X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fxattr.c;h=c2e1c5f1e43f5a10bf00b3b69399cb7410610aab;hb=4a7feafcb8f8ddf51ef1e2d6726ce371ff808637;hp=2e0e1f3c685c3b2f2c322a79d718f8a77622d969;hpb=ca0deaa6943849eed198b13f5187db67bd15dedd;p=fs%2Flustre-release.git diff --git a/lustre/llite/xattr.c b/lustre/llite/xattr.c index 2e0e1f3..c2e1c5f 100644 --- a/lustre/llite/xattr.c +++ b/lustre/llite/xattr.c @@ -1,61 +1,87 @@ /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * - * Copyright (c) 2004 - 2005 Cluster File Systems, Inc. + * GPL HEADER START * - * This file is part of Lustre, http://www.lustre.org. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. + * 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. * - * Lustre 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 for more details. + * 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 - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. */ #include #include #include #include -#ifdef HAVE_LINUX_XATTR_ACL_H -#include -#else -#define XATTR_NAME_ACL_ACCESS "system.posix_acl_access" -#define XATTR_NAME_ACL_DEFAULT "system.posix_acl_default" -#endif #define DEBUG_SUBSYSTEM S_LLITE -#include -#include -#include +#include +#include +#include #include -#include + +#ifndef POSIX_ACL_XATTR_ACCESS +#ifndef XATTR_NAME_ACL_ACCESS +#define XATTR_NAME_ACL_ACCESS "system.posix_acl_access" +#endif +#define POSIX_ACL_XATTR_ACCESS XATTR_NAME_ACL_ACCESS +#endif +#ifndef POSIX_ACL_XATTR_DEFAULT +#ifndef XATTR_NAME_ACL_DEFAULT +#define XATTR_NAME_ACL_DEFAULT "system.posix_acl_default" +#endif +#define POSIX_ACL_XATTR_DEFAULT XATTR_NAME_ACL_DEFAULT +#endif #include "llite_internal.h" #define XATTR_USER_PREFIX "user." #define XATTR_TRUSTED_PREFIX "trusted." #define XATTR_SECURITY_PREFIX "security." +#define XATTR_LUSTRE_PREFIX "lustre." #define XATTR_USER_T (1) #define XATTR_TRUSTED_T (2) #define XATTR_SECURITY_T (3) -#define XATTR_ACL_T (4) -#define XATTR_OTHER_T (5) +#define XATTR_ACL_ACCESS_T (4) +#define XATTR_ACL_DEFAULT_T (5) +#define XATTR_LUSTRE_T (6) +#define XATTR_OTHER_T (7) static int get_xattr_type(const char *name) { - if (!strcmp(name, XATTR_NAME_ACL_ACCESS) || - !strcmp(name, XATTR_NAME_ACL_DEFAULT)) - return XATTR_ACL_T; + if (!strcmp(name, POSIX_ACL_XATTR_ACCESS)) + return XATTR_ACL_ACCESS_T; + + if (!strcmp(name, POSIX_ACL_XATTR_DEFAULT)) + return XATTR_ACL_DEFAULT_T; if (!strncmp(name, XATTR_USER_PREFIX, sizeof(XATTR_USER_PREFIX) - 1)) @@ -69,17 +95,24 @@ int get_xattr_type(const char *name) sizeof(XATTR_SECURITY_PREFIX) - 1)) return XATTR_SECURITY_T; + if (!strncmp(name, XATTR_LUSTRE_PREFIX, + sizeof(XATTR_LUSTRE_PREFIX) - 1)) + return XATTR_LUSTRE_T; + return XATTR_OTHER_T; } static int xattr_type_filter(struct ll_sb_info *sbi, int xattr_type) { - if (xattr_type == XATTR_ACL_T && !(sbi->ll_flags & LL_SBI_ACL)) + if ((xattr_type == XATTR_ACL_ACCESS_T || + xattr_type == XATTR_ACL_DEFAULT_T) && + !(sbi->ll_flags & LL_SBI_ACL)) return -EOPNOTSUPP; + if (xattr_type == XATTR_USER_T && !(sbi->ll_flags & LL_SBI_USER_XATTR)) return -EOPNOTSUPP; - if (xattr_type == XATTR_TRUSTED_T && !capable(CAP_SYS_ADMIN)) + if (xattr_type == XATTR_TRUSTED_T && !cfs_capable(CFS_CAP_SYS_ADMIN)) return -EPERM; if (xattr_type == XATTR_OTHER_T) return -EOPNOTSUPP; @@ -94,22 +127,33 @@ int ll_setxattr_common(struct inode *inode, const char *name, { struct ll_sb_info *sbi = ll_i2sbi(inode); struct ptlrpc_request *req; + struct ll_fid fid; int xattr_type, rc; ENTRY; - lprocfs_counter_incr(sbi->ll_stats, LPROC_LL_SETXATTR); xattr_type = get_xattr_type(name); rc = xattr_type_filter(sbi, xattr_type); if (rc) RETURN(rc); - rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode), valid, - name, value, size, 0, flags, &req); + /* b10667: ignore lustre special xattr for now */ + if ((xattr_type == XATTR_TRUSTED_T && strcmp(name, "trusted.lov") == 0) || + (xattr_type == XATTR_LUSTRE_T && strcmp(name, "lustre.lov") == 0)) + RETURN(0); + + /* b15587: ignore security.capability xattr