+/*
+ * Convert JFS2 NFS4/AIXC acls to NT acls and vice versa.
+ *
+ * Copyright (C) Volker Lendecke, 2006
+ *
+ * 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"
+#include "nfs4_acls.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_VFS
+
+#define AIXACL2_MODULE_NAME "aixacl2"
+
+extern struct current_user current_user;
+extern int try_chown(connection_struct *conn, const char *fname, uid_t uid, gid_t gid);
+extern BOOL unpack_nt_owners(int snum, uid_t *puser, gid_t *pgrp,
+ uint32 security_info_sent, SEC_DESC *psd);
+
+extern SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
+extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
+
+typedef union aixjfs2_acl_t {
+ nfs4_acl_int_t jfs2_acl[1];
+ aixc_acl_t aixc_acl[1];
+}AIXJFS2_ACL_T;
+
+static int32_t aixacl2_getlen(AIXJFS2_ACL_T *acl, acl_type_t *type)
+{
+ int32_t len;
+
+ if(type->u64 == ACL_NFS4) {
+ len = acl->jfs2_acl[0].aclLength;
+ }
+ else {
+ if(type->u64 == ACL_AIXC) {
+ len = acl->aixc_acl[0].acl_len;
+ } else {
+ DEBUG(0,("aixacl2_getlen:unknown type:%d\n",type->u64));
+ return False;
+ }
+ }
+ DEBUG(10,("aixacl2_getlen:%d\n",len));
+ return len;
+}
+
+static AIXJFS2_ACL_T *aixjfs2_getacl_alloc(const char *fname, acl_type_t *type)
+{
+ AIXJFS2_ACL_T *acl;
+ size_t len = 200;
+ mode_t mode;
+ int ret;
+ uint64_t ctl_flag=0;
+ TALLOC_CTX *mem_ctx;
+
+ mem_ctx = main_loop_talloc_get();
+ acl = (AIXJFS2_ACL_T *)talloc_size(mem_ctx, len);
+ if (acl == NULL) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ if(type->u64 == ACL_ANY) {
+ ctl_flag = ctl_flag | GET_ACLINFO_ONLY;
+ }
+
+ ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
+ if ((ret != 0) && (errno == ENOSPC)) {
+ len = aixacl2_getlen(acl, type) + sizeof(AIXJFS2_ACL_T);
+ DEBUG(10,("aixjfs2_getacl_alloc - acl_len:%d\n",len));
+
+ acl = (AIXJFS2_ACL_T *)talloc_size(mem_ctx, len);
+ if (acl == NULL) {
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ ret = aclx_get((char *)fname, ctl_flag, type, acl, &len, &mode);
+ }
+ if (ret != 0) {
+ DEBUG(8, ("aclx_get failed with %s\n", strerror(errno)));
+ return NULL;
+ }
+
+ return acl;
+}
+
+static BOOL aixjfs2_get_nfs4_acl(files_struct *fsp,
+ SMB4ACL_T **ppacl, BOOL *pretryPosix)
+{
+ int32_t i;
+
+ AIXJFS2_ACL_T *pacl = NULL;
+ nfs4_acl_int_t *jfs2_acl = NULL;
+ nfs4_ace_int_t *jfs2_ace = NULL;
+ acl_type_t type;
+
+ DEBUG(10,("jfs2 get_nt_acl invoked for %s\n", fsp->fsp_name));
+
+ memset(&type, 0, sizeof(acl_type_t));
+ type.u64 = ACL_NFS4;
+
+ pacl = aixjfs2_getacl_alloc(fsp->fsp_name, &type);
+ if (pacl == NULL) {
+ DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n",
+ fsp->fsp_name, strerror(errno)));
+ if (errno==ENOSYS)
+ *pretryPosix = True;
+ return False;
+ }
+
+ jfs2_acl = &pacl->jfs2_acl[0];
+ DEBUG(10, ("len: %d, version: %d, nace: %d, type: 0x%x\n",
+ jfs2_acl->aclLength, jfs2_acl->aclVersion, jfs2_acl->aclEntryN, type.u64));
+
+ *ppacl = smb_create_smb4acl();
+ if (*ppacl==NULL)
+ return False;
+
+ jfs2_ace = &jfs2_acl->aclEntry[0];
+ for (i=0; i<jfs2_acl->aclEntryN; i++) {
+ SMB_ACE4PROP_T aceprop;
+
+ DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
+ "who: %d, aclLen: %d\n", jfs2_ace->aceType, jfs2_ace->flags,
+ jfs2_ace->aceFlags, jfs2_ace->aceMask, jfs2_ace->aceWho.id, jfs2_ace->entryLen));
