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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/nfs_common
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/nfs_common')
-rw-r--r--ANDROID_3.4.5/fs/nfs_common/Makefile7
-rw-r--r--ANDROID_3.4.5/fs/nfs_common/nfsacl.c286
2 files changed, 0 insertions, 293 deletions
diff --git a/ANDROID_3.4.5/fs/nfs_common/Makefile b/ANDROID_3.4.5/fs/nfs_common/Makefile
deleted file mode 100644
index f689ed82..00000000
--- a/ANDROID_3.4.5/fs/nfs_common/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for Linux filesystem routines that are shared by client and server.
-#
-
-obj-$(CONFIG_NFS_ACL_SUPPORT) += nfs_acl.o
-
-nfs_acl-objs := nfsacl.o
diff --git a/ANDROID_3.4.5/fs/nfs_common/nfsacl.c b/ANDROID_3.4.5/fs/nfs_common/nfsacl.c
deleted file mode 100644
index 6940439b..00000000
--- a/ANDROID_3.4.5/fs/nfs_common/nfsacl.c
+++ /dev/null
@@ -1,286 +0,0 @@
-/*
- * fs/nfs_common/nfsacl.c
- *
- * Copyright (C) 2002-2003 Andreas Gruenbacher <agruen@suse.de>
- */
-
-/*
- * The Solaris nfsacl protocol represents some ACLs slightly differently
- * than POSIX 1003.1e draft 17 does (and we do):
- *
- * - Minimal ACLs always have an ACL_MASK entry, so they have
- * four instead of three entries.
- * - The ACL_MASK entry in such minimal ACLs always has the same
- * permissions as the ACL_GROUP_OBJ entry. (In extended ACLs
- * the ACL_MASK and ACL_GROUP_OBJ entries may differ.)
- * - The identifier fields of the ACL_USER_OBJ and ACL_GROUP_OBJ
- * entries contain the identifiers of the owner and owning group.
- * (In POSIX ACLs we always set them to ACL_UNDEFINED_ID).
- * - ACL entries in the kernel are kept sorted in ascending order
- * of (e_tag, e_id). Solaris ACLs are unsorted.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/gfp.h>
-#include <linux/sunrpc/xdr.h>
-#include <linux/nfsacl.h>
-#include <linux/nfs3.h>
-#include <linux/sort.h>
-
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL_GPL(nfsacl_encode);
-EXPORT_SYMBOL_GPL(nfsacl_decode);
-
-struct nfsacl_encode_desc {
- struct xdr_array2_desc desc;
- unsigned int count;
- struct posix_acl *acl;
- int typeflag;
- uid_t uid;
- gid_t gid;
-};
-
-struct nfsacl_simple_acl {
- struct posix_acl acl;
- struct posix_acl_entry ace[4];
-};
-
-static int
-xdr_nfsace_encode(struct xdr_array2_desc *desc, void *elem)
-{
- struct nfsacl_encode_desc *nfsacl_desc =
- (struct nfsacl_encode_desc *) desc;
- __be32 *p = elem;
-
- struct posix_acl_entry *entry =
- &nfsacl_desc->acl->a_entries[nfsacl_desc->count++];
-
- *p++ = htonl(entry->e_tag | nfsacl_desc->typeflag);
- switch(entry->e_tag) {
- case ACL_USER_OBJ:
- *p++ = htonl(nfsacl_desc->uid);
- break;
- case ACL_GROUP_OBJ:
- *p++ = htonl(nfsacl_desc->gid);
- break;
- case ACL_USER:
- case ACL_GROUP:
- *p++ = htonl(entry->e_id);
- break;
- default: /* Solaris depends on that! */
- *p++ = 0;
- break;
- }
- *p++ = htonl(entry->e_perm & S_IRWXO);
- return 0;
-}
-
-/**
- * nfsacl_encode - Encode an NFSv3 ACL
- *
- * @buf: destination xdr_buf to contain XDR encoded ACL
- * @base: byte offset in xdr_buf where XDR'd ACL begins
- * @inode: inode of file whose ACL this is
- * @acl: posix_acl to encode
- * @encode_entries: whether to encode ACEs as well
- * @typeflag: ACL type: NFS_ACL_DEFAULT or zero
- *
- * Returns size of encoded ACL in bytes or a negative errno value.
