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gfid-access: virtual access to filesystem through gfid path

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BUG: 952029
Change-Id: I7405d473d369a4a951836eceda4faccbad19ce0e
Signed-off-by: Amar Tumballi <amarts@redhat.com>
Reviewed-on: http://review.gluster.org/5497
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
This commit is contained in:
Amar Tumballi 2013-07-31 22:57:12 +05:30 committed by Anand Avati
parent df9bfff8ea
commit 9cef281090
7 changed files with 1315 additions and 1 deletions
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2
configure.ac
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@ -119,6 +119,8 @@ AC_CONFIG_FILES([Makefile
xlators/features/index/src/Makefile
xlators/features/protect/Makefile
xlators/features/protect/src/Makefile
xlators/features/gfid-access/Makefile
xlators/features/gfid-access/src/Makefile
xlators/playground/Makefile
xlators/playground/template/Makefile
xlators/playground/template/src/Makefile

2
xlators/features/Makefile.am
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@ -1,4 +1,4 @@
SUBDIRS = locks quota read-only mac-compat quiesce marker index \
protect changelog $(GLUPY_SUBDIR) # trash path-converter # filter
protect changelog gfid-access $(GLUPY_SUBDIR) # trash path-converter # filter
CLEANFILES =

1
xlators/features/gfid-access/Makefile.am Normal file
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@ -0,0 +1 @@
SUBDIRS = src

15
xlators/features/gfid-access/src/Makefile.am Normal file
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@ -0,0 +1,15 @@
xlator_LTLIBRARIES = gfid-access.la
xlatordir = $(libdir)/glusterfs/$(PACKAGE_VERSION)/xlator/features
gfid_access_la_LDFLAGS = -module -avoid-version
gfid_access_la_SOURCES = gfid-access.c
gfid_access_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la
noinst_HEADERS = gfid-access.h gfid-access-mem-types.h
AM_CPPFLAGS = $(GF_CPPFLAGS) -I$(top_srcdir)/libglusterfs/src
AM_CFLAGS = -Wall $(GF_CFLAGS)
CLEANFILES =

23
xlators/features/gfid-access/src/gfid-access-mem-types.h Normal file
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@ -0,0 +1,23 @@
/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef _GFID_ACCESS_MEM_TYPES_H
#define _GFID_ACCESS_MEM_TYPES_H
#include "mem-types.h"
enum gf_changelog_mem_types {
gf_gfid_access_mt_priv_t = gf_common_mt_end + 1,
gf_gfid_access_mt_gfid_t,
gf_gfid_access_mt_end
};
#endif

1145
xlators/features/gfid-access/src/gfid-access.c Normal file
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128
xlators/features/gfid-access/src/gfid-access.h Normal file
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@ -0,0 +1,128 @@
/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef __GFID_ACCESS_H__
#define __GFID_ACCESS_H__
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "glusterfs.h"
#include "logging.h"
#include "dict.h"
#include "xlator.h"
#include "defaults.h"
#include "gfid-access-mem-types.h"
#define UUID_CANONICAL_FORM_LEN 36
#define GF_FUSE_AUX_GFID_NEWFILE "glusterfs.gfid.newfile"
#define GF_FUSE_AUX_GFID_HEAL "glusterfs.gfid.heal"
#define GF_GFID_KEY "GLUSTERFS_GFID"
#define GF_GFID_DIR ".gfid"
#define GF_AUX_GFID 0xd
#define GFID_ACCESS_GET_VALID_DIR_INODE(x,l,unref,lbl) do { \
int ret = 0; \
uint64_t value = 0; \
inode_t *tmp_inode = NULL; \
\
/* if its an entry operation, on the virtual */ \
/* directory inode as parent, we need to handle */ \
/* it properly */ \
if (l->parent) { \
ret = inode_ctx_get (l->parent, x, &value); \
if (ret) \
goto lbl; \
tmp_inode = (inode_t *)value; \
unref = inode_ref (tmp_inode); \
l->parent = tmp_inode; \
/* if parent is virtual, no need to handle */ \
/* loc->inode */ \
break; \
} \
\
/* if its an inode operation, on the virtual */ \
/* directory inode itself, we need to handle */ \
/* it properly */ \
if (l->inode) { \
ret = inode_ctx_get (l->inode, x, &value); \
if (ret) \
goto lbl; \
tmp_inode = (inode_t *)value; \
unref = inode_ref (tmp_inode); \
l->inode = tmp_inode; \
} \
\
} while (0)
#define GFID_ACCESS_ENTRY_OP_CHECK(loc,err,lbl) do { \
/* need to check if the lookup is on virtual dir */ \
if ((loc->name && !strcmp (GF_GFID_DIR, loc->name)) && \
((loc->parent && \
__is_root_gfid (loc->parent->gfid)) || \
__is_root_gfid (loc->pargfid))) { \
err = EEXIST; \
goto lbl; \
} \
\
/* now, check if the lookup() is on an existing */ \
/* entry, but on gfid-path */ \
if ((loc->parent && \
__is_gfid_access_dir (loc->parent->gfid)) || \
__is_gfid_access_dir (loc->pargfid)) { \
err = EPERM; \
goto lbl; \
} \
} while (0)
typedef struct {
unsigned int uid;
unsigned int gid;
char gfid[UUID_CANONICAL_FORM_LEN + 1];
unsigned int st_mode;
char *bname;
union {
struct _symlink_in {
char *linkpath;
} __attribute__ ((__packed__)) symlink;
struct _mknod_in {
unsigned int mode;
unsigned int rdev;
unsigned int umask;
} __attribute__ ((__packed__)) mknod;
struct _mkdir_in {
unsigned int mode;
unsigned int umask;
} __attribute__ ((__packed__)) mkdir;
} __attribute__ ((__packed__)) args;
} __attribute__((__packed__)) ga_newfile_args_t;
typedef struct {
char gfid[UUID_CANONICAL_FORM_LEN + 1];
char *bname; /* a null terminated basename */
} __attribute__((__packed__)) ga_heal_args_t;
struct ga_private {
/* root inode's stbuf */
struct iatt root_stbuf;
struct iatt gfiddir_stbuf;
struct mem_pool *newfile_args_pool;
struct mem_pool *heal_args_pool;
};
typedef struct ga_private ga_private_t;
#endif /* __GFID_ACCESS_H__ */