/* Unix SMB/CIFS implementation. Wrap gpfs calls in vfs functions. Copyright (C) Christian Ambach 2006 Major code contributions by Chetan Shringarpure and Gomati Mohanan 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 "smbd/smbd.h" #include "librpc/gen_ndr/ndr_xattr.h" #include "include/smbprofile.h" #include "modules/non_posix_acls.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_VFS #include #include "nfs4_acls.h" #include "vfs_gpfs.h" #include "system/filesys.h" #include "auth.h" #include "lib/util/tevent_unix.h" struct gpfs_config_data { bool sharemodes; bool leases; bool hsm; bool syncio; bool winattr; bool ftruncate; bool getrealfilename; bool dfreequota; bool prealloc; bool acl; bool settimes; bool recalls; }; static inline unsigned int gpfs_acl_flags(gpfs_acl_t *gacl) { if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */ /* gacl->v4Level1.acl_flags requires gpfs 3.5 */ return *(unsigned int *)&gacl->ace_v4; } return 0; } static inline gpfs_ace_v4_t *gpfs_ace_ptr(gpfs_acl_t *gacl, unsigned int i) { if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */ /* &gacl->v4Level1.ace_v4[i] requires gpfs 3.5 */ char *ptr = (char *)&gacl->ace_v4[i] + sizeof(unsigned int); return (gpfs_ace_v4_t *)ptr; } return &gacl->ace_v4[i]; } static int vfs_gpfs_kernel_flock(vfs_handle_struct *handle, files_struct *fsp, uint32 share_mode, uint32 access_mask) { struct gpfs_config_data *config; int ret = 0; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if(!config->sharemodes) { return 0; } START_PROFILE(syscall_kernel_flock); kernel_flock(fsp->fh->fd, share_mode, access_mask); if (!set_gpfs_sharemode(fsp, access_mask, fsp->share_access)) { ret = -1; } END_PROFILE(syscall_kernel_flock); return ret; } static int vfs_gpfs_close(vfs_handle_struct *handle, files_struct *fsp) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (config->sharemodes && (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) { struct gpfs_config_data *config; int ret=0; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (linux_set_lease_sighandler(fsp->fh->fd) == -1) return -1; START_PROFILE(syscall_linux_setlease); if (config->leases) { /* * Ensure the lease owner is root to allow * correct delivery of lease-break signals. */ become_root(); ret = set_gpfs_lease(fsp->fh->fd,leasetype); unbecome_root(); } 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; bool mangled; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->getrealfilename) { return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name, mem_ctx, found_name); } mangled = mangle_is_mangled(name, handle->conn->params); if (mangled) { return SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name, mem_ctx, found_name); } 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 sd2gpfs_control(uint16_t control, struct gpfs_acl *gacl) { unsigned int gpfs_aclflags = 0; control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED | SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED | SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED | SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT; gpfs_aclflags = control << 8; if (!(control & SEC_DESC_DACL_PRESENT)) gpfs_aclflags |= 0x00800000; /* ACL4_FLAG_NULL_DACL; */ if (!(control & SEC_DESC_SACL_PRESENT)) gpfs_aclflags |= 0x01000000; /* ACL4_FLAG_NULL_SACL; */ gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS*/ /* gacl->v4Level1.acl_flags requires gpfs 3.5 */ *(unsigned int *)&gacl->ace_v4 = gpfs_aclflags; } static uint16_t gpfs2sd_control(unsigned int gpfs_aclflags) { uint16_t control = gpfs_aclflags >> 8; control &= SEC_DESC_DACL_PROTECTED | SEC_DESC_SACL_PROTECTED | SEC_DESC_DACL_AUTO_INHERITED | SEC_DESC_SACL_AUTO_INHERITED | SEC_DESC_DACL_DEFAULTED | SEC_DESC_SACL_DEFAULTED | SEC_DESC_DACL_PRESENT | SEC_DESC_SACL_PRESENT; control |= SEC_DESC_SELF_RELATIVE; return control; } static void gpfs_dumpacl(int level, struct gpfs_acl *gacl) { gpfs_aclCount_t i; if (gacl==NULL) { DEBUG(0, ("gpfs acl is NULL\n")); return; } DEBUG(level, ("len: %d, level: %d, version: %d, nace: %d, " "control: %x\n", gacl->acl_len, gacl->acl_level, gacl->acl_version, gacl->acl_nace, gpfs_acl_flags(gacl))); for(i=0; iacl_nace; i++) { struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, 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)); } } /* * get the ACL from GPFS, allocated on the specified mem_ctx * internally retries when initial buffer was too small * * caller needs to cast result to either * raw = yes: struct gpfs_opaque_acl * raw = no: struct gpfs_acl * */ static void *vfs_gpfs_getacl(TALLOC_CTX *mem_ctx, const char *fname, const bool raw, const gpfs_aclType_t type) { void *aclbuf; size_t size = 512; int ret, flags; unsigned int *len; size_t struct_size; again: aclbuf = talloc_zero_size(mem_ctx, size); if (aclbuf == NULL) { errno = ENOMEM; return NULL; } if (raw) { struct gpfs_opaque_acl *buf = (struct gpfs_opaque_acl *) aclbuf; buf->acl_type = type; flags = GPFS_GETACL_NATIVE; len = (unsigned int *) &(buf->acl_buffer_len); struct_size = sizeof(struct gpfs_opaque_acl); } else { struct gpfs_acl *buf = (struct gpfs_acl *) aclbuf; buf->acl_type = type; buf->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */ flags = GPFS_GETACL_STRUCT; len = &(buf->acl_len); /* reserve space for control flags in gpfs 3.5 and beyond */ struct_size = sizeof(struct gpfs_acl) + sizeof(unsigned int); } /* set the length of the buffer as input value */ *len = size; errno = 0; ret = smbd_gpfs_getacl(discard_const_p(char, fname), flags, aclbuf); if ((ret != 0) && (errno == ENOSPC)) { /* * get the size needed to accommodate the complete buffer * * the value returned only applies to the ACL blob in the * struct so make sure to also have headroom for the first * struct members by adding room for the complete struct * (might be a few bytes too much then) */ size = *len + struct_size; talloc_free(aclbuf); DEBUG(10, ("Increasing ACL buffer size to %zu\n", size)); goto again; } if (ret != 0) { DEBUG(5, ("smbd_gpfs_getacl failed with %s\n", strerror(errno))); talloc_free(aclbuf); return NULL; } return aclbuf; } /* 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(TALLOC_CTX *mem_ctx, const char *fname, SMB4ACL_T **ppacl) { gpfs_aclCount_t i; struct gpfs_acl *gacl = NULL; DEBUG(10, ("gpfs_get_nfs4_acl invoked for %s\n", fname)); /* Get the ACL */ gacl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fname, false, 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 */ talloc_free(gacl); return 1; } *ppacl = smb_create_smb4acl(mem_ctx); if (gacl->acl_level == 1) { /* GPFS_ACL_LEVEL_V4FLAGS */ uint16_t control = gpfs2sd_control(gpfs_acl_flags(gacl)); smbacl4_set_controlflags(*ppacl, control); } DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d, control: %x\n", gacl->acl_len, gacl->acl_level, gacl->acl_version, gacl->acl_nace, gpfs_acl_flags(gacl))); for (i=0; iacl_nace; i++) { struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, 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 redundant deny entries */ if (i > 0 && gace->aceType == SMB_ACE4_ACCESS_DENIED_ACE_TYPE) { struct gpfs_ace_v4 *prev = gpfs_ace_ptr(gacl, 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) { /* it's redundant - skip it */ continue; } } smbace.aceType = gace->aceType; smbace.aceFlags = gace->aceFlags; smbace.aceMask = gace->aceMask; smb_add_ace4(*ppacl, &smbace); } talloc_free(gacl); return 0; } static NTSTATUS gpfsacl_fget_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info, TALLOC_CTX *mem_ctx, struct security_descriptor **ppdesc) { SMB4ACL_T *pacl = NULL; int result; struct gpfs_config_data *config; TALLOC_CTX *frame = talloc_stackframe(); NTSTATUS status; *ppdesc = NULL; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return NT_STATUS_INTERNAL_ERROR); if (!config->acl) { status = SMB_VFS_NEXT_FGET_NT_ACL(handle, fsp, security_info, mem_ctx, ppdesc); TALLOC_FREE(frame); return status; } result = gpfs_get_nfs4_acl(frame, fsp->fsp_name->base_name, &pacl); if (result == 0) { status = smb_fget_nt_acl_nfs4(fsp, security_info, mem_ctx, ppdesc, pacl); TALLOC_FREE(frame); return status; } if (result > 0) { DEBUG(10, ("retrying with posix acl...\n")); status = posix_fget_nt_acl(fsp, security_info, mem_ctx, ppdesc); TALLOC_FREE(frame); return status; } TALLOC_FREE(frame); /* 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, TALLOC_CTX *mem_ctx, struct security_descriptor **ppdesc) { SMB4ACL_T *pacl = NULL; int result; struct gpfs_config_data *config; TALLOC_CTX *frame = talloc_stackframe(); NTSTATUS status; *ppdesc = NULL; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return NT_STATUS_INTERNAL_ERROR); if (!config->acl) { status = SMB_VFS_NEXT_GET_NT_ACL(handle, name, security_info, mem_ctx, ppdesc); TALLOC_FREE(frame); return status; } result = gpfs_get_nfs4_acl(frame, name, &pacl); if (result == 0) { status = smb_get_nt_acl_nfs4(handle->conn, name, security_info, mem_ctx, ppdesc, pacl); TALLOC_FREE(frame); return status; } if (result > 0) { DEBUG(10, ("retrying with posix acl...\n")); status = posix_get_nt_acl(handle->conn, name, security_info, mem_ctx, ppdesc); TALLOC_FREE(frame); return status; } /* GPFS ACL was not read, something wrong happened, error code is set in errno */ TALLOC_FREE(frame); return map_nt_error_from_unix(errno); } static struct gpfs_acl *vfs_gpfs_smbacl2gpfsacl(TALLOC_CTX *mem_ctx, files_struct *fsp, SMB4ACL_T *smbacl, bool controlflags) { struct gpfs_acl *gacl; gpfs_aclLen_t gacl_len; SMB4ACE_T *smbace; gacl_len = offsetof(gpfs_acl_t, ace_v4) + sizeof(unsigned int) + smb_get_naces(smbacl) * 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 NULL; } gacl->acl_level = 0; /* GPFS_ACL_LEVEL_BASE */ gacl->acl_version = GPFS_ACL_VERSION_NFS4; gacl->acl_type = GPFS_ACL_TYPE_NFS4; gacl->acl_nace = 0; /* change later... */ if (controlflags) { gacl->acl_level = 1; /* GPFS_ACL_LEVEL_V4FLAGS */ sd2gpfs_control(smbacl4_get_controlflags(smbacl), gacl); } for (smbace=smb_first_ace4(smbacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) { struct