362 lines
10 KiB
C
362 lines
10 KiB
C
#define FUSE_USE_VERSION 26
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#define _FILE_OFFSET_BITS 64
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#include "pfsxattr.h"
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#include "plibs.h"
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#include "pfsfolder.h"
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#include "pfstasks.h"
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#include <fuse.h>
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#include <errno.h>
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#include <string.h>
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#if IS_DEBUG
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#define psync_fs_set_thread_name() do {psync_thread_name=__FUNCTION__;} while (0)
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#else
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#define psync_fs_set_thread_name() do {} while (0)
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#endif
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// Do we have this in Win?
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#if !defined(P_OS_WINDOWS)
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#include <sys/xattr.h>
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#else
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// No xattr in win.
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// Value get from standard xattr.h
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enum
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{
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XATTR_CREATE = 1, /* set value, fail if attr already exists. */
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#define XATTR_CREATE XATTR_CREATE
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XATTR_REPLACE = 2 /* set value, fail if attr does not exist. */
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#define XATTR_REPLACE XATTR_REPLACE
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};
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#endif
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#ifndef ENODATA
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#define ENODATA 61
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#endif
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#ifndef ENOATTR
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#define ENOATTR ENODATA
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#endif
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#define OBJECT_MULTIPLIER 8
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#define OBJECT_FOLDER 0
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#define OBJECT_FILE 1
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#define OBJECT_TASK 2
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#define OBJECT_STATICFILE 3
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#define folderid_to_objid(id) ((id)*OBJECT_MULTIPLIER+OBJECT_FOLDER)
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#define fileid_to_objid(id) ((id)*OBJECT_MULTIPLIER+OBJECT_FILE)
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#define taskid_to_objid(id) ((id)*OBJECT_MULTIPLIER+OBJECT_TASK)
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#define static_taskid_to_objid(id) ((UINT64_MAX-id+1)*OBJECT_MULTIPLIER+OBJECT_STATICFILE)
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static void delete_object_id(uint64_t oid){
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psync_sql_res *res;
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res=psync_sql_prep_statement("DELETE FROM fsxattr WHERE objectid=?");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_run_free(res);
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}
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void psync_fs_file_deleted(psync_fileid_t fileid){
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delete_object_id(fileid_to_objid(fileid));
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}
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void psync_fs_folder_deleted(psync_folderid_t folderid){
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delete_object_id(folderid_to_objid(folderid));
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}
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void psync_fs_task_deleted(uint64_t taskid){
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delete_object_id(taskid_to_objid(taskid));
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}
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static void update_object_id(uint64_t ooid, uint64_t noid){
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psync_sql_res *res;
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res=psync_sql_prep_statement("UPDATE OR REPLACE fsxattr SET objectid=? WHERE objectid=?");
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psync_sql_bind_uint(res, 1, noid);
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psync_sql_bind_uint(res, 2, ooid);
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psync_sql_run_free(res);
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}
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void psync_fs_task_to_file(uint64_t taskid, psync_fileid_t fileid){
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update_object_id(taskid_to_objid(taskid), fileid_to_objid(fileid));
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}
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void psync_fs_task_to_folder(uint64_t taskid, psync_folderid_t folderid){
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update_object_id(taskid_to_objid(taskid), folderid_to_objid(folderid));
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}
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void psync_fs_static_to_task(uint64_t statictaskid, uint64_t taskid){
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update_object_id(static_taskid_to_objid(statictaskid), taskid_to_objid(taskid));
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}
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void psync_fs_file_to_task(psync_fileid_t fileid, uint64_t taskid){
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update_object_id(fileid_to_objid(fileid), taskid_to_objid(taskid));
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}
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static int64_t xattr_get_object_id_locked(const char *path){
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psync_fspath_t *fspath;
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psync_fstask_folder_t *folder;
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psync_fstask_mkdir_t *mk;
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psync_fstask_creat_t *cr;
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psync_sql_res *res;
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psync_uint_row row;
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int64_t ret;
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int checkfile, checkfolder;
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if (path[1]==0 && path[0]=='/')
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return 0;
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fspath=psync_fsfolder_resolve_path(path);
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if (!fspath){
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debug(D_NOTICE, "path component of %s not found", path);
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return -1;
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}
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checkfile=1;
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checkfolder=1;
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folder=psync_fstask_get_folder_tasks_rdlocked(fspath->folderid);
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if (folder){
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mk=psync_fstask_find_mkdir(folder, fspath->name, 0);
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if (mk){
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psync_free(fspath);
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assertw(mk->folderid!=0);
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if (mk->folderid>0)
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return folderid_to_objid(mk->folderid);
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else
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return taskid_to_objid(-mk->folderid);
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}
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cr=psync_fstask_find_creat(folder, fspath->name, 0);
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if (cr){
