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Diffstat (limited to 'source3/modules/nfs4_acls.c')
-rw-r--r--source3/modules/nfs4_acls.c187
1 files changed, 151 insertions, 36 deletions
diff --git a/source3/modules/nfs4_acls.c b/source3/modules/nfs4_acls.c
index 52d3983fff..0c3d010dcd 100644
--- a/source3/modules/nfs4_acls.c
+++ b/source3/modules/nfs4_acls.c
@@ -20,6 +20,9 @@
#include "includes.h"
#include "nfs4_acls.h"
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_ACLS
+
#define SMBACL4_PARAM_TYPE_NAME "nfs4"
#define SMB_ACE4_INT_MAGIC 0x76F8A967
@@ -352,6 +355,7 @@ typedef struct _smbacl4_vfs_params {
enum smbacl4_mode_enum mode;
bool do_chown;
enum smbacl4_acedup_enum acedup;
+ struct db_context *sid_mapping_table;
} smbacl4_vfs_params;
/*
@@ -451,8 +455,65 @@ static SMB_ACE4PROP_T *smbacl4_find_equal_special(
return NULL;
}
-static int smbacl4_fill_ace4(
+static bool nfs4_map_sid(smbacl4_vfs_params *params, const DOM_SID *src,
+ DOM_SID *dst)
+{
+ static struct db_context *mapping_db = NULL;
+ TDB_DATA data;
+
+ if (mapping_db == NULL) {
+ const char *dbname = lp_parm_const_string(
+ -1, SMBACL4_PARAM_TYPE_NAME, "sidmap", NULL);
+
+ if (dbname == NULL) {
+ DEBUG(10, ("%s:sidmap not defined\n",
+ SMBACL4_PARAM_TYPE_NAME));
+ return False;
+ }
+
+ become_root();
+ mapping_db = db_open(NULL, dbname, 0, TDB_DEFAULT,
+ O_RDONLY, 0600);
+ unbecome_root();
+
+ if (mapping_db == NULL) {
+ DEBUG(1, ("could not open sidmap: %s\n",
+ strerror(errno)));
+ return False;
+ }
+ }
+
+ if (mapping_db->fetch(mapping_db, NULL,
+ string_term_tdb_data(sid_string_tos(src)),
+ &data) == -1) {
+ DEBUG(10, ("could not find mapping for SID %s\n",
+ sid_string_dbg(src)));
+ return False;
+ }
+
+ if ((data.dptr == NULL) || (data.dsize <= 0)
+ || (data.dptr[data.dsize-1] != '\0')) {
+ DEBUG(5, ("invalid mapping for SID %s\n",
+ sid_string_dbg(src)));
+ TALLOC_FREE(data.dptr);
+ return False;
+ }
+
+ if (!string_to_sid(dst, (char *)data.dptr)) {
+ DEBUG(1, ("invalid mapping %s for SID %s\n",
+ (char *)data.dptr, sid_string_dbg(src)));
+ TALLOC_FREE(data.dptr);
+ return False;
+ }
+
+ TALLOC_FREE(data.dptr);
+
+ return True;
+}
+
+static bool smbacl4_fill_ace4(
TALLOC_CTX *mem_ctx,
+ const char *filename,
smbacl4_vfs_params *params,
uid_t ownerUID,
gid_t ownerGID,
@@ -460,11 +521,6 @@ static int smbacl4_fill_ace4(
SMB_ACE4PROP_T *ace_v4 /* output */
)
{
- const char *dom, *name;
- enum lsa_SidType type;
- uid_t uid;
- gid_t gid;
-
DEBUG(10, ("got ace for %s\n", sid_string_dbg(&ace_nt->trustee)));
memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
@@ -485,18 +541,46 @@ static int smbacl4_fill_ace4(
ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
} else {
- if (!lookup_sid(mem_ctx, &ace_nt->trustee, &dom, &name, &type)) {
- DEBUG(8, ("Could not find %s' type\n",
- sid_string_dbg(&ace_nt->trustee)));
- errno = EINVAL;
- return -1;
+ const char *dom, *name;
+ enum lsa_SidType type;
+ uid_t uid;
+ gid_t gid;
+ DOM_SID sid;
+
+ sid_copy(&sid, &ace_nt->trustee);
+
+ if (!lookup_sid(mem_ctx, &sid, &dom, &name, &type)) {
+
+ DOM_SID mapped;
+
+ if (!nfs4_map_sid(params, &sid, &mapped)) {
+ DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
+ "unknown\n", filename, sid_string_dbg(&sid)));
+ errno = EINVAL;
+ return False;
+ }
+
+ DEBUG(2, ("nfs4_acls.c: file [%s]: mapped SID %s "
+ "to %s\n", filename, sid_string_dbg(&sid), sid_string_dbg(&mapped)));
+
+ if (!lookup_sid(mem_ctx, &mapped, &dom,
+ &name, &type)) {
+ DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
+ "mapped from %s is unknown\n",
+ filename, sid_string_dbg(&mapped), sid_string_dbg(&sid)));
+ errno = EINVAL;
+ return False;
+ }
+
+ sid_copy(&sid, &mapped);
}
-
+
if (type == SID_NAME_USER) {
- if (!sid_to_uid(&ace_nt->trustee, &uid)) {
- DEBUG(2, ("Could not convert %s to uid\n",
- sid_string_dbg(&ace_nt->trustee)));
- return -1;
+ if (!sid_to_uid(&sid, &uid)) {
+ DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
+ "convert %s to uid\n", filename,
+ sid_string_dbg(&sid)));
+ return False;
}
if (params->mode==e_special && uid==ownerUID) {
