diff options
Diffstat (limited to 'source/modules/vfs_fake_perms.c')
| -rw-r--r-- | source/modules/vfs_fake_perms.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/source/modules/vfs_fake_perms.c b/source/modules/vfs_fake_perms.c new file mode 100644 index 00000000000..121a99a4519 --- /dev/null +++ b/source/modules/vfs_fake_perms.c @@ -0,0 +1,287 @@ +/* + * Fake Perms VFS module. Implements passthrough operation of all VFS + * calls to disk functions, except for file permissions, which are now + * mode 0700 for the current uid/gid. + * + * Copyright (C) Tim Potter, 1999-2000 + * Copyright (C) Alexander Bokovoy, 2002 + * Copyright (C) Andrew Bartlett, 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> + +static struct vfs_ops default_vfs_ops; /* For passthrough operation */ +static struct smb_vfs_handle_struct *fake_perms_handle; /* use fake_perms_handle->data for storing per-instance private data */ + +static int fake_perms_stat(struct connection_struct *conn, const char *fname, SMB_STRUCT_STAT *sbuf) +{ + int ret = default_vfs_ops.stat(conn, fname, sbuf); + if (ret == 0) { + extern struct current_user current_user; + + if (S_ISDIR(sbuf->st_mode)) { + sbuf->st_mode = S_IFDIR | S_IRWXU; + } else { + sbuf->st_mode = S_IRWXU; + } + sbuf->st_uid = current_user.uid; + sbuf->st_gid = current_user.gid; + } + return ret; +} + +static int fake_perms_fstat(struct files_struct *fsp, int fd, SMB_STRUCT_STAT *sbuf) +{ + int ret = default_vfs_ops.fstat(fsp, fd, sbuf); + if (ret == 0) { + extern struct current_user current_user; + + if (S_ISDIR(sbuf->st_mode)) { + sbuf->st_mode = S_IFDIR | S_IRWXU; + } else { + sbuf->st_mode = S_IRWXU; + } + sbuf->st_uid = current_user.uid; + sbuf->st_gid = current_user.gid; + } + return ret; +} + +#if 0 +static size_t fake_perms_fget_nt_acl(struct files_struct *fsp, int fd, struct security_descriptor_info **ppdesc) +{ + return default_vfs_ops.fget_nt_acl(fsp, fd, ppdesc); +} + +static size_t fake_perms_get_nt_acl(struct files_struct *fsp, const char *name, struct security_descriptor_info **ppdesc) +{ + return default_vfs_ops.get_nt_acl(fsp, name, ppdesc); +} + +static BOOL fake_perms_fset_nt_acl(struct files_struct *fsp, int fd, uint32 security_info_sent, struct security_descriptor_info *psd) +{ + return default_vfs_ops.fset_nt_acl(fsp, fd, security_info_sent, psd); +} + +static BOOL fake_perms_set_nt_acl(struct files_struct *fsp, const char *name, uint32 security_info_sent, struct security_descriptor_info *psd) +{ + return default_vfs_ops.set_nt_acl(fsp, name, security_info_sent, psd); +} + +static BOOL fake_perms_chmod_acl(struct connection_struct *conn, const char *name, mode_t mode) +{ + return default_vfs_ops.chmod_acl(conn, name, mode); +} + +static BOOL fake_perms_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode) +{ + return default_vfs_ops.fchmod_acl(fsp, fd, mode); +} + +static int fake_perms_sys_acl_get_entry(struct connection_struct *conn, SMB_ACL_T theacl, int entry_id, SMB_ACL_ENTRY_T *entry_p) +{ + return default_vfs_ops.sys_acl_get_entry(conn, theacl, entry_id, entry_p); +} + +static int fake_perms_sys_acl_get_tag_type(struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d, SMB_ACL_TAG_T *tag_type_p) +{ + return default_vfs_ops.sys_acl_get_tag_type(conn, entry_d, tag_type_p); +} + +static int fake_perms_sys_acl_get_permset(struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d, SMB_ACL_PERMSET_T *permset_p) +{ + return