2 Unix SMB/CIFS implementation.
3 Wrap gpfs calls in vfs functions.
5 Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006
7 Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com>
8 and Gomati Mohanan <gomati.mohanan@in.ibm.com>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
29 #define DBGC_CLASS DBGC_VFS
32 #include "nfs4_acls.h"
35 static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp,
36 int fd, uint32 share_mode)
39 START_PROFILE(syscall_kernel_flock);
41 kernel_flock(fsp->fh->fd, share_mode);
43 if (!set_gpfs_sharemode(fsp, fsp->access_mask, fsp->share_access)) {
49 END_PROFILE(syscall_kernel_flock);
54 static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp,
55 int fd, int leasetype)
59 START_PROFILE(syscall_linux_setlease);
61 if ( linux_set_lease_sighandler(fd) == -1)
64 ret = set_gpfs_lease(fd,leasetype);
67 /* This must have come from GPFS not being available */
68 /* or some other error, hence call the default */
69 ret = linux_setlease(fd, leasetype);
72 END_PROFILE(syscall_linux_setlease);
79 static void gpfs_dumpacl(int level, struct gpfs_acl *gacl)
84 DEBUG(0, ("gpfs acl is NULL\n"));
88 DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n",
89 gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len));
90 for(i=0; i<gacl->acl_nace; i++)
92 struct gpfs_ace_v4 *gace = gacl->ace_v4 + i;
93 DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n",
94 i, gace->aceType, gace->aceFlags, gace->aceMask,
95 gace->aceIFlags, gace->aceWho));
99 static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type)
101 struct gpfs_acl *acl;
104 TALLOC_CTX *mem_ctx = talloc_tos();
106 acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len);
114 acl->acl_version = 0;
115 acl->acl_type = type;
117 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
118 if ((ret != 0) && (errno == ENOSPC)) {
119 struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE(
120 mem_ctx, acl->acl_len + sizeof(struct gpfs_acl));
121 if (new_acl == NULL) {
126 new_acl->acl_len = acl->acl_len;
127 new_acl->acl_level = acl->acl_level;
128 new_acl->acl_version = acl->acl_version;
129 new_acl->acl_type = acl->acl_type;
132 ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl);
136 DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno)));
143 /* Tries to get nfs4 acls and returns SMB ACL allocated.
144 * On failure returns 1 if it got non-NFSv4 ACL to prompt
145 * retry with POSIX ACL checks.
146 * On failure returns -1 if there is system (GPFS) error, check errno.
147 * Returns 0 on success
149 static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl)
152 struct gpfs_acl *gacl = NULL;
153 DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname));
155 /* First get the real acl length */
156 gacl = gpfs_getacl_alloc(fname, GPFS_ACL_TYPE_NFS4);
158 DEBUG(9, ("gpfs_getacl failed for %s with %s\n",
159 fname, strerror(errno)));
163 if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) {
164 DEBUG(10, ("Got non-nfsv4 acl\n"));
165 /* Retry with POSIX ACLs check */
169 *ppacl = smb_create_smb4acl();
171 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
172 gacl->acl_len, gacl->acl_level, gacl->acl_version,
175 for (i=0; i<gacl->acl_nace; i++) {
176 struct gpfs_ace_v4 *gace = &gacl->ace_v4[i];
177 SMB_ACE4PROP_T smbace;
178 DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, "
179 "who: %d\n", gace->aceType, gace->aceIFlags,
180 gace->aceFlags, gace->aceMask, gace->aceWho));
182 memset(&smbace, 0, sizeof(SMB4ACE_T));
183 if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) {
184 smbace.flags |= SMB_ACE4_ID_SPECIAL;
185 switch (gace->aceWho) {
186 case ACE4_SPECIAL_OWNER:
187 smbace.who.special_id = SMB_ACE4_WHO_OWNER;
189 case ACE4_SPECIAL_GROUP:
190 smbace.who.special_id = SMB_ACE4_WHO_GROUP;
192 case ACE4_SPECIAL_EVERYONE:
193 smbace.who.special_id = SMB_ACE4_WHO_EVERYONE;
196 DEBUG(8, ("invalid special gpfs id %d "
197 "ignored\n", gace->aceWho));
198 continue; /* don't add it */
