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| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2010-11-02 10:13:07 -0400 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2011-02-10 07:51:44 -0500 |
| commit | 890275b5eb79e9933d12290473eab9ac38da0051 (patch) | |
| tree | 8fa529a6fdfa7647ed4e14287658b71df8636ddd /fs | |
| parent | a5c96ebf1d71df0c5fb77ab58c9aeb307cf02372 (diff) | |
| download | linux-stable-890275b5eb79e9933d12290473eab9ac38da0051.tar.gz linux-stable-890275b5eb79e9933d12290473eab9ac38da0051.tar.bz2 linux-stable-890275b5eb79e9933d12290473eab9ac38da0051.zip | |
IMA: maintain i_readcount in the VFS layer
ima_counts_get() updated the readcount and invalidated the PCR,
as necessary. Only update the i_readcount in the VFS layer.
Move the PCR invalidation checks to ima_file_check(), where it
belongs.
Maintaining the i_readcount in the VFS layer, will allow other
subsystems to use i_readcount.
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Acked-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/file_table.c | 5 | ||||
| -rw-r--r-- | fs/open.c | 3 |
2 files changed, 6 insertions, 2 deletions
diff --git a/fs/file_table.c b/fs/file_table.c index c3dee381f1b4..0c724deb46f9 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -190,7 +190,8 @@ struct file *alloc_file(struct path *path, fmode_t mode, file_take_write(file); WARN_ON(mnt_clone_write(path->mnt)); } - ima_counts_get(file); + if ((mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) + i_readcount_inc(path->dentry->d_inode); return file; } EXPORT_SYMBOL(alloc_file); @@ -251,6 +252,8 @@ static void __fput(struct file *file) fops_put(file->f_op); put_pid(file->f_owner.pid); file_sb_list_del(file); + if ((file->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) + i_readcount_dec(inode); if (file->f_mode & FMODE_WRITE) drop_file_write_access(file); file->f_path.dentry = NULL; diff --git a/fs/open.c b/fs/open.c index 4197b9ed023d..0d485c50bb95 100644 --- a/fs/open.c +++ b/fs/open.c @@ -688,7 +688,8 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt, if (error) goto cleanup_all; } - ima_counts_get(f); + if ((f->f_mode & (FMODE_READ | FMODE_WRITE)) == FMODE_READ) + i_readcount_inc(inode); f->f_flags &= ~(O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC); |