[09/18] f2fs: use generic posix ACL infrastructure

Message ID	20131211104528.029931306@bombadil.infradead.org (mailing list archive)
State	Not Applicable, archived
Headers	show Return-Path: <linux-btrfs-owner@kernel.org> Message-Id: <20131211104528.029931306@bombadil.infradead.org> User-Agent: quilt/0.60-1 Date: Wed, 11 Dec 2013 02:42:52 -0800 From: Christoph Hellwig <hch@infradead.org> To: viro@zeniv.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-mtd@lists.infradead.org, Mark Fasheh <mfasheh@suse.com>, Joel Becker <jlbec@evilplan.org>, reiserfs-devel@vger.kernel.org, xfs@oss.sgi.com, jfs-discussion@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, Andreas Gruenbacher <andreas.gruenbacher@linbit.com>, Jaegeuk Kim <jaegeuk.kim@samsung.com> Subject: [PATCH 09/18] f2fs: use generic posix ACL infrastructure References: <20131211104243.148113893@bombadil.infradead.org> Content-Disposition: inline; filename=0009-f2fs-use-generic-posix-ACL-infrastructure.patch Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk

diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index 45e8430..fa8da4c 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -17,9 +17,6 @@ #include "xattr.h" #include "acl.h" -#define get_inode_mode(i) ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ - (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) - static inline size_t f2fs_acl_size(int count) { if (count <= 4) { @@ -167,19 +164,11 @@ fail: struct posix_acl *f2fs_get_acl(struct inode *inode, int type) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); int name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT; void *value = NULL; struct posix_acl *acl; int retval; - if (!test_opt(sbi, POSIX_ACL)) - return NULL; - - acl = get_cached_acl(inode, type); - if (acl != ACL_NOT_CACHED) - return acl; - if (type == ACL_TYPE_ACCESS) name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -205,21 +194,15 @@ struct posix_acl *f2fs_get_acl(struct inode *inode, int type) return acl; } -static int f2fs_set_acl(struct inode *inode, int type, +static int __f2fs_set_acl(struct inode *inode, int type, struct posix_acl *acl, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct f2fs_inode_info *fi = F2FS_I(inode); int name_index; void *value = NULL; size_t size = 0; int error; - if (!test_opt(sbi, POSIX_ACL)) - return 0; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - switch (type) { case ACL_TYPE_ACCESS: name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS; @@ -261,154 +244,31 @@ static int f2fs_set_acl(struct inode *inode, int type, return error; } -int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage) +int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); - struct posix_acl *acl = NULL; - int error = 0; - - if (!S_ISLNK(inode->i_mode)) { - if (test_opt(sbi, POSIX_ACL)) { - acl = f2fs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) - inode->i_mode &= ~current_umask(); - } - - if (!test_opt(sbi, POSIX_ACL) || !acl) - goto cleanup; - - if (S_ISDIR(inode->i_mode)) { - error = f2fs_set_acl(inode, ACL_TYPE_DEFAULT, acl, ipage); - if (error) - goto cleanup; - } - error = __posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (error < 0) - return error; - if (error > 0) - error = f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, ipage); -cleanup: - posix_acl_release(acl); - return error; + return __f2fs_set_acl(inode, type, acl, NULL); } -int f2fs_acl_chmod(struct inode *inode) +int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - struct posix_acl *acl; - int error; - umode_t mode = get_inode_mode(inode); - - if (!test_opt(sbi, POSIX_ACL)) - return 0; - if (S_ISLNK(mode)) - return -EOPNOTSUPP; - - acl = f2fs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); + struct posix_acl *default_acl, *acl; + int error = 0; - error = __posix_acl_chmod(&acl, GFP_KERNEL, mode); + error = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); if (error) return error; - error = f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, NULL); - posix_acl_release(acl); - return error; -} - -static size_t f2fs_xattr_list_acl(struct dentry *dentry, char *list, - size_t list_size, const char *name, size_t name_len, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - const char *xname = POSIX_ACL_XATTR_DEFAULT; - size_t size; - - if (!test_opt(sbi, POSIX_ACL)) - return 0; - - if (type == ACL_TYPE_ACCESS) - xname = POSIX_ACL_XATTR_ACCESS; - - size = strlen(xname) + 1; - if (list && size <= list_size) - memcpy(list, xname, size); - return size; -} - -static int f2fs_xattr_get_acl(struct dentry *dentry, const char *name, - void *buffer, size_t size, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - struct posix_acl *acl; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(sbi, POSIX_ACL)) - return -EOPNOTSUPP; - - acl = f2fs_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (!acl) - return -ENODATA; - error = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return error; -} - -static int f2fs_xattr_set_acl(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct f2fs_sb_info *sbi = F2FS_SB(dentry->d_sb); - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - int error; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!test_opt(sbi, POSIX_ACL)) - return -EOPNOTSUPP; - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl) { - error = posix_acl_valid(acl); - if (error) - goto release_and_out; - } - } else { - acl = NULL; + if (default_acl) { + error = __f2fs_set_acl(inode, ACL_TYPE_DEFAULT, default_acl, + ipage); + posix_acl_release(default_acl); + } + if (acl) { + if (error) + error = __f2fs_set_acl(inode, ACL_TYPE_ACCESS, acl, + ipage); + posix_acl_release(acl); } - error = f2fs_set_acl(inode, type, acl, NULL); - -release_and_out: - posix_acl_release(acl); return error; } - -const struct xattr_handler f2fs_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = f2fs_xattr_list_acl, - .get = f2fs_xattr_get_acl, - .set = f2fs_xattr_set_acl, -}; - -const struct xattr_handler f2fs_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = f2fs_xattr_list_acl, - .get = f2fs_xattr_get_acl, - .set = f2fs_xattr_set_acl, -}; diff --git a/fs/f2fs/acl.h b/fs/f2fs/acl.h index 4963313..e086465 100644 --- a/fs/f2fs/acl.h +++ b/fs/f2fs/acl.h @@ -37,18 +37,13 @@ struct f2fs_acl_header { #ifdef CONFIG_F2FS_FS_POSIX_ACL extern struct posix_acl *f2fs_get_acl(struct inode *, int); -extern int f2fs_acl_chmod(struct inode *); +extern int f2fs_set_acl(struct inode *inode, struct posix_acl *acl, int type); extern int f2fs_init_acl(struct inode *, struct inode *, struct page *); #else #define f2fs_check_acl NULL #define f2fs_get_acl NULL #define f2fs_set_acl NULL -static inline int f2fs_acl_chmod(struct inode *inode) -{ - return 0; -} - static inline int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *page) { diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 89dc750..934b59c 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -953,6 +953,10 @@ static inline int f2fs_readonly(struct super_block *sb) return sb->s_flags & MS_RDONLY; } +#define get_inode_mode(i) \ + ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ + (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) + /* * file.c */ diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 7d714f4..cf835e0 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -390,7 +390,7 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) __setattr_copy(inode, attr); if (attr->ia_valid & ATTR_MODE) { - err = f2fs_acl_chmod(inode); + err = posix_acl_chmod(inode, get_inode_mode(inode)); if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { inode->i_mode = fi->i_acl_mode; clear_inode_flag(fi, FI_ACL_MODE); @@ -405,6 +405,7 @@ const struct inode_operations f2fs_file_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 575adac..5846eeb 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -496,6 +496,7 @@ const struct inode_operations f2fs_dir_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, @@ -522,6 +523,7 @@ const struct inode_operations f2fs_special_inode_operations = { .getattr = f2fs_getattr, .setattr = f2fs_setattr, .get_acl = f2fs_get_acl, + .set_acl = f2fs_set_acl, #ifdef CONFIG_F2FS_FS_XATTR .setxattr = generic_setxattr, .getxattr = generic_getxattr, diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index aa7a3f1..e2b9299 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -21,6 +21,7 @@ #include <linux/rwsem.h> #include <linux/f2fs_fs.h> #include <linux/security.h> +#include <linux/posix_acl_xattr.h> #include "f2fs.h" #include "xattr.h" @@ -216,8 +217,8 @@ const struct xattr_handler f2fs_xattr_security_handler = { static const struct xattr_handler *f2fs_xattr_handler_map[] = { [F2FS_XATTR_INDEX_USER] = &f2fs_xattr_user_handler, #ifdef CONFIG_F2FS_FS_POSIX_ACL - [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &f2fs_xattr_acl_access_handler, - [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &f2fs_xattr_acl_default_handler, + [F2FS_XATTR_INDEX_POSIX_ACL_ACCESS] = &posix_acl_access_xattr_handler, + [F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &posix_acl_default_xattr_handler, #endif [F2FS_XATTR_INDEX_TRUSTED] = &f2fs_xattr_trusted_handler, #ifdef CONFIG_F2FS_FS_SECURITY @@ -229,8 +230,8 @@ static const struct xattr_handler *f2fs_xattr_handler_map[] = { const struct xattr_handler *f2fs_xattr_handlers[] = { &f2fs_xattr_user_handler, #ifdef CONFIG_F2FS_FS_POSIX_ACL - &f2fs_xattr_acl_access_handler, - &f2fs_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, #endif &f2fs_xattr_trusted_handler, #ifdef CONFIG_F2FS_FS_SECURITY diff --git a/fs/f2fs/xattr.h b/fs/f2fs/xattr.h index 02a08fb..b21d9eb 100644 --- a/fs/f2fs/xattr.h +++ b/fs/f2fs/xattr.h @@ -108,8 +108,6 @@ struct f2fs_xattr_entry { #ifdef CONFIG_F2FS_FS_XATTR extern const struct xattr_handler f2fs_xattr_user_handler; extern const struct xattr_handler f2fs_xattr_trusted_handler; -extern const struct xattr_handler f2fs_xattr_acl_access_handler; -extern const struct xattr_handler f2fs_xattr_acl_default_handler; extern const struct xattr_handler f2fs_xattr_advise_handler; extern const struct xattr_handler f2fs_xattr_security_handler;

[09/18] f2fs: use generic posix ACL infrastructure

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