gpfs_ace_v4 *gace = gpfs_ace_ptr(gacl, 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++; } gacl->acl_len = (char *)gpfs_ace_ptr(gacl, gacl->acl_nace) - (char *)gacl; return gacl; } static bool gpfsacl_process_smbacl(vfs_handle_struct *handle, files_struct *fsp, SMB4ACL_T *smbacl) { int ret; struct gpfs_acl *gacl; TALLOC_CTX *mem_ctx = talloc_tos(); gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, true); if (gacl == NULL) { /* out of memory */ return False; } ret = smbd_gpfs_putacl(fsp->fsp_name->base_name, GPFS_PUTACL_STRUCT | GPFS_ACL_SAMBA, gacl); if ((ret != 0) && (errno == EINVAL)) { DEBUG(10, ("Retry without nfs41 control flags\n")); talloc_free(gacl); gacl = vfs_gpfs_smbacl2gpfsacl(mem_ctx, fsp, smbacl, false); if (gacl == NULL) { /* out of memory */ return False; } 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(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd) { struct gpfs_acl *acl; NTSTATUS result = NT_STATUS_ACCESS_DENIED; acl = (struct gpfs_acl*) vfs_gpfs_getacl(talloc_tos(), fsp->fsp_name->base_name, false, 0); if (acl == NULL) { return map_nt_error_from_unix(errno); } 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")); talloc_free(acl); return NT_STATUS_NOT_SUPPORTED; } result = smb_set_nt_acl_nfs4(handle, fsp, security_info_sent, psd, gpfsacl_process_smbacl); } else { /* assume POSIX ACL - by default... */ result = set_nt_acl(fsp, security_info_sent, psd); } talloc_free(acl); return result; } static NTSTATUS gpfsacl_fset_nt_acl(vfs_handle_struct *handle, files_struct *fsp, uint32 security_info_sent, const struct security_descriptor *psd) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return NT_STATUS_INTERNAL_ERROR); if (!config->acl) { return SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd); } return gpfsacl_set_nt_acl_internal(handle, fsp, security_info_sent, psd); } static SMB_ACL_T gpfs2smb_acl(const struct gpfs_acl *pacl, TALLOC_CTX *mem_ctx) { SMB_ACL_T result; gpfs_aclCount_t i; result = sys_acl_init(mem_ctx); if (result == NULL) { errno = ENOMEM; return NULL; } result->count = pacl->acl_nace; result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry, result->count); if (result->acl == NULL) { TALLOC_FREE(result); errno = ENOMEM; return NULL; } for (i=0; iacl_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->info.user.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->info.group.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)); TALLOC_FREE(result); errno = EINVAL; 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, TALLOC_CTX *mem_ctx) { struct gpfs_acl *pacl; SMB_ACL_T result = NULL; pacl = vfs_gpfs_getacl(talloc_tos(), path, false, type); if (pacl == NULL) { DEBUG(10, ("vfs_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, mem_ctx); if (result != NULL) { errno = 0; } done: if (pacl != NULL) { talloc_free(pacl); } if (errno != 0) { TALLOC_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, TALLOC_CTX *mem_ctx) { gpfs_aclType_t gpfs_type; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return NULL); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_GET_FILE(handle, path_p, type, mem_ctx); } 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, mem_ctx); } static SMB_ACL_T gpfsacl_sys_acl_get_fd(vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return NULL); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_GET_FD(handle, fsp, mem_ctx); } return gpfsacl_get_posix_acl(fsp->fsp_name->base_name, GPFS_ACL_TYPE_ACCESS, mem_ctx); } static int gpfsacl_sys_acl_blob_get_file(vfs_handle_struct *handle, const char *path_p, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob) { struct gpfs_config_data *config; struct gpfs_opaque_acl *acl = NULL; DATA_BLOB aclblob; int result; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle, path_p, mem_ctx, blob_description, blob); } errno = 0; acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx, path_p, true, GPFS_ACL_TYPE_NFS4); if (errno) { DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n", errno, strerror(errno))); /* EINVAL means POSIX ACL, bail out on other cases */ if (errno != EINVAL) { return -1; } } if (acl != NULL) { /* * file has NFSv4 ACL * * we only need the actual ACL blob here * acl_version will always be NFS4 because we asked * for NFS4 * acl_type is only used for POSIX ACLs */ aclblob.data = (uint8_t*) acl->acl_var_data; aclblob.length = acl->acl_buffer_len; *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl"); if (!