/* * Convert AFS acls to NT acls and vice versa. * * Copyright (C) Volker Lendecke, 2003 * * 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" #undef DBGC_CLASS #define DBGC_CLASS DBGC_VFS #include #include #include #include #include #define MAXSIZE 2048 extern const DOM_SID global_sid_World; extern const DOM_SID global_sid_Builtin_Administrators; extern const DOM_SID global_sid_Builtin_Backup_Operators; extern const DOM_SID global_sid_Authenticated_Users; extern const DOM_SID global_sid_NULL; static char space_replacement = '%'; /* Do we expect SIDs as pts names? */ static bool sidpts; extern int afs_syscall(int, char *, int, char *, int); struct afs_ace { bool positive; char *name; DOM_SID sid; enum lsa_SidType type; uint32 rights; struct afs_ace *next; }; struct afs_acl { TALLOC_CTX *ctx; int type; int num_aces; struct afs_ace *acelist; }; struct afs_iob { char *in, *out; uint16 in_size, out_size; }; static bool init_afs_acl(struct afs_acl *acl) { ZERO_STRUCT(*acl); acl->ctx = talloc_init("afs_acl"); if (acl->ctx == NULL) { DEBUG(10, ("Could not init afs_acl")); return False; } return True; } static void free_afs_acl(struct afs_acl *acl) { if (acl->ctx != NULL) talloc_destroy(acl->ctx); acl->ctx = NULL; acl->num_aces = 0; acl->acelist = NULL; } static struct afs_ace *clone_afs_ace(TALLOC_CTX *mem_ctx, struct afs_ace *ace) { struct afs_ace *result = TALLOC_P(mem_ctx, struct afs_ace); if (result == NULL) return NULL; *result = *ace; result->next = NULL; result->name = talloc_strdup(mem_ctx, ace->name); if (result->name == NULL) { return NULL; } return result; } static struct afs_ace *new_afs_ace(TALLOC_CTX *mem_ctx, bool positive, const char *name, uint32 rights) { DOM_SID sid; enum lsa_SidType type; struct afs_ace *result; if (strcmp(name, "system:administrators") == 0) { sid_copy(&sid, &global_sid_Builtin_Administrators); type = SID_NAME_ALIAS; } else if (strcmp(name, "system:anyuser") == 0) { sid_copy(&sid, &global_sid_World); type = SID_NAME_ALIAS; } else if (strcmp(name, "system:authuser") == 0) { sid_copy(&sid, &global_sid_Authenticated_Users); type = SID_NAME_WKN_GRP; } else if (strcmp(name, "system:backup") == 0) { sid_copy(&sid, &global_sid_Builtin_Backup_Operators); type = SID_NAME_ALIAS; } else if (sidpts) { /* All PTS users/groups are expressed as SIDs */ sid_copy(&sid, &global_sid_NULL); type = SID_NAME_UNKNOWN; if (string_to_sid(&sid, name)) { const char *user, *domain; /* We have to find the type, look up the SID */ lookup_sid(talloc_tos(), &sid, &domain, &user, &type); } } else { const char *domain, *uname; char *p; p = strchr_m(name, *lp_winbind_separator()); if (p != NULL) { *p = '\\'; } if (!lookup_name(talloc_tos(), name, LOOKUP_NAME_ALL, &domain, &uname, &sid, &type)) { DEBUG(10, ("Could not find AFS user %s\n", name)); sid_copy(&sid, &global_sid_NULL); type = SID_NAME_UNKNOWN; } } result = TALLOC_P(mem_ctx, struct afs_ace); if (result == NULL) { DEBUG(0, ("Could not talloc AFS ace\n")); return NULL; } result->name = talloc_strdup(mem_ctx, name); if (result->name == NULL) { DEBUG(0, ("Could not talloc AFS ace name\n")); return NULL; } result->sid = sid; result->type = type; result->positive = positive; result->rights = rights; return result; } static void add_afs_ace(struct afs_acl *acl, bool positive, const char *name, uint32 rights) { struct afs_ace *ace; for (ace = acl->acelist; ace != NULL; ace = ace->next) { if ((ace->positive == positive) && (strequal(ace->name, name))) { ace->rights |= rights; return; } } ace = new_afs_ace(acl->ctx, positive, name, rights); ace->next = acl->acelist; acl->acelist = ace; acl->num_aces += 1; DEBUG(10, ("add_afs_ace: Added %s entry for %s with rights %d\n", ace->positive?"positive":"negative", ace->name, ace->rights)); return; } /* AFS ACLs in string form are a long string of fields delimited with \n. * * First line: Number of positive entries * Second line: Number of negative entries * Third and following lines: The entries themselves * * An ACE is a line of two fields, delimited by \t. * * First field: Name * Second field: Rights */ static bool parse_afs_acl(struct afs_acl *acl, const char *acl_str) { int nplus, nminus; int aces; char str[MAXSIZE+1]; char *p = str; strncpy(str, acl_str, MAXSIZE); if (sscanf(p, "%d", &nplus) != 1) return False; DEBUG(10, ("Found %d positive entries\n", nplus)); if ((p = strchr(p, '\n')) == NULL) return False; p += 1; if (sscanf(p, "%d", &nminus) != 1) return False; DEBUG(10, ("Found %d negative entries\n", nminus)); if ((p = strchr(p, '\n')) == NULL) return False; p += 1; for (aces = nplus+nminus; aces > 0; aces--) { const char *namep; fstring name; uint32 rights; char *space; namep = p; if ((p = strchr(p, '\t')) == NULL) return False; *p = '\0'; p += 1; if (sscanf(p, "%d", &rights) != 1) return False; if ((p = strchr(p, '\n')) == NULL) return False; p += 1; fstrcpy(name, namep); while ((space = strchr_m(name, space_replacement)) != NULL) *space = ' '; add_afs_ace(acl, nplus>0, name, rights); nplus -= 1; } return True; } static bool unparse_afs_acl(struct afs_acl *acl, char *acl_str) { /* TODO: String length checks!!!! */ int positives = 0; int negatives = 0; fstring line; *acl_str = 0; struct afs_ace *ace = acl->acelist; while (ace != NULL) { if (ace->positive) positives++; else negatives++; ace = ace->next; } fstr_sprintf(line, "%d\n", positives); safe_strcat(acl_str, line, MAXSIZE); fstr_sprintf(line, "%d\n", negatives); safe_strcat(acl_str, line, MAXSIZE); ace = acl->acelist; while (ace != NULL) { fstr_sprintf(line, "%s\t%d\n", ace->name, ace->rights); safe_strcat(acl_str, line, MAXSIZE); ace = ace->next; } return True; } static uint32 afs_to_nt_file_rights(uint32 rights) { uint32 result = 0; if (rights & PRSFS_READ) result |= FILE_READ_DATA | FILE_READ_EA | FILE_EXECUTE | FILE_READ_ATTRIBUTES | READ_CONTROL_ACCESS | SYNCHRONIZE_ACCESS; if (rights & PRSFS_WRITE) result |= FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | FILE_APPEND_DATA; if (rights & PRSFS_LOCK) result |= WRITE_OWNER_ACCESS; if (rights & PRSFS_DELETE) result |= DELETE_ACCESS; return result; } static void afs_to_nt_dir_rights(uint32 afs_rights, uint32 *nt_rights, uint8 *flag) { *nt_rights = 0; *flag = SEC_ACE_FLAG_OBJECT_INHERIT | SEC_ACE_FLAG_CONTAINER_INHERIT; if (afs_rights & PRSFS_INSERT) *nt_rights |= FILE_ADD_FILE | FILE_ADD_SUBDIRECTORY; if (afs_rights & PRSFS_LOOKUP) *nt_rights |= FILE_READ_DATA | FILE_READ_EA | FILE_EXECUTE | FILE_READ_ATTRIBUTES | READ_CONTROL_ACCESS | SYNCHRONIZE_ACCESS; if (afs_rights & PRSFS_WRITE) *nt_rights |= FILE_WRITE_ATTRIBUTES | FILE_WRITE_DATA | FILE_APPEND_DATA | FILE_WRITE_EA; if ((afs_rights & (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE)) == (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE)) *nt_rights |= FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | GENERIC_WRITE_ACCESS; if (afs_rights & PRSFS_DELETE) *nt_rights |= DELETE_ACCESS; if (afs_rights & PRSFS_ADMINISTER) *nt_rights |= FILE_DELETE_CHILD | WRITE_DAC_ACCESS | WRITE_OWNER_ACCESS; if ( (afs_rights & PRSFS_LOOKUP) == (afs_rights & (PRSFS_LOOKUP|PRSFS_READ)) ) { /* Only lookup right */ *flag = SEC_ACE_FLAG_CONTAINER_INHERIT; } return; } #define AFS_FILE_RIGHTS (PRSFS_READ|PRSFS_WRITE|PRSFS_LOCK) #define AFS_DIR_RIGHTS (PRSFS_INSERT|PRSFS_LOOKUP|PRSFS_DELETE|PRSFS_ADMINISTER) static void split_afs_acl(struct afs_acl *acl, struct afs_acl *dir_acl, struct afs_acl *file_acl) { struct afs_ace *ace; init_afs_acl(dir_acl); init_afs_acl(file_acl); for (ace = acl->acelist; ace != NULL; ace = ace->next) { if (ace->rights & AFS_FILE_RIGHTS) { add_afs_ace(file_acl, ace->positive, ace->name, ace->rights & AFS_FILE_RIGHTS); } if (ace->rights & AFS_DIR_RIGHTS) { add_afs_ace(dir_acl, ace->positive, ace->name, ace->rights & AFS_DIR_RIGHTS); } } return; } static bool same_principal(struct afs_ace *x, struct afs_ace *y) { return ( (x->positive == y->positive) && (sid_compare(&x->sid, &y->sid) == 0) ); } static void merge_afs_acls(struct afs_acl *dir_acl, struct afs_acl *file_acl, struct afs_acl *target) { struct afs_ace *ace; init_afs_acl(target); for (ace = dir_acl->acelist; ace != NULL; ace = ace->next) { struct afs_ace *file_ace; bool found = False; for (file_ace = file_acl->acelist; file_ace != NULL; file_ace = file_ace->next) { if (!same_principal(ace, file_ace)) continue; add_afs_ace(target, ace->positive, ace->name, ace->rights | file_ace->rights); found = True; break; } if (!found) add_afs_ace(target, ace->positive, ace->name, ace->rights); } for (ace = file_acl->acelist; ace != NULL; ace = ace->next) { struct afs_ace *dir_ace; bool already_seen = False; for (dir_ace = dir_acl->acelist; dir_ace != NULL; dir_ace = dir_ace->next) { if (!same_principal(ace, dir_ace)) continue; already_seen = True; break; } if (!already_seen) add_afs_ace(target, ace->positive, ace->name, ace->rights); } } #define PERMS_READ 0x001200a9 #define PERMS_CHANGE 0x001301bf #define PERMS_FULL 0x001f01ff static struct static_dir_ace_mapping { uint8 type; uint8 flags; uint32 mask; uint32 afs_rights; } ace_mappings[] = { /* Full control */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT, PERMS_FULL, 127 /* rlidwka */ }, /* Change (write) */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT, PERMS_CHANGE, 63 /* rlidwk */ }, /* Read (including list folder content) */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT, PERMS_READ, 9 /* rl */ }, /* Read without list folder content -- same as "l" */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT, 0x00120089, 8 /* l */ }, /* some stupid workaround for preventing fallbacks */ { 0, 0x3, 0x0012019F, 9 /* rl */ }, { 0, 0x13, PERMS_FULL, 127 /* full */ }, /* read, delete and execute access plus synchronize */ { 0, 0x3, 0x001300A9, 9 /* should be rdl, set to rl */}, /* classical read list */ { 0, 0x13, 0x001200A9, 9 /* rl */}, /* almost full control, no delete */ { 0, 0x13, PERMS_CHANGE, 63 /* rwidlk */}, /* List folder */ { 0, SEC_ACE_FLAG_CONTAINER_INHERIT, PERMS_READ, 8 /* l */ }, /* FULL without inheritance -- in all cases here we also get the corresponding INHERIT_ONLY ACE in the same ACL */ { 0, 0, PERMS_FULL, 127 /* rlidwka */ }, /* FULL inherit only -- counterpart to previous one */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY, PERMS_FULL | GENERIC_RIGHT_WRITE_ACCESS, 127 /* rlidwka */ }, /* CHANGE without inheritance -- in all cases here we also get the corresponding INHERIT_ONLY ACE in the same ACL */ { 0, 0, PERMS_CHANGE, 63 /* rlidwk */ }, /* CHANGE inherit only -- counterpart to previous one */ { 0, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY, PERMS_CHANGE | GENERIC_RIGHT_WRITE_ACCESS, 63 /* rlidwk */ }, /* End marker, hopefully there's no afs right 9999 :-) */ { 0, 0, 0, 9999 } }; static uint32 nt_to_afs_dir_rights(const char *filename, const struct security_ace *ace) { uint32 result = 0; uint32 rights = ace->access_mask; uint8 flags = ace->flags; struct static_dir_ace_mapping *m; for (m = &ace_mappings[0]; m->afs_rights != 9999; m++) { if ( (ace->type == m->type) && (ace->flags == m->flags) && (ace->access_mask == m->mask) ) return m->afs_rights; } DEBUG(1, ("AFSACL FALLBACK: 0x%X 0x%X 0x%X %s %X\n", ace->type, ace->flags, ace->access_mask, filename, rights)); if (rights & (GENERIC_ALL_ACCESS|WRITE_DAC_ACCESS)) { result |= PRSFS_READ | PRSFS_WRITE | PRSFS_INSERT | PRSFS_LOOKUP | PRSFS_DELETE | PRSFS_LOCK | PRSFS_ADMINISTER; } if (rights & (GENERIC_READ_ACCESS|FILE_READ_DATA)) { result |= PRSFS_LOOKUP; if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) { result |= PRSFS_READ; } } if (rights & (GENERIC_WRITE_ACCESS|FILE_WRITE_DATA)) { result |= PRSFS_INSERT | PRSFS_DELETE; if (flags & SEC_ACE_FLAG_OBJECT_INHERIT) { result |= PRSFS_WRITE | PRSFS_LOCK; } } return result; } static uint32 nt_to_afs_file_rights(const char *filename, const struct security_ace *ace) { uint32 result = 0; uint32 rights = ace->access_mask; if (rights & (GENERIC_READ_ACCESS|FILE_READ_DATA)) { result |= PRSFS_READ; } if (rights & (GENERIC_WRITE_ACCESS|FILE_WRITE_DATA)) { result |= PRSFS_WRITE | PRSFS_LOCK; } return result; } static size_t afs_to_nt_acl_common(struct afs_acl *afs_acl, SMB_STRUCT_STAT *psbuf, uint32 security_info, struct security_descriptor **ppdesc) { struct security_ace *nt_ace_list; DOM_SID owner_sid, group_sid; struct security_acl *psa = NULL; int good_aces; size_t sd_size; TALLOC_CTX *mem_ctx = talloc_tos(); struct afs_ace *afs_ace; uid_to_sid(&owner_sid, psbuf->st_ex_uid); gid_to_sid(&group_sid, psbuf->st_ex_gid); if (afs_acl->num_aces) { nt_ace_list = TALLOC_ARRAY(mem_ctx, struct security_ace, afs_acl->num_aces); if (nt_ace_list == NULL) return 0; } else { nt_ace_list = NULL; } afs_ace = afs_acl->acelist; good_aces = 0; while (afs_ace != NULL) { uint32_t nt_rights; uint8 flag = SEC_ACE_FLAG_OBJECT_INHERIT | SEC_ACE_FLAG_CONTAINER_INHERIT; if (afs_ace->type == SID_NAME_UNKNOWN) { DEBUG(10, ("Ignoring unknown name %s\n", afs_ace->name)); afs_ace = afs_ace->next; continue; } if (S_ISDIR(psbuf->st_ex_mode)) afs_to_nt_dir_rights(afs_ace->rights, &nt_rights, &flag); else nt_rights = afs_to_nt_file_rights(afs_ace->rights); init_sec_ace(&nt_ace_list[good_aces++], &(afs_ace->sid), SEC_ACE_TYPE_ACCESS_ALLOWED, nt_rights, flag); afs_ace = afs_ace->next; } psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION, good_aces, nt_ace_list); if (psa == NULL) return 0; *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE, (security_info & OWNER_SECURITY_INFORMATION) ? &owner_sid : NULL, (security_info & GROUP_SECURITY_INFORMATION) ? &group_sid : NULL, NULL, psa, &sd_size); return sd_size; } static size_t afs_to_nt_acl(struct afs_acl *afs_acl, struct connection_struct *conn, struct smb_filename *smb_fname, uint32 security_info, struct security_descriptor **ppdesc) { int ret; /* Get the stat struct for the owner info. */ if (lp_posix_pathnames()) { ret = SMB_VFS_LSTAT(conn, smb_fname); } else { ret = SMB_VFS_STAT(conn, smb_fname); } if (ret == -1) { return 0; } return afs_to_nt_acl_common(afs_acl, &smb_fname->st, security_info, ppdesc); } static size_t afs_fto_nt_acl(struct afs_acl *afs_acl, struct files_struct *fsp, uint32 security_info, struct security_descriptor **ppdesc) { SMB_STRUCT_STAT sbuf; if (fsp->is_directory || fsp->fh->fd == -1) { /* Get the stat struct for the owner info. */ return afs_to_nt_acl(afs_acl, fsp->conn, fsp->fsp_name, security_info, ppdesc); } if(SMB_VFS_FSTAT(fsp, &sbuf) != 0) { return 0; } return afs_to_nt_acl_common(afs_acl, &sbuf, security_info, ppdesc); } static bool mappable_sid(const DOM_SID *sid) { DOM_SID domain_sid; if (sid_compare(sid, &global_sid_Builtin_Administrators) == 0) return True; if (sid_compare(sid, &global_sid_World) == 0) return True; if (sid_compare(sid, &global_sid_Authenticated_Users) == 0) return True; if (sid_compare(sid, &global_sid_Builtin_Backup_Operators) == 0) return True; string_to_sid(&domain_sid, "S-1-5-21"); if (sid_compare_domain(sid, &domain_sid) == 0) return True; return False; } static bool nt_to_afs_acl(const char *filename, uint32 security_info_sent, const struct security_descriptor *psd, uint32 (*nt_to_afs_rights)(const char *filename, const struct security_ace *ace), struct afs_acl *afs_acl) { const struct security_acl *dacl; int i; /* Currently we *only* look at the dacl */ if (((security_info_sent & DACL_SECURITY_INFORMATION) == 0) || (psd->dacl == NULL)) return True; if (!init_afs_acl(afs_acl)) return False; dacl = psd->dacl; for (i = 0; i < dacl->num_aces; i++) { const struct security_ace *ace = &(dacl->aces[i]); const char *dom_name, *name; enum lsa_SidType name_type; char *p; if (ace->type != SEC_ACE_TYPE_ACCESS_ALLOWED) { /* First cut: Only positive ACEs */ return False; } if (!mappable_sid(&ace->trustee)) { DEBUG(10, ("Ignoring unmappable SID %s\n", sid_string_dbg(&ace->trustee))); continue; } if (sid_compare(&ace->trustee, &global_sid_Builtin_Administrators) == 0) { name = "system:administrators"; } else if (sid_compare(&ace->trustee, &global_sid_World) == 0) { name = "system:anyuser"; } else if (sid_compare(&ace->trustee, &global_sid_Authenticated_Users) == 0) { name = "system:authuser"; } else if (sid_compare(&ace->trustee, &global_sid_Builtin_Backup_Operators) == 0) { name = "system:backup"; } else { if (!lookup_sid(talloc_tos(), &ace->trustee, &dom_name, &name, &name_type)) { DEBUG(1, ("AFSACL: Could not lookup SID %s on file %s\n", sid_string_dbg(&ace->trustee), filename)); continue; } if ( (name_type == SID_NAME_USER) || (name_type == SID_NAME_DOM_GRP) || (name_type == SID_NAME_ALIAS) ) { char *tmp; tmp = talloc_asprintf(talloc_tos(), "%s%s%s", dom_name, lp_winbind_separator(), name); if (tmp == NULL) { return False; } strlower_m(tmp); name = tmp; } if (sidpts) { /* Expect all users/groups in pts as SIDs */ name = talloc_strdup( talloc_tos(), sid_string_tos(&ace->trustee)); if (name == NULL) { return False; } } } while ((p = strchr_m(name, ' ')) != NULL) *p = space_replacement; add_afs_ace(afs_acl, True, name, nt_to_afs_rights(filename, ace)); } return True; } static bool afs_get_afs_acl(char *filename, struct afs_acl *acl) { struct afs_iob iob; int ret; char space[MAXSIZE]; DEBUG(5, ("afs_get_afs_acl: %s\n", filename)); iob.in_size = 0; iob.out_size = MAXSIZE; iob.in = iob.out = space; ret = afs_syscall(AFSCALL_PIOCTL, filename, VIOCGETAL, (char *)&iob, 0); if (ret) { DEBUG(1, ("got error from PIOCTL: %d\n", ret)); return False; } if (!init_afs_acl(acl)) return False; if (!parse_afs_acl(acl, space)) { DEBUG(1, ("Could not parse AFS acl\n")); free_afs_acl(acl); return False; } return True; } /* For setting an AFS ACL we have to take care of the ACEs we could * not properly map to SIDs. Merge all of them into the new ACL. */ static void merge_unknown_aces(struct afs_acl *src, struct afs_acl *dst) { struct afs_ace *ace; for (ace = src->acelist; ace != NULL; ace = ace->next) { struct afs_ace *copy; if (ace->type != SID_NAME_UNKNOWN) { DEBUG(10, ("Not merging known ACE for %s\n", ace->name)); continue; } DEBUG(10, ("Merging unknown ACE for %s\n", ace->name)); copy = clone_afs_ace(dst->ctx, ace); if (copy == NULL) { DEBUG(0, ("Could not clone ACE for %s\n", ace->name)); continue; } copy->next = dst->acelist; dst->acelist = copy; dst->num_aces += 1; } } static NTSTATUS afs_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd) { struct afs_acl old_afs_acl, new_afs_acl; struct afs_acl dir_acl, file_acl; char acl_string[2049]; struct afs_iob iob; int ret = -1; char *name = NULL; const char *fileacls; fileacls = lp_parm_const_string(SNUM(handle->conn), "afsacl", "fileacls", "yes"); sidpts = lp_parm_bool(SNUM(handle->conn), "afsacl", "sidpts", False); ZERO_STRUCT(old_afs_acl); ZERO_STRUCT(new_afs_acl); ZERO_STRUCT(dir_acl); ZERO_STRUCT(file_acl); name = talloc_strdup(talloc_tos(), fsp->fsp_name->base_name); if (!name) { return NT_STATUS_NO_MEMORY; } if (!fsp->is_directory) { /* We need to get the name of the directory containing the * file, this is where the AFS acls live */ char *p = strrchr(name, '/'); if (p != NULL) { *p = '\0'; } else { name = talloc_strdup(talloc_tos(), "."); if (!name) { return NT_STATUS_NO_MEMORY; } } } if (!afs_get_afs_acl(name, &old_afs_acl)) { DEBUG(3, ("Could not get old ACL of %s\n", fsp_str_dbg(fsp))); goto done; } split_afs_acl(&old_afs_acl, &dir_acl, &file_acl); if (fsp->is_directory) { if (!strequal(fileacls, "yes")) { /* Throw away file acls, we depend on the * inheritance