/* Unix SMB/CIFS implementation. Wrap gpfs calls in vfs functions. Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006 Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com> and Gomati Mohanan <gomati.mohanan@in.ibm.com> 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" #undef DBGC_CLASS #define DBGC_CLASS DBGC_VFS #include <gpfs_gpl.h> #include "nfs4_acls.h" #include "vfs_gpfs.h" static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp, uint32 share_mode, uint32 access_mask) { START_PROFILE(syscall_kernel_flock); kernel_flock(fsp->fh->fd, share_mode, access_mask); if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) { return -1; } END_PROFILE(syscall_kernel_flock); return 0; } static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp) { if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) { set_gpfs_sharemode(fsp, 0, 0); } return SMB_VFS_NEXT_CLOSE(handle, fsp); } static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp, int leasetype) { int ret; START_PROFILE(syscall_linux_setlease); if ( linux_set_lease_sighandler(fsp->fh->fd) == -1) return -1; ret = set_gpfs_lease(fsp->fh->fd,leasetype); if ( ret < 0 ) { /* This must have come from GPFS not being available */ /* or some other error, hence call the default */ ret = linux_setlease(fsp->fh->fd, leasetype); } END_PROFILE(syscall_linux_setlease); return ret; } static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle, const char *path, const char *name, TALLOC_CTX *mem_ctx, char **found_name) { int result; char *full_path; char real_pathname[PATH_MAX+1]; int buflen; full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name); if (full_path == NULL) { errno = ENOMEM; return -1; } buflen = sizeof(real_pathname) - 1; result = smbd_gpfs_get_realfilename_path(full_path, real_pathname, &buflen); TALLOC_FREE(full_path); if ((result == -1) && (errno == ENOSYS)) { return SMB_VFS_NEXT_GET_REAL_FILENAME( handle, path, name, mem_ctx, found_name); } if (result == -1) { DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n", strerror(errno))); return -1; } /* * GPFS does not necessarily null-terminate the returned path * but instead returns the buffer length in buflen. */ if (buflen < sizeof(real_pathname)) { real_pathname[buflen] = '\0'; } else { real_pathname[sizeof(real_pathname)-1] = '\0'; } DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n", path, name, real_pathname)); name = strrchr_m(real_pathname, '/'); if (name == NULL) { errno = ENOENT; return -1; } *found_name = talloc_strdup(mem_ctx, name+1); if (*found_name == NULL) { errno = ENOMEM; return -1; } return 0; } static void gpfs_dumpacl(int level, struct gpfs_acl *gacl) { int i; if (gacl==NULL) { DEBUG(0, ("gpfs acl is NULL\n")); return; } DEBUG(level, ("gpfs acl: nace: %d, type:%d, version:%d, level:%d, len:%d\n", gacl->acl_nace, gacl->acl_type, gacl->acl_version, gacl->acl_level, gacl->acl_len)); for(i=0; i<gacl->acl_nace; i++) { struct gpfs_ace_v4 *gace = gacl->ace_v4 + i; DEBUG(level, ("\tace[%d]: type:%d, flags:0x%x, mask:0x%x, iflags:0x%x, who:%u\n", i, gace->aceType, gace->aceFlags, gace->aceMask, gace->aceIFlags, gace->aceWho)); } } static struct gpfs_acl *gpfs_getacl_alloc(const char *fname, gpfs_aclType_t type) { struct gpfs_acl *acl; size_t len = 200; int ret; TALLOC_CTX *mem_ctx = talloc_tos(); acl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, len); if (acl == NULL) { errno = ENOMEM; return NULL; } acl->acl_len = len; acl->acl_level = 0; acl->acl_version = 0; acl->acl_type = type; ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl); if ((ret != 0) && (errno == ENOSPC)) { struct gpfs_acl *new_acl = (struct gpfs_acl *)TALLOC_SIZE( mem_ctx, acl->acl_len + sizeof(struct gpfs_acl)); if (new_acl == NULL) { errno = ENOMEM; return NULL; } new_acl->acl_len = acl->acl_len; new_acl->acl_level = acl->acl_level; new_acl->acl_version = acl->acl_version; new_acl->acl_type = acl->acl_type; acl = new_acl; ret = smbd_gpfs_getacl((char *)fname, GPFS_GETACL_STRUCT | GPFS_ACL_SAMBA, acl); } if (ret != 0) { DEBUG(8, ("smbd_gpfs_getacl failed with %s\n",strerror(errno))); return NULL; } return acl; } /* Tries to get nfs4 acls and returns SMB ACL allocated. * On failure returns 1 if it got non-NFSv4 ACL to prompt * retry with POSIX ACL checks. * On failure returns -1 if there is system (GPFS) error, check errno. * Returns 0 on success */ static int gpfs_get_nfs4_acl(const char *fname, SMB4ACL_T **ppacl) { int i; struct gpfs_acl *gacl = NULL; DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname)); /* First get the real acl length */ gacl = gpfs_getacl_alloc(fname, 0); if (gacl == NULL) { DEBUG(9, ("gpfs_getacl failed for %s with %s\n", fname, strerror(errno))); return -1; } if (gacl->acl_type != GPFS_ACL_TYPE_NFS4) { DEBUG(10, ("Got non-nfsv4 acl\n")); /* Retry with POSIX ACLs check */ return 1; } *ppacl = smb_create_smb4acl(); DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n", gacl->acl_len, gacl->acl_level, gacl->acl_version, gacl->acl_nace)); for (i=0; i<gacl->acl_nace; i++) { struct gpfs_ace_v4 *gace = &gacl->ace_v4[i]; SMB_ACE4PROP_T smbace; DEBUG(10, ("type: %d, iflags: %x, flags: %x, mask: %x, " "who: %d\n", gace->aceType, gace->aceIFlags, gace->aceFlags, gace->aceMask, gace->aceWho)); ZERO_STRUCT(smbace); if (gace->aceIFlags & ACE4_IFLAG_SPECIAL_ID) { smbace.flags |= SMB_ACE4_ID_SPECIAL; switch (gace->aceWho) { case ACE4_SPECIAL_OWNER: smbace.who.special_id = SMB_ACE4_WHO_OWNER; break; case ACE4_SPECIAL_GROUP: smbace.who.special_id = SMB_ACE4_WHO_GROUP; break; case ACE4_SPECIAL_EVERYONE: smbace.who.special_id = SMB_ACE4_WHO_EVERYONE; break; default: DEBUG(8, ("invalid special gpfs id %d " "ignored\n", gace->aceWho)); continue; /* don't add it */ } } else { if (gace->aceFlags & ACE4_FLAG_GROUP_ID) smbace.who.gid = gace->aceWho; else smbace.who.uid = gace->aceWho; } /* remove redundent deny entries */ if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) { struct gpfs_ace_v4 *prev = &gacl->ace_v4[i-1]; if (prev->aceType == SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE && prev->aceFlags == gace->aceFlags && prev->aceIFlags == gace->aceIFlags && (gace->aceMask & prev->aceMask) == 0 && gace->aceWho == prev->aceWho) { /* its redundent - skip it */ continue; } } smbace.aceType = gace->aceType; smbace.aceFlags = gace->aceFlags; smbace.aceMask = gace->aceMask; smb_add_ace4(*ppacl, &smbace); } return 0; } static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info, SEC_DESC **ppdesc) { SMB4ACL_T *pacl = NULL; int result; *ppdesc = NULL; result = gpfs_get_nfs4_acl(fsp->fsp_name->base_name, &pacl); if (result == 0) return smb_fget_nt_acl_nfs4(fsp, security_info, ppdesc, pacl); if (result > 0) { DEBUG(10, ("retrying with posix acl...