default_vfs_ops.sys_acl_get_permset(conn, entry_d, permset_p); +} + +static void *fake_perms_sys_acl_get_qualifier(struct connection_struct *conn, SMB_ACL_ENTRY_T entry_d) +{ + return default_vfs_ops.sys_acl_get_qualifier(conn, entry_d); +} + +static SMB_ACL_T fake_perms_sys_acl_get_file(struct connection_struct *conn, const char *path_p, SMB_ACL_TYPE_T type) +{ + return default_vfs_ops.sys_acl_get_file(conn, path_p, type); +} + +static SMB_ACL_T fake_perms_sys_acl_get_fd(struct files_struct *fsp, int fd) +{ + return default_vfs_ops.sys_acl_get_fd(fsp, fd); +} + +static int fake_perms_sys_acl_clear_perms(struct connection_struct *conn, SMB_ACL_PERMSET_T permset) +{ + return default_vfs_ops.sys_acl_clear_perms(conn, permset); +} + +static int fake_perms_sys_acl_add_perm(struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm) +{ + return default_vfs_ops.sys_acl_add_perm(conn, permset, perm); +} + +static char *fake_perms_sys_acl_to_text(struct connection_struct *conn, SMB_ACL_T theacl, ssize_t *plen) +{ + return default_vfs_ops.sys_acl_to_text(conn, theacl, plen); +} + +static SMB_ACL_T fake_perms_sys_acl_init(struct connection_struct *conn, int count) +{ + return default_vfs_ops.sys_acl_init(conn, count); +} + +static int fake_perms_sys_acl_create_entry(struct connection_struct *conn, SMB_ACL_T *pacl, SMB_ACL_ENTRY_T *pentry) +{ + return default_vfs_ops.sys_acl_create_entry(conn, pacl, pentry); +} + +static int fake_perms_sys_acl_set_tag_type(struct connection_struct *conn, SMB_ACL_ENTRY_T entry, SMB_ACL_TAG_T tagtype) +{ + return default_vfs_ops.sys_acl_set_tag_type(conn, entry, tagtype); +} + +static int fake_perms_sys_acl_set_qualifier(struct connection_struct *conn, SMB_ACL_ENTRY_T entry, void *qual) +{ + return default_vfs_ops.sys_acl_set_qualifier(conn, entry, qual); +} + +static int fake_perms_sys_acl_set_permset(struct connection_struct *conn, SMB_ACL_ENTRY_T entry, SMB_ACL_PERMSET_T permset) +{ + return default_vfs_ops.sys_acl_set_permset(conn, entry, permset); +} + +static int fake_perms_sys_acl_valid(struct connection_struct *conn, SMB_ACL_T theacl ) +{ + return default_vfs_ops.sys_acl_valid(conn, theacl ); +} + +static int fake_perms_sys_acl_set_file(struct connection_struct *conn, const char *name, SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl) +{ + return default_vfs_ops.sys_acl_set_file(conn, name, acltype, theacl); +} + +static int fake_perms_sys_acl_set_fd(struct files_struct *fsp, int fd, SMB_ACL_T theacl) +{ + return default_vfs_ops.sys_acl_set_fd(fsp, fd, theacl); +} + +static int fake_perms_sys_acl_delete_def_file(struct connection_struct *conn, const char *path) +{ + return default_vfs_ops.sys_acl_delete_def_file(conn, path); +} + +static int fake_perms_sys_acl_get_perm(struct connection_struct *conn, SMB_ACL_PERMSET_T permset, SMB_ACL_PERM_T perm) +{ + return default_vfs_ops.sys_acl_get_perm(conn, permset, perm); +} + +static int fake_perms_sys_acl_free_text(struct connection_struct *conn, char *text) +{ + return default_vfs_ops.sys_acl_free_text(conn, text); +} + +static int fake_perms_sys_acl_free_acl(struct connection_struct *conn, SMB_ACL_T posix_acl) +{ + return default_vfs_ops.sys_acl_free_acl(conn, posix_acl); +} + +static int fake_perms_sys_acl_free_qualifier(struct connection_struct *conn, void *qualifier, SMB_ACL_TAG_T tagtype) +{ + return default_vfs_ops.sys_acl_free_qualifier(conn, qualifier, tagtype); +} +#endif + +/* VFS operations structure */ + +static vfs_op_tuple fake_perms_ops[] = { + + /* NT File ACL operations */ +#if 0 + {fake_perms_fget_nt_acl, SMB_VFS_OP_FGET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_get_nt_acl, SMB_VFS_OP_GET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_fset_nt_acl, SMB_VFS_OP_FSET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_set_nt_acl, SMB_VFS_OP_SET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT}, + + /* POSIX ACL operations */ + + {fake_perms_chmod_acl, SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_fchmod_acl, SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_TRANSPARENT}, + + {fake_perms_sys_acl_get_entry, SMB_VFS_OP_SYS_ACL_GET_ENTRY, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_tag_type, SMB_VFS_OP_SYS_ACL_GET_TAG_TYPE, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_permset, SMB_VFS_OP_SYS_ACL_GET_PERMSET, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_qualifier, SMB_VFS_OP_SYS_ACL_GET_QUALIFIER, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_file, SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_fd, SMB_VFS_OP_SYS_ACL_GET_FD, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_clear_perms, SMB_VFS_OP_SYS_ACL_CLEAR_PERMS, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_add_perm, SMB_VFS_OP_SYS_ACL_ADD_PERM, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_to_text, SMB_VFS_OP_SYS_ACL_TO_TEXT, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_init, SMB_VFS_OP_SYS_ACL_INIT, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_create_entry, SMB_VFS_OP_SYS_ACL_CREATE_ENTRY, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_set_tag_type, SMB_VFS_OP_SYS_ACL_SET_TAG_TYPE, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_set_qualifier, SMB_VFS_OP_SYS_ACL_SET_QUALIFIER, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_set_permset, SMB_VFS_OP_SYS_ACL_SET_PERMSET, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_valid, SMB_VFS_OP_SYS_ACL_VALID, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_set_file, SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_set_fd, SMB_VFS_OP_SYS_ACL_SET_FD, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_delete_def_file, SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_get_perm, SMB_VFS_OP_SYS_ACL_GET_PERM, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_free_text, SMB_VFS_OP_SYS_ACL_FREE_TEXT, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_free_acl, SMB_VFS_OP_SYS_ACL_FREE_ACL, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_sys_acl_free_qualifier, SMB_VFS_OP_SYS_ACL_FREE_QUALIFIER, SMB_VFS_LAYER_TRANSPARENT}, +#endif + + {fake_perms_stat, SMB_VFS_OP_STAT, SMB_VFS_LAYER_TRANSPARENT}, + {fake_perms_fstat, SMB_VFS_OP_FSTAT, SMB_VFS_LAYER_TRANSPARENT}, + {NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP} +}; + +/* VFS initialisation - return initialized vfs_op_tuple array back to Samba */ + +static vfs_op_tuple *fake_perms_init(const struct vfs_ops *def_vfs_ops, + struct smb_vfs_handle_struct *vfs_handle) +{ + DEBUG(3, ("Initialising default vfs hooks\n")); + + memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops)); + + /* Remember vfs_handle for further allocation and referencing of private + information in vfs_handle->data + */ + fake_perms_handle = vfs_handle; + return fake_perms_ops; +} + +int vfs_fake_perms_init(void) +{ + return smb_register_vfs("fake_perms", fake_perms_init, SMB_VFS_INTERFACE_VERSION); +} |