*blob_description) { talloc_free(acl); errno = ENOMEM; return -1; } result = non_posix_sys_acl_blob_get_file_helper(handle, path_p, aclblob, mem_ctx, blob); talloc_free(acl); return result; } /* fall back to POSIX ACL */ return posix_sys_acl_blob_get_file(handle, path_p, mem_ctx, blob_description, blob); } static int gpfsacl_sys_acl_blob_get_fd(vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob) { struct gpfs_config_data *config; struct gpfs_opaque_acl *acl = NULL; DATA_BLOB aclblob; int result; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle, fsp, mem_ctx, blob_description, blob); } errno = 0; acl = (struct gpfs_opaque_acl *) vfs_gpfs_getacl(mem_ctx, fsp->fsp_name->base_name, true, GPFS_ACL_TYPE_NFS4); if (errno) { DEBUG(5, ("vfs_gpfs_getacl finished with errno %d: %s\n", errno, strerror(errno))); /* EINVAL means POSIX ACL, bail out on other cases */ if (errno != EINVAL) { return -1; } } if (acl != NULL) { /* * file has NFSv4 ACL * * we only need the actual ACL blob here * acl_version will always be NFS4 because we asked * for NFS4 * acl_type is only used for POSIX ACLs */ aclblob.data = (uint8_t*) acl->acl_var_data; aclblob.length = acl->acl_buffer_len; *blob_description = talloc_strdup(mem_ctx, "gpfs_nfs4_acl"); if (!*blob_description) { talloc_free(acl); errno = ENOMEM; return -1; } result = non_posix_sys_acl_blob_get_fd_helper(handle, fsp, aclblob, mem_ctx, blob); talloc_free(acl); return result; } /* fall back to POSIX ACL */ return posix_sys_acl_blob_get_fd(handle, fsp, mem_ctx, blob_description, blob); } 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; DEBUG(10, ("smb2gpfs_acl: Got ACL with %d entries\n", pacl->count)); len = offsetof(gpfs_acl_t, ace_v1) + (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; icount; 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->info.user.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->info.group.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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_SET_FILE(handle, name, type, theacl); } gpfs_acl = smb2gpfs_acl(theacl, type); if (gpfs_acl == NULL) { return -1; } result = smbd_gpfs_putacl(discard_const_p(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) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_SET_FD(handle, fsp, 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) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->acl) { return SMB_VFS_NEXT_SYS_ACL_DELETE_DEF_FILE(handle, 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(vfs_handle_struct *handle, 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; TALLOC_CTX *frame = talloc_stackframe(); DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode)); result = gpfs_get_nfs4_acl(frame, path, &pacl); if (result) { TALLOC_FREE(frame); 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); fake_fsp.fsp_name = synthetic_smb_fname( frame, path, NULL, NULL); if (fake_fsp.fsp_name == NULL) { errno = ENOMEM; TALLOC_FREE(frame); return -1; } /* put the acl */ if (gpfsacl_process_smbacl(handle, &fake_fsp, pacl) == False) { TALLOC_FREE(frame); return -1; } TALLOC_FREE(frame); 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; smb_fname_cpath = synthetic_smb_fname(talloc_tos(), path, NULL, NULL); if (smb_fname_cpath == NULL) { errno = ENOMEM; return -1; } 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(handle, 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(handle, 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){ struct xattr_DOSATTRIB dosattrib; enum ndr_err_code ndr_err; DATA_BLOB blob; unsigned int dosmode=0; struct gpfs_winattr attrs; int ret = 0; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->winattr) { DEBUG(10, ("gpfs_set_xattr:name is %s -> next\n",name)); return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags); } DEBUG(10, ("gpfs_set_xattr: %s \n",path)); /* Only handle DOS Attributes */ if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){ DEBUG(5, ("gpfs_set_xattr:name is %s\n",name)); return SMB_VFS_NEXT_SETXATTR(handle,path,name,value,size,flags); } blob.data = discard_const_p(uint8_t, value); blob.length = size; ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &dosattrib, (ndr_pull_flags_fn_t)ndr_pull_xattr_DOSATTRIB); if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { DEBUG(1, ("gpfs_set_xattr: bad ndr decode " "from EA on file %s: Error = %s\n", path, ndr_errstr(ndr_err))); return false; } if (dosattrib.version != 3) { DEBUG(1, ("gpfs_set_xattr: expected dosattrib version 3, got " "%d\n", (int)dosattrib.version)); return false; } if (!(dosattrib.info.info3.valid_flags & XATTR_DOSINFO_ATTRIB)) { DEBUG(10, ("gpfs_set_xattr: XATTR_DOSINFO_ATTRIB not " "valid, ignoring\n")); return true; } dosmode = dosattrib.info.info3.attrib; attrs.winAttrs = 0; /*Just map RD_ONLY, ARCHIVE, SYSTEM HIDDEN and SPARSE. 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; } if (dosmode & FILE_ATTRIBUTE_SPARSE) { attrs.winAttrs |= GPFS_WINATTR_SPARSE_FILE; } ret = set_gpfs_winattrs(discard_const_p(char, path), GPFS_WINATTR_SET_ATTRS, &attrs); if ( ret == -1){ if (errno == ENOSYS) { return SMB_VFS_NEXT_SETXATTR(handle, path, name, value, size, flags); } 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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->winattr) { DEBUG(10, ("gpfs_get_xattr:name is %s -> next\n",name)); return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size); } DEBUG(10, ("gpfs_get_xattr: %s \n",path)); /* Only handle DOS Attributes */ if (strcmp(name,SAMBA_XATTR_DOS_ATTRIB) != 0){ DEBUG(5, ("gpfs_get_xattr:name is %s\n",name)); return SMB_VFS_NEXT_GETXATTR(handle,path,name,value,size); } ret = get_gpfs_winattrs(discard_const_p(char, path), &attrs); if ( ret == -1){ if (errno == ENOSYS) { return SMB_VFS_NEXT_GETXATTR(handle, path, name, value, size); } DEBUG(1, ("gpfs_get_xattr: Get GPFS attributes failed: " "%d (%s)\n", ret, strerror(errno))); return -1; } DEBUG(10, ("gpfs_get_xattr:Got attributes: 0x%x\n",attrs.winAttrs)); /*Just map RD_ONLY, ARCHIVE, SYSTEM, HIDDEN and SPARSE. 