diff options
Diffstat (limited to 'examples/VFS')
| -rw-r--r-- | examples/VFS/README | 57 | ||||
| -rw-r--r-- | examples/VFS/README.OtherModules | 51 | ||||
| -rw-r--r-- | examples/VFS/README.netatalk | 18 | ||||
| -rw-r--r-- | examples/VFS/audit.c | 268 | ||||
| -rw-r--r-- | examples/VFS/netatalk.c | 430 | ||||
| -rw-r--r-- | examples/VFS/recycle.c | 559 |
6 files changed, 9 insertions, 1374 deletions
diff --git a/examples/VFS/README b/examples/VFS/README index 1b09929059..25254c1ffc 100644 --- a/examples/VFS/README +++ b/examples/VFS/README @@ -1,53 +1,14 @@ -README for Samba Virtual File System (VFS) Examples +README for Samba Virtual File System (VFS) Example =================================================== -This directory contains some sample code to demonstrate VFS -construction. The following VFS modules are given: +This directory contains a skeleton VFS module. When used, +this module simply passes all requests back to the disk functions +(i.e it operates as a passthrough filter). It should be +useful as a starting point for developing new VFS +modules. - skel - A skeleton VFS module. When used, this module simply - passes all requests back to the disk functions (i.e it - operates as a passthrough filter). It should be - useful as a starting point for developing new VFS - modules. - - audit - A simple module to audit file access to the syslog - facility. The following operations are logged: share - connect/disconnect, directory opens/create/remove, - file open/close/rename/unlink/chmod. - - recycle - A recycle-bin like modules. When used any unlink call - will be intercepted and files moved to the recycle - directory nstead of beeing deleted. - - block - A simple module to block access to certain mount points or - directories. This module only hides the specified directories - and all directories beneath them. It should NOT be used to - secure directories. If the name of a file in one of those - directories is known, the file can still be opened. - - netatalk - A netatalk module, that will ease co-existence of samba and - netatalk file sharing services. - Looka t the README for more informations. - -You may have problems to compile these modules, as shared libraries are -compiled and linked in different ways on different systems. -I currently tested them against GNU/linux and IRIX. - -To use the VFS modules, create a share similar to the one below. The -important parameter is the 'vfs object' parameter which must point to -the exact pathname of the shared library object. - - [audit] - comment = Audited /data directory - path = /data - vfs object = /path/to/audit.so - writeable = yes - browseable = yes +Please read the VFS chapter in the HOWTO collection for general help +on the usage of VFS modules. Further documentation on writing VFS modules for Samba can be found in -docs directory of the Samba source distribution. +Samba Developers Guide. diff --git a/examples/VFS/README.OtherModules b/examples/VFS/README.OtherModules deleted file mode 100644 index 5693d2e3f4..0000000000 --- a/examples/VFS/README.OtherModules +++ /dev/null @@ -1,51 +0,0 @@ -This file contains a listing of various other VFS modules that -have been posted but don't currently reside in the Samba CVS -tree for one reason ot another (e.g. it is easy for the maintainer -to have his or her own CVS tree). - -No statemets about the stability or functionality any module -should be implied due to its presence here. - - ------------------------------------------------------------- -URL: http://www.css.tayloru.edu/~elorimer/databasefs/index.php - -Date: Sat, 28 Sep 2002 23:41:31 -0500 -From: Eric Lorimer <elorimer@css.tayloru.edu> -To: samba-technical@lists.samba.org -Subject: DatabaseFS VFS module - -Hello, - -I have created a VFS module which implements a fairly complete read-only -filesystem. It presents information from a database as a filesystem in -a modular and generic way to allow different databases to be used -(originally designed for organizing MP3s under directories such as -"Artists," "Song Keywords," etc... I have since applied it to a student -roster database very easily). The directory structure is stored in the -database itself and the module makes no assumptions about the database -structure beyond the table it requires to run. You can find it at: - -http://www.css.tayloru.edu/~elorimer/databasefs/index.php - - -Any feedback would be appreciated: comments, suggestions, patches, -etc... If nothing else, hopefully it might prove useful for someone -else who wishes to create a virtual filesystem. - -Thanks for the great product and keep up the good work. - - -- Eric Lorimer - ------------------------------------------------------------- -URL: http://www.openantivirus.org/ - -"samba-vscan is a proof-of-concept module for Samba, which -uses the VFS (virtual file system) features of Samba 2.2.x/3.0 -alphaX. Of couse, Samba has to be compiled with VFS