diff options
Diffstat (limited to 'sys/nfs4client/nfs4_idmap.c')
| -rw-r--r-- | sys/nfs4client/nfs4_idmap.c | 509 |
1 files changed, 0 insertions, 509 deletions
diff --git a/sys/nfs4client/nfs4_idmap.c b/sys/nfs4client/nfs4_idmap.c deleted file mode 100644 index 5a02b47..0000000 --- a/sys/nfs4client/nfs4_idmap.c +++ /dev/null @@ -1,509 +0,0 @@ -/* $FreeBSD$ */ -/* $Id: nfs4_idmap.c,v 1.4 2003/11/05 14:58:59 rees Exp $ */ - -/*- - * copyright (c) 2003 - * the regents of the university of michigan - * all rights reserved - * - * permission is granted to use, copy, create derivative works and redistribute - * this software and such derivative works for any purpose, so long as the name - * of the university of michigan is not used in any advertising or publicity - * pertaining to the use or distribution of this software without specific, - * written prior authorization. if the above copyright notice or any other - * identification of the university of michigan is included in any copy of any - * portion of this software, then the disclaimer below must also be included. - * - * this software is provided as is, without representation from the university - * of michigan as to its fitness for any purpose, and without warranty by the - * university of michigan of any kind, either express or implied, including - * without limitation the implied warranties of merchantability and fitness for - * a particular purpose. the regents of the university of michigan shall not be - * liable for any damages, including special, indirect, incidental, or - * consequential damages, with respect to any claim arising out of or in - * connection with the use of the software, even if it has been or is hereafter - * advised of the possibility of such damages. - */ - -/* TODO: - * o validate ascii - * */ - -#include <sys/param.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/lock.h> -#include <sys/lockmgr.h> -#include <sys/fnv_hash.h> -#include <sys/proc.h> -#include <sys/syscall.h> -#include <sys/sysent.h> -#include <sys/libkern.h> - -#include <rpc/rpcclnt.h> - -#include <nfs4client/nfs4_dev.h> -#include <nfs4client/nfs4_idmap.h> - - -#ifdef IDMAPVERBOSE -#define IDMAP_DEBUG(...) printf(__VA_ARGS__); -#else -#define IDMAP_DEBUG(...) -#endif - -#define IDMAP_HASH_SIZE 37 - -MALLOC_DEFINE(M_IDMAP, "idmap", "idmap"); - -#define idmap_entry_get(ID) (ID) = malloc(sizeof(struct idmap_entry), M_IDMAP, M_WAITOK | M_ZERO) -#define idmap_entry_put(ID) free((ID), M_IDMAP) - - - -struct idmap_entry { - struct idmap_msg id_info; - - TAILQ_ENTRY(idmap_entry) id_entry_id; - TAILQ_ENTRY(idmap_entry) id_entry_name; -}; - -struct idmap_hash { - TAILQ_HEAD(, idmap_entry) hash_name[IDMAP_HASH_SIZE]; - TAILQ_HEAD(, idmap_entry) hash_id[IDMAP_HASH_SIZE]; - - struct lock hash_lock; -}; - -#define IDMAP_RLOCK(lock) lockmgr(lock, LK_SHARED, NULL) -#define IDMAP_WLOCK(lock) lockmgr(lock, LK_EXCLUSIVE, NULL) -#define IDMAP_UNLOCK(lock) lockmgr(lock, LK_RELEASE, NULL) - - -static struct idmap_hash idmap_uid_hash; -static struct idmap_hash