+
+ aceprop.aceType = jfs2_ace->aceType;
+ aceprop.aceFlags = jfs2_ace->aceFlags;
+ aceprop.aceMask = jfs2_ace->aceMask;
+ aceprop.flags = (jfs2_ace->flags&ACE4_ID_SPECIAL) ? SMB_ACE4_ID_SPECIAL : 0;
+
+ /* don't care it's real content is only 16 or 32 bit */
+ aceprop.who.id = jfs2_ace->aceWho.id;
+
+ if (smb_add_ace4(*ppacl, &aceprop)==NULL)
+ return False;
+
+ /* iterate to the next jfs2 ace */
+ jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2_ace) + jfs2_ace->entryLen);
+ }
+
+ DEBUG(10,("jfs2 get_nt_acl finished successfully\n"));
+
+ return True;
+}
+
+static size_t aixjfs2_get_nt_acl_common(files_struct *fsp,
+ uint32 security_info, SEC_DESC **ppdesc)
+{
+ SMB4ACL_T *pacl = NULL;
+ BOOL result;
+ BOOL retryPosix = False;
+
+ *ppdesc = NULL;
+ result = aixjfs2_get_nfs4_acl(fsp, &pacl, &retryPosix);
+ if (retryPosix)
+ {
+ DEBUG(10, ("retrying with posix acl...\n"));
+ return get_nt_acl(fsp, security_info, ppdesc);
+ }
+ if (result==False)
+ return 0;
+
+ return smb_get_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
+}
+
+size_t aixjfs2_fget_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp, int fd, uint32 security_info,
+ SEC_DESC **ppdesc)
+{
+ return aixjfs2_get_nt_acl_common(fsp, security_info, ppdesc);
+}
+
+size_t aixjfs2_get_nt_acl(vfs_handle_struct *handle,
+ files_struct *fsp, const char *name,
+ uint32 security_info, SEC_DESC **ppdesc)
+{
+ return aixjfs2_get_nt_acl_common(fsp, security_info, ppdesc);
+}
+
+static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type)
+{
+ aixc_acl_t *pacl;
+ AIXJFS2_ACL_T *acl;
+ SMB_ACL_T result = NULL;
+ int ret;
+
+ acl = aixjfs2_getacl_alloc(path, &type);
+
+ if (acl == NULL) {
+ DEBUG(10, ("aixjfs2_getacl failed for %s with %s\n",
+ path, strerror(errno)));
+ if (errno == 0) {
+ errno = EINVAL;
+ }
+ goto done;
+ }
+
+ pacl = &acl->aixc_acl[0];
+ DEBUG(10, ("len: %d, mode: %d\n",
+ pacl->acl_len, pacl->acl_mode));
+
+ result = aixacl_to_smbacl(pacl);
+ if (result == NULL) {
+ goto done;
+ }
+
+ done:
+ if (errno != 0) {
+ SAFE_FREE(result);
+ }
+ return result;
+}
+
+SMB_ACL_T aixjfs2_sys_acl_get_file(vfs_handle_struct *handle,
+ const char *path_p,
+ SMB_ACL_TYPE_T type)
+{
+ acl_type_t aixjfs2_type;
+
+ switch(type) {
+ case SMB_ACL_TYPE_ACCESS:
+ aixjfs2_type.u64 = ACL_AIXC;
+ break;
+ case SMB_ACL_TYPE_DEFAULT:
+ DEBUG(0, ("Got AIX JFS2 unsupported type: %d\n", type));
+ return NULL;
+ default:
+ DEBUG(0, ("Got invalid type: %d\n", type));
+ smb_panic("exiting");
+ }
+
+ return aixjfs2_get_posix_acl(path_p, aixjfs2_type);
+}
+
+SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle,
+ files_struct *fsp,
+ int fd)
+{
+ acl_type_t aixjfs2_type;
+ aixjfs2_type.u64 = ACL_AIXC;
+
+ return aixjfs2_get_posix_acl(fsp->fsp_name, aixjfs2_type);
+}
+
+/*
+ * Test whether we have that aclType support on the given path
+ */
+static int aixjfs2_query_acl_support(
+ char *filepath,
+ uint64_t aclType,
+ acl_type_t *pacl_type_info
+)
+{
+ acl_types_list_t acl_type_list;
+ size_t acl_type_list_len = sizeof(acl_types_list_t);
+ uint32_t i;
+
+ memset(&acl_type_list, 0, sizeof(acl_type_list));
+
+ if (aclx_gettypes(filepath, &acl_type_list, &acl_type_list_len)) {