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psync_free(fspath);
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if (cr->fileid>0)
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return fileid_to_objid(cr->fileid);
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else if (cr->fileid==0)
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return static_taskid_to_objid(cr->taskid);
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else{
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res=psync_sql_query_nolock("SELECT type, fileid FROM fstask WHERE id=?");
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psync_sql_bind_uint(res, 1, -cr->fileid);
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if ((row=psync_sql_fetch_rowint(res))){
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if (row[0]==PSYNC_FS_TASK_CREAT)
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ret=taskid_to_objid(-cr->fileid);
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else{
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assertw(row[0]==PSYNC_FS_TASK_MODIFY);
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ret=fileid_to_objid(row[1]);
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}
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}
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else{
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debug(D_WARNING, "found temporary file for path %s but could not find task %lu", path, (unsigned long)(-cr->fileid));
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ret=-1;
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}
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psync_sql_free_result(res);
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return ret;
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}
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}
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checkfolder=!psync_fstask_find_rmdir(folder, fspath->name, 0);
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checkfile=!psync_fstask_find_unlink(folder, fspath->name, 0);
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}
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if (fspath->folderid<0){
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psync_free(fspath);
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debug(D_NOTICE, "path %s not found in temporary folder", path);
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return -1;
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}
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if (checkfolder){
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res=psync_sql_query_nolock("SELECT id FROM folder WHERE parentfolderid=? AND name=?");
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psync_sql_bind_uint(res, 1, fspath->folderid);
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psync_sql_bind_string(res, 2, fspath->name);
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if ((row=psync_sql_fetch_rowint(res)))
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ret=folderid_to_objid(row[0]);
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else
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ret=-1;
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psync_sql_free_result(res);
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if (ret!=-1){
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psync_free(fspath);
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return ret;
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}
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}
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if (checkfile){
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res=psync_sql_query_nolock("SELECT id FROM file WHERE parentfolderid=? AND name=?");
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psync_sql_bind_uint(res, 1, fspath->folderid);
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psync_sql_bind_string(res, 2, fspath->name);
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if ((row=psync_sql_fetch_rowint(res)))
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ret=fileid_to_objid(row[0]);
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else
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ret=-1;
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psync_sql_free_result(res);
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if (ret!=-1){
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psync_free(fspath);
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return ret;
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}
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}
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psync_free(fspath);
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debug(D_NOTICE, "path %s not found", path);
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return -1;
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}
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#define LOCK_AND_LOOKUP() do {\
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psync_sql_lock();\
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oid=xattr_get_object_id_locked(path);\
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if (unlikely(oid==-1)){\
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psync_sql_unlock();\
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return -PRINT_RETURN_CONST(ENOENT);\
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}\
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} while (0)
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#define LOCK_AND_LOOKUPRD() do {\
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psync_sql_rdlock();\
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oid=xattr_get_object_id_locked(path);\
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if (unlikely(oid==-1)){\
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psync_sql_rdunlock();\
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return -PRINT_RETURN_CONST(ENOENT);\
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}\
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} while (0)
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int psync_fs_setxattr(const char *path, const char *name, const char *value, size_t size, int flags PFS_XATTR_IGN){
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psync_sql_res *res;
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int64_t oid;
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int ret;
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psync_fs_set_thread_name();
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debug(D_NOTICE, "setting attribute %s of %s", name, path);
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LOCK_AND_LOOKUP();
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if (flags&XATTR_CREATE){
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res=psync_sql_prep_statement("INSERT OR IGNORE INTO fsxattr (objectid, name, value) VALUES (?, ?, ?)");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_bind_string(res, 2, name);
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psync_sql_bind_blob(res, 3, value, size);
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psync_sql_run_free(res);
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if (psync_sql_affected_rows())
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ret=0;
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else
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ret=-PRINT_RETURN_CONST(EEXIST);
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}
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else if (flags&XATTR_REPLACE){
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res=psync_sql_prep_statement("UPDATE fsxattr SET value=? WHERE objectid=? AND name=?");
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psync_sql_bind_blob(res, 1, value, size);
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psync_sql_bind_uint(res, 2, oid);
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psync_sql_bind_string(res, 3, name);
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psync_sql_run_free(res);
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if (psync_sql_affected_rows())
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ret=0;
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else
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ret=-PRINT_RETURN_CONST(ENOATTR);
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}
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else{
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res=psync_sql_prep_statement("REPLACE INTO fsxattr (objectid, name, value) VALUES (?, ?, ?)");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_bind_string(res, 2, name);
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psync_sql_bind_blob(res, 3, value, size);
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psync_sql_run_free(res);
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ret=0;
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}
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psync_sql_unlock();
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return ret;
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}
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int psync_fs_getxattr(const char *path, const char *name, char *value, size_t size PFS_XATTR_IGN){
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psync_sql_res *res;
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int64_t oid;
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int ret;
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psync_fs_set_thread_name();
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LOCK_AND_LOOKUPRD();
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if (size && value){
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psync_variant_row row;
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const char *str;
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size_t len;
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res=psync_sql_query_nolock("SELECT value FROM fsxattr WHERE objectid=? AND name=?");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_bind_string(res, 2, name);
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if ((row=psync_sql_fetch_row(res))){
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str=psync_get_lstring(row[0], &len);
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if (size>=len){
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debug(D_NOTICE, "returning attribute %s of %s", name, path);
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memcpy(value, str, len);
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ret=len;
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}
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else{
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debug(D_NOTICE, "buffer too small for attribute %s of %s", name, path);
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ret=-ERANGE;
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}
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}
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else{
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ret=-ENOATTR;
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// debug(D_NOTICE, "attribute %s not found for %s", name, path);
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}
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psync_sql_free_result(res);
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}
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else{
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psync_uint_row row;
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res=psync_sql_query_nolock("SELECT LENGTH(value) FROM fsxattr WHERE objectid=? AND name=?");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_bind_string(res, 2, name);
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if ((row=psync_sql_fetch_rowint(res))){
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ret=row[0];
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debug(D_NOTICE, "returning length of attribute %s of %s = %d", name, path, ret);
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}
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else{
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ret=-ENOATTR;
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// debug(D_NOTICE, "attribute %s not found for %s", name, path);
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}
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psync_sql_free_result(res);
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}
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psync_sql_rdunlock();
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return ret;
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}
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int psync_fs_listxattr(const char *path, char *list, size_t size){
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psync_sql_res *res;
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int64_t oid;
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const char *str;
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size_t len;
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int ret;
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psync_fs_set_thread_name();
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LOCK_AND_LOOKUPRD();
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if (size && list){
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psync_variant_row row;
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ret=0;
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res=psync_sql_query_nolock("SELECT name FROM fsxattr WHERE objectid=?");
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psync_sql_bind_uint(res, 1, oid);
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while ((row=psync_sql_fetch_row(res))){
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str=psync_get_lstring(row[0], &len);
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len++;
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if (ret+len>size){
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ret=-ERANGE;
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break;
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}
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memcpy(list+ret, str, len);
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ret+=len;
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}
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psync_sql_free_result(res);
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debug(D_NOTICE, "returning list of attributes of %s = %d", path, ret);
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}
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else{
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psync_uint_row row;
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res=psync_sql_query_nolock("SELECT SUM(LENGTH(name)+1) FROM fsxattr WHERE objectid=?");
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psync_sql_bind_uint(res, 1, oid);
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if ((row=psync_sql_fetch_rowint(res)))
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ret=row[0];
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else
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ret=0;
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psync_sql_free_result(res);
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debug(D_NOTICE, "returning length of attributes of %s = %d", path, ret);
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}
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psync_sql_rdunlock();
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return ret;
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}
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int psync_fs_removexattr(const char *path, const char *name){
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psync_sql_res *res;
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int64_t oid;
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uint32_t aff;
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psync_fs_set_thread_name();
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LOCK_AND_LOOKUP();
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res=psync_sql_prep_statement("DELETE FROM fsxattr WHERE objectid=? AND name=?");
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psync_sql_bind_uint(res, 1, oid);
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psync_sql_bind_string(res, 2, name);
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psync_sql_run_free(res);
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aff=psync_sql_affected_rows();
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psync_sql_unlock();
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if (aff){
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debug(D_NOTICE, "attribute %s deleted for %s", name, path);
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return 0;
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}
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else{
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debug(D_NOTICE, "attribute %s not found for %s", name, path);
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return -ENOATTR;
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}
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}
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