkea_data *ldata, const struct lu_name *lname, - const struct lu_fid *pfid); -void linkea_del_buf(struct linkea_data *ldata, const struct lu_name *lname); -int linkea_links_find(struct linkea_data *ldata, const struct lu_name *lname, - const struct lu_fid *pfid); - -#define LINKEA_NEXT_ENTRY(ldata) \ - (struct link_ea_entry *)((char *)ldata.ld_lee + ldata.ld_reclen) - -#define LINKEA_FIRST_ENTRY(ldata) \ - (struct link_ea_entry *)(ldata.ld_leh + 1) diff --git a/drivers/staging/lustre/lustre/obdclass/linkea.c b/drivers/staging/lustre/lustre/obdclass/linkea.c deleted file mode 100644 index 8a1c7b6fefe9..000000000000 --- a/drivers/staging/lustre/lustre/obdclass/linkea.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 021110-1307, USA - * - * GPL HEADER END - */ -/* - * Copyright (c) 2013, Intel Corporation. - * Use is subject to license terms. - * - * Author: Di Wang - */ - -#include "../include/lustre/lustre_idl.h" -#include "../include/obd.h" -#include "../include/lustre_linkea.h" - -int linkea_data_new(struct linkea_data *ldata, struct lu_buf *buf) -{ - ldata->ld_buf = lu_buf_check_and_alloc(buf, PAGE_CACHE_SIZE); - if (ldata->ld_buf->lb_buf == NULL) - return -ENOMEM; - ldata->ld_leh = ldata->ld_buf->lb_buf; - ldata->ld_leh->leh_magic = LINK_EA_MAGIC; - ldata->ld_leh->leh_len = sizeof(struct link_ea_header); - ldata->ld_leh->leh_reccount = 0; - return 0; -} -EXPORT_SYMBOL(linkea_data_new); - -int linkea_init(struct linkea_data *ldata) -{ - struct link_ea_header *leh; - - LASSERT(ldata->ld_buf != NULL); - leh = ldata->ld_buf->lb_buf; - if (leh->leh_magic == __swab32(LINK_EA_MAGIC)) { - leh->leh_magic = LINK_EA_MAGIC; - leh->leh_reccount = __swab32(leh->leh_reccount); - leh->leh_len = __swab64(leh->leh_len); - /* entries are swabbed by linkea_entry_unpack */ - } - if (leh->leh_magic != LINK_EA_MAGIC) - return -EINVAL; - if (leh->leh_reccount == 0) - return -ENODATA; - - ldata->ld_leh = leh; - return 0; -} -EXPORT_SYMBOL(linkea_init); - -/** - * Pack a link_ea_entry. - * All elements are stored as chars to avoid alignment issues. - * Numbers are always big-endian - * \retval record length - */ -static int linkea_entry_pack(struct link_ea_entry *lee, - const struct lu_name *lname, - const struct lu_fid *pfid) -{ - struct lu_fid tmpfid; - int reclen; - - fid_cpu_to_be(&tmpfid, pfid); - if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_CRASH)) - tmpfid.f_ver = ~0; - memcpy(&lee->lee_parent_fid, &tmpfid, sizeof(tmpfid)); - memcpy(lee->lee_name, lname->ln_name, lname->ln_namelen); - reclen = sizeof(struct link_ea_entry) + lname->ln_namelen; - - lee->lee_reclen[0] = (reclen >> 8) & 0xff; - lee->lee_reclen[1] = reclen & 0xff; - return reclen; -} - -void linkea_entry_unpack(const struct link_ea_entry *lee, int *reclen, - struct lu_name *lname, struct lu_fid *pfid) -{ - *reclen = (lee->lee_reclen[0] << 8) | lee->lee_reclen[1]; - memcpy(pfid, &lee->lee_parent_fid, sizeof(*pfid)); - fid_be_to_cpu(pfid, pfid); - lname->ln_name = lee->lee_name; - lname->ln_namelen = *reclen - sizeof(struct link_ea_entry); -} -EXPORT_SYMBOL(linkea_entry_unpack); - -/** - * Add a record to the end of link ea buf - **/ -int linkea_add_buf(struct linkea_data *ldata, const struct lu_name *lname, - const struct lu_fid *pfid) -{ - LASSERT(ldata->ld_leh != NULL); - - if (lname == NULL || pfid == NULL) - return -EINVAL; - - ldata->ld_reclen = lname->ln_namelen + sizeof(struct link_ea_entry); - if (ldata->ld_leh->leh_len + ldata->ld_reclen > - ldata->ld_buf->lb_len) { - if (lu_buf_check_and_grow(ldata->ld_buf, - ldata->ld_leh->leh_len + - ldata->ld_reclen) < 0) - return -ENOMEM; - } - - ldata->ld_leh = ldata->ld_buf->lb_buf; - ldata->ld_lee = ldata->ld_buf->lb_buf + ldata->ld_leh->leh_len; - ldata->ld_reclen = linkea_entry_pack(ldata->ld_lee, lname, pfid); - ldata->ld_leh->leh_len += ldata->ld_reclen; - ldata->ld_leh->leh_reccount++; - CDEBUG(D_INODE, "New link_ea name '%.*s' is added\n", - lname->ln_namelen, lname->ln_name); - return 0; -} -EXPORT_SYMBOL(linkea_add_buf); - -/** Del the current record from the link ea buf */ -void linkea_del_buf(struct linkea_data *ldata, const struct lu_name *lname) -{ - LASSERT(ldata->ld_leh != NULL && ldata->ld_lee != NULL); - - ldata->ld_leh->leh_reccount--; - ldata->ld_leh->leh_len -= ldata->ld_reclen; - memmove(ldata->ld_lee, (char *)ldata->ld_lee + ldata->ld_reclen, - (char *)ldata->ld_leh + ldata->ld_leh->leh_len - - (char *)ldata->ld_lee); - CDEBUG(D_INODE, "Old link_ea name '%.*s' is removed\n", - lname->ln_namelen, lname->ln_name); -} -EXPORT_SYMBOL(linkea_del_buf); - -/** - * Check if such a link exists in linkEA. - * - * \param ldata link data the search to be done on - * \param lname name in the parent's directory entry pointing to this object - * \param pfid parent fid the link to be found for - * - * \retval 0 success - * \retval -ENOENT link does not exist - * \retval -ve on error - */ -int linkea_links_find(struct linkea_data *ldata, const struct lu_name *lname, - const struct lu_fid *pfid) -{ - struct lu_name tmpname; - struct lu_fid tmpfid; - int count; - - LASSERT(ldata->ld_leh != NULL); - - /* link #0 */ - ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1); - - for (count = 0; count < ldata->ld_leh->leh_reccount; count++) { - linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, - &tmpname, &tmpfid); - if (tmpname.ln_namelen == lname->ln_namelen && - lu_fid_eq(&tmpfid, pfid) && - (strncmp(tmpname.ln_name, lname->ln_name, - tmpname.ln_namelen) == 0)) - break; - ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee + - ldata->ld_reclen); - } - - if (count == ldata->ld_leh->leh_reccount) { - CDEBUG(D_INODE, "Old link_ea name '%.*s' not found\n", - lname->ln_namelen, lname->ln_name); - ldata->ld_lee = NULL; - return -ENOENT; - } - return 0; -} -EXPORT_SYMBOL(linkea_links_find);