/* * 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 3 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, see <http://www.gnu.org/licenses/>. */ #include "includes.h" #include "system/filesys.h" #include "smbd/smbd.h" #include "nfs4_acls.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_VFS #define AIXACL2_MODULE_NAME "aixacl2" 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 = talloc_tos(); 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(const char *name, 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", name)); memset(&type, 0, sizeof(acl_type_t)); type.u64 = ACL_NFS4; pacl = aixjfs2_getacl_alloc(name, &type); if (pacl == NULL) { DEBUG(9, ("aixjfs2_getacl_alloc failed for %s with %s\n", 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 NTSTATUS aixjfs2_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info, struct security_descriptor **ppdesc) { SMB4ACL_T *pacl = NULL; bool result; bool retryPosix = False; *ppdesc = NULL; result = aixjfs2_get_nfs4_acl(fsp->fsp_name->base_name, &pacl, &retryPosix); if (retryPosix) { DEBUG(10, ("retrying with posix acl...\n")); return posix_fget_nt_acl(fsp, security_info, ppdesc); } if (result==False) return NT_STATUS_ACCESS_DENIED; return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl); } static NTSTATUS aixjfs2_get_nt_acl(vfs_handle_struct *handle, const char *name, uint32 security_info, struct security_descriptor **ppdesc) { SMB4ACL_T *pacl = NULL; bool result; bool retryPosix = False; *ppdesc = NULL; result = aixjfs2_get_nfs4_acl(name, &pacl, &retryPosix); if (retryPosix) { DEBUG(10, ("retrying with posix acl...\n")); return posix_get_nt_acl(handle->conn, name, security_info, ppdesc); } if (result==False) return NT_STATUS_ACCESS_DENIED; return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl); } 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) { acl_type_t aixjfs2_type; aixjfs2_type.u64 = ACL_AIXC; return aixjfs2_get_posix_acl(fsp->fsp_name->base_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_str_dbg(fsp))); /* no need to be freed which is alloced with mem_ctx */ mem_ctx = talloc_tos(); 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->base_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 NTSTATUS aixjfs2_set_nt_acl_common(files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd) { acl_type_t acl_type_info; NTSTATUS result = NT_STATUS_ACCESS_DENIED; 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 = map_nt_error_from_unix(errno); /* query failed */ return result; } NTSTATUS aixjfs2_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *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, 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_str_dbg(fsp))); rc = aixjfs2_query_acl_support(fsp->fsp_name->base_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( fsp->fh->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_str_dbg(fsp))); 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; } static struct vfs_fn_pointers vfs_aixacl2_fns = { .fget_nt_acl = aixjfs2_fget_nt_acl, .get_nt_acl = aixjfs2_get_nt_acl, .fset_nt_acl = aixjfs2_fset_nt_acl, .sys_acl_get_file = aixjfs2_sys_acl_get_file, .sys_acl_get_fd = aixjfs2_sys_acl_get_fd, .sys_acl_set_file = aixjfs2_sys_acl_set_file, .sys_acl_set_fd = aixjfs2_sys_acl_set_fd, .sys_acl_delete_def_file = aixjfs2_sys_acl_delete_def_file }; NTSTATUS vfs_aixacl2_init(void); NTSTATUS vfs_aixacl2_init(void) { return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME, &vfs_aixacl2_fns); }