for now */ + if ((xattr_type == XATTR_SECURITY_T && + strcmp(name, "security.capability") == 0)) + RETURN(0); + + ll_inode2fid(&fid, inode); + rc = mdc_setxattr(sbi->ll_mdc_exp, &fid, valid, + name, value, size, 0, flags, &req); if (rc) { if (rc == -EOPNOTSUPP && xattr_type == XATTR_USER_T) { LCONSOLE_INFO("Disabling user_xattr feature because " - "it is not supported on the server\n"); + "it is not supported on the server\n"); sbi->ll_flags &= ~LL_SBI_USER_XATTR; } RETURN(rc); @@ -130,6 +174,40 @@ int ll_setxattr(struct dentry *dentry, const char *name, CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n", inode->i_ino, inode->i_generation, inode, name); + ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETXATTR, 1); + + if ((strncmp(name, XATTR_TRUSTED_PREFIX, + sizeof(XATTR_TRUSTED_PREFIX) - 1) == 0 && + strcmp(name + sizeof(XATTR_TRUSTED_PREFIX) - 1, "lov") == 0) || + (strncmp(name, XATTR_LUSTRE_PREFIX, + sizeof(XATTR_LUSTRE_PREFIX) - 1) == 0 && + strcmp(name + sizeof(XATTR_LUSTRE_PREFIX) - 1, "lov") == 0)) { + struct lov_user_md *lump = (struct lov_user_md *)value; + int rc = 0; + + /* Attributes that are saved via getxattr will always have + * the stripe_offset as 0. Instead, the MDS should be + * allowed to pick the starting OST index. b=17846 */ + if (lump != NULL && lump->lmm_stripe_offset == 0) + lump->lmm_stripe_offset = -1; + + if (lump != NULL && S_ISREG(inode->i_mode)) { + struct file f; + int flags = FMODE_WRITE; + + f.f_dentry = dentry; + ll_lov_setstripe_ea_info(inode, &f, flags, lump, size); + /* b10667: rc always be 0 here for now */ + } else if (S_ISDIR(inode->i_mode)) { + rc = ll_dir_setstripe(inode, lump, 0); + } + + return rc; + } else if (strcmp(name, "trusted.lma") == 0 && + !OBD_FAIL_CHECK(OBD_FAIL_MDS_ALLOW_COMMON_EA_SETTING)) + return 0; + + return ll_setxattr_common(inode, name, value, size, flags, OBD_MD_FLXATTR); } @@ -144,6 +222,7 @@ int ll_removexattr(struct dentry *dentry, const char *name) CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n", inode->i_ino, inode->i_generation, inode, name); + ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_REMOVEXATTR, 1); return ll_setxattr_common(inode, name, NULL, 0, 0, OBD_MD_FLXATTRRM); } @@ -154,15 +233,15 @@ int ll_getxattr_common(struct inode *inode, const char *name, { struct ll_sb_info *sbi = ll_i2sbi(inode); struct ptlrpc_request *req = NULL; - struct mdt_body *body; - int xattr_type, rc; + struct mds_body *body; + struct ll_fid fid; void *xdata; + int xattr_type, rc; ENTRY; CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino, inode->i_generation, inode); - lprocfs_counter_incr(sbi->ll_stats, LPROC_LL_GETXATTR); /* listxattr have slightly different behavior from of ext3: * without 'user_xattr' ext3 will list all xattr names but @@ -178,21 +257,51 @@ int ll_getxattr_common(struct inode *inode, const char *name, if (rc) RETURN(rc); + /* b15587: ignore security.capability xattr for now */ + if ((xattr_type == XATTR_SECURITY_T && + strcmp(name, "security.capability") == 0)) + RETURN(-ENODATA); + + /* posix acl is under protection of LOOKUP lock. when calling to this, + * we just have path resolution to the target inode, so we have great + * chance that cached ACL is uptodate. + */ +#ifdef CONFIG_FS_POSIX_ACL + if (xattr_type == XATTR_ACL_ACCESS_T) { + struct ll_inode_info *lli = ll_i2info(inode); + struct posix_acl *acl; + + spin_lock(&lli->lli_lock); + acl = posix_acl_dup(lli->lli_posix_acl); + spin_unlock(&lli->lli_lock); + + if (!acl) + RETURN(-ENODATA); + + rc = posix_acl_to_xattr(acl, buffer, size); + posix_acl_release(acl); + RETURN(rc); + } + if (xattr_type == XATTR_ACL_DEFAULT_T && !S_ISDIR(inode->i_mode)) + RETURN(-ENODATA); +#endif + do_getxattr: - rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), valid, - name, NULL, 0, size, 0, &req); + ll_inode2fid(&fid, inode); + rc = mdc_getxattr(sbi->ll_mdc_exp, &fid, valid, name, NULL, 0, size, + &req); if (rc) { if (rc == -EOPNOTSUPP && xattr_type == XATTR_USER_T) { LCONSOLE_INFO("Disabling user_xattr feature because " - "it is not supported on the server\n"); + "it is not supported on the server\n"); sbi->ll_flags &= ~LL_SBI_USER_XATTR; } RETURN(rc); } - body = lustre_msg_buf(req->rq_repmsg, 0, sizeof(*body)); + body = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF, sizeof(*body)); LASSERT(body); - LASSERT_REPSWABBED(req, 0); + LASSERT(lustre_rep_swabbed(req, REPLY_REC_OFF)); /* only detect the xattr size */ if (size == 0) @@ -204,17 +313,19 @@ do_getxattr: GOTO(out, rc = -ERANGE); } - if (req->rq_repmsg->bufcount < 2) { - CERROR("reply bufcount %u\n", req->rq_repmsg->bufcount); + if (lustre_msg_bufcount(req->rq_repmsg) < 3) { + CERROR("reply bufcount %u\n", + lustre_msg_bufcount(req->rq_repmsg)); GOTO(out, rc = -EFAULT); } /* do not need swab xattr data */ - LASSERT_REPSWAB(req, 1); - xdata = lustre_msg_buf(req->rq_repmsg, 1, body->eadatasize); + lustre_set_rep_swabbed(req, REPLY_REC_OFF + 1); + xdata = lustre_msg_buf(req->rq_repmsg, REPLY_REC_OFF + 1, + body->eadatasize); if (!xdata) { CERROR("can't extract: %u : %u\n", body->eadatasize, - lustre_msg_buflen(req->rq_repmsg, 1)); + lustre_msg_buflen(req->rq_repmsg, REPLY_REC_OFF + 1)); GOTO(out, rc = -EFAULT); } @@ -237,18 +348,99 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n", inode->i_ino, inode->i_generation, inode, name); + ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1); + + if ((strncmp(name, XATTR_TRUSTED_PREFIX, + sizeof(XATTR_TRUSTED_PREFIX) - 1) == 0 && + strcmp(name + sizeof(XATTR_TRUSTED_PREFIX) - 1, "lov") == 0) || + (strncmp(name, XATTR_LUSTRE_PREFIX, + sizeof(XATTR_LUSTRE_PREFIX) - 1) == 0 && + strcmp(name + sizeof(XATTR_LUSTRE_PREFIX) - 1, "lov") == 0)) { + struct lov_user_md *lump; + struct lov_mds_md *lmm = NULL; + struct ptlrpc_request *request = NULL; + int rc = 0, lmmsize = 0; + + if (S_ISREG(inode->i_mode)) { + rc = ll_lov_getstripe_ea_info(dentry->d_parent->d_inode, + dentry->d_name.name, &lmm, + &lmmsize, &request); + } else if (S_ISDIR(inode->i_mode)) { + rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); + } else { + rc = -ENODATA; + } + + if (rc < 0) + GOTO(out, rc); + if (size == 0) + GOTO(out, rc = lmmsize); + + if (size < lmmsize) { + CERROR("server bug: replied size %d > %d for %s (%s)\n", + lmmsize, (int)size, dentry->d_name.name, name); + GOTO(out, rc = -ERANGE); + } + + lump = (struct lov_user_md *)buffer; + memcpy(lump, lmm, lmmsize); + + rc = lmmsize; +out: + ptlrpc_req_finished(request); + return(rc); + } + return ll_getxattr_common(inode, name, buffer, size, OBD_MD_FLXATTR); } ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size) { struct inode *inode = dentry->d_inode; + int rc = 0, rc2 = 0; + struct lov_mds_md *lmm = NULL; + struct ptlrpc_request *request = NULL; + int lmmsize; LASSERT(inode); CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino, inode->i_generation, inode); - return ll_getxattr_common(inode, NULL, buffer, size, OBD_MD_FLXATTRLS); -} + ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LISTXATTR, 1); + + rc = ll_getxattr_common(inode, NULL, buffer, size, OBD_MD_FLXATTRLS); + if (rc < 0) + GOTO(out, rc); + if (S_ISREG(inode->i_mode)) { + struct ll_inode_info *lli = ll_i2info(inode); + struct lov_stripe_md *lsm = NULL; + lsm = lli->lli_smd; + if (lsm == NULL) + rc2 = -1; + } else if (S_ISDIR(inode->i_mode)) { + rc2 = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); + } + + if (rc2 < 0) { + GOTO(out, rc2 = 0); + } else if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) { + const int prefix_len = sizeof(XATTR_LUSTRE_PREFIX) - 1; + const size_t name_len = sizeof("lov") - 1; + const size_t total_len = prefix_len + name_len + 1; + + if (buffer && (rc + total_len) <= size) { + buffer += rc; + memcpy(buffer,XATTR_LUSTRE_PREFIX, prefix_len); + memcpy(buffer+prefix_len, "lov", name_len); + buffer[prefix_len + name_len] = '\0'; + } + rc2 = total_len; + } +out: + ptlrpc_req_finished(request); + rc = rc + rc2; + + return rc; +}