X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fllite%2Fxattr.c;h=24a89eb5297f050a736a520b219469309299c7c3;hb=3a95036038c277873172a3b75824210ec5af17ba;hp=e2835d95411834a10593ea110e25b92300d3993d;hpb=5ca1054557c07c0775df0f8a041677088e1f9e68;p=fs%2Flustre-release.git diff --git a/lustre/llite/xattr.c b/lustre/llite/xattr.c index e2835d9..24a89eb 100644 --- a/lustre/llite/xattr.c +++ b/lustre/llite/xattr.c @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -26,8 +24,10 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2011, 2012, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -37,7 +37,9 @@ #include #include #include -#include +#ifdef HAVE_SELINUX_IS_ENABLED +#include +#endif #define DEBUG_SUBSYSTEM S_LLITE @@ -45,16 +47,10 @@ #include #include #include -//#include #include #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) @@ -134,6 +130,16 @@ int ll_setxattr_common(struct inode *inode, const char *name, (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); + + /* LU-549: Disable security.selinux when selinux is disabled */ + if (xattr_type == XATTR_SECURITY_T && !selinux_is_enabled() && + strcmp(name, "security.selinux") == 0) + RETURN(-EOPNOTSUPP); + #ifdef CONFIG_FS_POSIX_ACL if (sbi->ll_flags & LL_SBI_RMT_CLIENT && (xattr_type == XATTR_ACL_ACCESS_T || @@ -224,13 +230,21 @@ int ll_setxattr(struct dentry *dentry, const char *name, struct lov_user_md *lump = (struct lov_user_md *)value; int rc = 0; - if (S_ISREG(inode->i_mode)) { + /* 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; + int lum_size = (lump->lmm_magic == LOV_USER_MAGIC_V1) ? + sizeof(*lump) : sizeof(struct lov_user_md_v3); - f.f_dentry = dentry; - rc = ll_lov_setstripe_ea_info(inode, &f, flags, - lump, sizeof(*lump)); + f.f_dentry = dentry; + rc = ll_lov_setstripe_ea_info(inode, &f, flags, lump, + lum_size); /* b10667: rc always be 0 here for now */ rc = 0; } else if (S_ISDIR(inode->i_mode)) { @@ -238,7 +252,10 @@ int ll_setxattr(struct dentry *dentry, const char *name, } return rc; - } + + } else if (strcmp(name, XATTR_NAME_LMA) == 0 || + strcmp(name, XATTR_NAME_LINK) == 0) + return 0; return ll_setxattr_common(inode, name, value, size, flags, OBD_MD_FLXATTR); @@ -289,6 +306,16 @@ 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); + + /* LU-549: Disable security.selinux when selinux is disabled */ + if (xattr_type == XATTR_SECURITY_T && !selinux_is_enabled() && + strcmp(name, "security.selinux") == 0) + RETURN(-EOPNOTSUPP); + #ifdef CONFIG_FS_POSIX_ACL if (sbi->ll_flags & LL_SBI_RMT_CLIENT && (xattr_type == XATTR_ACL_ACCESS_T || @@ -301,21 +328,19 @@ int ll_getxattr_common(struct inode *inode, const char *name, rce->rce_ops != RMT_RGETFACL)) RETURN(-EOPNOTSUPP); } -#endif /* 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 && !(sbi->ll_flags & LL_SBI_RMT_CLIENT)) { 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); + spin_lock(&lli->lli_lock); + acl = posix_acl_dup(lli->lli_posix_acl); + spin_unlock(&lli->lli_lock); if (!acl) RETURN(-ENODATA); @@ -356,6 +381,9 @@ do_getxattr: GOTO(out, rc = -ERANGE); } + if (body->eadatasize == 0) + GOTO(out, rc = -ENODATA); + /* do not need swab xattr data */ xdata = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA, body->eadatasize); @@ -378,13 +406,15 @@ do_getxattr: GOTO(out, rc); } } - - if (xattr_type == XATTR_ACL_ACCESS_T && !body->eadatasize) - GOTO(out, rc = -ENODATA); #endif - LASSERT(buffer); - memcpy(buffer, xdata, body->eadatasize); - rc = body->eadatasize; + + if (body->eadatasize == 0) { + rc = -ENODATA; + } else { + LASSERT(buffer); + memcpy(buffer, xdata, body->eadatasize); + rc = body->eadatasize; + } EXIT; out: ptlrpc_req_finished(req); @@ -410,25 +440,48 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, (strncmp(name, XATTR_LUSTRE_PREFIX, sizeof(XATTR_LUSTRE_PREFIX) - 1) == 0 && strcmp(name + sizeof(XATTR_LUSTRE_PREFIX) - 1, "lov") == 0)) { + struct lov_stripe_md *lsm; 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, + if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode)) + return -ENODATA; + + if (size == 0 && S_ISDIR(inode->i_mode)) { + /* XXX directory EA is fix for now, optimize to save + * RPC transfer */ + GOTO(out, rc = sizeof(struct lov_user_md)); + } + + lsm = ccc_inode_lsm_get(inode); + if (lsm == NULL) { + if (S_ISDIR(inode->i_mode)) { + rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); - } else if (S_ISDIR(inode->i_mode)) { - rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); + } else { + rc = -ENODATA; + } } else { - rc = -ENODATA; - } + /* LSM is present already after lookup/getattr call. + * we need to grab layout lock once it is implemented */ + rc = obd_packmd(ll_i2dtexp(inode), &lmm, lsm); + lmmsize = rc; + } + ccc_inode_lsm_put(inode, lsm); if (rc < 0) GOTO(out, rc); - if (size == 0) - GOTO(out, rc = lmmsize); + + if (size == 0) { + /* used to call ll_get_max_mdsize() forward to get + * the maximum buffer size, while some apps (such as + * rsync 3.0.x) care much about the exact xattr value + * size */ + rc = lmmsize; + GOTO(out, rc); + } if (size < lmmsize) { CERROR("server bug: replied size %d > %d for %s (%s)\n", @@ -438,10 +491,17 @@ ssize_t ll_getxattr(struct dentry *dentry, const char *name, lump = (struct lov_user_md *)buffer; memcpy(lump, lmm, lmmsize); + /* do not return layout gen for getxattr otherwise it would + * confuse tar --xattr by recognizing layout gen as stripe + * offset when the file is restored. See LU-2809. */ + lump->lmm_layout_gen = 0; rc = lmmsize; out: - ptlrpc_req_finished(request); + if (request) + ptlrpc_req_finished(request); + else if (lmm) + obd_free_diskmd(ll_i2dtexp(inode), &lmm); return(rc); } @@ -464,12 +524,34 @@ ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size) ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LISTXATTR, 1); rc = ll_getxattr_common(inode, NULL, buffer, size, OBD_MD_FLXATTRLS); - - 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) + if (rc < 0) + GOTO(out, rc); + + if (buffer != NULL) { + struct ll_sb_info *sbi = ll_i2sbi(inode); + char *xattr_name = buffer; + int xlen, rem = rc; + + while (rem > 0) { + xlen = strnlen(xattr_name, rem - 1) + 1; + rem -= xlen; + if (xattr_type_filter(sbi, + get_xattr_type(xattr_name)) == 0) { + /* skip OK xattr type + * leave it in buffer + */ + xattr_name += xlen; + continue; + } + /* move up remaining xattrs in buffer + * removing the xattr that is not OK + */ + memmove(xattr_name, xattr_name + xlen, rem); + rc -= xlen; + } + } + if (S_ISREG(inode->i_mode)) { + if (!ll_i2info(inode)->lli_has_smd) rc2 = -1; } else if (S_ISDIR(inode->i_mode)) { rc2 = ll_dir_getstripe(inode, &lmm, &lmmsize, &request); @@ -477,19 +559,19 @@ ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size) if (rc2 < 0) { GOTO(out, rc2 = 0); - } else { + } 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; - } + 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;