- */
-int nfsacl_encode(struct xdr_buf *buf, unsigned int base, struct inode *inode,
- struct posix_acl *acl, int encode_entries, int typeflag)
-{
- int entries = (acl && acl->a_count) ? max_t(int, acl->a_count, 4) : 0;
- struct nfsacl_encode_desc nfsacl_desc = {
- .desc = {
- .elem_size = 12,
- .array_len = encode_entries ? entries : 0,
- .xcode = xdr_nfsace_encode,
- },
- .acl = acl,
- .typeflag = typeflag,
- .uid = inode->i_uid,
- .gid = inode->i_gid,
- };
- struct nfsacl_simple_acl aclbuf;
- int err;
-
- if (entries > NFS_ACL_MAX_ENTRIES ||
- xdr_encode_word(buf, base, entries))
- return -EINVAL;
- if (encode_entries && acl && acl->a_count == 3) {
- struct posix_acl *acl2 = &aclbuf.acl;
-
- /* Avoid the use of posix_acl_alloc(). nfsacl_encode() is
- * invoked in contexts where a memory allocation failure is
- * fatal. Fortunately this fake ACL is small enough to
- * construct on the stack. */
- posix_acl_init(acl2, 4);
-
- /* Insert entries in canonical order: other orders seem
- to confuse Solaris VxFS. */
- acl2->a_entries[0] = acl->a_entries[0]; /* ACL_USER_OBJ */
- acl2->a_entries[1] = acl->a_entries[1]; /* ACL_GROUP_OBJ */
- acl2->a_entries[2] = acl->a_entries[1]; /* ACL_MASK */
- acl2->a_entries[2].e_tag = ACL_MASK;
- acl2->a_entries[3] = acl->a_entries[2]; /* ACL_OTHER */
- nfsacl_desc.acl = acl2;
- }
- err = xdr_encode_array2(buf, base + 4, &nfsacl_desc.desc);
- if (!err)
- err = 8 + nfsacl_desc.desc.elem_size *
- nfsacl_desc.desc.array_len;
- return err;
-}
-
-struct nfsacl_decode_desc {
- struct xdr_array2_desc desc;
- unsigned int count;
- struct posix_acl *acl;
-};
-
-static int
-xdr_nfsace_decode(struct xdr_array2_desc *desc, void *elem)
-{
- struct nfsacl_decode_desc *nfsacl_desc =
- (struct nfsacl_decode_desc *) desc;
- __be32 *p = elem;
- struct posix_acl_entry *entry;
-
- if (!nfsacl_desc->acl) {
- if (desc->array_len > NFS_ACL_MAX_ENTRIES)
- return -EINVAL;
- nfsacl_desc->acl = posix_acl_alloc(desc->array_len, GFP_KERNEL);
- if (!nfsacl_desc->acl)
- return -ENOMEM;
- nfsacl_desc->count = 0;
- }
-
- entry = &nfsacl_desc->acl->a_entries[nfsacl_desc->count++];
- entry->e_tag = ntohl(*p++) & ~NFS_ACL_DEFAULT;
- entry->e_id = ntohl(*p++);
- entry->e_perm = ntohl(*p++);
-
- switch(entry->e_tag) {
- case ACL_USER_OBJ:
- case ACL_USER:
- case ACL_GROUP_OBJ:
- case ACL_GROUP:
- case ACL_OTHER:
- if (entry->e_perm & ~S_IRWXO)
- return -EINVAL;
- break;
- case ACL_MASK:
- /* Solaris sometimes sets additional bits in the mask */
- entry->e_perm &= S_IRWXO;
- break;
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int
-cmp_acl_entry(const void *x, const void *y)
-{
- const struct posix_acl_entry *a = x, *b = y;
-
- if (a->e_tag != b->e_tag)
- return a->e_tag - b->e_tag;
- else if (a->e_id > b->e_id)
- return 1;
- else if (a->e_id < b->e_id)
- return -1;
- else
- return 0;
-}
-
-/*
- * Convert from a Solaris ACL to a POSIX 1003.1e draft 17 ACL.
- */
-static int
-posix_acl_from_nfsacl(struct posix_acl *acl)
-{
- struct posix_acl_entry *pa, *pe,
- *group_obj = NULL, *mask = NULL;
-
- if (!acl)
- return 0;
-
- sort(acl->a_entries, acl->a_count, sizeof(struct posix_acl_entry),
- cmp_acl_entry, NULL);
-
- /* Clear undefined identifier fields and find the ACL_GROUP_OBJ
- and ACL_MASK entries. */
- FOREACH_ACL_ENTRY(pa, acl, pe) {
- switch(pa->e_tag) {
- case ACL_USER_OBJ:
- pa->e_id = ACL_UNDEFINED_ID;
- break;
- case ACL_GROUP_OBJ:
- pa->e_id = ACL_UNDEFINED_ID;
- group_obj = pa;
- break;
- case ACL_MASK:
- mask = pa;
- /* fall through */
- case ACL_OTHER:
- pa->e_id = ACL_UNDEFINED_ID;
- break;
- }
- }
- if (acl->a_count == 4 && group_obj && mask &&
- mask->e_perm == group_obj->e_perm) {
- /* remove bogus ACL_MASK entry */
- memmove(mask, mask+1, (3 - (mask - acl->a_entries)) *
- sizeof(struct posix_acl_entry));
- acl->a_count = 3;
- }
- return 0;
-}
-
-/**
- * nfsacl_decode - Decode an NFSv3 ACL
- *
- * @buf: xdr_buf containing XDR'd ACL data to decode
- * @base: byte offset in xdr_buf where XDR'd ACL begins
- * @aclcnt: count of ACEs in decoded posix_acl
- * @pacl: buffer in which to place decoded posix_acl
- *
- * Returns the length of the decoded ACL in bytes, or a negative errno value.
- */
-int nfsacl_decode(struct xdr_buf *buf, unsigned int base, unsigned int *aclcnt,
- struct posix_acl **pacl)
-{
- struct nfsacl_decode_desc nfsacl_desc = {
- .desc = {
- .elem_size = 12,
- .xcode = pacl ? xdr_nfsace_decode : NULL,
- },
- };
- u32 entries;
- int err;
-
- if (xdr_decode_word(buf, base, &entries) ||
- entries > NFS_ACL_MAX_ENTRIES)
- return -EINVAL;
- nfsacl_desc.desc.array_maxlen = entries;
- err = xdr_decode_array2(buf, base + 4, &nfsacl_desc.desc);
- if (err)
- return err;
- if (pacl) {
- if (entries != nfsacl_desc.desc.array_len ||
- posix_acl_from_nfsacl(nfsacl_desc.acl) != 0) {
- posix_acl_release(nfsacl_desc.acl);
- return -EINVAL;
- }
- *pacl = nfsacl_desc.acl;
- }
- if (aclcnt)
- *aclcnt = entries;
- return 8 + nfsacl_desc.desc.elem_size *
- nfsacl_desc.desc.array_len;
-}