201 if (gace->aceFlags & ACE4_FLAG_GROUP_ID)
202 smbace.who.gid = gace->aceWho;
204 smbace.who.uid = gace->aceWho;
207 /* remove redundent deny entries */
208 if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) {
209 struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1];
210 if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE &&
211 prev->aceFlags == gace->aceFlags &&
212 prev->aceIFlags == gace->aceIFlags &&
213 (gace->aceMask & prev->aceMask) == 0 &&
214 gace->aceWho == prev->aceWho) {
215 /* its redundent - skip it */
220 smbace.aceType = gace->aceType;
221 smbace.aceFlags = gace->aceFlags;
222 smbace.aceMask = gace->aceMask;
223 smb_add_ace4(*ppacl, &smbace);
229 static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle,
230 files_struct *fsp, int fd, uint32 security_info,
233 SMB4ACL_T *pacl = NULL;
237 result = gpfs_get_nfs4_acl(fsp->fsp_name, &pacl);
240 return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl);
243 DEBUG(10, ("retrying with posix acl...\n"));
244 return posix_fget_nt_acl(fsp, security_info, ppdesc);
247 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
248 return map_nt_error_from_unix(errno);
251 static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle,
253 uint32 security_info, SEC_DESC **ppdesc)
255 SMB4ACL_T *pacl = NULL;
259 result = gpfs_get_nfs4_acl(fsp->fsp_name, &pacl);
262 return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl);
265 DEBUG(10, ("retrying with posix acl...\n"));
266 return posix_get_nt_acl(handle->conn, name, security_info, ppdesc);
269 /* GPFS ACL was not read, something wrong happened, error code is set in errno */
270 return map_nt_error_from_unix(errno);
273 static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl)
276 gpfs_aclLen_t gacl_len;
278 struct gpfs_acl *gacl;
279 TALLOC_CTX *mem_ctx = talloc_tos();
281 gacl_len = sizeof(struct gpfs_acl) +
282 (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t);
284 gacl = TALLOC_SIZE(mem_ctx, gacl_len);
286 DEBUG(0, ("talloc failed\n"));
291 gacl->acl_len = gacl_len;
293 gacl->acl_version = GPFS_ACL_VERSION_NFS4;
294 gacl->acl_type = GPFS_ACL_TYPE_NFS4;
295 gacl->acl_nace = 0; /* change later... */
297 for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) {
298 struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace];
299 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
301 gace->aceType = aceprop->aceType;
302 gace->aceFlags = aceprop->aceFlags;
303 gace->aceMask = aceprop->aceMask;
304 gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0;
306 if (aceprop->flags&SMB_ACE4_ID_SPECIAL)
308 switch(aceprop->who.special_id)
310 case SMB_ACE4_WHO_EVERYONE:
311 gace->aceWho = ACE4_SPECIAL_EVERYONE;
313 case SMB_ACE4_WHO_OWNER:
314 gace->aceWho = ACE4_SPECIAL_OWNER;
316 case SMB_ACE4_WHO_GROUP:
317 gace->aceWho = ACE4_SPECIAL_GROUP;
320 DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id));
321 continue; /* don't add it !!! */
324 /* just only for the type safety... */
325 if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
326 gace->aceWho = aceprop->who.gid;
328 gace->aceWho = aceprop->who.uid;
334 ret = smbd_gpfs_putacl(fsp->fsp_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl);
336 DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno)));
337 gpfs_dumpacl(8, gacl);
341 DEBUG(10, ("gpfs_putacl succeeded\n"));
345 static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
347 struct gpfs_acl *acl;
348 NTSTATUS result = NT_STATUS_ACCESS_DENIED;
350 acl = gpfs_getacl_alloc(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
354 if (acl->acl_version&GPFS_ACL_VERSION_NFS4)
356 result = smb_set_nt_acl_nfs4(
357 fsp, security_info_sent, psd,
358 gpfsacl_process_smbacl);
359 } else { /* assume POSIX ACL - by default... */
360 result = set_nt_acl(fsp, security_info_sent, psd);
366 static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, uint32 security_info_sent, SEC_DESC *psd)
368 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