idmap_gid_hash; - -static struct idmap_entry * idmap_name_lookup(uint32_t, char *); -static struct idmap_entry * idmap_id_lookup(uint32_t, ident_t); -static int idmap_upcall_name(uint32_t, char *, struct idmap_entry **); -static int idmap_upcall_id(uint32_t , ident_t, struct idmap_entry ** ); -static int idmap_add(struct idmap_entry *); - -static int -idmap_upcall_name(uint32_t type, char * name, struct idmap_entry ** found) -{ - int error; - struct idmap_entry * e; - size_t len, siz; - - if (type > IDMAP_MAX_TYPE || type == 0) { - IDMAP_DEBUG("bad type %d\n", type); - return EINVAL; /* XXX */ - } - - if (name == NULL || (len = strlen(name)) == 0 || len > IDMAP_MAXNAMELEN) { - IDMAP_DEBUG("idmap_upcall_name: bad name\n"); - return EFAULT; /* XXX */ - } - - e = malloc(sizeof(struct idmap_entry), M_IDMAP, - M_WAITOK | M_ZERO); - - e->id_info.id_type = type; - bcopy(name, e->id_info.id_name, len); - e->id_info.id_namelen = len; - - - siz = sizeof(struct idmap_msg); - error = nfs4dev_call(NFS4DEV_TYPE_IDMAP, (caddr_t)&e->id_info, siz, - (caddr_t)&e->id_info, &siz); - - if (error) { - IDMAP_DEBUG("error %d in nfs4dev_upcall()\n", error); - *found = NULL; - return error; - } - - if (siz != sizeof(struct idmap_msg)) { - IDMAP_DEBUG("bad size of returned message\n"); - *found = NULL; - return EFAULT; - } - - *found = e; - return 0; -} - -static int -idmap_upcall_id(uint32_t type, ident_t id, struct idmap_entry ** found) -{ - int error; - struct idmap_entry * e; - size_t siz; - - if (type > IDMAP_MAX_TYPE) - panic("bad type"); /* XXX */ - - e = malloc(sizeof(struct idmap_entry), M_IDMAP, - M_WAITOK | M_ZERO); - - e->id_info.id_type = type; - e->id_info.id_namelen = 0; /* should already */ - e->id_info.id_id = id; - - siz = sizeof(struct idmap_msg); - error = nfs4dev_call(NFS4DEV_TYPE_IDMAP, (caddr_t)&e->id_info, siz, - (caddr_t)&e->id_info, &siz); - - if (error) { - IDMAP_DEBUG("error %d in nfs4dev_upcall()\n", error); - *found = NULL; - return error; - } - - if (siz != sizeof(struct idmap_msg)) { - IDMAP_DEBUG("bad size of returned message\n"); - *found = NULL; - return EFAULT; - } - - *found = e; - return 0; -} - -static void -idmap_hashf(struct idmap_entry *e, uint32_t * hval_id, uint32_t * hval_name) -{ - switch (e->id_info.id_type) { - case IDMAP_TYPE_UID: - *hval_id = e->id_info.id_id.uid % IDMAP_HASH_SIZE; - break; - case IDMAP_TYPE_GID: - *hval_id = e->id_info.id_id.gid % IDMAP_HASH_SIZE; - break; - default: - /* XXX yikes! */ - panic("hashf: bad type!"); - break; - } - - if (e->id_info.id_namelen == 0) - /* XXX */ panic("hashf: bad name"); - - *hval_name = fnv_32_str(e->id_info.id_name, FNV1_32_INIT) % IDMAP_HASH_SIZE; -} - -static int -idmap_add(struct idmap_entry * e) -{ - struct idmap_hash * hash; - uint32_t hval_id, hval_name; - - if (e->id_info.id_namelen == 0) { - printf("idmap_add: name of len 0\n"); - return EINVAL; - } - - switch (e->id_info.id_type) { - case IDMAP_TYPE_UID: - hash = &idmap_uid_hash; - break; - case IDMAP_TYPE_GID: - hash = &idmap_gid_hash; - break; - default: - /* XXX yikes */ - panic("idmap add: bad type!"); - break; - } - - idmap_hashf(e, &hval_id, &hval_name); - - IDMAP_WLOCK(&hash->hash_lock); - - TAILQ_INSERT_TAIL(&hash->hash_id[hval_id], e, id_entry_id); - TAILQ_INSERT_TAIL(&hash->hash_name[hval_name], e, id_entry_name); - - IDMAP_UNLOCK(&hash->hash_lock); - - return 0; -} - -static struct idmap_entry * -idmap_id_lookup(uint32_t type, ident_t id) -{ - struct idmap_hash * hash; - uint32_t hval; - struct idmap_entry * e; - - switch (type) { - case IDMAP_TYPE_UID: - hash = &idmap_uid_hash; - hval = id.uid % IDMAP_HASH_SIZE; - break; - case IDMAP_TYPE_GID: - hash = &idmap_gid_hash; - hval = id.gid % IDMAP_HASH_SIZE; - break; - default: - /* XXX yikes */ - panic("lookup: bad type!"); - break; - } - - - IDMAP_RLOCK(&hash->hash_lock); - - TAILQ_FOREACH(e, &hash->hash_id[hval], id_entry_name) { - if ((type == IDMAP_TYPE_UID && e->id_info.id_id.uid == id.uid)|| - (type == IDMAP_TYPE_GID && e->id_info.id_id.gid == id.gid)) { - IDMAP_UNLOCK(&hash->hash_lock); - return e; - } - } - - IDMAP_UNLOCK(&hash->hash_lock); - return NULL; -} - -static struct idmap_entry * -idmap_name_lookup(uint32_t type, char * name) -{ - struct idmap_hash * hash; - uint32_t hval; - struct idmap_entry * e; - size_t len; - - switch (type) { - case IDMAP_TYPE_UID: - hash = &idmap_uid_hash; - break; - case IDMAP_TYPE_GID: - hash = &idmap_gid_hash; - break; - default: - /* XXX yikes */ - panic("lookup: bad type!"); - break; - } - - len = strlen(name); - - if (len == 0 || len > IDMAP_MAXNAMELEN) { - IDMAP_DEBUG("bad name length %d\n", len); - return NULL; - } - - hval = fnv_32_str(name, FNV1_32_INIT) % IDMAP_HASH_SIZE; - - IDMAP_RLOCK(&hash->hash_lock); - - TAILQ_FOREACH(e, &hash->hash_name[hval], id_entry_name) { - if ((strlen(e->id_info.id_name) == strlen(name)) && strncmp(e->id_info.id_name, name, strlen(name)) == 0) { - IDMAP_UNLOCK(&hash->hash_lock); - return e; - } - } - - IDMAP_UNLOCK(&hash->hash_lock); - return NULL; -} - -void -idmap_init(void) -{ - unsigned int i; - - for (i=0; i<IDMAP_HASH_SIZE; i++) { - TAILQ_INIT(&idmap_uid_hash.hash_name[i]); - TAILQ_INIT(&idmap_uid_hash.hash_id[i]); - - TAILQ_INIT(&idmap_gid_hash.hash_name[i]); - TAILQ_INIT(&idmap_gid_hash.hash_id[i]); - } - - lockinit(&idmap_uid_hash.hash_lock, PLOCK, "idmap uid hash table", 0,0); - lockinit(&idmap_gid_hash.hash_lock, PLOCK, "idmap gid hash table", 0,0); - -} - -void idmap_uninit(void) -{ - struct idmap_entry * e; - int i; - - lockdestroy(&idmap_uid_hash.hash_lock); - lockdestroy(&idmap_gid_hash.hash_lock); - - for (i=0; i<IDMAP_HASH_SIZE; i++) { - while(!TAILQ_EMPTY(&idmap_uid_hash.hash_name[i])) { - e = TAILQ_FIRST(&idmap_uid_hash.hash_name[i]); - TAILQ_REMOVE(&idmap_uid_hash.hash_name[i], e, id_entry_name); - TAILQ_REMOVE(&idmap_uid_hash.hash_id[i], e, id_entry_id); - free(e, M_IDMAP); - } - - while(!TAILQ_EMPTY(&idmap_gid_hash.hash_name[i])) { - e = TAILQ_FIRST(&idmap_gid_hash.hash_name[i]); - TAILQ_REMOVE(&idmap_gid_hash.hash_name[i], e, id_entry_name); - TAILQ_REMOVE(&idmap_gid_hash.hash_id[i], e, id_entry_id); - free(e, M_IDMAP); - } - - } -} - -int -idmap_uid_to_name(uid_t uid, char ** name, size_t * len) -{ - struct idmap_entry * e; - int error = 0; - ident_t id; - - id.uid = uid; - - - if ((e = idmap_id_lookup(IDMAP_TYPE_UID, id)) == NULL) { - if ((error = idmap_upcall_id(IDMAP_TYPE_UID, id, &e)) != 0) { - IDMAP_DEBUG("error in upcall\n"); - return error; - } - - if (e == NULL) { - IDMAP_DEBUG("no error from upcall, but no data returned\n"); - return EFAULT; - } - - if (idmap_add(e) != 0) { - IDMAP_DEBUG("idmap_add failed\n"); - free(e, M_IDMAP); - return EFAULT; - } - } - - *name = e->id_info.id_name; - *len = e->id_info.id_namelen; - return 0; -} - -int -idmap_gid_to_name(gid_t gid, char ** name, size_t * len) -{ - struct idmap_entry * e; - int error = 0; - ident_t id; - - id.gid = gid; - - - if ((e = idmap_id_lookup(IDMAP_TYPE_GID, id)) == NULL) { - if ((error = idmap_upcall_id(IDMAP_TYPE_GID, id, &e))) { - IDMAP_DEBUG("error in upcall\n"); - return error; - } - - if (e == NULL) { - IDMAP_DEBUG("no error from upcall, but no data returned\n"); - return EFAULT; - } - - if (idmap_add(e) != 0) { - IDMAP_DEBUG("idmap_add failed\n"); - free(e, M_IDMAP); - } - } - - *name = e->id_info.id_name; - *len = e->id_info.id_namelen; - return 0; -} - -int -idmap_name_to_uid(char * name, size_t len, uid_t * id) -{ - struct idmap_entry * e; - int error = 0; - char * namestr; - - if (name == NULL ) - return EFAULT; - - if (len == 0 || len > IDMAP_MAXNAMELEN) { - IDMAP_DEBUG("idmap_name_to_uid: bad len\n"); - return EINVAL; - } - - /* XXX hack */ - namestr = malloc(len + 1, M_TEMP, M_WAITOK); - bcopy(name, namestr, len); - namestr[len] = '\0'; - - - if ((e = idmap_name_lookup(IDMAP_TYPE_UID, namestr)) == NULL) { - if ((error = idmap_upcall_name(IDMAP_TYPE_UID, namestr, &e))) { - free(namestr, M_TEMP); - return error; - } - - if (e == NULL) { - IDMAP_DEBUG("no error from upcall, but no data returned\n"); - free(namestr, M_TEMP); - return EFAULT; - } - - if (idmap_add(e) != 0) { - IDMAP_DEBUG("idmap_add failed\n"); - free(e, M_IDMAP); - } - } - - *id = e->id_info.id_id.uid; - free(namestr, M_TEMP); - return 0; -} - -int -idmap_name_to_gid(char * name, size_t len, gid_t * id) -{ - struct idmap_entry * e; - int error = 0; - - char * namestr; - - if (name == NULL ) - return EFAULT; - - if (len == 0 || len > IDMAP_MAXNAMELEN) { - IDMAP_DEBUG("idmap_name_to_uid: bad len\n"); - return EINVAL; - } - - /* XXX hack */ - namestr = malloc(len + 1, M_TEMP, M_WAITOK); - bcopy(name, namestr, len); - namestr[len] = '\0'; - - - if ((e = idmap_name_lookup(IDMAP_TYPE_GID, namestr)) == NULL) { - if ((error = idmap_upcall_name(IDMAP_TYPE_GID, namestr, &e)) != 0) { - IDMAP_DEBUG("error in upcall\n"); - free(namestr, M_TEMP); - return error; - } - - if (e == NULL) { - IDMAP_DEBUG("no error from upcall, but no data returned\n"); - free(namestr, M_TEMP); - return EFAULT; - } - - if (idmap_add(e) != 0) { - IDMAP_DEBUG("idmap_add failed\n"); - free(e, M_IDMAP); - } - } - - *id = e->id_info.id_id.gid; - free(namestr, M_TEMP); - return 0; -} |