+ DEBUG(2, ("aclx_gettypes failed with error %s for %s\n",
+ strerror(errno), filepath));
+ return -1;
+ }
+
+ for(i=0; i<acl_type_list.num_entries; i++) {
+ if (acl_type_list.entries[i].u64==aclType) {
+ memcpy(pacl_type_info, acl_type_list.entries + i, sizeof(acl_type_t));
+ DEBUG(10, ("found %s ACL support for %s\n",
+ pacl_type_info->acl_type, filepath));
+ return 0;
+ }
+ }
+
+ return 1; /* haven't found that ACL type. */
+}
+
+static BOOL aixjfs2_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
+{
+ SMB4ACE_T *smbace;
+ TALLOC_CTX *mem_ctx;
+ nfs4_acl_int_t *jfs2acl;
+ int32_t entryLen;
+ uint32 aclLen, naces;
+ int rc;
+ acl_type_t acltype;
+
+ DEBUG(10, ("jfs2_process_smbacl invoked on %s\n", fsp->fsp_name));
+
+ /* no need to be freed which is alloced with mem_ctx */
+ mem_ctx = main_loop_talloc_get();
+
+ entryLen = sizeof(nfs4_ace_int_t);
+ if (entryLen & 0x03)
+ entryLen = entryLen + 4 - (entryLen%4);
+
+ naces = smb_get_naces(smbacl);
+ aclLen = ACL_V4_SIZ + naces * entryLen;
+ jfs2acl = (nfs4_acl_int_t *)talloc_size(mem_ctx, aclLen);
+ if (jfs2acl==NULL) {
+ DEBUG(0, ("talloc_size failed\n"));
+ errno = ENOMEM;
+ return False;
+ }
+
+ jfs2acl->aclLength = ACL_V4_SIZ;
+ jfs2acl->aclVersion = NFS4_ACL_INT_STRUCT_VERSION;
+ jfs2acl->aclEntryN = 0;
+
+ for(smbace = smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace))
+ {
+ SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
+ nfs4_ace_int_t *jfs2_ace = (nfs4_ace_int_t *)(((char *)jfs2acl) + jfs2acl->aclLength);
+
+ memset(jfs2_ace, 0, entryLen);
+ jfs2_ace->entryLen = entryLen; /* won't store textual "who" */
+ jfs2_ace->aceType = aceprop->aceType; /* only ACCES|DENY supported by jfs2 */
+ jfs2_ace->aceFlags = aceprop->aceFlags;
+ jfs2_ace->aceMask = aceprop->aceMask;
+ jfs2_ace->flags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_ID_SPECIAL : 0;
+
+ /* don't care it's real content is only 16 or 32 bit */
+ jfs2_ace->aceWho.id = aceprop->who.id;
+
+ /* iterate to the next jfs2 ace */
+ jfs2acl->aclLength += jfs2_ace->entryLen;
+ jfs2acl->aclEntryN++;
+ }
+ SMB_ASSERT(jfs2acl->aclEntryN==naces);
+
+ /* Don't query it (again) */
+ memset(&acltype, 0, sizeof(acl_type_t));
+ acltype.u64 = ACL_NFS4;
+
+ /* won't set S_ISUID - the only one JFS2/NFS4 accepts */
+ rc = aclx_put(
+ fsp->fsp_name,
+ SET_ACL, /* set only the ACL, not mode bits */
+ acltype, /* not a pointer !!! */
+ jfs2acl,
+ jfs2acl->aclLength,
+ 0 /* don't set here mode bits */
+ );
+ if (rc) {
+ DEBUG(8, ("aclx_put failed with %s\n", strerror(errno)));
+ return False;
+ }
+
+ DEBUG(10, ("jfs2_process_smbacl succeeded.\n"));
+ return True;
+}
+
+static BOOL aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
+{
+ acl_type_t acl_type_info;
+ BOOL result = False;
+ int rc;
+
+ rc = aixjfs2_query_acl_support(
+ fsp->fsp_name,
+ ACL_NFS4,
+ &acl_type_info);
+
+ if (rc==0)
+ {
+ result = smb_set_nt_acl_nfs4(
+ fsp, security_info_sent, psd,
+ aixjfs2_process_smbacl);
+ } else if (rc==1) { /* assume POSIX ACL - by default... */
+ result = set_nt_acl(fsp, security_info_sent, psd);
+ } else
+ result = False; /* query failed */
+
+ return result;
+}
+
+BOOL aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
+{
+ return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