ACEs that also give us file * permissions */ free_afs_acl(&file_acl); } free_afs_acl(&dir_acl); if (!nt_to_afs_acl(fsp->fsp_name->base_name, security_info_sent, psd, nt_to_afs_dir_rights, &dir_acl)) goto done; } else { if (strequal(fileacls, "no")) { ret = -1; goto done; } if (strequal(fileacls, "ignore")) { ret = 0; goto done; } free_afs_acl(&file_acl); if (!nt_to_afs_acl(fsp->fsp_name->base_name, security_info_sent, psd, nt_to_afs_file_rights, &file_acl)) goto done; } merge_afs_acls(&dir_acl, &file_acl, &new_afs_acl); merge_unknown_aces(&old_afs_acl, &new_afs_acl); unparse_afs_acl(&new_afs_acl, acl_string); iob.in = acl_string; iob.in_size = 1+strlen(iob.in); iob.out = NULL; iob.out_size = 0; DEBUG(10, ("trying to set acl '%s' on file %s\n", iob.in, name)); ret = afs_syscall(AFSCALL_PIOCTL, name, VIOCSETAL, (char *)&iob, 0); if (ret != 0) { DEBUG(10, ("VIOCSETAL returned %d\n", ret)); } done: free_afs_acl(&dir_acl); free_afs_acl(&file_acl); free_afs_acl(&old_afs_acl); free_afs_acl(&new_afs_acl); return (ret == 0) ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED; } static NTSTATUS afsacl_fget_nt_acl(struct vfs_handle_struct *handle, struct files_struct *fsp, uint32 security_info, struct security_descriptor **ppdesc) { struct afs_acl acl; size_t sd_size; DEBUG(5, ("afsacl_fget_nt_acl: %s\n", fsp_str_dbg(fsp))); sidpts = lp_parm_bool(SNUM(fsp->conn), "afsacl", "sidpts", False); if (!afs_get_afs_acl(fsp->fsp_name->base_name, &acl)) { return NT_STATUS_ACCESS_DENIED; } sd_size = afs_fto_nt_acl(&acl, fsp, security_info, ppdesc); free_afs_acl(&acl); return (sd_size != 0) ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED; } static NTSTATUS afsacl_get_nt_acl(struct vfs_handle_struct *handle, const char *name, uint32 security_info, struct security_descriptor **ppdesc) { struct afs_acl acl; size_t sd_size; struct smb_filename *smb_fname = NULL; NTSTATUS status; DEBUG(5, ("afsacl_get_nt_acl: %s\n", name)); sidpts = lp_parm_bool(SNUM(handle->conn), "afsacl", "sidpts", False); if (!afs_get_afs_acl(name, &acl)) { return NT_STATUS_ACCESS_DENIED; } status = create_synthetic_smb_fname(talloc_tos(), name, NULL, NULL, &smb_fname); if (!NT_STATUS_IS_OK(status)) { free_afs_acl(&acl); return status; } sd_size = afs_to_nt_acl(&acl, handle->conn, smb_fname, security_info, ppdesc); TALLOC_FREE(smb_fname); free_afs_acl(&acl); return (sd_size != 0) ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED; } NTSTATUS afsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd) { return afs_set_nt_acl(handle, fsp, security_info_sent, psd); } static int afsacl_connect(vfs_handle_struct *handle, const char *service, const char *user) { const char *spc; int ret = SMB_VFS_NEXT_CONNECT(handle, service, user); if (ret < 0) { return ret; } spc = lp_parm_const_string(SNUM(handle->conn), "afsacl", "space", "%"); if (spc != NULL) space_replacement = spc[0]; return 0; } static struct vfs_fn_pointers vfs_afsacl_fns = { .connect_fn = afsacl_connect, .fget_nt_acl = afsacl_fget_nt_acl, .get_nt_acl = afsacl_get_nt_acl, .fset_nt_acl = afsacl_fset_nt_acl }; NTSTATUS vfs_afsacl_init(void); NTSTATUS vfs_afsacl_init(void) { return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "afsacl", &vfs_afsacl_fns); }