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; } if (attrs.winAttrs & GPFS_WINATTR_SPARSE_FILE) { dosmode |= FILE_ATTRIBUTE_SPARSE; } snprintf(attrstr, size, "0x%2.2x", (unsigned int)(dosmode & SAMBA_ATTRIBUTES_MASK)); DEBUG(10, ("gpfs_get_xattr: returning %s\n",attrstr)); return 4; } #if defined(HAVE_FSTATAT) static int stat_with_capability(struct vfs_handle_struct *handle, struct smb_filename *smb_fname, int flag) { int fd = -1; bool b; char *dir_name; const char *rel_name = NULL; struct stat st; int ret = -1; b = parent_dirname(talloc_tos(), smb_fname->base_name, &dir_name, &rel_name); if (!b) { errno = ENOMEM; return -1; } fd = open(dir_name, O_RDONLY, 0); TALLOC_FREE(dir_name); if (fd == -1) { return -1; } set_effective_capability(DAC_OVERRIDE_CAPABILITY); ret = fstatat(fd, rel_name, &st, flag); drop_effective_capability(DAC_OVERRIDE_CAPABILITY); close(fd); if (ret == 0) { init_stat_ex_from_stat( &smb_fname->st, &st, lp_fake_directory_create_times(SNUM(handle->conn))); } return ret; } #endif 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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); ret = SMB_VFS_NEXT_STAT(handle, smb_fname); #if defined(HAVE_FSTATAT) if (ret == -1 && errno == EACCES) { DEBUG(10, ("Trying stat with capability for %s\n", smb_fname->base_name)); ret = stat_with_capability(handle, smb_fname, 0); } #endif if (ret == -1) { return -1; } if (!config->winattr) { return 0; } 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(discard_const_p(char, fname), &attrs); TALLOC_FREE(fname); if (ret == 0) { smb_fname->st.st_ex_calculated_birthtime = false; smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec; smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec; smb_fname->st.vfs_private = attrs.winAttrs; } 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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); ret = SMB_VFS_NEXT_FSTAT(handle, fsp, sbuf); if (ret == -1) { return -1; } if ((fsp->fh == NULL) || (fsp->fh->fd == -1)) { return 0; } if (!config->winattr) { return 0; } ret = smbd_fget_gpfs_winattrs(fsp->fh->fd, &attrs); if (ret == 0) { sbuf->st_ex_calculated_birthtime = false; 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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); ret = SMB_VFS_NEXT_LSTAT(handle, smb_fname); #if defined(HAVE_FSTATAT) if (ret == -1 && errno == EACCES) { DEBUG(10, ("Trying lstat with capability for %s\n", smb_fname->base_name)); ret = stat_with_capability(handle, smb_fname, AT_SYMLINK_NOFOLLOW); } #endif if (ret == -1) { return -1; } if (!config->winattr) { 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; } ret = get_gpfs_winattrs(discard_const_p(char, path), &attrs); TALLOC_FREE(path); if (ret == 0) { smb_fname->st.st_ex_calculated_birthtime = false; smb_fname->st.st_ex_btime.tv_sec = attrs.creationTime.tv_sec; smb_fname->st.st_ex_btime.tv_nsec = attrs.creationTime.tv_nsec; smb_fname->st.vfs_private = attrs.winAttrs; } 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; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, 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; } /* Try to use gpfs_set_times if it is enabled and available */ if (config->settimes) { ret = smbd_gpfs_set_times_path(path, ft); if (ret == 0 || (ret == -1 && errno != ENOSYS)) { return ret; } } DEBUG(10,("gpfs_set_times() not available or disabled, " "use ntimes and winattr\n")); ret = SMB_VFS_NEXT_NTIMES(handle, smb_fname, ft); if(ret == -1){ /* don't complain if access was denied */ if (errno != EPERM && errno != EACCES) { DEBUG(1,("vfs_gpfs_ntimes: SMB_VFS_NEXT_NTIMES failed:" "%s", strerror(errno))); } return -1; } if(null_timespec(ft->create_time)){ DEBUG(10,("vfs_gpfs_ntimes:Create Time is NULL\n")); return 0; } if (!config->winattr) { return 0; } 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(discard_const_p(char, path), GPFS_WINATTR_SET_CREATION_TIME, &attrs); if(ret == -1 && errno != ENOSYS){ DEBUG(1,("vfs_gpfs_ntimes: set GPFS ntimes failed %d\n",ret)); return -1; } return 0; } static int vfs_gpfs_fallocate(struct vfs_handle_struct *handle, struct files_struct *fsp, enum vfs_fallocate_mode mode, off_t offset, off_t len) { int ret; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->prealloc) { /* you should better not run fallocate() on GPFS at all */ errno = ENOTSUP; return -1; } if (mode == VFS_FALLOCATE_KEEP_SIZE) { DEBUG(10, ("Unsupported VFS_FALLOCATE_KEEP_SIZE\n")); errno = ENOTSUP; return -1; } ret = smbd_gpfs_prealloc(fsp->fh->fd, offset, len); if (ret == -1 && errno != ENOSYS) { DEBUG(0, ("GPFS prealloc failed: %s\n", strerror(errno))); } else if (ret == -1 && errno == ENOSYS) { DEBUG(10, ("GPFS prealloc not supported.\n")); } else { DEBUG(10, ("GPFS prealloc succeeded.\n")); } return ret; } static int vfs_gpfs_ftruncate(vfs_handle_struct *handle, files_struct *fsp, off_t len) { int result; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->ftruncate) { return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len); } result = smbd_gpfs_ftruncate(fsp->fh->fd, len); if ((result == -1) && (errno == ENOSYS)) { return SMB_VFS_NEXT_FTRUNCATE(handle, fsp, len); } return result; } static bool vfs_gpfs_is_offline(struct vfs_handle_struct *handle, const struct smb_filename *fname, SMB_STRUCT_STAT *sbuf) { struct gpfs_winattr attrs; char *path = NULL; NTSTATUS status; struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (!config->winattr) { return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf); } status = get_full_smb_filename(talloc_tos(), fname, &path); if (!NT_STATUS_IS_OK(status)) { errno = map_errno_from_nt_status(status); return -1; } if (VALID_STAT(*sbuf)) { attrs.winAttrs = sbuf->vfs_private; } else { int ret; ret = get_gpfs_winattrs(path, &attrs); if (ret == -1) { TALLOC_FREE(path); return false; } } if ((attrs.winAttrs & GPFS_WINATTR_OFFLINE) != 0) { DEBUG(10, ("%s is offline\n", path)); TALLOC_FREE(path); return true; } DEBUG(10, ("%s is online\n", path)); TALLOC_FREE(path); return SMB_VFS_NEXT_IS_OFFLINE(handle, fname, sbuf); } static bool vfs_gpfs_aio_force(struct vfs_handle_struct *handle, struct files_struct *fsp) { return vfs_gpfs_is_offline(handle, fsp->fsp_name, &fsp->fsp_name->st); } static ssize_t vfs_gpfs_sendfile(vfs_handle_struct *handle, int tofd, files_struct *fsp, const DATA_BLOB *hdr, off_t offset, size_t n) { if ((fsp->fsp_name->st.vfs_private & GPFS_WINATTR_OFFLINE) != 0) { errno = ENOSYS; return -1; } return SMB_VFS_NEXT_SENDFILE(handle, tofd, fsp, hdr, offset, n); } static int vfs_gpfs_connect(struct vfs_handle_struct *handle, const char *service, const char *user) { struct gpfs_config_data *config; int ret; smbd_gpfs_lib_init(); config = talloc_zero(handle->conn, struct gpfs_config_data); if (!config) { DEBUG(0, ("talloc_zero() failed\n")); errno = ENOMEM; return -1; } ret = SMB_VFS_NEXT_CONNECT(handle, service, user); if (ret < 0) { TALLOC_FREE(config); return ret; } config->sharemodes = lp_parm_bool(SNUM(handle->conn), "gpfs", "sharemodes", true); config->leases = lp_parm_bool(SNUM(handle->conn), "gpfs", "leases", true); config->hsm = lp_parm_bool(SNUM(handle->conn), "gpfs", "hsm", false); config->syncio = lp_parm_bool(SNUM(handle->conn), "gpfs", "syncio", false); config->winattr = lp_parm_bool(SNUM(handle->conn), "gpfs", "winattr", false); config->ftruncate = lp_parm_bool(SNUM(handle->conn), "gpfs", "ftruncate", true); config->getrealfilename = lp_parm_bool(SNUM(handle->conn), "gpfs", "getrealfilename", true); config->dfreequota = lp_parm_bool(SNUM(handle->conn), "gpfs", "dfreequota", false); config->prealloc = lp_parm_bool(SNUM(handle->conn), "gpfs", "prealloc", true); config->acl = lp_parm_bool(SNUM(handle->conn), "gpfs", "acl", true); config->settimes = lp_parm_bool(SNUM(handle->conn), "gpfs", "settimes", true); config->recalls = lp_parm_bool(SNUM(handle->conn), "gpfs", "recalls", true); SMB_VFS_HANDLE_SET_DATA(handle, config, NULL, struct gpfs_config_data, return -1); if (config->leases) { /* * GPFS lease code is based on kernel oplock code * so make sure it is turned on */ if (!lp_kernel_oplocks(SNUM(handle->conn))) { DEBUG(5, ("Enabling kernel oplocks for " "gpfs:leases to work\n")); lp_do_parameter(SNUM(handle->conn), "kernel oplocks", "true"); } /* * as the kernel does not properly support Level II oplocks * and GPFS leases code is based on kernel infrastructure, we * need to turn off Level II oplocks if gpfs:leases is enabled */ if (lp_level2_oplocks(SNUM(handle->conn))) { DEBUG(5, ("gpfs:leases are enabled, disabling " "Level II oplocks\n")); lp_do_parameter(SNUM(handle->conn), "level2 oplocks", "false"); } } return 0; } static int vfs_gpfs_get_quotas(const char *path, uid_t uid, gid_t gid, int *fset_id, struct gpfs_quotaInfo *qi_user, struct gpfs_quotaInfo *qi_group, struct gpfs_quotaInfo *qi_fset) { int err; char *dir_path; bool b; /* * We want to always use the directory to get the fileset id, * because files might have a share mode. We also do not want * to get the parent directory when there is already a * directory to avoid stepping in a different fileset. The * path passed here is currently either "." or a filename, so * this is ok. The proper solution would be having a way to * query the fileset id without opening the file. */ b = parent_dirname(talloc_tos(), path, &dir_path, NULL); if (!b) { errno = ENOMEM; return -1; } DEBUG(10, ("path %s, directory %s\n", path, dir_path)); err = get_gpfs_fset_id(dir_path, fset_id); if (err) { DEBUG(0, ("Get fset id failed path %s, dir %s, errno %d.