+}
+
+BOOL aixjfs2_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, const char *name, uint32 security_info_sent, SEC_DESC *psd)
+{
+ return aixjfs2_set_nt_acl_common(fsp, security_info_sent, psd);
+}
+
+int aixjfs2_sys_acl_set_file(vfs_handle_struct *handle,
+ const char *name,
+ SMB_ACL_TYPE_T type,
+ SMB_ACL_T theacl)
+{
+ struct acl *acl_aixc;
+ acl_type_t acl_type_info;
+ int rc;
+
+ DEBUG(10, ("aixjfs2_sys_acl_set_file invoked for %s", name));
+
+ rc = aixjfs2_query_acl_support((char *)name, ACL_AIXC, &acl_type_info);
+ if (rc) {
+ DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
+ return -1;
+ }
+
+ acl_aixc = aixacl_smb_to_aixacl(type, theacl);
+ if (!acl_aixc)
+ return -1;
+
+ rc = aclx_put(
+ (char *)name,
+ SET_ACL, /* set only the ACL, not mode bits */
+ acl_type_info,
+ acl_aixc,
+ acl_aixc->acl_len,
+ 0
+ );
+ if (rc) {
+ DEBUG(2, ("aclx_put failed with %s for %s\n",
+ strerror(errno), name));
+ return -1;
+ }
+
+ return 0;
+}
+
+int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle,
+ files_struct *fsp,
+ int fd, SMB_ACL_T theacl)
+{
+ struct acl *acl_aixc;
+ acl_type_t acl_type_info;
+ int rc;
+
+ DEBUG(10, ("aixjfs2_sys_acl_set_fd invoked for %s", fsp->fsp_name));
+
+ rc = aixjfs2_query_acl_support(fsp->fsp_name, ACL_AIXC, &acl_type_info);
+ if (rc) {
+ DEBUG(8, ("jfs2_set_nt_acl: AIXC support not found\n"));
+ return -1;
+ }
+
+ acl_aixc = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
+ if (!acl_aixc)
+ return -1;
+
+ rc = aclx_fput(
+ fd,
+ SET_ACL, /* set only the ACL, not mode bits */
+ acl_type_info,
+ acl_aixc,
+ acl_aixc->acl_len,
+ 0
+ );
+ if (rc) {
+ DEBUG(2, ("aclx_fput failed with %s for %s\n",
+ strerror(errno), fsp->fsp_name));
+ return -1;
+ }
+
+ return 0;
+}
+
+int aixjfs2_sys_acl_delete_def_file(vfs_handle_struct *handle,
+ const char *path)
+{
+ /* Not available under AIXC ACL */
+ /* Don't report here any error otherwise */
+ /* upper layer will break the normal execution */
+ return 0;
+}
+
+
+/* VFS operations structure */
+
+static vfs_op_tuple aixjfs2_ops[] =
+{
+ {SMB_VFS_OP(aixjfs2_fget_nt_acl),
+ SMB_VFS_OP_FGET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_get_nt_acl),
+ SMB_VFS_OP_GET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_fset_nt_acl),
+ SMB_VFS_OP_FSET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_set_nt_acl),
+ SMB_VFS_OP_SET_NT_ACL,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_sys_acl_get_file),
+ SMB_VFS_OP_SYS_ACL_GET_FILE,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_sys_acl_get_fd),
+ SMB_VFS_OP_SYS_ACL_GET_FD,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_sys_acl_set_file),
+ SMB_VFS_OP_SYS_ACL_SET_FILE,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_sys_acl_set_fd),
+ SMB_VFS_OP_SYS_ACL_SET_FD,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(aixjfs2_sys_acl_delete_def_file),
+ SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
+ SMB_VFS_LAYER_TRANSPARENT},
+
+ {SMB_VFS_OP(NULL),
+ SMB_VFS_OP_NOOP,
+ SMB_VFS_LAYER_NOOP}
+};
+
+NTSTATUS vfs_aixacl2_init(void);
+NTSTATUS vfs_aixacl2_init(void)
+{
+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME,
+ aixjfs2_ops);
+}
git.samba.org / sfrench / samba-autobuild / .git / blobdiff