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| author | Eric W. Biederman <ebiederm@xmission.com> | 2013-01-31 04:36:06 +0100 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2013-02-13 15:00:54 +0100 |
| commit | 17499e332962e495b3ee2e5507e09b853ed6f607 (patch) | |
| tree | b3765f8203c071367f56baf547dad104c6d9297d /fs | |
| parent | coda: Restrict coda messages to the initial user namespace (diff) | |
| download | linux-17499e332962e495b3ee2e5507e09b853ed6f607.tar.xz linux-17499e332962e495b3ee2e5507e09b853ed6f607.zip | |
coda: Cache permisions in struct coda_inode_info in a kuid_t.
- Change c_uid in struct coda_indoe_info from a vuid_t to a kuid_t.
- Initialize c_uid to GLOBAL_ROOT_UID instead of 0.
- Use uid_eq to compare cached kuids.
Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/coda/cache.c | 4 | ||||
| -rw-r--r-- | fs/coda/coda_fs_i.h | 2 | ||||
| -rw-r--r-- | fs/coda/inode.c | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/fs/coda/cache.c b/fs/coda/cache.c index 958ae0e0ff8c..1da168c61d35 100644 --- a/fs/coda/cache.c +++ b/fs/coda/cache.c @@ -33,7 +33,7 @@ void coda_cache_enter(struct inode *inode, int mask) spin_lock(&cii->c_lock); cii->c_cached_epoch = atomic_read(&permission_epoch); - if (cii->c_uid != current_fsuid()) { + if (!uid_eq(cii->c_uid, current_fsuid())) { cii->c_uid = current_fsuid(); cii->c_cached_perm = mask; } else @@ -65,7 +65,7 @@ int coda_cache_check(struct inode *inode, int mask) spin_lock(&cii->c_lock); hit = (mask & cii->c_cached_perm) == mask && - cii->c_uid == current_fsuid() && + uid_eq(cii->c_uid, current_fsuid()) && cii->c_cached_epoch == atomic_read(&permission_epoch); spin_unlock(&cii->c_lock); diff --git a/fs/coda/coda_fs_i.h b/fs/coda/coda_fs_i.h index b24fdfd8a3f0..c64075213218 100644 --- a/fs/coda/coda_fs_i.h +++ b/fs/coda/coda_fs_i.h @@ -25,7 +25,7 @@ struct coda_inode_info { u_short c_flags; /* flags (see below) */ unsigned int c_mapcount; /* nr of times this inode is mapped */ unsigned int c_cached_epoch; /* epoch for cached permissions */ - vuid_t c_uid; /* fsuid for cached permissions */ + kuid_t c_uid; /* fsuid for cached permissions */ unsigned int c_cached_perm; /* cached access permissions */ spinlock_t c_lock; struct inode vfs_inode; diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 77bbaf4666a7..cf674e9179a3 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -49,7 +49,7 @@ static struct inode *coda_alloc_inode(struct super_block *sb) return NULL; memset(&ei->c_fid, 0, sizeof(struct CodaFid)); ei->c_flags = 0; - ei->c_uid = 0; + ei->c_uid = GLOBAL_ROOT_UID; ei->c_cached_perm = 0; spin_lock_init(&ei->c_lock); return &ei->vfs_inode; |