\n", path, dir_path, errno)); return err; } err = get_gpfs_quota(path, GPFS_USRQUOTA, uid, qi_user); if (err) { return err; } err = get_gpfs_quota(path, GPFS_GRPQUOTA, gid, qi_group); if (err) { return err; } err = get_gpfs_quota(path, GPFS_FILESETQUOTA, *fset_id, qi_fset); if (err) { return err; } return 0; } static void vfs_gpfs_disk_free_quota(struct gpfs_quotaInfo qi, time_t cur_time, uint64_t *dfree, uint64_t *dsize) { uint64_t usage, limit; /* * The quota reporting is done in units of 1024 byte blocks, but * sys_fsusage uses units of 512 byte blocks, adjust the block number * accordingly. Also filter possibly negative usage counts from gpfs. */ usage = qi.blockUsage < 0 ? 0 : (uint64_t)qi.blockUsage * 2; limit = (uint64_t)qi.blockHardLimit * 2; /* * When the grace time for the exceeded soft block quota has been * exceeded, the soft block quota becomes an additional hard limit. */ if (qi.blockSoftLimit && qi.blockGraceTime && cur_time > qi.blockGraceTime) { /* report disk as full */ *dfree = 0; *dsize = MIN(*dsize, usage); } if (!qi.blockHardLimit) return; if (usage >= limit) { /* report disk as full */ *dfree = 0; *dsize = MIN(*dsize, usage); } else { /* limit has not been reached, determine "free space" */ *dfree = MIN(*dfree, limit - usage); *dsize = MIN(*dsize, limit); } } static uint64_t vfs_gpfs_disk_free(vfs_handle_struct *handle, const char *path, bool small_query, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize) { struct security_unix_token *utok; struct gpfs_quotaInfo qi_user, qi_group, qi_fset; struct gpfs_config_data *config; int err, fset_id; time_t cur_time; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return (uint64_t)-1); if (!config->dfreequota) { return SMB_VFS_NEXT_DISK_FREE(handle, path, small_query, bsize, dfree, dsize); } err = sys_fsusage(path, dfree, dsize); if (err) { DEBUG (0, ("Could not get fs usage, errno %d\n", errno)); return SMB_VFS_NEXT_DISK_FREE(handle, path, small_query, bsize, dfree, dsize); } /* sys_fsusage returns units of 512 bytes */ *bsize = 512; DEBUG(10, ("fs dfree %llu, dsize %llu\n", (unsigned long long)*dfree, (unsigned long long)*dsize)); utok = handle->conn->session_info->unix_token; err = vfs_gpfs_get_quotas(path, utok->uid, utok->gid, &fset_id, &qi_user, &qi_group, &qi_fset); if (err) { return SMB_VFS_NEXT_DISK_FREE(handle, path, small_query, bsize, dfree, dsize); } cur_time = time(NULL); /* Adjust free space and size according to quota limits. */ vfs_gpfs_disk_free_quota(qi_user, cur_time, dfree, dsize); vfs_gpfs_disk_free_quota(qi_group, cur_time, dfree, dsize); /* Id 0 indicates the default quota, not an actual quota */ if (fset_id != 0) { vfs_gpfs_disk_free_quota(qi_fset, cur_time, dfree, dsize); } disk_norm(small_query, bsize, dfree, dsize); return *dfree; } static uint32_t vfs_gpfs_capabilities(struct vfs_handle_struct *handle, enum timestamp_set_resolution *p_ts_res) { struct gpfs_config_data *config; uint32_t next; next = SMB_VFS_NEXT_FS_CAPABILITIES(handle, p_ts_res); SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return next); if (config->hsm) { next |= FILE_SUPPORTS_REMOTE_STORAGE; } return next; } static int vfs_gpfs_open(struct vfs_handle_struct *handle, struct smb_filename *smb_fname, files_struct *fsp, int flags, mode_t mode) { struct gpfs_config_data *config; SMB_VFS_HANDLE_GET_DATA(handle, config, struct gpfs_config_data, return -1); if (config->hsm && !config->recalls) { if (VALID_STAT(smb_fname->st) && (smb_fname->st.vfs_private & GPFS_WINATTR_OFFLINE)) { DEBUG(10, ("Refusing access to offline file %s\n", fsp_str_dbg(fsp))); errno = EACCES; return -1; } } if (config->syncio) { flags |= O_SYNC; } return SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode); } static ssize_t vfs_gpfs_pread(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n, off_t offset) { ssize_t ret; ret = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset); DEBUG(10, ("vfs_private = %x\n", (unsigned int)fsp->fsp_name->st.vfs_private)); if ((ret != -1) && ((fsp->fsp_name->st.vfs_private & GPFS_WINATTR_OFFLINE) != 0)) { fsp->fsp_name->st.vfs_private &= ~GPFS_WINATTR_OFFLINE; notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED, FILE_NOTIFY_CHANGE_ATTRIBUTES, fsp->fsp_name->base_name); } return ret; } struct vfs_gpfs_pread_state { struct files_struct *fsp; ssize_t ret; int err; }; static void vfs_gpfs_pread_done(struct tevent_req *subreq); static struct tevent_req *vfs_gpfs_pread_send(struct vfs_handle_struct *handle, TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct files_struct *fsp, void *data, size_t n, off_t offset) { struct tevent_req *req, *subreq; struct vfs_gpfs_pread_state *state; req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pread_state); if (req == NULL) { return NULL; } state->fsp = fsp; subreq = SMB_VFS_NEXT_PREAD_SEND(state, ev, handle, fsp, data, n, offset); if (tevent_req_nomem(subreq, req)) { return