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Groups > linux.kernel > #1505865
| From | Richard Weinberger <richard@nod.at> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 13/26] ubifs: Enforce crypto policy in mmap |
| Date | 2016-10-21 15:00 +0200 |
| Message-ID | <suHAu-5DG-19@gated-at.bofh.it> (permalink) |
| References | <suHqN-5zP-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
We need this extra check in mmap because a process could
gain an already opened fd.
Signed-off-by: Richard Weinberger <richard@nod.at>
---
fs/ubifs/file.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index fc79278969e5..bd0049788e24 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1594,6 +1594,15 @@ static const struct vm_operations_struct ubifs_file_vm_ops = {
static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
{
int err;
+ struct inode *inode = file->f_mapping->host;
+
+ if (ubifs_crypt_is_encrypted(inode)) {
+ err = fscrypt_get_encryption_info(inode);
+ if (err)
+ return -EACCES;
+ if (!fscrypt_has_encryption_key(inode))
+ return -ENOKEY;
+ }
err = generic_file_mmap(file, vma);
if (err)
--
2.7.3
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[PATCH 00/26] UBIFS File Encryption Richard Weinberger <richard@nod.at> - 2016-10-21 14:50 +0200
[PATCH 26/26] ubifs: Raise write version to 5 Richard Weinberger <richard@nod.at> - 2016-10-21 14:50 +0200
Re: [PATCH 26/26] ubifs: Raise write version to 5 Michael Halcrow <mhalcrow@google.com> - 2016-10-21 19:40 +0200
Re: [PATCH 26/26] ubifs: Raise write version to 5 Theodore Ts'o <tytso@mit.edu> - 2016-10-21 19:50 +0200
Re: [PATCH 26/26] ubifs: Raise write version to 5 Eric Biggers <ebiggers@google.com> - 2016-10-21 20:20 +0200
Re: [PATCH 26/26] ubifs: Raise write version to 5 Theodore Ts'o <tytso@mit.edu> - 2016-10-22 00:40 +0200
Re: [PATCH 26/26] ubifs: Raise write version to 5 Richard Weinberger <richard@nod.at> - 2016-10-24 09:10 +0200
[PATCH 05/26] ubifs: Define UBIFS crypto context xattr Richard Weinberger <richard@nod.at> - 2016-10-21 14:50 +0200
[PATCH 10/26] ubifs: Enforce crypto policy in ->link and ->rename Richard Weinberger <richard@nod.at> - 2016-10-21 14:50 +0200
[PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Michael Halcrow <mhalcrow@google.com> - 2016-10-21 19:20 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Richard Weinberger <richard@nod.at> - 2016-10-21 19:30 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Michael Halcrow <mhalcrow@google.com> - 2016-10-21 20:00 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Richard Weinberger <richard@nod.at> - 2016-10-21 20:30 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Eric Biggers <ebiggers@google.com> - 2016-10-21 20:30 +0200
Re: [PATCH 15/26] ubifs: Implement encrypt/decrypt for all IO Richard Weinberger <richard@nod.at> - 2016-10-24 09:10 +0200
[PATCH 07/26] ubifs: Massage ubifs_listxattr() for encryption context Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 13/26] ubifs: Enforce crypto policy in mmap Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 11/26] ubifs: Preload crypto context in ->lookup() Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 21/26] ubifs: Rename tnc_read_node_nm Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 12/26] ubifs: Massage assert in ubifs_xattr_set() wrt. fscrypto Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 02/26] fscrypto: Constify struct inode pointer Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
Re: [PATCH 02/26] fscrypto: Constify struct inode pointer Theodore Ts'o <tytso@mit.edu> - 2016-10-21 17:00 +0200
Re: [PATCH 02/26] fscrypto: Constify struct inode pointer Richard Weinberger <richard@nod.at> - 2016-10-21 17:20 +0200
[PATCH 22/26] ubifs: Add full hash lookup support Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 24/26] ubifs: Implement UBIFS_FLG_DOUBLE_HASH Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 25/26] ubifs: Implement UBIFS_FLG_ENCRYPTION Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
Re: [PATCH 25/26] ubifs: Implement UBIFS_FLG_ENCRYPTION Eric Biggers <ebiggers@google.com> - 2016-10-21 20:40 +0200
Re: [PATCH 25/26] ubifs: Implement UBIFS_FLG_ENCRYPTION Richard Weinberger <richard@nod.at> - 2016-10-24 09:00 +0200
Re: [PATCH 25/26] ubifs: Implement UBIFS_FLG_ENCRYPTION Theodore Ts'o <tytso@mit.edu> - 2016-10-24 15:50 +0200
[PATCH 17/26] ubifs: Make r5 hash binary string aware Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 20/26] ubifs: Add support for encrypted symlinks Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
Re: [PATCH 20/26] ubifs: Add support for encrypted symlinks Eric Biggers <ebiggers@google.com> - 2016-10-21 20:50 +0200
Re: [PATCH 20/26] ubifs: Add support for encrypted symlinks Richard Weinberger <richard@nod.at> - 2016-10-24 09:00 +0200
[PATCH 23/26] ubifs: Use a random number for cookies Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 08/26] ubifs: Implement directory open operation Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 14/26] ubifs: Introduce new data node field, compr_size Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 16/26] ubifs: Relax checks in ubifs_validate_entry() Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 18/26] ubifs: Constify struct inode pointer in ubifs_crypt_is_encrypted() Richard Weinberger <richard@nod.at> - 2016-10-21 15:00 +0200
[PATCH 06/26] ubifs: Add skeleton for fscrypto Richard Weinberger <richard@nod.at> - 2016-10-21 15:10 +0200
Re: [PATCH 01/26] fscrypto: Add buffer operations Christoph Hellwig <hch@infradead.org> - 2016-10-21 15:10 +0200
Re: [PATCH 01/26] fscrypto: Add buffer operations Richard Weinberger <richard@nod.at> - 2016-10-21 15:20 +0200
Re: [PATCH 01/26] fscrypto: Add buffer operations Christoph Hellwig <hch@infradead.org> - 2016-10-21 15:30 +0200
Re: [PATCH 01/26] fscrypto: Add buffer operations Theodore Ts'o <tytso@mit.edu> - 2016-10-21 17:20 +0200
Re: [PATCH 01/26] fscrypto: Add buffer operations Richard Weinberger <richard@nod.at> - 2016-10-24 09:10 +0200
[PATCH 09/26] ubifs: Implement file open operation Richard Weinberger <richard@nod.at> - 2016-10-21 15:10 +0200
[PATCH 03/26] ubifs: Export ubifs_check_dir_empty() Richard Weinberger <richard@nod.at> - 2016-10-21 15:10 +0200
[PATCH 04/26] ubifs: Export xattr get and set functions Richard Weinberger <richard@nod.at> - 2016-10-21 15:10 +0200
[PATCH 01/26] fscrypto: Add buffer operations Richard Weinberger <richard@nod.at> - 2016-10-21 15:10 +0200
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