\n")); return posix_fget_nt_acl(fsp, security_info, ppdesc); } /* GPFS ACL was not read, something wrong happened, error code is set in errno */ return map_nt_error_from_unix(errno); } static NTSTATUS gpfsacl_get_nt_acl(vfs_handle_struct *handle, const char *name, uint32 security_info, SEC_DESC **ppdesc) { SMB4ACL_T *pacl = NULL; int result; *ppdesc = NULL; result = gpfs_get_nfs4_acl(name, &pacl); if (result == 0) return smb_get_nt_acl_nfs4(handle->conn, name, security_info, ppdesc, pacl); if (result > 0) { DEBUG(10, ("retrying with posix acl...\n")); return posix_get_nt_acl(handle->conn, name, security_info, ppdesc); } /* GPFS ACL was not read, something wrong happened, error code is set in errno */ return map_nt_error_from_unix(errno); } static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl) { int ret; gpfs_aclLen_t gacl_len; SMB4ACE_T *smbace; struct gpfs_acl *gacl; TALLOC_CTX *mem_ctx = talloc_tos(); gacl_len = sizeof(struct gpfs_acl) + (smb_get_naces(smbacl)-1)*sizeof(gpfs_ace_v4_t); gacl = (struct gpfs_acl *)TALLOC_SIZE(mem_ctx, gacl_len); if (gacl == NULL) { DEBUG(0, ("talloc failed\n")); errno = ENOMEM; return False; } gacl->acl_len = gacl_len; gacl->acl_level = 0; gacl->acl_version = GPFS_ACL_VERSION_NFS4; gacl->acl_type = GPFS_ACL_TYPE_NFS4; gacl->acl_nace = 0; /* change later... */ for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) { struct gpfs_ace_v4 *gace = &gacl->ace_v4[gacl->acl_nace]; SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace); gace->aceType = aceprop->aceType; gace->aceFlags = aceprop->aceFlags; gace->aceMask = aceprop->aceMask; /* * GPFS can't distinguish between WRITE and APPEND on * files, so one being set without the other is an * error. Sorry for the many ()'s :-) */ if (!fsp->is_directory && ((((gace->aceMask & ACE4_MASK_WRITE) == 0) && ((gace->aceMask & ACE4_MASK_APPEND) != 0)) || (((gace->aceMask & ACE4_MASK_WRITE) != 0) && ((gace->aceMask & ACE4_MASK_APPEND) == 0))) && lp_parm_bool(fsp->conn->params->service, "gpfs", "merge_writeappend", True)) { DEBUG(2, ("vfs_gpfs.c: file [%s]: ACE contains " "WRITE^APPEND, setting WRITE|APPEND\n", fsp_str_dbg(fsp))); gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND; } gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0; if (aceprop->flags&SMB_ACE4_ID_SPECIAL) { switch(aceprop->who.special_id) { case SMB_ACE4_WHO_EVERYONE: gace->aceWho = ACE4_SPECIAL_EVERYONE; break; case SMB_ACE4_WHO_OWNER: gace->aceWho = ACE4_SPECIAL_OWNER; break; case SMB_ACE4_WHO_GROUP: gace->aceWho = ACE4_SPECIAL_GROUP; break; default: DEBUG(8, ("unsupported special_id %d\n", aceprop->who.special_id)); continue; /* don't add it !!! */ } } else { /* just only for the type safety... */ if (aceprop->aceFlags&SMB_ACE4_IDENTIFIER_GROUP) gace->aceWho = aceprop->who.gid; else gace->aceWho = aceprop->who.uid; } gacl->acl_nace++; } ret = smbd_gpfs_putacl(fsp->fsp_name->base_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl); if (ret != 0) { DEBUG(8, ("gpfs_putacl failed with %s\n", strerror(errno))); gpfs_dumpacl(8, gacl); return False; } DEBUG(10, ("gpfs_putacl succeeded\n")); return True; } static NTSTATUS gpfsacl_set_nt_acl_internal(files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd) { struct gpfs_acl *acl; NTSTATUS result = NT_STATUS_ACCESS_DENIED; acl = gpfs_getacl_alloc(fsp->fsp_name->base_name, 0); if (acl == NULL) return result; if (acl->acl_version&GPFS_ACL_VERSION_NFS4) { if (lp_parm_bool(fsp->conn->params->service, "gpfs", "refuse_dacl_protected", false) && (psd->type&SEC_DESC_DACL_PROTECTED)) { DEBUG(2, ("Rejecting unsupported ACL with DACL_PROTECTED bit set\n")); return NT_STATUS_NOT_SUPPORTED; } result = smb_set_nt_acl_nfs4( fsp, security_info_sent, psd, gpfsacl_process_smbacl); } else { /* assume POSIX ACL - by default... */ result = set_nt_acl(fsp, security_info_sent, psd); } return result; } static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const SEC_DESC *psd) { return gpfsacl_set_nt_acl_internal(fsp, security_info_sent, psd); } static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl) { SMB_ACL_T result; int i; result = sys_acl_init(pacl->acl_nace); if (result == NULL) { errno = ENOMEM; return NULL; } result->count = pacl->acl_nace; for (i=0; i<pacl->acl_nace; i++) { struct smb_acl_entry *ace = &result->acl[i]; const struct gpfs_ace_v1 *g_ace = &pacl->ace_v1[i]; DEBUG(10, ("Converting type %d id %lu perm %x\n", (int)g_ace->ace_type, (unsigned long)g_ace->ace_who, (int)g_ace->ace_perm)); switch (g_ace->ace_type) { case GPFS_ACL_USER: ace->a_type = SMB_ACL_USER; ace->uid = (uid_t)g_ace->ace_who; break; case GPFS_ACL_USER_OBJ: ace->a_type = SMB_ACL_USER_OBJ; break; case GPFS_ACL_GROUP: ace->a_type = SMB_ACL_GROUP; ace->gid = (gid_t)g_ace->ace_who; break; case GPFS_ACL_GROUP_OBJ: ace->a_type = SMB_ACL_GROUP_OBJ; break; case GPFS_ACL_OTHER: ace->a_type = SMB_ACL_OTHER; break; case GPFS_ACL_MASK: ace->a_type = SMB_ACL_MASK; break; default: DEBUG(10, ("Got invalid ace_type: %d\n", g_ace->ace_type)); errno = EINVAL; SAFE_FREE(result); return NULL; } ace->a_perm = 0; ace->a_perm |= (g_ace->ace_perm & ACL_PERM_READ) ? SMB_ACL_READ : 0; ace->a_perm |= (g_ace->ace_perm & ACL_PERM_WRITE) ? SMB_ACL_WRITE : 0; ace->a_perm |= (g_ace->ace_perm & ACL_PERM_EXECUTE) ? SMB_ACL_EXECUTE : 0; DEBUGADD(10, ("Converted to %d perm %x\n", ace->a_type, ace->a_perm)); } return result; } static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type) { struct gpfs_acl *pacl; SMB_ACL_T result = NULL; pacl = gpfs_getacl_alloc(path, type); if (pacl == NULL) { DEBUG(10, ("gpfs_getacl failed for %s with %s\n", path, strerror(errno))); if (errno == 0) { errno = EINVAL; } goto done; } if (pacl->acl_version != GPFS_ACL_VERSION_POSIX) { DEBUG(10, ("Got acl version %d, expected %d\n", pacl->acl_version, GPFS_ACL_VERSION_POSIX)); errno = EINVAL; goto done; } DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n", pacl->acl_len, pacl->acl_level, pacl->acl_version, pacl->acl_nace)); result = gpfs2smb_acl(pacl); if (result == NULL) { goto done; } done: if (errno != 0) { SAFE_FREE(result); } return result; } static SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle, const char *path_p, SMB_ACL_TYPE_T type) { gpfs_aclType_t gpfs_type; switch(type) { case SMB_ACL_TYPE_ACCESS: gpfs_type = GPFS_ACL_TYPE_ACCESS; break; case SMB_ACL_TYPE_DEFAULT: gpfs_type = GPFS_ACL_TYPE_DEFAULT; break; default: DEBUG(0, ("Got invalid type: %d\n", type)); smb_panic("exiting"); } return gpfsacl_get_posix_acl(path_p, gpfs_type); } static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp) { return