@@ -506,11 +590,13 @@ static int smbacl4_fill_ace4(
ace_v4->who.uid = uid;
}
} else { /* else group? - TODO check it... */
- if (!sid_to_gid(&ace_nt->trustee, &gid)) {
- DEBUG(2, ("Could not convert %s to gid\n",
- sid_string_dbg(&ace_nt->trustee)));
- return -1;
+ if (!sid_to_gid(&sid, &gid)) {
+ DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
+ "convert %s to gid\n", filename,
+ sid_string_dbg(&sid)));
+ return False;
}
+
ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
if (params->mode==e_special && gid==ownerGID) {
@@ -522,7 +608,7 @@ static int smbacl4_fill_ace4(
}
}
- return 0; /* OK */
+ return True; /* OK */
}
static int smbacl4_MergeIgnoreReject(
@@ -560,6 +646,7 @@ static int smbacl4_MergeIgnoreReject(
}
static SMB4ACL_T *smbacl4_win2nfs4(
+ const char *filename,
SEC_ACL *dacl,
smbacl4_vfs_params *pparams,
uid_t ownerUID,
@@ -580,9 +667,14 @@ static SMB4ACL_T *smbacl4_win2nfs4(
SMB_ACE4PROP_T ace_v4;
bool addNewACE = True;
- if (smbacl4_fill_ace4(mem_ctx, pparams, ownerUID, ownerGID,
- dacl->aces + i, &ace_v4))
- return NULL;
+ if (!smbacl4_fill_ace4(mem_ctx, filename, pparams,
+ ownerUID, ownerGID,
+ dacl->aces + i, &ace_v4)) {
+ DEBUG(3, ("Could not fill ace for file %s, SID %s\n",
+ filename,
+ sid_string_dbg(&((dacl->aces+i)->trustee))));
+ continue;
+ }
if (pparams->acedup!=e_dontcare) {
if (smbacl4_MergeIgnoreReject(pparams->acedup, acl,
@@ -607,6 +699,7 @@ NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
bool result;
SMB_STRUCT_STAT sbuf;
+ bool need_chown = False;
uid_t newUID = (uid_t)-1;
gid_t newGID = (gid_t)-1;
@@ -635,25 +728,33 @@ NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
return status;
}
if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
- ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
- if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
- DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
- fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID, strerror(errno) ));
- if (errno == EPERM) {
- return NT_STATUS_INVALID_OWNER;
+ ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
+ need_chown = True;
+ }
+ if (need_chown) {
+ if ((newUID == (uid_t)-1 || newUID == current_user.ut.uid)) {
+ if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
+ DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
+ strerror(errno)));
+ return map_nt_error_from_unix(errno);
}
- return map_nt_error_from_unix(errno);
+
+ DEBUG(10,("chown %s, %u, %u succeeded.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
+ if (smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, &sbuf))
+ return map_nt_error_from_unix(errno);
+ need_chown = False;
+ } else { /* chown is needed, but _after_ changing acl */
+ sbuf.st_uid = newUID; /* OWNER@ in case of e_special */
+ sbuf.st_gid = newGID; /* GROUP@ in case of e_special */
}
- DEBUG(10,("chown %s, %u, %u succeeded.\n",
- fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
- if (smbacl4_fGetFileOwner(fsp, &sbuf))
- return map_nt_error_from_unix(errno);
}
}
if ((security_info_sent & DACL_SECURITY_INFORMATION)!=0 && psd->dacl!=NULL)
{
- acl = smbacl4_win2nfs4(psd->dacl, &params, sbuf.st_uid, sbuf.st_gid);
+ acl = smbacl4_win2nfs4(fsp->fsp_name, psd->dacl, &params, sbuf.st_uid, sbuf.st_gid);
if (!acl)
return map_nt_error_from_unix(errno);
@@ -668,6 +769,20 @@ NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
} else
DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
+ /* Any chown pending? */
+ if (need_chown) {
+ DEBUG(3,("chown#2 %s. uid = %u, gid = %u.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
+ if (try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
+ DEBUG(2,("chown#2 %s, %u, %u failed. Error = %s.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
+ strerror(errno)));
+ return map_nt_error_from_unix(errno);
+ }
+ DEBUG(10,("chown#2 %s, %u, %u succeeded.\n",
+ fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
+ }
+
DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
return NT_STATUS_OK;
}
generated by cgit (git 2.34.1) at 2024-12-24 00:06:41 +0000