/* * linux/fs/ceph/acl.c * * Copyright (C) 2013 Guangliang Zhao, * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 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 for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #include #include #include #include #include #include #include #include #include "super.h" static inline void ceph_set_cached_acl(struct inode *inode, int type, struct posix_acl *acl) { struct ceph_inode_info *ci = ceph_inode(inode); spin_lock(&ci->i_ceph_lock); if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)) set_cached_acl(inode, type, acl); else forget_cached_acl(inode, type); spin_unlock(&ci->i_ceph_lock); } struct posix_acl *ceph_get_acl(struct inode *inode, int type) { int size; const char *name; char *value = NULL; struct posix_acl *acl; switch (type) { case ACL_TYPE_ACCESS: name = XATTR_NAME_POSIX_ACL_ACCESS; break; case ACL_TYPE_DEFAULT: name = XATTR_NAME_POSIX_ACL_DEFAULT; break; default: BUG(); } size = __ceph_getxattr(inode, name, "", 0); if (size > 0) { value = kzalloc(size, GFP_NOFS); if (!value) return ERR_PTR(-ENOMEM); size = __ceph_getxattr(inode, name, value, size); } if (size > 0) acl = posix_acl_from_xattr(&init_user_ns, value, size); else if (size == -ERANGE || size == -ENODATA || size == 0) acl = NULL; else acl = ERR_PTR(-EIO); kfree(value); if (!IS_ERR(acl)) ceph_set_cached_acl(inode, type, acl); return acl; } int ceph_set_acl(struct inode *inode, struct posix_acl *acl, int type) { int ret = 0, size = 0; const char *name = NULL; char *value = NULL; struct iattr newattrs; umode_t new_mode = inode->i_mode, old_mode = inode->i_mode; switch (type) { case ACL_TYPE_ACCESS: name = XATTR_NAME_POSIX_ACL_ACCESS; if (acl) { ret = posix_acl_update_mode(inode, &new_mode, &acl); if (ret) goto out; } break; case ACL_TYPE_DEFAULT: if (!S_ISDIR(inode->i_mode)) { ret = acl ? -EINVAL : 0; goto out; } name = XATTR_NAME_POSIX_ACL_DEFAULT; break; default: ret = -EINVAL; goto out; } if (acl) { size = posix_acl_xattr_size(acl->a_count); value = kmalloc(size, GFP_NOFS); if (!value) { ret = -ENOMEM; goto out; } ret = posix_acl_to_xattr(&init_user_ns, acl, value, size); if (ret < 0) goto out_free; } if (ceph_snap(inode) != CEPH_NOSNAP) { ret = -EROFS; goto out_free; } if (new_mode != old_mode) { newattrs.ia_mode = new_mode; newattrs.ia_valid = ATTR_MODE; ret = __ceph_setattr(inode, &newattrs); if (ret) goto out_free; } ret = __ceph_setxattr(inode, name, value, size, 0); if (ret) { if (new_mode != old_mode) { newattrs.ia_mode = old_mode; newattrs.ia_valid = ATTR_MODE; __ceph_setattr(inode, &newattrs); } goto out_free; } ceph_set_cached_acl(inode, type, acl); out_free: kfree(value); out: return ret; } int ceph_pre_init_acls(struct inode *dir, umode_t *mode, struct ceph_acls_info *info) { struct posix_acl *acl, *default_acl; size_t val_size1 = 0, val_size2 = 0; struct ceph_pagelist *pagelist = NULL; void *tmp_buf = NULL; int err; err = posix_acl_create(dir, mode, &default_acl, &acl); if (err) return err; if (acl) { int ret = posix_acl_equiv_mode(acl, mode); if (ret < 0) goto out_err; if (ret == 0) { posix_acl_release(acl); acl = NULL; } } if (!default_acl && !acl) return 0; if (acl) val_size1 = posix_acl_xattr_size(acl->a_count); if (default_acl) val_size2 = posix_acl_xattr_size(default_acl->a_count); err = -ENOMEM; tmp_buf = kmalloc(max(val_size1, val_size2), GFP_KERNEL); if (!tmp_buf) goto out_err; pagelist = kmalloc(sizeof(struct ceph_pagelist), GFP_KERNEL); if (!pagelist) goto out_err; ceph_pagelist_init(pagelist); err = ceph_pagelist_reserve(pagelist, PAGE_SIZE); if (err) goto out_err; ceph_pagelist_encode_32(pagelist, acl && default_acl ? 2 : 1); if (acl) { size_t len = strlen(XATTR_NAME_POSIX_ACL_ACCESS); err = ceph_pagelist_reserve(pagelist, len + val_size1 + 8); if (err) goto out_err; ceph_pagelist_encode_string(pagelist, XATTR_NAME_POSIX_ACL_ACCESS, len); err = posix_acl_to_xattr(&init_user_ns, acl, tmp_buf, val_size1); if (err < 0) goto out_err; ceph_pagelist_encode_32(pagelist, val_size1); ceph_pagelist_append(pagelist, tmp_buf, val_size1); } if (default_acl) { size_t len = strlen(XATTR_NAME_POSIX_ACL_DEFAULT); err = ceph_pagelist_reserve(pagelist, len + val_size2 + 8); if (err) goto out_err; err = ceph_pagelist_encode_string(pagelist, XATTR_NAME_POSIX_ACL_DEFAULT, len); err = posix_acl_to_xattr(&init_user_ns, default_acl, tmp_buf, val_size2); if (err < 0) goto out_err; ceph_pagelist_encode_32(pagelist, val_size2); ceph_pagelist_append(pagelist, tmp_buf, val_size2); } kfree(tmp_buf); info->acl = acl; info->default_acl = default_acl; info->pagelist = pagelist; return 0; out_err: posix_acl_release(acl); posix_acl_release(default_acl); kfree(tmp_buf); if (pagelist) ceph_pagelist_release(pagelist); return err; } void ceph_init_inode_acls(struct inode* inode, struct ceph_acls_info *info) { if (!inode) return; ceph_set_cached_acl(inode, ACL_TYPE_ACCESS, info->acl); ceph_set_cached_acl(inode, ACL_TYPE_DEFAULT, info->default_acl); } void ceph_release_acls_info(struct ceph_acls_info *info) { posix_acl_release(info->acl); posix_acl_release(info->default_acl); if (info->pagelist) ceph_pagelist_release(info->pagelist); } t-next.git/commit/sound/pci/aw2/aw2-saa7146.c?id=1f3a8e49d8f28f498b8694464623ac20aebfe62a'>1f3a8e49d8f28f498b8694464623ac20aebfe62a (diff)
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer type cleanups from Thomas Gleixner: "This series does a tree wide cleanup of types related to timers/timekeeping. - Get rid of cycles_t and use a plain u64. The type is not really helpful and caused more confusion than clarity - Get rid of the ktime union. The union has become useless as we use the scalar nanoseconds storage unconditionally now. The 32bit timespec alike storage got removed due to the Y2038 limitations some time ago. That leaves the odd union access around for no reason. Clean it up. Both changes have been done with coccinelle and a small amount of manual mopping up" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ktime: Get rid of ktime_equal() ktime: Cleanup ktime_set() usage ktime: Get rid of the union clocksource: Use a plain u64 instead of cycle_t
Diffstat (limited to 'sound/pci/aw2/aw2-saa7146.c')