371 static NTSTATUS gpfsacl_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp, char *name, uint32 security_info_sent, SEC_DESC *psd)
373 return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd);
376 static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl)
381 result = sys_acl_init(pacl->acl_nace);
382 if (result == NULL) {
387 result->count = pacl->acl_nace;
389 for (i=0; i<pacl->acl_nace; i++) {
390 struct smb_acl_entry *ace = &result->acl[i];
391 const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i];
393 DEBUG(10, ("Converting type %d id %lu perm %x\n",
394 (int)g_ace->ace_type, (unsigned long)g_ace->ace_who,
395 (int)g_ace->ace_perm));
397 switch (g_ace->ace_type) {
399 ace->a_type = SMB_ACL_USER;
400 ace->uid = (uid_t)g_ace->ace_who;
402 case GPFS_ACL_USER_OBJ:
403 ace->a_type = SMB_ACL_USER_OBJ;
406 ace->a_type = SMB_ACL_GROUP;
407 ace->gid = (gid_t)g_ace->ace_who;
409 case GPFS_ACL_GROUP_OBJ:
410 ace->a_type = SMB_ACL_GROUP_OBJ;
413 ace->a_type = SMB_ACL_OTHER;
416 ace->a_type = SMB_ACL_MASK;
419 DEBUG(10, ("Got invalid ace_type: %d\n",
427 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ?
429 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ?
431 ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ?
434 DEBUGADD(10, ("Converted to %d perm %x\n",
435 ace->a_type, ace->a_perm));
441 static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type)
443 struct gpfs_acl *pacl;
444 SMB_ACL_T result = NULL;
446 pacl = gpfs_getacl_alloc(path, type);
449 DEBUG(10, ("gpfs_getacl failed for %s with %s\n",
450 path, strerror(errno)));
457 if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) {
458 DEBUG(10, ("Got acl version %d, expected %d\n",
459 pacl->acl_version, GPFS_ACL_VERSION_POSIX));
464 DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n",
465 pacl->acl_len, pacl->acl_level, pacl->acl_version,
468 result = gpfs2smb_acl(pacl);
469 if (result == NULL) {
481 SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle,
486 gpfs_aclType_t gpfs_type;
489 case SMB_ACL_TYPE_ACCESS:
490 gpfs_type = GPFS_ACL_TYPE_ACCESS;
492 case SMB_ACL_TYPE_DEFAULT:
493 gpfs_type = GPFS_ACL_TYPE_DEFAULT;
496 DEBUG(0, ("Got invalid type: %d\n", type));
497 smb_panic("exiting");
500 return gpfsacl_get_posix_acl(path_p, gpfs_type);
503 SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle,
507 return gpfsacl_get_posix_acl(fsp->fsp_name, GPFS_ACL_TYPE_ACCESS);
510 static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl,
514 struct gpfs_acl *result;
518 gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */
519 gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */
522 DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count));
524 len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) +
525 (pacl->count)*sizeof(gpfs_ace_v1_t);
527 result = SMB_MALLOC(len);
528 if (result == NULL) {
533 result->acl_len = len;
534 result->acl_level = 0;
535 result->acl_version = GPFS_ACL_VERSION_POSIX;
536 result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ?
537 GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS;
538 result->acl_nace = pacl->count;
540 for (i=0; i<pacl->count; i++) {
541 const struct smb_acl_entry *ace = &pacl->acl[i];
542 struct gpfs_ace_v1 *g_ace = &result->ace_v1[i];
544 DEBUG(10, ("Converting type %d perm %x\n",
545 (int)ace->a_type, (int)ace->a_perm));
549 switch(ace->a_type) {
551 g_ace->ace_type = GPFS_ACL_USER;
552 g_ace->ace_who = (gpfs_uid_t)ace->uid;
554 case SMB_ACL_USER_OBJ:
555 g_ace->ace_type = GPFS_ACL_USER_OBJ;
556 g_ace->ace_perm |= ACL_PERM_CONTROL;
560 g_ace->ace_type = GPFS_ACL_GROUP;
561 g_ace->ace_who = (gpfs_uid_t)ace->gid;
563 case SMB_ACL_GROUP_OBJ:
564 g_ace->ace_type = GPFS_ACL_GROUP_OBJ;
568 g_ace->ace_type = GPFS_ACL_MASK;
569 g_ace->ace_perm = 0x8f;
573 g_ace->ace_type = GPFS_ACL_OTHER;
577 DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type));
583 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ?