support. -samba-vscan supports various virus scanners and is maintained -by Rainer Link". - ------------------------------------------------------------- - diff --git a/examples/VFS/README.netatalk b/examples/VFS/README.netatalk deleted file mode 100644 index 70f6eea316..0000000000 --- a/examples/VFS/README.netatalk +++ /dev/null @@ -1,18 +0,0 @@ -There is the new netatalk module both for HEAD. -This one has some difference from previous module: - --- it doesn't care about creating of .AppleDouble forks, just keeps ones in -sync; - --- if share in smb.conf doesn't contain .AppleDouble item in hide or veto -list, it will be added automatically. - -To my way of thinking, module became more lightweight and speedy. - -How to compile: - -you should place proper netatalk.c into examples/VFS/ then run 'configure' -from source/ and then run 'make' from examples/VFS/. - -add string 'vfs object = <path_to_netatalk_so>/netatlk.so' to smb.conf. It may -be defined either as global or as share-specific parameter. diff --git a/examples/VFS/audit.c b/examples/VFS/audit.c deleted file mode 100644 index 92b78c1c32..0000000000 --- a/examples/VFS/audit.c +++ /dev/null @@ -1,268 +0,0 @@ -/* - * Auditing VFS module for samba. Log selected file operations to syslog - * facility. - * - * Copyright (C) Tim Potter, 1999-2000 - * Copyright (C) Alexander Bokovoy, 2002 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "config.h" -#include <stdio.h> -#include <sys/stat.h> -#ifdef HAVE_UTIME_H -#include <utime.h> -#endif -#ifdef HAVE_DIRENT_H -#include <dirent.h> -#endif -#include <syslog.h> -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif -#include <errno.h> -#include <string.h> -#include <includes.h> -#include <vfs.h> - -#ifndef SYSLOG_FACILITY -#define SYSLOG_FACILITY LOG_USER -#endif - -#ifndef SYSLOG_PRIORITY -#define SYSLOG_PRIORITY LOG_NOTICE -#endif - -/* Function prototypes */ - -static int audit_connect(struct connection_struct *conn, const char *svc, const char *user); -static void audit_disconnect(struct connection_struct *conn); -static DIR *audit_opendir(struct connection_struct *conn, const char *fname); -static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode); -static int audit_rmdir(struct connection_struct *conn, const char *path); -static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode); -static int audit_close(struct files_struct *fsp, int fd); -static int audit_rename(struct connection_struct *conn, const char *old, const char *new); -static int audit_unlink(struct connection_struct *conn, const char *path); -static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode); -static int audit_chmod_acl(struct connection_struct *conn, const char *name, mode_t mode); -static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode); -static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode); - -/* VFS operations */ - -static struct vfs_ops default_vfs_ops; /* For passthrough operation */ -static struct smb_vfs_handle_struct *audit_handle; - -static vfs_op_tuple audit_ops[] = { - - /* Disk operations */ - - {audit_connect, SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER}, - {audit_disconnect, SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER}, - - /* Directory operations */ - - {audit_opendir, SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER}, - {audit_mkdir, SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER}, - {audit_rmdir, SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER}, - - /* File operations */ - - {audit_open, SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER}, - {audit_close, SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER}, - {audit_rename, SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER}, - {audit_unlink, SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER}, - {audit_chmod, SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER}, - {audit_fchmod, SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER}, - {audit_chmod_acl, SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER}, - {audit_fchmod_acl, SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER}, - - /* Finish VFS operations definition */ - - {NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP} -}; - -/* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */ - -vfs_op_tuple *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops, - struct smb_vfs_handle_struct *vfs_handle) -{ - *vfs_version = SMB_VFS_INTERFACE_VERSION; - memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops)); - - audit_handle = vfs_handle; - - openlog("smbd_audit", LOG_PID, SYSLOG_FACILITY); - syslog(SYSLOG_PRIORITY, "VFS_INIT: vfs_ops loaded\n"); - return audit_ops; -} - -/* VFS finalization function. */ -void vfs_done(connection_struct *conn) -{ - syslog(SYSLOG_PRIORITY, "VFS_DONE: vfs module unloaded\n"); -} - -/* Implementation of vfs_ops. Pass everything on to the default - operation but log event first. */ - -static int audit_connect(struct connection_struct *conn, const char *svc, const char *user) -{ - syslog(SYSLOG_PRIORITY, "connect to service %s by user %s\n", - svc, user); - - return default_vfs_ops.connect(conn, svc, user); -} - -static void audit_disconnect(struct connection_struct *conn) -{ - syslog(SYSLOG_PRIORITY, "disconnected\n"); - default_vfs_ops.disconnect(conn); -} - -static DIR *audit_opendir(struct connection_struct *conn, const char *fname) -{ - DIR *result = default_vfs_ops.opendir(conn, fname); - - syslog(SYSLOG_PRIORITY, "opendir %s %s%s\n", - fname, - (result == NULL) ? "failed: " : "", - (result == NULL) ? strerror(errno) : ""); - - return result; -} - -static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode) -{ - int result = default_vfs_ops.mkdir(conn, path, mode); - - syslog(SYSLOG_PRIORITY, "mkdir %s %s%s\n", - path, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_rmdir(struct connection_struct *conn, const char *path) -{ - int result = default_vfs_ops.rmdir(conn, path); - - syslog(SYSLOG_PRIORITY, "rmdir %s %s%s\n", - path, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode) -{ - int result = default_vfs_ops.open(conn, fname, flags, mode); - - syslog(SYSLOG_PRIORITY, "open %s (fd %d) %s%s%s\n", - fname, result, - ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "", - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_close(struct files_struct *fsp, int fd) -{ - int result = default_vfs_ops.close(fsp, fd); - - syslog(SYSLOG_PRIORITY, "close fd %d %s%s\n", - fd, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_rename(struct connection_struct *conn, const char *old, const char *new) -{ - int result = default_vfs_ops.rename(conn, old, new); - - syslog(SYSLOG_PRIORITY, "rename %s -> %s %s%s\n", - old, new, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_unlink(struct connection_struct *conn, const char *path) -{ - int result = default_vfs_ops.unlink(conn, path); - - syslog(SYSLOG_PRIORITY, "unlink %s %s%s\n", - path, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode) -{ - int result = default_vfs_ops.chmod(conn, path, mode); - - syslog(SYSLOG_PRIORITY, "chmod %s mode 0x%x %s%s\n", - path, mode, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_chmod_acl(struct connection_struct *conn, const char *path, mode_t mode) -{ - int result = default_vfs_ops.chmod_acl(conn, path, mode); - - syslog(SYSLOG_PRIORITY, "chmod_acl %s mode 0x%x %s%s\n", - path, mode, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode) -{ - int result = default_vfs_ops.fchmod(fsp, fd, mode); - - syslog(SYSLOG_PRIORITY, "fchmod %s mode 0x%x %s%s\n", - fsp->fsp_name, mode, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} - -static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode) -{ - int result = default_vfs_ops.fchmod_acl(fsp, fd, mode); - - syslog(SYSLOG_PRIORITY, "fchmod_acl %s mode 0x%x %s%s\n", - fsp->fsp_name, mode, - (result < 0) ? "failed: " : "", - (result < 0) ? strerror(errno) : ""); - - return result; -} diff --git a/examples/VFS/netatalk.c b/examples/VFS/netatalk.c deleted file mode 100644 index 353be36e6f..0000000000 --- a/examples/VFS/netatalk.c +++ /dev/null @@ -1,430 +0,0 @@ -/* - * AppleTalk VFS module for Samba-3.x - * - * Copyright (C) Alexei Kotovich, 2002 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "config.h" -#include <stdio.h> -#include <sys/stat.h> -#ifdef HAVE_UTIME_H -#include <utime.h> -#endif -#ifdef HAVE_DIRENT_H -#include <dirent.h> -#endif -#ifdef HAVE_FCNTL_H -#include <fcntl.h> -#endif -#include <errno.h> -#include <string.h> -#include <includes.h> -#include <vfs.h> - -#define APPLEDOUBLE ".AppleDouble" -#define ADOUBLEMODE 0777 - -/* atalk functions */ - -static int atalk_build_paths(TALLOC_CTX *ctx, const char *path, - const char *fname, char **adbl_path, char **orig_path, - SMB_STRUCT_STAT *adbl_info, SMB_STRUCT_STAT *orig_info); - -static int atalk_unlink_file(const char *path); - -static struct vfs_ops default_vfs_ops; /* For passthrough operation */ -static struct smb_vfs_handle_struct *atalk_handle; - -static int atalk_get_path_ptr(char *path) -{ - int i = 0; - int ptr = 0; - - for (i = 0; path[i]; i ++) { - if (path[i] == '/') - ptr = i; - /* get out some 'spam';) from win32's file name */ - else if (path[i] == ':') { - path[i] = '\0'; - break; - } - } - - return ptr; -} - -static int atalk_build_paths(TALLOC_CTX *ctx, const char *path, const char *fname, - char **adbl_path, char **orig_path, - SMB_STRUCT_STAT *adbl_info, SMB_STRUCT_STAT *orig_info) -{ - int ptr0 = 0; - int ptr1 = 0; - char *dname = 0; - char *name = 0; - - if (!ctx || !path || !fname || !adbl_path || !orig_path || - !adbl_info || !orig_info) - return -1; -#if 0 - DEBUG(3, ("ATALK: PATH: %s[%s]\n", path, fname)); -#endif - if (strstr(path, APPLEDOUBLE) || strstr(fname, APPLEDOUBLE)) { - DEBUG(3, ("ATALK: path %s[%s] already contains %s\n", path, fname, APPLEDOUBLE)); - return -1; - } - - if (fname[0] == '.') ptr0 ++; - if (fname[1] == '/') ptr0 ++; - - *orig_path = talloc_asprintf(ctx, "%s/%s", path, &fname[ptr0]); - - /* get pointer to last '/' */ - ptr1 = atalk_get_path_ptr(*orig_path); - - sys_lstat(*orig_path, orig_info); - - if (S_ISDIR(orig_info->st_mode)) { - *adbl_path = talloc_asprintf(ctx, "%s/%s/%s/", - path, &fname[ptr0], APPLEDOUBLE); - } else { - dname = talloc_strdup(ctx, *orig_path); - dname[ptr1] = '\0'; - name = *orig_path; - *adbl_path = talloc_asprintf(ctx, "%s/%s/%s", - dname, APPLEDOUBLE, &name[ptr1 + 1]); - } -#if 0 - DEBUG(3, ("ATALK: DEBUG:\n%s\n%s\n", *orig_path, *adbl_path)); -#endif - sys_lstat(*adbl_path, adbl_info); - return 0; -} - -static int atalk_unlink_file(const char *path) -{ - int ret = 0; - - become_root(); - ret = unlink(path); - unbecome_root(); - - return ret; -} - -static void atalk_add_to_list(name_compare_entry **list) -{ - int i, count = 0; - name_compare_entry *new_list = 0; - name_compare_entry *cur_list = 0; - - cur_list = *list; - - if (cur_list) { - for (i = 0, count = 0; cur_list[i].name; i ++, count ++) { - if (strstr(cur_list[i].name, APPLEDOUBLE)) - return; - } - } - - if (!(new_list = calloc(1, - (count == 0 ? 1 : count + 1) * sizeof(name_compare_entry)))) - return; - - for (i = 0; i < count; i ++) { - new_list[i].name = strdup(cur_list[i].name); - new_list[i].is_wild = cur_list[i].is_wild; - } - - new_list[i].name = strdup(APPLEDOUBLE); - new_list[i].is_wild = False; - - free_namearray(*list); - - *list = new_list; - new_list = 0; - cur_list = 0; -} - -static void atalk_rrmdir(TALLOC_CTX *ctx, char *path) -{ - int n; - char *dpath; - struct dirent **namelist; - - if (!path) return; - - n = scandir(path, &namelist, 0, alphasort); - if (n < 0) { - return; - } else { - while (n --) { - if (strcmp(namelist[n]->d_name, ".") == 0 || - strcmp(namelist[n]->d_name, "..") == 0) - continue; - if (!(dpath = talloc_asprintf(ctx, "%s/%s", - path, namelist[n]->d_name))) - continue; - atalk_unlink_file(dpath); - free(namelist[n]); - } - } -} - -/* Disk operations */ - -/* Directory operations */ - -DIR *atalk_opendir(struct connection_struct *conn, const char *fname) -{ - DIR *ret = 0; - - ret = default_vfs_ops.opendir(conn, fname); - - /* - * when we try to perform delete operation upon file which has fork - * in ./.AppleDouble and this directory wasn't hidden by Samba, - * MS Windows explorer causes the error: "Cannot find the specified file" - * There is some workaround to avoid this situation, i.e. if - * connection has not .AppleDouble entry in either veto or hide - * list then it would be nice to add one. - */ - - atalk_add_to_list(&conn->hide_list); - atalk_add_to_list(&conn->veto_list); - - return ret; -} - -static int atalk_rmdir(struct connection_struct *conn, const char *path) -{ - BOOL add = False; - TALLOC_CTX *ctx = 0; - char *dpath; - - if (!conn || !conn->origpath || !path) goto exit_rmdir; - - /* due to there is no way to change bDeleteVetoFiles variable - * from this module, gotta use talloc stuff.. - */ - - strstr(path, APPLEDOUBLE) ? (add = False) : (add = True); - - if (!(ctx = talloc_init_named("remove_directory"))) - goto exit_rmdir; - - if (!(dpath = talloc_asprintf(ctx, "%s/%s%s", - conn->origpath, path, add ? "/"APPLEDOUBLE : ""))) - goto exit_rmdir; - - atalk_rrmdir(ctx, dpath); - -exit_rmdir: - talloc_destroy(ctx); - return default_vfs_ops.rmdir(conn, path); -} - -/* File operations */ - -static int atalk_rename(struct connection_struct *conn, const char *old, const char *new) -{ - int ret = 0; - char *adbl_path = 0; - char *orig_path = 0; - SMB_STRUCT_STAT adbl_info; - SMB_STRUCT_STAT orig_info; - TALLOC_CTX *ctx; - - ret = default_vfs_ops.rename(conn, old, new); - - if (!conn || !old) return ret; - - if (!(ctx = talloc_init_named("rename_file"))) - return ret; - - if (atalk_build_paths(ctx, conn->origpath, old, &adbl_path, &orig_path, - &adbl_info, &orig_info) != 0) - return ret; - - if (S_ISDIR(orig_info.st_mode) || S_ISREG(orig_info.st_mode)) { - DEBUG(3, ("ATALK: %s has passed..\n", adbl_path)); - goto exit_rename; - } - - atalk_unlink_file(adbl_path); - -exit_rename: - talloc_destroy(ctx); - return ret; -} - -static int atalk_unlink(struct connection_struct *conn, const char *path) -{ - int ret = 0, i; - char *adbl_path = 0; - char *orig_path = 0; - SMB_STRUCT_STAT adbl_info; - SMB_STRUCT_STAT orig_info; - TALLOC_CTX *ctx; - - ret = default_vfs_ops.unlink(conn, path); - - if (!conn || !path) return ret; - - /* no .AppleDouble sync if veto or hide list is empty, - * otherwise "Cannot find the specified file" error will be caused - */ - - if (!conn->veto_list) return ret; - if (!conn->hide_list) return ret; - - for (i = 0; conn->veto_list[i].name; i ++) { - if (strstr(conn->veto_list[i].name, APPLEDOUBLE)) - break; - } - - if (!conn->veto_list[i].name) { - for (i = 0; conn->hide_list[i].name; i ++) { - if (strstr(conn->hide_list[i].name, APPLEDOUBLE)) - break; - else { - DEBUG(3, ("ATALK: %s is not hidden, skipped..\n", - APPLEDOUBLE)); - return ret; - } - } - } - - if (!(ctx = talloc_init_named("unlink_file"))) - return ret; - - if (atalk_build_paths(ctx, conn->origpath, path, &adbl_path, &orig_path, - &adbl_info, &orig_info) != 0) - return ret; - - if (S_ISDIR(orig_info.st_mode) || S_ISREG(orig_info.st_mode)) { - DEBUG(3, ("ATALK: %s has passed..\n", adbl_path)); - goto exit_unlink; - } - - atalk_unlink_file(adbl_path); - -exit_unlink: - talloc_destroy(ctx); - return ret; -} - -static int atalk_chmod(struct connection_struct *conn, const char *path, mode_t mode) -{ - int ret = 0; - char *adbl_path = 0; - char *orig_path = 0; - SMB_STRUCT_STAT adbl_info; - SMB_STRUCT_STAT orig_info; - TALLOC_CTX *ctx; - - ret = default_vfs_ops.chmod(conn, path, mode); - - if (!conn || !path) return ret; - - if (!(ctx = talloc_init_named("chmod_file"))) - return ret; - - if (atalk_build_paths(ctx, conn->origpath, path, &adbl_path, &orig_path, - &adbl_info, &orig_info) != 0) - return ret; - - if (!S_ISDIR(orig_info.st_mode) && !S_ISREG(orig_info.st_mode)) { - DEBUG(3, ("ATALK: %s has passed..\n", orig_path)); - goto exit_chmod; - } - - chmod(adbl_path, ADOUBLEMODE); - -exit_chmod: - talloc_destroy(ctx); - return ret; -} - -static int atalk_chown(struct connection_struct *conn, const char *path, uid_t uid, gid_t gid) -{ - int ret = 0; - char *adbl_path = 0; - char *orig_path = 0; - SMB_STRUCT_STAT adbl_info; - SMB_STRUCT_STAT orig_info; - TALLOC_CTX *ctx; - - ret = default_vfs_ops.chown(conn, path, uid, gid); - - if (!conn || !path) return ret; - - if (!(ctx = talloc_init_named("chown_file"))) - return ret; - - if (atalk_build_paths(ctx, conn->origpath, path, &adbl_path, &orig_path, - &adbl_info, &orig_info) != 0) - return ret; - - if (!S_ISDIR(orig_info.st_mode) && !S_ISREG(orig_info.st_mode)) { - DEBUG(3, ("ATALK: %s has passed..\n", orig_path)); - goto exit_chown; - } - - chown(adbl_path, uid, gid); - -exit_chown: - talloc_destroy(ctx); - return ret; -} - -static vfs_op_tuple atalk_ops[] = { - - /* Directory operations */ - - {atalk_opendir, SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_TRANSPARENT}, - {atalk_rmdir, SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_TRANSPARENT}, - - /* File operations */ - - {atalk_rename, SMB_VFS_OP_RENAME, SMB_VFS_LAYER_TRANSPARENT}, - {atalk_unlink, SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_TRANSPARENT}, - {atalk_chmod, SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_TRANSPARENT}, - {atalk_chown, SMB_VFS_OP_CHOWN, SMB_VFS_LAYER_TRANSPARENT}, - - /* Finish VFS operations definition */ - - {NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP} -}; - -/* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */ -vfs_op_tuple *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops, - struct smb_vfs_handle_struct *vfs_handle) -{ - *vfs_version = SMB_VFS_INTERFACE_VERSION; - memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops)); - - atalk_handle = vfs_handle; - - DEBUG(3, ("ATALK: vfs module loaded\n")); - return atalk_ops; -} - -/* VFS finalization function. */ -void vfs_done(connection_struct *conn) -{ - DEBUG(3, ("ATALK: vfs module unloaded\n")); -} diff --git a/examples/VFS/recycle.c b/examples/VFS/recycle.c deleted file mode 100644 index b59cb92a28..0000000000 --- a/examples/VFS/recycle.c +++ /dev/null @@ -1,559 +0,0 @@ -/* - * Recycle bin VFS module for Samba. - * - * Copyright (C) 2001, Brandon Stone, Amherst College, <bbstone@amherst.edu>. - * Copyright (C) 2002, Jeremy Allison - modified to make a VFS module. - * Copyright (C) 2002, Alexander Bokovoy - cascaded VFS adoption, - * Copyright (C) 2002, Juergen Hasch - added some options. - * Copyright (C) 2002, Simo Sorce - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include "includes.h" - -#define ALLOC_CHECK(ptr, label) do { if ((ptr) == NULL) { DEBUG(0, ("recycle.bin: out of memory!\n")); errno = ENOMEM; goto label; } } while(0) - -static int vfs_recycle_debug_level = DBGC_VFS; - -#undef DBGC_CLASS -#define DBGC_CLASS vfs_recycle_debug_level - -static const char *delimiter = "|"; /* delimiter for options */ - -/* One per connection */ - -typedef struct recycle_bin_struct -{ - TALLOC_CTX *ctx; - char *repository; /* name of the recycle bin directory */ - BOOL keep_dir_tree; /* keep directory structure of deleted file in recycle bin */ - BOOL versions; /* create versions of deleted files with identical name */ - BOOL touch; /* touch access date of deleted file */ - char *exclude; /* which files to exclude */ - char *exclude_dir; /* which directories to exclude */ - char *noversions; /* which files to exclude from versioning */ - SMB_OFF_T maxsize; /* maximum file size to be saved */ -} recycle_bin_struct; - -/* VFS operations */ -static struct vfs_ops default_vfs_ops; /* For passthrough operation */ - -static int recycle_connect(struct connection_struct *conn, const char *service, const char *user); -static void recycle_disconnect(struct connection_struct *conn); -static int recycle_unlink(connection_struct *, const char *); - -#define VFS_OP(x) ((void *) x) - -static vfs_op_tuple recycle_ops[] = { - - /* Disk operations */ - {VFS_OP(recycle_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_TRANSPARENT}, - {VFS_OP(recycle_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_TRANSPARENT}, - - /* File operations */ - {VFS_OP(recycle_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_TRANSPARENT}, - - {NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP} -}; - -static BOOL check_bool_param(const char *value) -{ - if (strwicmp(value, "yes") == 0 || - strwicmp(value, "true") == 0 || - strwicmp(value, "1") == 0) - return True; - - return False; -} - -/** - * VFS initialisation function. - * - * @retval initialised vfs_op_tuple array - **/ -vfs_op_tuple *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops, - struct smb_vfs_handle_struct *vfs_handle) -{ - DEBUG(10, ("Initializing VFS module recycle\n")); - *vfs_version = SMB_VFS_INTERFACE_VERSION; - memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops)); - vfs_recycle_debug_level = debug_add_class("vfs_recycle_bin"); - if (vfs_recycle_debug_level == -1) { - vfs_recycle_debug_level = DBGC_VFS; - DEBUG(0, ("vfs_recycle: Couldn't register custom debugging class!\n")); - } else { - DEBUG(0, ("vfs_recycle: Debug class number of 'vfs_recycle': %d\n", vfs_recycle_debug_level)); - } - - return recycle_ops; -} - -/** - * VFS finalization function. - * - **/ -void vfs_done(connection_struct *conn) -{ - DEBUG(10,("Called for connection %d\n", SNUM(conn))); -} - -static int recycle_connect(struct connection_struct *conn, const char *service, const char *user) -{ - TALLOC_CTX *ctx = NULL; - recycle_bin_struct *recbin; - char *servicename; - char *tmp_str; - - DEBUG(10, ("Called for service %s (%d) as user %s\n", service, SNUM(conn), user)); - - if (!(ctx = talloc_init_named("recycle bin"))) { - DEBUG(0, ("Failed to allocate memory in VFS module recycle_bin\n")); - return 0; - } - - recbin = talloc(ctx,sizeof(recycle_bin_struct)); - if ( recbin == NULL) { - DEBUG(0, ("Failed to allocate memory in VFS module recycle_bin\n")); - return -1; - } - recbin->ctx = ctx; - - /* Set defaults */ - recbin->repository = talloc_strdup(ctx, ".recycle"); - ALLOC_CHECK(recbin->repository, error); - recbin->keep_dir_tree = False; - recbin->versions = False; - recbin->touch = False; - recbin->exclude = ""; - recbin->exclude_dir = ""; - recbin->noversions = ""; - recbin->maxsize = 0; - - /* parse configuration options */ - servicename = talloc_strdup(recbin->ctx, lp_servicename(SNUM(conn))); - DEBUG(10, ("servicename = %s\n",servicename)); - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "repository")) != NULL) { - recbin->repository = talloc_sub_conn(ctx, conn, tmp_str); - ALLOC_CHECK(recbin->repository, error); - trim_string(recbin->repository, "/", "/"); - DEBUG(5, ("recycle.bin: repository = %s\n", recbin->repository)); - } - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "keeptree")) != NULL) { - if (check_bool_param(tmp_str) == True) - recbin->keep_dir_tree = True; - DEBUG(5, ("recycle.bin: keeptree = %s\n", tmp_str)); - } - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "versions")) != NULL) { - if (check_bool_param(tmp_str) == True) - recbin->versions = True; - DEBUG(5, ("recycle.bin: versions = %s\n", tmp_str)); - } - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "touch")) != NULL) { - if (check_bool_param(tmp_str) == True) - recbin->touch = True; - DEBUG(5, ("recycle.bin: touch = %s\n", tmp_str)); - } - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "maxsize")) != NULL) { - recbin->maxsize = strtoul(tmp_str, NULL, 10); - if (recbin->maxsize == 0) { - recbin->maxsize = -1; - DEBUG(5, ("recycle.bin: maxsize = -infinite-\n")); - } else { - DEBUG(5, ("recycle.bin: maxsize = %ld\n", (long int)recbin->maxsize)); - } - } - if ((tmp_str = lp_parm_string(servicename, "vfs_recycle_bin", "exclude")) != NULL) { - recbin->exclude = talloc_strdup(ctx, tmp_str); - ALLOC_CHECK(recbin->exclude, error); - DEBUG(5, ("recycle.bin: exclude = %s\n", recbin->exclude)); - } - if ((tmp_str = lp_parm_string(servicename,"vfs_recycle_bin", "exclude_dir")) != NULL) { - recbin->exclude_dir = talloc_strdup(ctx, tmp_str); - ALLOC_CHECK(recbin->exclude_dir, error); - DEBUG(5, ("recycle.bin: exclude_dir = %s\n", recbin->exclude_dir)); - } - if ((tmp_str = lp_parm_string(servicename,"vfs_recycle_bin", "noversions")) != NULL) { - recbin->noversions = talloc_strdup(ctx, tmp_str); - ALLOC_CHECK(recbin->noversions, error); - DEBUG(5, ("recycle.bin: noversions = %s\n", recbin->noversions)); - } - - conn->vfs_private = (void *)recbin; - return default_vfs_ops.connect(conn, service, user); - -error: - talloc_destroy(ctx); - return -1; -} - -static void recycle_disconnect(struct connection_struct *conn) -{ - DEBUG(10, ("Disconnecting VFS module recycle bin\n")); - if (conn->vfs_private) { - talloc_destroy(((recycle_bin_struct *)conn->vfs_private)->ctx); - conn->vfs_private = NULL; - } - default_vfs_ops.disconnect(conn); -} - -static BOOL recycle_directory_exist(connection_struct *conn, const char *dname) -{ - SMB_STRUCT_STAT st; - - if (default_vfs_ops.stat(conn, dname, &st) == 0) { - if (S_ISDIR(st.st_mode)) { - return True; - } - } - - return False; -} - -static BOOL recycle_file_exist(connection_struct *conn, const char *fname) -{ - SMB_STRUCT_STAT st; - - if (default_vfs_ops.stat(conn, fname, &st) == 0) { - if (S_ISREG(st.st_mode)) { - return True; - } - } - - return False; -} - -/** - * Return file size - * @param conn connection - * @param fname file name - * @return size in bytes - **/ -static SMB_OFF_T recycle_get_file_size(connection_struct *conn, const char *fname) -{ - SMB_STRUCT_STAT st; - if (default_vfs_ops.stat(conn, fname, &st) != 0) { - DEBUG(0,("recycle.bin: stat for %s returned %s\n", fname, strerror(errno))); - return (SMB_OFF_T)0; - } - return(st.st_size); -} - -/** - * Create directory tree - * @param conn connection - * @param dname Directory tree to be created - * @return Returns True for success - **/ -static BOOL recycle_create_dir(connection_struct *conn, const char *dname) -{ - int len; - mode_t mode; - char *new_dir = NULL; - char *tmp_str = NULL; - char *token; - char *tok_str; - BOOL ret = False; - - mode = S_IREAD | S_IWRITE | S_IEXEC; - - tmp_str = strdup(dname); - ALLOC_CHECK(tmp_str, done); - tok_str = tmp_str; - - len = strlen(dname); - new_dir = (char *)malloc(len + 1); - ALLOC_CHECK(new_dir, done); - *new_dir = '\0'; - - /* Create directory tree if neccessary */ - for(token = strtok(tok_str, "/"); token; token = strtok(NULL, "/")) { - safe_strcat(new_dir, token, len); - if (recycle_directory_exist(conn, new_dir)) - DEBUG(10, ("recycle.bin: dir %s already exists\n", new_dir)); - else { - DEBUG(5, ("recycle.bin: creating new dir %s\n", new_dir)); - if (default_vfs_ops.mkdir(conn, new_dir, mode) != 0) { - DEBUG(1,("recycle.bin: mkdir failed for %s with error: %s\n", new_dir, strerror(errno))); - ret = False; - goto done; - } - } - safe_strcat(new_dir, "/", len); - } - - ret = True; -done: - SAFE_FREE(tmp_str); - SAFE_FREE(new_dir); - return ret; -} - -/** - * Check if needle is contained exactly in haystack - * @param haystack list of parameters separated by delimimiter character - * @param needle string to be matched exactly to haystack - * @return True if found - **/ -static BOOL checkparam(const char *haystack, const char *needle) -{ - char *token; - char *tok_str; - char *tmp_str; - BOOL ret = False; - - if (haystack == NULL || strlen(haystack) == 0 || needle == NULL || strlen(needle) == 0) { - return False; - } - - tmp_str = strdup(haystack); - ALLOC_CHECK(tmp_str, done); - token = tok_str = tmp_str; - - for(token = strtok(tok_str, delimiter); token; token = strtok(NULL, delimiter)) { - if(strcmp(token, needle) == 0) { - ret = True; - goto done; - } - } -done: - SAFE_FREE(tmp_str); - return ret; -} - -/** - * Check if needle is contained in haystack, * and ? patterns are resolved - * @param haystack list of parameters separated by delimimiter character - * @param needle string to be matched exectly to haystack including pattern matching - * @return True if found - **/ -static BOOL matchparam(const char *haystack, const char *needle) -{ - char *token; - char *tok_str; - char *tmp_str; - BOOL ret = False; - - if (haystack == NULL || strlen(haystack) == 0 || needle == NULL || strlen(needle) == 0) { - return False; - } - - tmp_str = strdup(haystack); - ALLOC_CHECK(tmp_str, done); - token = tok_str = tmp_str; - - for(token = strtok(tok_str, delimiter); token; token = strtok(NULL, delimiter)) { - if (!unix_wild_match(token, needle)) { - ret = True; - goto done; - } - } -done: - SAFE_FREE(tmp_str); - return ret; -} - -/** - * Touch access date - **/ -static void recycle_touch(connection_struct *conn, const char *fname) -{ - SMB_STRUCT_STAT st; - struct utimbuf tb; - time_t currtime; - - if (default_vfs_ops.stat(conn, fname, &st) != 0) { - DEBUG(0,("recycle.bin: stat for %s returned %s\n", fname, strerror(errno))); - return; - } - currtime = time(&currtime); - tb.actime = currtime; - tb.modtime = st.st_mtime; - - if (default_vfs_ops.utime(conn, fname, &tb) == -1 ) - DEBUG(0, ("recycle.bin: touching %s failed, reason = %s\n", fname, strerror(errno))); - } - -/** - * Check if file should be recycled - **/ -static int recycle_unlink(connection_struct *conn, const char *inname) -{ - recycle_bin_struct *recbin; - char *file_name = NULL; - char *path_name = NULL; - char *temp_name = NULL; - char *final_name = NULL; - char *base; - int i; - SMB_BIG_UINT dfree, dsize, bsize; - SMB_OFF_T file_size, space_avail; - BOOL exist; - int rc = -1; - - file_name = strdup(inname); - ALLOC_CHECK(file_name, done); - - if (conn->vfs_private) - recbin = (recycle_bin_struct *)conn->vfs_private; - else { - DEBUG(0, ("Recycle bin not initialized!\n")); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - if(!recbin->repository || *(recbin->repository) == '\0') { - DEBUG(3, ("Recycle path not set, purging %s...\n", file_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - /* we don't recycle the recycle bin... */ - if (strncmp(file_name, recbin->repository, strlen(recbin->repository)) == 0) { - DEBUG(3, ("File is within recycling bin, unlinking ...\n")); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - file_size = recycle_get_file_size(conn, file_name); - /* it is wrong to purge filenames only because they are empty imho - * --- simo - * - if(fsize == 0) { - DEBUG(3, ("File %s is empty, purging...\n", file_name)); - rc = default_vfs_ops.unlink(conn,file_name); - goto done; - } - */ - - /* FIXME: this is wrong, we should check the hole size of the recycle bin is - * not greater then maxsize, not the size of the single file, also it is better - * to remove older files - */ - if(recbin->maxsize > 0 && file_size > recbin->maxsize) { - DEBUG(3, ("File %s exceeds maximum recycle size, purging... \n", file_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - /* FIXME: this is wrong: moving files with rename does not change the disk space - * allocation - * - space_avail = default_vfs_ops.disk_free(conn, ".", True, &bsize, &dfree, &dsize) * 1024L; - DEBUG(5, ("space_avail = %Lu, file_size = %Lu\n", space_avail, file_size)); - if(space_avail < file_size) { - DEBUG(3, ("Not enough diskspace, purging file %s\n", file_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - */ - - /* extract filename and path */ - path_name = (char *)malloc(PATH_MAX); - ALLOC_CHECK(path_name, done); - *path_name = '\0'; - safe_strcpy(path_name, file_name, PATH_MAX); - base = strrchr(path_name, '/'); - if (base == NULL) { - base = file_name; - safe_strcpy(path_name, "/", PATH_MAX); - } - else { - *base = '\0'; - base++; - } - - DEBUG(10, ("recycle.bin: fname = %s\n", file_name)); /* original filename with path */ - DEBUG(10, ("recycle.bin: fpath = %s\n", path_name)); /* original path */ - DEBUG(10, ("recycle.bin: base = %s\n", base)); /* filename without path */ - - if (matchparam(recbin->exclude, base)) { - DEBUG(3, ("recycle.bin: file %s is excluded \n", base)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - /* FIXME: this check will fail if we have more than one level of directories, - * we shoud check for every level 1, 1/2, 1/2/3, 1/2/3/4 .... - * ---simo - */ - if (checkparam(recbin->exclude_dir, path_name)) { - DEBUG(3, ("recycle.bin: directory %s is excluded \n", path_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - temp_name = (char *)malloc(PATH_MAX); - ALLOC_CHECK(temp_name, done); - safe_strcpy(temp_name, recbin->repository, PATH_MAX); - - /* see if we need to recreate the original directory structure in the recycle bin */ - if (recbin->keep_dir_tree == True) { - safe_strcat(temp_name, "/", PATH_MAX); - safe_strcat(temp_name, path_name, PATH_MAX); - } - - exist = recycle_directory_exist(conn, temp_name); - if (exist) { - DEBUG(10, ("recycle.bin: Directory already exists\n")); - } else { - DEBUG(10, ("recycle.bin: Creating directory %s\n", temp_name)); - if (recycle_create_dir(conn, temp_name) == False) { - DEBUG(3, ("Could not create directory, purging %s...\n", file_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - } - - final_name = (char *)malloc(PATH_MAX); - ALLOC_CHECK(final_name, done); - snprintf(final_name, PATH_MAX, "%s/%s", temp_name, base); - DEBUG(10, ("recycle.bin: recycled file name%s\n", temp_name)); /* new filename with path */ - - /* check if we should delete file from recycle bin */ - if (recycle_file_exist(conn, final_name)) { - if (recbin->versions == False || matchparam(recbin->noversions, base) == True) { - DEBUG(3, ("recycle.bin: Removing old file %s from recycle bin\n", final_name)); - if (default_vfs_ops.unlink(conn, final_name) != 0) { - DEBUG(1, ("recycle.bin: Error deleting old file: %s\n", strerror(errno))); - } - } - } - - /* rename file we move to recycle bin */ - i = 1; - while (recycle_file_exist(conn, final_name)) { - snprintf(final_name, PATH_MAX, "%s/Copy #%d of %s", temp_name, i++, base); - } - - DEBUG(10, ("recycle.bin: Moving %s to %s\n", file_name, final_name)); - rc = default_vfs_ops.rename(conn, file_name, final_name); - if (rc != 0) { - DEBUG(3, ("recycle.bin: Move error %d (%s), purging file %s (%s)\n", errno, strerror(errno), file_name, final_name)); - rc = default_vfs_ops.unlink(conn, file_name); - goto done; - } - - /* touch access date of moved file */ - if (recbin->touch == True ) - recycle_touch(conn, final_name); - -done: - SAFE_FREE(file_name); - SAFE_FREE(path_name); - SAFE_FREE(temp_name); - SAFE_FREE(final_name); - return rc; -} |