tevent_req_post(req, ev); } tevent_req_set_callback(subreq, vfs_gpfs_pread_done, req); return req; } static void vfs_gpfs_pread_done(struct tevent_req *subreq) { struct tevent_req *req = tevent_req_callback_data( subreq, struct tevent_req); struct vfs_gpfs_pread_state *state = tevent_req_data( req, struct vfs_gpfs_pread_state); state->ret = SMB_VFS_PREAD_RECV(subreq, &state->err); TALLOC_FREE(subreq); tevent_req_done(req); } static ssize_t vfs_gpfs_pread_recv(struct tevent_req *req, int *err) { struct vfs_gpfs_pread_state *state = tevent_req_data( req, struct vfs_gpfs_pread_state); struct files_struct *fsp = state->fsp; if (tevent_req_is_unix_error(req, err)) { return -1; } *err = state->err; DEBUG(10, ("vfs_private = %x\n", (unsigned int)fsp->fsp_name->st.vfs_private)); if ((state->ret != -1) && ((fsp->fsp_name->st.vfs_private & GPFS_WINATTR_OFFLINE) != 0)) { fsp->fsp_name->st.vfs_private &= ~GPFS_WINATTR_OFFLINE; DEBUG(10, ("sending notify\n")); notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED, FILE_NOTIFY_CHANGE_ATTRIBUTES, fsp->fsp_name->base_name); } return state->ret; } static ssize_t vfs_gpfs_pwrite(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n, off_t offset) { ssize_t ret; ret = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset); DEBUG(10, ("vfs_private = %x\n", (unsigned int)fsp->fsp_name->st.vfs_private)); if ((ret != -1) && ((fsp->fsp_name->st.vfs_private & GPFS_WINATTR_OFFLINE) != 0)) { fsp->fsp_name->st.vfs_private &= ~GPFS_WINATTR_OFFLINE; notify_fname(handle->conn, NOTIFY_ACTION_MODIFIED, FILE_NOTIFY_CHANGE_ATTRIBUTES, fsp->fsp_name->base_name); } return ret; } struct vfs_gpfs_pwrite_state { struct files_struct *fsp; ssize_t ret; int err; }; static void vfs_gpfs_pwrite_done(struct tevent_req *subreq); static struct tevent_req *vfs_gpfs_pwrite_send( struct vfs_handle_struct *handle, TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct files_struct *fsp, const void *data, size_t n, off_t offset) { struct tevent_req *req, *subreq; struct vfs_gpfs_pwrite_state *state; req = tevent_req_create(mem_ctx, &state, struct vfs_gpfs_pwrite_state); if (req == NULL) { return NULL; } state->fsp = fsp; subreq = SMB_VFS_NEXT_PWRITE_SEND(state, ev, handle, fsp, data, n, offset); if (tevent_req_nomem(subreq, req)) { return tevent_req_post(req, ev); } tevent_req_set_callback(subreq, vfs_gpfs_pwrite_done, req); return req; } static void vfs_gpfs_pwrite_done(struct tevent_req *subreq) { struct tevent_req *req = tevent_req_callback_data( subreq, struct tevent_req); struct vfs_gpfs_pwrite_state *state = tevent_req_data( req, struct vfs_gpfs_pwrite_state); state->ret = SMB_VFS_PWRITE_RECV(subreq, &state->err); TALLOC_FREE(subreq); tevent_req_done(req); } static ssize_t vfs_gpfs_pwrite_recv(struct tevent_req *req, int *err) { struct vfs_gpfs_pwrite_state *state = tevent_req_data( req, struct vfs_gpfs_pwrite_state); struct files_struct *fsp = state->fsp; if (tevent_req_is_unix_error(req, err)) { return -1; } *err = state->err; DEBUG(10, ("vfs_private = %x\n", (unsigned int)fsp->fsp_name->st.vfs_private)); if ((state->ret != -1) && ((fsp->fsp_name->st.vfs_private & GPFS_WINATTR_OFFLINE) != 0)) { fsp->fsp_name->st.vfs_private &= ~GPFS_WINATTR_OFFLINE; DEBUG(10, ("sending notify\n")); notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED, FILE_NOTIFY_CHANGE_ATTRIBUTES, fsp->fsp_name->base_name); } return state->ret; } static struct vfs_fn_pointers vfs_gpfs_fns = { .connect_fn = vfs_gpfs_connect, .disk_free_fn = vfs_gpfs_disk_free, .fs_capabilities_fn = vfs_gpfs_capabilities, .kernel_flock_fn = vfs_gpfs_kernel_flock, .linux_setlease_fn = vfs_gpfs_setlease, .get_real_filename_fn = vfs_gpfs_get_real_filename, .fget_nt_acl_fn = gpfsacl_fget_nt_acl, .get_nt_acl_fn = gpfsacl_get_nt_acl, .fset_nt_acl_fn = gpfsacl_fset_nt_acl, .sys_acl_get_file_fn = gpfsacl_sys_acl_get_file, .sys_acl_get_fd_fn = gpfsacl_sys_acl_get_fd, .sys_acl_blob_get_file_fn = gpfsacl_sys_acl_blob_get_file, .sys_acl_blob_get_fd_fn = gpfsacl_sys_acl_blob_get_fd, .sys_acl_set_file_fn = gpfsacl_sys_acl_set_file, .sys_acl_set_fd_fn = gpfsacl_sys_acl_set_fd, .sys_acl_delete_def_file_fn = gpfsacl_sys_acl_delete_def_file, .chmod_fn = vfs_gpfs_chmod, .fchmod_fn = vfs_gpfs_fchmod, .close_fn = vfs_gpfs_close, .setxattr_fn = gpfs_set_xattr, .getxattr_fn = gpfs_get_xattr, .stat_fn = vfs_gpfs_stat, .fstat_fn = vfs_gpfs_fstat, .lstat_fn = vfs_gpfs_lstat, .ntimes_fn = vfs_gpfs_ntimes, .is_offline_fn = vfs_gpfs_is_offline, .aio_force_fn = vfs_gpfs_aio_force, .sendfile_fn = vfs_gpfs_sendfile, .fallocate_fn = vfs_gpfs_fallocate, .open_fn = vfs_gpfs_open, .pread_fn = vfs_gpfs_pread, .pread_send_fn = vfs_gpfs_pread_send, .pread_recv_fn = vfs_gpfs_pread_recv, .pwrite_fn = vfs_gpfs_pwrite, .pwrite_send_fn = vfs_gpfs_pwrite_send, .pwrite_recv_fn = vfs_gpfs_pwrite_recv, .ftruncate_fn = vfs_gpfs_ftruncate }; NTSTATUS vfs_gpfs_init(void); NTSTATUS vfs_gpfs_init(void) { init_gpfs(); return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs", &vfs_gpfs_fns); }