From: Yunlei He <heyunlei@hihonor.com> To: chao@kernel.org, jaegeuk@kernel.org, ebiggers@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-fscrypt@vger.kernel.org, bintian.wang@hihonor.com, Yunlei He <heyunlei@hihonor.com>, stable@vger.kernel.org Subject: [f2fs-dev][PATCH v2] f2fs: fsverity: Truncate cache pages if set verity failed Date: Mon, 1 Mar 2021 22:15:06 +0800 [thread overview] Message-ID: <20210301141506.6410-1-heyunlei@hihonor.com> (raw) If file enable verity failed, should truncate anything wrote past i_size, including cache pages. Fixes: 95ae251fe828 ("f2fs: add fs-verity support") Cc: <stable@vger.kernel.org> # v5.4+ Signed-off-by: Yunlei He <heyunlei@hihonor.com> --- fs/f2fs/verity.c | 47 +++++++++++++++++++++++++---------------------- 1 file changed, 25 insertions(+), 22 deletions(-) diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c index 054ec852b5ea..3aa851affc46 100644 --- a/fs/f2fs/verity.c +++ b/fs/f2fs/verity.c @@ -158,33 +158,36 @@ static int f2fs_end_enable_verity(struct file *filp, const void *desc, .size = cpu_to_le32(desc_size), .pos = cpu_to_le64(desc_pos), }; - int err = 0; + int err; - if (desc != NULL) { - /* Succeeded; write the verity descriptor. */ - err = pagecache_write(inode, desc, desc_size, desc_pos); + clear_inode_flag(inode, FI_VERITY_IN_PROGRESS); + if (!desc) + return 0; - /* Write all pages before clearing FI_VERITY_IN_PROGRESS. */ - if (!err) - err = filemap_write_and_wait(inode->i_mapping); - } + /* Succeeded; write the verity descriptor. */ + err = pagecache_write(inode, desc, desc_size, desc_pos); + if (err) + goto out; - /* If we failed, truncate anything we wrote past i_size. */ - if (desc == NULL || err) - f2fs_truncate(inode); + err = filemap_write_and_wait(inode->i_mapping); + if (err) + goto out; - clear_inode_flag(inode, FI_VERITY_IN_PROGRESS); + err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_VERITY, + F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc), + NULL, XATTR_CREATE); + if (err) + goto out; - if (desc != NULL && !err) { - err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_VERITY, - F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc), - NULL, XATTR_CREATE); - if (!err) { - file_set_verity(inode); - f2fs_set_inode_flags(inode); - f2fs_mark_inode_dirty_sync(inode, true); - } - } + file_set_verity(inode); + f2fs_set_inode_flags(inode); + f2fs_mark_inode_dirty_sync(inode, true); + + return 0; +out: + /* If we failed, truncate anything we wrote past i_size. */ + truncate_inode_pages(inode->i_mapping, inode->i_size); + f2fs_truncate(inode); return err; } -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Yunlei He <heyunlei@hihonor.com> To: chao@kernel.org, jaegeuk@kernel.org, ebiggers@kernel.org Cc: linux-fscrypt@vger.kernel.org, stable@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Subject: [f2fs-dev] [PATCH v2] f2fs: fsverity: Truncate cache pages if set verity failed Date: Mon, 1 Mar 2021 22:15:06 +0800 [thread overview] Message-ID: <20210301141506.6410-1-heyunlei@hihonor.com> (raw) If file enable verity failed, should truncate anything wrote past i_size, including cache pages. Fixes: 95ae251fe828 ("f2fs: add fs-verity support") Cc: <stable@vger.kernel.org> # v5.4+ Signed-off-by: Yunlei He <heyunlei@hihonor.com> --- fs/f2fs/verity.c | 47 +++++++++++++++++++++++++---------------------- 1 file changed, 25 insertions(+), 22 deletions(-) diff --git a/fs/f2fs/verity.c b/fs/f2fs/verity.c index 054ec852b5ea..3aa851affc46 100644 --- a/fs/f2fs/verity.c +++ b/fs/f2fs/verity.c @@ -158,33 +158,36 @@ static int f2fs_end_enable_verity(struct file *filp, const void *desc, .size = cpu_to_le32(desc_size), .pos = cpu_to_le64(desc_pos), }; - int err = 0; + int err; - if (desc != NULL) { - /* Succeeded; write the verity descriptor. */ - err = pagecache_write(inode, desc, desc_size, desc_pos); + clear_inode_flag(inode, FI_VERITY_IN_PROGRESS); + if (!desc) + return 0; - /* Write all pages before clearing FI_VERITY_IN_PROGRESS. */ - if (!err) - err = filemap_write_and_wait(inode->i_mapping); - } + /* Succeeded; write the verity descriptor. */ + err = pagecache_write(inode, desc, desc_size, desc_pos); + if (err) + goto out; - /* If we failed, truncate anything we wrote past i_size. */ - if (desc == NULL || err) - f2fs_truncate(inode); + err = filemap_write_and_wait(inode->i_mapping); + if (err) + goto out; - clear_inode_flag(inode, FI_VERITY_IN_PROGRESS); + err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_VERITY, + F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc), + NULL, XATTR_CREATE); + if (err) + goto out; - if (desc != NULL && !err) { - err = f2fs_setxattr(inode, F2FS_XATTR_INDEX_VERITY, - F2FS_XATTR_NAME_VERITY, &dloc, sizeof(dloc), - NULL, XATTR_CREATE); - if (!err) { - file_set_verity(inode); - f2fs_set_inode_flags(inode); - f2fs_mark_inode_dirty_sync(inode, true); - } - } + file_set_verity(inode); + f2fs_set_inode_flags(inode); + f2fs_mark_inode_dirty_sync(inode, true); + + return 0; +out: + /* If we failed, truncate anything we wrote past i_size. */ + truncate_inode_pages(inode->i_mapping, inode->i_size); + f2fs_truncate(inode); return err; } -- 2.17.1 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
next reply other threads:[~2021-03-01 14:18 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-01 14:15 Yunlei He [this message] 2021-03-01 14:15 ` [f2fs-dev] [PATCH v2] f2fs: fsverity: Truncate cache pages if set verity failed Yunlei He 2021-03-01 18:38 ` Eric Biggers 2021-03-01 18:38 ` [f2fs-dev] " Eric Biggers -- strict thread matches above, loose matches on Subject: below -- 2021-03-01 14:04 [f2fs-dev][PATCH " Yunlei He 2021-03-01 14:20 ` Greg KH
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