585 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ?
587 g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ?
588 ACL_PERM_EXECUTE : 0;
590 DEBUGADD(10, ("Converted to %d id %d perm %x\n",
591 g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm));
597 int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle,
603 struct gpfs_acl *gpfs_acl;
606 gpfs_acl = smb2gpfs_acl(theacl, type);
607 if (gpfs_acl == NULL) {
611 result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl);
617 int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle,
619 int fd, SMB_ACL_T theacl)
621 return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name, SMB_ACL_TYPE_ACCESS, theacl);
624 int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
632 static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
635 if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) {
638 /* avoid chmod() if possible, to preserve acls */
639 if ((st.st_mode & ~S_IFMT) == mode) {
642 return SMB_VFS_NEXT_CHMOD(handle, path, mode);
645 static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
648 if (SMB_VFS_NEXT_FSTAT(handle, fsp, fd, &st) != 0) {
651 /* avoid chmod() if possible, to preserve acls */
652 if ((st.st_mode & ~S_IFMT) == mode) {
655 return SMB_VFS_NEXT_FCHMOD(handle, fsp, fd, mode);
658 /* VFS operations structure */
660 static vfs_op_tuple gpfs_op_tuples[] = {
662 { SMB_VFS_OP(vfs_gpfs_kernel_flock), SMB_VFS_OP_KERNEL_FLOCK,
663 SMB_VFS_LAYER_OPAQUE },
665 { SMB_VFS_OP(vfs_gpfs_setlease), SMB_VFS_OP_LINUX_SETLEASE,
666 SMB_VFS_LAYER_OPAQUE },
668 { SMB_VFS_OP(gpfsacl_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL,
669 SMB_VFS_LAYER_TRANSPARENT },
671 { SMB_VFS_OP(gpfsacl_get_nt_acl), SMB_VFS_OP_GET_NT_ACL,
672 SMB_VFS_LAYER_TRANSPARENT },
674 { SMB_VFS_OP(gpfsacl_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL,
675 SMB_VFS_LAYER_TRANSPARENT },
677 { SMB_VFS_OP(gpfsacl_set_nt_acl), SMB_VFS_OP_SET_NT_ACL,
678 SMB_VFS_LAYER_TRANSPARENT },
680 { SMB_VFS_OP(gpfsacl_sys_acl_get_file), SMB_VFS_OP_SYS_ACL_GET_FILE,
681 SMB_VFS_LAYER_TRANSPARENT },
683 { SMB_VFS_OP(gpfsacl_sys_acl_get_fd), SMB_VFS_OP_SYS_ACL_GET_FD,
684 SMB_VFS_LAYER_TRANSPARENT },
686 { SMB_VFS_OP(gpfsacl_sys_acl_set_file), SMB_VFS_OP_SYS_ACL_SET_FILE,
687 SMB_VFS_LAYER_TRANSPARENT },
689 { SMB_VFS_OP(gpfsacl_sys_acl_set_fd), SMB_VFS_OP_SYS_ACL_SET_FD,
690 SMB_VFS_LAYER_TRANSPARENT },
692 { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file),
693 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
694 SMB_VFS_LAYER_TRANSPARENT },
696 { SMB_VFS_OP(vfs_gpfs_chmod), SMB_VFS_OP_CHMOD,
697 SMB_VFS_LAYER_TRANSPARENT },
699 { SMB_VFS_OP(vfs_gpfs_fchmod), SMB_VFS_OP_FCHMOD,
700 SMB_VFS_LAYER_TRANSPARENT },
702 { SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP }
707 NTSTATUS vfs_gpfs_init(void);
708 NTSTATUS vfs_gpfs_init(void)
712 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs",