diff options
Diffstat (limited to 'examples/VFS')
| -rw-r--r-- | examples/VFS/.cvsignore | 1 | ||||
| -rw-r--r-- | examples/VFS/Makefile | 21 | ||||
| -rw-r--r-- | examples/VFS/README | 31 | ||||
| -rw-r--r-- | examples/VFS/audit.c | 208 | ||||
| -rw-r--r-- | examples/VFS/skel.c | 225 |
5 files changed, 486 insertions, 0 deletions
diff --git a/examples/VFS/.cvsignore b/examples/VFS/.cvsignore new file mode 100644 index 0000000000..9c0e66ecaf --- /dev/null +++ b/examples/VFS/.cvsignore @@ -0,0 +1 @@ +.libs diff --git a/examples/VFS/Makefile b/examples/VFS/Makefile new file mode 100644 index 0000000000..fb9976893b --- /dev/null +++ b/examples/VFS/Makefile @@ -0,0 +1,21 @@ +# +# Makefile for samba-vfs examples +# +# $Id: Makefile,v 1.1 2000/02/03 04:40:56 tpot Exp $ +# + +# Variables + +SAMBA_SRC = ../../source + +CFLAGS = -I$(SAMBA_SRC)/include +CC = gcc + +VFS_OBJS = audit.o skel.o + +# Targets + +default: $(VFS_OBJS) + +clean: + rm -f core $(VFS_OBJS) *~ *% *.bak diff --git a/examples/VFS/README b/examples/VFS/README new file mode 100644 index 0000000000..dc7398892d --- /dev/null +++ b/examples/VFS/README @@ -0,0 +1,31 @@ +README for Samba Virtual File System (VFS) Examples +=================================================== + +This directory contains some sample code to demonstrate VFS +construction. The following VFS modules are given: + + 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. + + streamer + Stream file writes to a network address instead of to + disk. + + perlfs + A wrapper for writing Samba VFS modules in Perl. + +The modules need only to be compiled with -I/samba/source/dir added to +CFLAGS. + +Further documentation on writing VFS modules for Samba can be found in +docs directory of the Samba source distribution. diff --git a/examples/VFS/audit.c b/examples/VFS/audit.c new file mode 100644 index 0000000000..3d84c579c7 --- /dev/null +++ b/examples/VFS/audit.c @@ -0,0 +1,208 @@ +/* + * Auditing VFS module for samba. Log select file operations to syslog + * facility. + * + * Copyright (C) Tim Potter, 1999 + * + * 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. + * + * $Id: audit.c,v 1.1 2000/02/03 04:40:56 tpot Exp $ + */ + +#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 <vfs.h> + +#ifndef SYSLOG_FACILITY +#define SYSLOG_FACILITY LOG_USER +#endif + +#ifndef SYSLOG_PRIORITY +#define SYSLOG_PRIORITY LOG_NOTICE +#endif + +/* Function prototypes */ + +int audit_connect(struct vfs_connection_struct *conn, char *svc, char *user); +void audit_disconnect(void); +DIR *audit_opendir(char *fname); +int audit_mkdir(char *path, mode_t mode); +int audit_rmdir(char *path); +int audit_open(char *fname, int flags, mode_t mode); +int audit_close(int fd); +int audit_rename(char *old, char *new); +int audit_unlink(char *path); +int audit_chmod(char *path, mode_t mode); + +/* VFS operations */ + +extern struct vfs_ops default_vfs_ops; /* For passthrough operation */ + +struct vfs_ops audit_ops = { + + /* Disk operations */ + + audit_connect, + audit_disconnect, + NULL, /* disk free */ + + /* Directory operations */ + + audit_opendir, + NULL, /* readdir */ + audit_mkdir, + audit_rmdir, + NULL, /* closedir */ + + /* File operations */ + + audit_open, + audit_close, + NULL, /* read */ + NULL, /* write */ + NULL, /* lseek */ + audit_rename, + NULL, /* sync */ + NULL, /* stat */ + NULL, /* fstat */ + NULL, /* lstat */ + NULL, /* fcntl_lock */ + audit_unlink, + NULL, /* chmod */ + NULL /* utime */ +}; + +/* VFS initialisation function. Return initialised vfs_ops structure + back to SAMBA. */ + +struct vfs_ops *vfs_init(void) +{ + openlog("smbd_audit", LOG_PID, SYSLOG_FACILITY); + return(&audit_ops); +} + +/* Implementation of vfs_ops. Pass everything on to the default + operation but log event first. */ + +int audit_connect(struct vfs_connection_struct *conn, char *svc, char *user) +{ + syslog(SYSLOG_PRIORITY, "connect to service %s by user %s\n", svc, user); + + return default_vfs_ops.connect(conn, svc, user); +} + +void audit_disconnect(void) +{ + syslog(SYSLOG_PRIORITY, "disconnected\n"); + default_vfs_ops.disconnect(); +} + +DIR *audit_opendir(char *fname) +{ + DIR *result = default_vfs_ops.opendir(fname); + + syslog(SYSLOG_PRIORITY, "opendir %s %s%s\n", + fname, + (result == NULL) ? "failed: " : "", + (result == NULL) ? strerror(errno) : ""); + + return result; +} + +int audit_mkdir(char *path, mode_t mode) +{ + int result = default_vfs_ops.mkdir(path, mode); + + syslog(SYSLOG_PRIORITY, "mkdir %s %s%s\n", + path, + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} + +int audit_rmdir(char *path) +{ + int result = default_vfs_ops.rmdir(path); + + syslog(SYSLOG_PRIORITY, "rmdir %s %s%s\n", + path, + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} + +int audit_open(char *fname, int flags, mode_t mode) +{ + int result = default_vfs_ops.open(fname, flags, mode); + + syslog(SYSLOG_PRIORITY, "open %s (fd %d) %s%s%s\n", + fname, result, + ((mode & O_WRONLY) || (mode & O_RDWR)) ? "for writing " : "", + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} + +int audit_close(int fd) +{ + int result = default_vfs_ops.close(fd); + + syslog(SYSLOG_PRIORITY, "close fd %d %s%s\n", + fd, + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} + +int audit_rename(char *old, char *new) +{ + int result = default_vfs_ops.rename(old, new); + + syslog(SYSLOG_PRIORITY, "rename %s -> %s %s%s\n", + old, new, + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} + +int audit_unlink(char *path) +{ + int result = default_vfs_ops.unlink(path); + + syslog(SYSLOG_PRIORITY, "unlink %s %s%s\n", + path, + (result < 0) ? "failed: " : "", + (result < 0) ? strerror(errno) : ""); + + return result; +} diff --git a/examples/VFS/skel.c b/examples/VFS/skel.c new file mode 100644 index 0000000000..fae2bc51df --- /dev/null +++ b/examples/VFS/skel.c @@ -0,0 +1,225 @@ +/* + * Skeleton VFS module. + * + * Copyright (C) Tim Potter, 1999 + * + * 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. + * + * $Id: skel.c,v 1.1 2000/02/03 04:40:56 tpot Exp $ + */ + +#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 <vfs.h> + +/* Function prototypes */ + +int skel_connect(struct vfs_connection_struct *conn, char *svc, char *user); +void skel_disconnect(void); +SMB_BIG_UINT skel_disk_free(char *path, SMB_BIG_UINT *bsize, + SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize); + +DIR *skel_opendir(char *fname); +struct dirent *skel_readdir(DIR *dirp); +int skel_mkdir(char *path, mode_t mode); +int skel_rmdir(char *path); +int skel_closedir(DIR *dir); + +int skel_open(char *fname, int flags, mode_t mode); +int skel_close(int fd); +ssize_t skel_read(int fd, char *data, size_t n); +ssize_t skel_write(int fd, char *data, size_t n); +SMB_OFF_T skel_lseek(int