From 8daa83a594a2e98f39d764422bfbdbc62c9efd44 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 19:20:00 +0200 Subject: Adding upstream version 2:4.20.0+dfsg. Signed-off-by: Daniel Baumann --- source3/modules/vfs_aixacl2.c | 480 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 480 insertions(+) create mode 100644 source3/modules/vfs_aixacl2.c (limited to 'source3/modules/vfs_aixacl2.c') diff --git a/source3/modules/vfs_aixacl2.c b/source3/modules/vfs_aixacl2.c new file mode 100644 index 0000000..923b54f --- /dev/null +++ b/source3/modules/vfs_aixacl2.c @@ -0,0 +1,480 @@ +/* + * 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 . + */ + +#include "includes.h" +#include "system/filesys.h" +#include "smbd/smbd.h" +#include "nfs4_acls.h" +#include "vfs_aixacl_util.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_VFS + +#define AIXACL2_MODULE_NAME "aixacl2" + +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(TALLOC_CTX *mem_ctx, const char *name, + struct 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(mem_ctx); + if (*ppacl==NULL) + return False; + + jfs2_ace = &jfs2_acl->aclEntry[0]; + for (i=0; iaclEntryN; 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_t security_info, + TALLOC_CTX *mem_ctx, + struct security_descriptor **ppdesc) +{ + NTSTATUS status; + struct SMB4ACL_T *pacl = NULL; + bool result; + bool retryPosix = False; + TALLOC_CTX *frame = talloc_stackframe(); + + *ppdesc = NULL; + result = aixjfs2_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl, + &retryPosix); + if (retryPosix) + { + TALLOC_FREE(frame); + DEBUG(10, ("retrying with posix acl...\n")); + return posix_fget_nt_acl(fsp, security_info, + mem_ctx, ppdesc); + } + if (result==False) { + TALLOC_FREE(frame); + return NT_STATUS_ACCESS_DENIED; + } + + status = smb_fget_nt_acl_nfs4( + fsp, NULL, security_info, mem_ctx, ppdesc, pacl); + TALLOC_FREE(frame); + return status; +} + +static int aixjfs2_sys_acl_blob_get_fd(vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob) +{ + struct SMB4ACL_T *pacl = NULL; + bool result; + bool retryPosix = False; + + result = aixjfs2_get_nfs4_acl(mem_ctx, fsp->fsp_name->base_name, &pacl, + &retryPosix); + if (retryPosix) + { + return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx, blob_description, blob); + } + + /* Now way to linarlise NFS4 ACLs at the moment, but the NT ACL is pretty close in this case */ + errno = ENOSYS; + return -1; +} + +static SMB_ACL_T aixjfs2_get_posix_acl(const char *path, acl_type_t type, TALLOC_CTX *mem_ctx) +{ + 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, mem_ctx); + if (result == NULL) { + goto done; + } + + done: + if (errno != 0) { + TALLOC_FREE(result); + } + return result; +} + +SMB_ACL_T aixjfs2_sys_acl_get_fd(vfs_handle_struct *handle, + files_struct *fsp, + SMB_ACL_TYPE_T type, + TALLOC_CTX *mem_ctx) +{ + 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(fsp->fsp_name->base_name, + aixjfs2_type, mem_ctx); +} + +/* + * 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; iacl_type, filepath)); + return 0; + } + } + + return 1; /* haven't found that ACL type. */ +} + +static bool aixjfs2_process_smbacl(vfs_handle_struct *handle, + files_struct *fsp, + struct SMB4ACL_T *smbacl) +{ + struct SMB4ACE_T *smbace; + TALLOC_CTX *mem_ctx; + nfs4_acl_int_t *jfs2acl; + int32_t entryLen; + uint32_t 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 ACCESS|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(vfs_handle_struct *handle, files_struct *fsp, uint32_t 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->base_name, + ACL_NFS4, + &acl_type_info); + + if (rc==0) + { + result = smb_set_nt_acl_nfs4(handle, + fsp, NULL, 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_t security_info_sent, const struct security_descriptor *psd) +{ + return aixjfs2_set_nt_acl_common(handle, fsp, security_info_sent, psd); +} + +int aixjfs2_sys_acl_set_fd(vfs_handle_struct *handle, + files_struct *fsp, + 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_fd invoked for %s\n", 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(type, theacl); + if (!acl_aixc) + return -1; + + if (fsp->fsp_flags.is_pathref) { + /* + * This is no longer a handle based call. + */ + return aclx_put(fsp->fsp_name->base_name, + SET_ACL, + acl_type_info, + acl_aixc, + acl_aixc->acl_len, + 0); + } + + rc = aclx_fput( + fsp_get_io_fd(fsp), + 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_fd(vfs_handle_struct *handle, + files_struct *fsp) +{ + /* 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 = { + .stat_fn = nfs4_acl_stat, + .fstat_fn = nfs4_acl_fstat, + .lstat_fn = nfs4_acl_lstat, + .fstatat_fn = nfs4_acl_fstatat, + .fget_nt_acl_fn = aixjfs2_fget_nt_acl, + .fset_nt_acl_fn = aixjfs2_fset_nt_acl, + .sys_acl_get_fd_fn = aixjfs2_sys_acl_get_fd, + .sys_acl_blob_get_fd_fn = aixjfs2_sys_acl_blob_get_fd, + .sys_acl_set_fd_fn = aixjfs2_sys_acl_set_fd, + .sys_acl_delete_def_fd_fn = aixjfs2_sys_acl_delete_def_fd +}; + +static_decl_vfs; +NTSTATUS vfs_aixacl2_init(TALLOC_CTX *ctx) +{ + return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, AIXACL2_MODULE_NAME, + &vfs_aixacl2_fns); +} -- cgit v1.2.3