diff options
Diffstat (limited to 'fs/jfs/acl.c')
-rw-r--r-- | fs/jfs/acl.c | 105 |
1 files changed, 42 insertions, 63 deletions
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index d254d6d35995..e973b85d6afd 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -72,7 +72,7 @@ struct posix_acl *jfs_get_acl(struct inode *inode, int type) return acl; } -static int jfs_set_acl(tid_t tid, struct inode *inode, int type, +static int __jfs_set_acl(tid_t tid, struct inode *inode, int type, struct posix_acl *acl) { char *ea_name; @@ -80,21 +80,22 @@ static int jfs_set_acl(tid_t tid, struct inode *inode, int type, int size = 0; char *value = NULL; - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - switch(type) { - case ACL_TYPE_ACCESS: - ea_name = POSIX_ACL_XATTR_ACCESS; - break; - case ACL_TYPE_DEFAULT: - ea_name = POSIX_ACL_XATTR_DEFAULT; - if (!S_ISDIR(inode->i_mode)) - return acl ? -EACCES : 0; - break; - default: - return -EINVAL; + switch (type) { + case ACL_TYPE_ACCESS: + ea_name = POSIX_ACL_XATTR_ACCESS; + rc = posix_acl_equiv_mode(acl, &inode->i_mode); + if (rc < 0) + return rc; + if (rc == 0) + acl = NULL; + break; + case ACL_TYPE_DEFAULT: + ea_name = POSIX_ACL_XATTR_DEFAULT; + break; + default: + return -EINVAL; } + if (acl) { size = posix_acl_xattr_size(acl->a_count); value = kmalloc(size, GFP_KERNEL); @@ -114,65 +115,43 @@ out: return rc; } +int jfs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int rc; + tid_t tid; + + tid = txBegin(inode->i_sb, 0); + mutex_lock(&JFS_IP(inode)->commit_mutex); + rc = __jfs_set_acl(tid, inode, type, acl); + if (!rc) + rc = txCommit(tid, 1, &inode, 0); + txEnd(tid); + mutex_unlock(&JFS_IP(inode)->commit_mutex); + return rc; +} + int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir) { - struct posix_acl *acl = NULL; + struct posix_acl *default_acl, *acl; int rc = 0; - if (S_ISLNK(inode->i_mode)) - return 0; + rc = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); + if (rc) + return rc; - acl = jfs_get_acl(dir, ACL_TYPE_DEFAULT); - if (IS_ERR(acl)) - return PTR_ERR(acl); + if (default_acl) { + rc = __jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, default_acl); + posix_acl_release(default_acl); + } if (acl) { - if (S_ISDIR(inode->i_mode)) { - rc = jfs_set_acl(tid, inode, ACL_TYPE_DEFAULT, acl); - if (rc) - goto cleanup; - } - rc = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); - if (rc < 0) - goto cleanup; /* posix_acl_release(NULL) is no-op */ - if (rc > 0) - rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); -cleanup: + if (!rc) + rc = __jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); posix_acl_release(acl); - } else - inode->i_mode &= ~current_umask(); + } JFS_IP(inode)->mode2 = (JFS_IP(inode)->mode2 & 0xffff0000) | inode->i_mode; return rc; } - -int jfs_acl_chmod(struct inode *inode) -{ - struct posix_acl *acl; - int rc; - tid_t tid; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - acl = jfs_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - - rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (rc) - return rc; - - tid = txBegin(inode->i_sb, 0); - mutex_lock(&JFS_IP(inode)->commit_mutex); - rc = jfs_set_acl(tid, inode, ACL_TYPE_ACCESS, acl); - if (!rc) - rc = txCommit(tid, 1, &inode, 0); - txEnd(tid); - mutex_unlock(&JFS_IP(inode)->commit_mutex); - - posix_acl_release(acl); - return rc; -} |