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make generic_acl slightly more generic

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Now that we cache the ACL pointers in the generic inode all the generic_acl
cruft can go away and generic_acl.c can directly implement xattr handlers
dealing with the full Posix ACL semantics for in-memory filesystems.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2009-11-03 16:44:44 +01:00 • committed by Al Viro
commit 1c7c474c31
6 changed files with 109 additions and 257 deletions
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17
mm/shmem.c
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@ -41,6 +41,7 @@ static struct vfsmount *shm_mnt;
#include <linux/xattr.h>
#include <linux/exportfs.h>
#include <linux/posix_acl.h>
#include <linux/generic_acl.h>
#include <linux/mman.h>
#include <linux/string.h>
@ -809,7 +810,7 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr)
error = inode_setattr(inode, attr);
#ifdef CONFIG_TMPFS_POSIX_ACL
if (!error && (attr->ia_valid & ATTR_MODE))
error = generic_acl_chmod(inode, &shmem_acl_ops);
error = generic_acl_chmod(inode);
#endif
if (page)
page_cache_release(page);
@ -1823,11 +1824,13 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
return error;
}
}
error = shmem_acl_init(inode, dir);
#ifdef CONFIG_TMPFS_POSIX_ACL
error = generic_acl_init(inode, dir);
if (error) {
iput(inode);
return error;
}
#endif
if (dir->i_mode & S_ISGID) {
inode->i_gid = dir->i_gid;
if (S_ISDIR(mode))
@ -2074,8 +2077,8 @@ static struct xattr_handler shmem_xattr_security_handler = {
};
static struct xattr_handler *shmem_xattr_handlers[] = {
&shmem_xattr_acl_access_handler,
&shmem_xattr_acl_default_handler,
&generic_acl_access_handler,
&generic_acl_default_handler,
&shmem_xattr_security_handler,
NULL
};
@ -2454,7 +2457,7 @@ static const struct inode_operations shmem_inode_operations = {
.getxattr = generic_getxattr,
.listxattr = generic_listxattr,
.removexattr = generic_removexattr,
.check_acl = shmem_check_acl,
.check_acl = generic_check_acl,
#endif
};
@ -2477,7 +2480,7 @@ static const struct inode_operations shmem_dir_inode_operations = {
.getxattr = generic_getxattr,
.listxattr = generic_listxattr,
.removexattr = generic_removexattr,
.check_acl = shmem_check_acl,
.check_acl = generic_check_acl,
#endif
};
@ -2488,7 +2491,7 @@ static const struct inode_operations shmem_special_inode_operations = {
.getxattr = generic_getxattr,
.listxattr = generic_listxattr,
.removexattr = generic_removexattr,
.check_acl = shmem_check_acl,
.check_acl = generic_check_acl,
#endif
};