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| author | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-16 06:27:40 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-12-16 12:16:47 -0500 |
| commit | b65a9cfc2c38eebc33533280b8ad5841caee8b6e (patch) | |
| tree | d6e5b713615cc5e65c900162ab09235ae4847909 /fs/namei.c | |
| parent | 0552f879d45cecc35d8e372a591fc5ed863bca58 (diff) | |
| download | linux-rpi-b65a9cfc2c38eebc33533280b8ad5841caee8b6e.tar.gz linux-rpi-b65a9cfc2c38eebc33533280b8ad5841caee8b6e.tar.bz2 linux-rpi-b65a9cfc2c38eebc33533280b8ad5841caee8b6e.zip | |
Untangling ima mess, part 2: deal with counters
* do ima_get_count() in __dentry_open()
* stop doing that in followups
* move ima_path_check() to right after nameidata_to_filp()
* don't bump counters on it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 56 |
1 files changed, 25 insertions, 31 deletions
diff --git a/fs/namei.c b/fs/namei.c index 0f0fcccab19f..c530e5d32f12 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1461,14 +1461,7 @@ int may_open(struct path *path, int acc_mode, int flag) /* * Ensure there are no outstanding leases on the file. */ - error = break_lease(inode, flag); - if (error) - return error; - - return ima_path_check(path, acc_mode ? - acc_mode & (MAY_READ | MAY_WRITE | MAY_EXEC) : - ACC_MODE(flag) & (MAY_READ | MAY_WRITE), - IMA_COUNT_UPDATE); + return break_lease(inode, flag); } static int handle_truncate(struct path *path) @@ -1688,13 +1681,17 @@ do_last: goto exit; } filp = nameidata_to_filp(&nd, open_flag); - if (IS_ERR(filp)) - ima_counts_put(&nd.path, - acc_mode & (MAY_READ | MAY_WRITE | - MAY_EXEC)); mnt_drop_write(nd.path.mnt); if (nd.root.mnt) path_put(&nd.root); + if (!IS_ERR(filp)) { + error = ima_path_check(&filp->f_path, filp->f_mode & + (MAY_READ | MAY_WRITE | MAY_EXEC), 0); + if (error) { + fput(filp); + filp = ERR_PTR(error); + } + } return filp; } @@ -1748,27 +1745,24 @@ ok: goto exit; } filp = nameidata_to_filp(&nd, open_flag); - if (IS_ERR(filp)) { - ima_counts_put(&nd.path, - acc_mode & (MAY_READ | MAY_WRITE | MAY_EXEC)); - if (will_truncate) - mnt_drop_write(nd.path.mnt); - if (nd.root.mnt) - path_put(&nd.root); - return filp; - } - - if (acc_mode & MAY_WRITE) - vfs_dq_init(nd.path.dentry->d_inode); - - if (will_truncate) { - error = handle_truncate(&nd.path); + if (!IS_ERR(filp)) { + error = ima_path_check(&filp->f_path, filp->f_mode & + (MAY_READ | MAY_WRITE | MAY_EXEC), 0); if (error) { - mnt_drop_write(nd.path.mnt); fput(filp); - if (nd.root.mnt) - path_put(&nd.root); - return ERR_PTR(error); + filp = ERR_PTR(error); + } + } + if (!IS_ERR(filp)) { + if (acc_mode & MAY_WRITE) + vfs_dq_init(nd.path.dentry->d_inode); + + if (will_truncate) { + error = handle_truncate(&nd.path); + if (error) { + fput(filp); + filp = ERR_PTR(error); + } } } /* |