gpfsacl_get_posix_acl(fsp->fsp_name->base_name, GPFS_ACL_TYPE_ACCESS); } static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl, SMB_ACL_TYPE_T type) { gpfs_aclLen_t len; struct gpfs_acl *result; int i; union gpfs_ace_union { gpfs_ace_v1_t ace_v1[1]; /* when GPFS_ACL_VERSION_POSIX */ gpfs_ace_v4_t ace_v4[1]; /* when GPFS_ACL_VERSION_NFS4 */ }; DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count)); len = sizeof(struct gpfs_acl) - sizeof(union gpfs_ace_union) + (pacl->count)*sizeof(gpfs_ace_v1_t); result = (struct gpfs_acl *)SMB_MALLOC(len); if (result == NULL) { errno = ENOMEM; return result; } result->acl_len = len; result->acl_level = 0; result->acl_version = GPFS_ACL_VERSION_POSIX; result->acl_type = (type == SMB_ACL_TYPE_DEFAULT) ? GPFS_ACL_TYPE_DEFAULT : GPFS_ACL_TYPE_ACCESS; result->acl_nace = pacl->count; for (i=0; i<pacl->count; i++) { const struct smb_acl_entry *ace = &pacl->acl[i]; struct gpfs_ace_v1 *g_ace = &result->ace_v1[i]; DEBUG(10, ("Converting type %d perm %x\n", (int)ace->a_type, (int)ace->a_perm)); g_ace->ace_perm = 0; switch(ace->a_type) { case SMB_ACL_USER: g_ace->ace_type = GPFS_ACL_USER; g_ace->ace_who = (gpfs_uid_t)ace->uid; break; case SMB_ACL_USER_OBJ: g_ace->ace_type = GPFS_ACL_USER_OBJ; g_ace->ace_perm |= ACL_PERM_CONTROL; g_ace->ace_who = 0; break; case SMB_ACL_GROUP: g_ace->ace_type = GPFS_ACL_GROUP; g_ace->ace_who = (gpfs_uid_t)ace->gid; break; case SMB_ACL_GROUP_OBJ: g_ace->ace_type = GPFS_ACL_GROUP_OBJ; g_ace->ace_who = 0; break; case SMB_ACL_MASK: g_ace->ace_type = GPFS_ACL_MASK; g_ace->ace_perm = 0x8f; g_ace->ace_who = 0; break; case SMB_ACL_OTHER: g_ace->ace_type = GPFS_ACL_OTHER; g_ace->ace_who = 0; break; default: DEBUG(10, ("Got invalid ace_type: %d\n", ace->a_type)); errno = EINVAL; SAFE_FREE(result); return NULL; } g_ace->ace_perm |= (ace->a_perm & SMB_ACL_READ) ? ACL_PERM_READ : 0; g_ace->ace_perm |= (ace->a_perm & SMB_ACL_WRITE) ? ACL_PERM_WRITE : 0; g_ace->ace_perm |= (ace->a_perm & SMB_ACL_EXECUTE) ? ACL_PERM_EXECUTE : 0; DEBUGADD(10, ("Converted to %d id %d perm %x\n", g_ace->ace_type, g_ace->ace_who, g_ace->ace_perm)); } return result; } static int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle, const char *name, SMB_ACL_TYPE_T type, SMB_ACL_T theacl) { struct gpfs_acl *gpfs_acl; int result; gpfs_acl = smb2gpfs_acl(theacl, type); if (gpfs_acl == NULL) { return -1; } result = smbd_gpfs_putacl((char *)name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gpfs_acl); SAFE_FREE(gpfs_acl); return result; } static int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle, files_struct *fsp, SMB_ACL_T theacl) { return gpfsacl_sys_acl_set_file(handle, fsp->fsp_name->base_name, SMB_ACL_TYPE_ACCESS, theacl); } static int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle, const char *path) { errno = ENOTSUP; return -1; } /* * Assumed: mode bits are shiftable and standard * Output: the new aceMask field for an smb nfs4 ace */ static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx) { const uint32 posix_nfs4map[3] = { SMB_ACE4_EXECUTE, /* execute */ SMB_ACE4_WRITE_DATA | SMB_ACE4_APPEND_DATA, /* write; GPFS specific */ SMB_ACE4_READ_DATA /* read */ }; int i; uint32_t posix_mask = 0x01; uint32_t posix_bit; uint32_t nfs4_bits; for(i=0; i<3; i++) { nfs4_bits = posix_nfs4map[i]; posix_bit = rwx & posix_mask; if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) { if (posix_bit) aceMask |= nfs4_bits; else aceMask &= ~nfs4_bits; } else { /* add deny bits when suitable */ if (!posix_bit) aceMask |= nfs4_bits; else aceMask &= ~nfs4_bits; } /* other ace types are unexpected */ posix_mask <<= 1; } return aceMask; } static int gpfsacl_emu_chmod(const char *path, mode_t mode) { SMB4ACL_T *pacl = NULL; int result; bool haveAllowEntry[SMB_ACE4_WHO_EVERYONE + 1] = {False, False, False, False}; int i; files_struct fake_fsp; /* TODO: rationalize parametrization */ SMB4ACE_T *smbace; NTSTATUS status; DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode)); result = gpfs_get_nfs4_acl(path, &pacl); if (result) return result; if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) { DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path)); } for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) { SMB_ACE4PROP_T *ace = smb_get_ace4(smbace); uint32_t specid = ace->who.special_id; if (ace->flags&SMB_ACE4_ID_SPECIAL && ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE && specid <= SMB_ACE4_WHO_EVERYONE) { uint32_t newMask; if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) haveAllowEntry[specid] = True; /* mode >> 6 for @owner, mode >> 3 for @group, * mode >> 0 for @everyone */ newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask, mode >> ((SMB_ACE4_WHO_EVERYONE - specid) * 3)); if (ace->aceMask!=newMask) { DEBUG(10, ("ace changed for %s (%o -> %o) id=%d\n", path, ace->aceMask, newMask, specid)); } ace->aceMask = newMask; } } /* make sure we have at least ALLOW entries * for all the 3 special ids (@EVERYONE, @OWNER, @GROUP) * - if necessary */ for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) { SMB_ACE4PROP_T ace; if (haveAllowEntry[i]==True) continue; ZERO_STRUCT(ace); ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE; ace.flags |= SMB_ACE4_ID_SPECIAL; ace.who.special_id = i; if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */ ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP; ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask, mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3)); /* don't add unnecessary aces */ if (!ace.aceMask) continue; /* we add it to the END - as windows expects allow aces */ smb_add_ace4(pacl, &ace); DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n", path, mode, i, ace.aceMask)); } /* don't add complementary DENY ACEs here */ ZERO_STRUCT(fake_fsp); status = create_synthetic_smb_fname(talloc_tos(), path, NULL, NULL, &fake_fsp.fsp_name); if (!NT_STATUS_IS_OK(status)) { errno = map_errno_from_nt_status(status); return -1; } /* put the acl */ if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False) { TALLOC_FREE(fake_fsp.fsp_name); return -1; } TALLOC_FREE(fake_fsp.fsp_name); return 0; /* ok for [f]chmod */ } static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mode) { struct smb_filename *smb_fname_cpath; int rc; NTSTATUS status; status = create_synthetic_smb_fname( talloc_tos(), path, NULL, NULL, &smb_fname_cpath); if (SMB_VFS_NEXT_STAT(handle, smb_fname_cpath) != 0) { return -1; } /* avoid chmod() if possible, to preserve acls */ if ((smb_fname_cpath->st.st_ex_mode & ~S_IFMT) == mode) { return 0; } rc = gpfsacl_emu_chmod(path, mode); if (rc == 1) return SMB_VFS_NEXT_CHMOD(handle, path, mode); return rc; } static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode) { SMB_STRUCT_STAT st; int rc; if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) { return -1; } /* avoid chmod() if possible, to preserve acls */ if ((st.st_ex_mode & ~S_IFMT) == mode) { return 0; } rc = gpfsacl_emu_chmod(fsp->fsp_name->base_name, mode); if (rc == 1) return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode); return rc; } static int gpfs_set_xattr(struct vfs_handle_struct *handle, const char *path, const char *name, const void *value, size_t size, int flags){ const char *attrstr = value; unsigned int dosmode=0; struct gpfs_winattr attrs; int ret = 0; DEBUG(10, ("gpfs_set_xattr: %s \n",path)); /* Only handle DOS Attributes */ if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){ DEBUG(1, ("gpfs_set_xattr:name is %s\n",name)); return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags); } if (size < 2 || attrstr[0] != '0' || attrstr[1] != 'x' || sscanf(attrstr, "%x", &dosmode) != 1) { DEBUG(1,("gpfs_set_xattr: Trying to set badly formed DOSATTRIB on file %s - %s\n", path, attrstr)); return False; } attrs.winAttrs = 0; /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/ if (dosmode & FILE_ATTRIBUTE_ARCHIVE){ attrs.winAttrs |= GPFS_WINATTR_ARCHIVE; } if (dosmode & FILE_ATTRIBUTE_HIDDEN){ attrs.winAttrs |= GPFS_WINATTR_HIDDEN; } if (dosmode & FILE_ATTRIBUTE_SYSTEM){ attrs.winAttrs |= GPFS_WINATTR_SYSTEM; } if (dosmode & FILE_ATTRIBUTE_READONLY){ attrs.winAttrs |= GPFS_WINATTR_READONLY; } ret = set_gpfs_winattrs(CONST_DISCARD(char *, path), GPFS_WINATTR_SET_ATTRS, &attrs); if ( ret == -1){ DEBUG(1, ("gpfs_set_xattr:Set GPFS attributes failed %d\n",ret)); return -1; } DEBUG(10, ("gpfs_set_xattr:Set attributes: 0x%x\n",attrs.winAttrs)); return 0; } static ssize_t gpfs_get_xattr(struct vfs_handle_struct *handle, const char *path, const char *name, void *value, size_t size){ char *attrstr = value; unsigned int dosmode = 0; struct gpfs_winattr attrs; int ret = 0; DEBUG(10, ("gpfs_get_xattr: %s \n",path)); /* Only handle DOS Attributes */ if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){ DEBUG(1, ("gpfs_get_xattr:name is %s\n",name)); return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size); } ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs); if ( ret == -1){ DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: %d\n",ret)); return -1; } DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs)); /*Just map RD_ONLY, ARCHIVE, SYSTEM and HIDDEN. Ignore the others*/ if (attrs.winAttrs & GPFS_WINATTR_ARCHIVE){ dosmode |= FILE_ATTRIBUTE_ARCHIVE; } if (attrs.winAttrs & GPFS_WINATTR_HIDDEN){ dosmode |= FILE_ATTRIBUTE_HIDDEN; } if (attrs.winAttrs & GPFS_WINATTR_SYSTEM){ dosmode |= FILE_ATTRIBUTE_SYSTEM; } if (attrs.winAttrs & GPFS_WINATTR_READONLY){ dosmode |= FILE_ATTRIBUTE_READONLY; } snprintf(attrstr, size, "0x%x", dosmode & SAMBA_ATTRIBUTES_MASK); DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr)); return size; } static int vfs_gpfs_stat(struct vfs_handle_struct *handle, struct smb_filename *smb_fname) { struct gpfs_winattr attrs; char *fname = NULL; NTSTATUS status; int ret; ret = SMB_VFS_NEXT_STAT(handle, smb_fname); if (ret == -1) { return -1; } status = get_full_smb_filename(talloc_tos(), smb_fname, &fname); if (!NT_STATUS_IS_OK(status)) { errno = map_errno_from_nt_status(status); return -1; } ret = get_gpfs_winattrs(CONST_DISCARD(char *, fname), &attrs); TALLOC_FREE(fname); if (ret == 0) { smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec; smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec; } return 0; } static int vfs_gpfs_fstat(struct vfs_handle_struct *handle, struct files_struct *fsp, SMB_STRUCT_STAT *sbuf) { struct gpfs_winattr attrs; int ret; ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf); if (ret == -1) { return -1; } if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) { return 0; } ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs); if (ret == 0) { sbuf->st_ex_btime.tv_sec = attrs.creationTime.tv_sec; sbuf->st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec; } return 0; } static int vfs_gpfs_lstat(struct vfs_handle_struct *handle, struct smb_filename *smb_fname) { struct gpfs_winattr attrs; char *path = NULL; NTSTATUS status; int ret; ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname); if (ret == -1) { return -1; } status = get_full_smb_filename(talloc_tos(), smb_fname, &path); if (!NT_STATUS_IS_OK(status)) { errno = map_errno_from_nt_status(status); return -1; } ret = get_gpfs_winattrs(CONST_DISCARD(char *, path), &attrs); TALLOC_FREE(path); if (ret == 0) { smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec; smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec; } return 0; } static int vfs_gpfs_ntimes(struct vfs_handle_struct *handle, const struct smb_filename *smb_fname, struct smb_file_time *ft) { struct gpfs_winattr attrs; int ret; char *path = NULL; NTSTATUS status; ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft); if(ret == -1){ DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed\n")); return -1; } if(null_timespec(ft->create_time)){ DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n")); return 0; } status = get_full_smb_filename(talloc_tos(), smb_fname, &path); if (!NT_STATUS_IS_OK(status)) { errno = map_errno_from_nt_status(status); return -1; } attrs.winAttrs = 0; attrs.creationTime.tv_sec = ft->create_time.tv_sec; attrs.creationTime.tv_nsec = ft->create_time.tv_nsec; ret = set_gpfs_winattrs(CONST_DISCARD(char *, path), GPFS_WINATTR_SET_CREATION_TIME, &attrs); if(ret == -1){ DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret)); return -1; } return 0; } static struct vfs_fn_pointers vfs_gpfs_fns = { .kernel_flock = vfs_gpfs_kernel_flock, .linux_setlease = vfs_gpfs_setlease, .get_real_filename = vfs_gpfs_get_real_filename, .fget_nt_acl = gpfsacl_fget_nt_acl, .get_nt_acl = gpfsacl_get_nt_acl, .fset_nt_acl = gpfsacl_fset_nt_acl, .sys_acl_get_file = gpfsacl_sys_acl_get_file, .sys_acl_get_fd = gpfsacl_sys_acl_get_fd, .sys_acl_set_file = gpfsacl_sys_acl_set_file, .sys_acl_set_fd = gpfsacl_sys_acl_set_fd, .sys_acl_delete_def_file = gpfsacl_sys_acl_delete_def_file, .chmod = vfs_gpfs_chmod, .fchmod = vfs_gpfs_fchmod, .close_fn = vfs_gpfs_close, .setxattr = gpfs_set_xattr, .getxattr = gpfs_get_xattr, .stat = vfs_gpfs_stat, .fstat = vfs_gpfs_fstat, .lstat = vfs_gpfs_lstat, .ntimes = vfs_gpfs_ntimes, }; NTSTATUS vfs_gpfs_init(void); NTSTATUS vfs_gpfs_init(void) { init_gpfs(); return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs", &vfs_gpfs_fns); }