filedes, SMB_OFF_T offset, int whence); +int skel_rename(char *old, char *new); +void skel_sync(int fd); +int skel_stat(char *fname, SMB_STRUCT_STAT *sbuf); +int skel_fstat(int fd, SMB_STRUCT_STAT *sbuf); +int skel_lstat(char *path, SMB_STRUCT_STAT *sbuf); +BOOL skel_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type); +int skel_unlink(char *path); +int skel_chmod(char *path, mode_t mode); +int skel_utime(char *path, struct utimbuf *times); + +/* VFS operations structure */ + +struct vfs_ops skel_ops = { + + /* Disk operations */ + + skel_connect, + skel_disconnect, + skel_disk_free, + + /* Directory operations */ + + skel_opendir, + skel_readdir, + skel_mkdir, + skel_rmdir, + skel_closedir, + + /* File operations */ + + skel_open, + skel_close, + skel_read, + skel_write, + skel_lseek, + skel_rename, + skel_sync, + skel_stat, + skel_fstat, + skel_lstat, + skel_lock, + skel_unlink, + skel_chmod, + skel_utime +}; + +/* VFS initialisation - return vfs_ops function pointer structure */ + +struct vfs_ops *vfs_init(void) +{ + return(&skel_ops); +} + +/* Implementation of VFS functions. Insert your useful stuff here */ + +extern struct vfs_ops default_vfs_ops; /* For passthrough operation */ + +int skel_connect(struct vfs_connection_struct *conn, char *svc, char *user) +{ + return default_vfs_ops.connect(conn, svc, user); +} + +void skel_disconnect(void) +{ + default_vfs_ops.disconnect(); +} + +SMB_BIG_UINT skel_disk_free(char *path, SMB_BIG_UINT *bsize, + SMB_BIG_UINT *dfree, SMB_BIG_UINT *dsize) +{ + return default_vfs_ops.disk_free(path, bsize, dfree, dsize); +} + +DIR *skel_opendir(char *fname) +{ + return default_vfs_ops.opendir(fname); +} + +struct dirent *skel_readdir(DIR *dirp) +{ + return default_vfs_ops.readdir(dirp); +} + +int skel_mkdir(char *path, mode_t mode) +{ + return default_vfs_ops.mkdir(path, mode); +} + +int skel_rmdir(char *path) +{ + return default_vfs_ops.rmdir(path); +} + +int skel_closedir(DIR *dir) +{ + return default_vfs_ops.closedir(dir); +} + +int skel_open(char *fname, int flags, mode_t mode) +{ + return default_vfs_ops.open(fname, flags, mode); +} + +int skel_close(int fd) +{ + return default_vfs_ops.close(fd); +} + +ssize_t skel_read(int fd, char *data, size_t n) +{ + return default_vfs_ops.read(fd, data, n); +} + +ssize_t skel_write(int fd, char *data, size_t n) +{ + return default_vfs_ops.write(fd, data, n); +} + +SMB_OFF_T skel_lseek(int filedes, SMB_OFF_T offset, int whence) +{ + return default_vfs_ops.lseek(filedes, offset, whence); +} + +int skel_rename(char *old, char *new) +{ + return default_vfs_ops.rename(old, new); +} + +void skel_sync(int fd) +{ + default_vfs_ops.sync(fd); +} + +int skel_stat(char *fname, SMB_STRUCT_STAT *sbuf) +{ + return default_vfs_ops.stat(fname, sbuf); +} + +int skel_fstat(int fd, SMB_STRUCT_STAT *sbuf) +{ + return default_vfs_ops.fstat(fd, sbuf); +} + +int skel_lstat(char *path, SMB_STRUCT_STAT *sbuf) +{ + return default_vfs_ops.lstat(path, sbuf); +} + +BOOL skel_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type) +{ + return default_vfs_ops.lock(fd, op, offset, count, type); +} + +int skel_unlink(char *path) +{ + return default_vfs_ops.unlink(path); +} + +int skel_chmod(char *path, mode_t mode) +{ + return default_vfs_ops.chmod(path, mode); +} + +int skel_utime(char *path, struct utimbuf *times) +{ + return default_vfs_ops.utime(path, times); +} |