Date: Wed, 13 Jan 2016 01:50:02 +0000 (UTC) From: Allan Jude <allanjude@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r293802 - in stable/10/sys/boot: forth i386/loader userboot/userboot zfs Message-ID: <201601130150.u0D1o2dh054046@repo.freebsd.org>
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Author: allanjude Date: Wed Jan 13 01:50:02 2016 New Revision: 293802 URL: https://svnweb.freebsd.org/changeset/base/293802 Log: MFC: r293001 Introduce the ZFS Boot Environments menu to the loader menu MFC: r293414 Add ZFS Boot Environments menu to userboot MFC: r293454 Only call init_zfs_bootenv when the system is booted with ZFS MFC: r293612 Fix calling init_zfs_bootenv to early, resulting in empty ZFS BE menu Relnotes: yes Sponsored by: ScaleEngine Inc. Modified: stable/10/sys/boot/forth/loader.conf stable/10/sys/boot/forth/menu-commands.4th stable/10/sys/boot/forth/menu.rc stable/10/sys/boot/forth/support.4th stable/10/sys/boot/i386/loader/main.c stable/10/sys/boot/userboot/userboot/main.c stable/10/sys/boot/zfs/libzfs.h stable/10/sys/boot/zfs/zfs.c stable/10/sys/boot/zfs/zfsimpl.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/boot/forth/loader.conf ============================================================================== --- stable/10/sys/boot/forth/loader.conf Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/forth/loader.conf Wed Jan 13 01:50:02 2016 (r293802) @@ -73,6 +73,7 @@ entropy_cache_type="/boot/entropy" #password="" # Prevent changes to boot options #bootlock_password="" # Prevent booting (see check-password.4th(8)) #geom_eli_passphrase_prompt="NO" # Prompt for geli(8) passphrase to mount root +bootenv_autolist="YES" # Auto populate the list of ZFS Boot Environments #beastie_disable="NO" # Turn the beastie boot menu on and off #kernels="kernel kernel.old" # Kernels to display in the boot menu #loader_logo="orbbw" # Desired logo: orbbw, orb, fbsdbw, beastiebw, beastie, none Modified: stable/10/sys/boot/forth/menu-commands.4th ============================================================================== --- stable/10/sys/boot/forth/menu-commands.4th Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/forth/menu-commands.4th Wed Jan 13 01:50:02 2016 (r293802) @@ -351,4 +351,68 @@ also menu-namespace also menu-command-he 2 goto_menu ; +\ +\ Set boot environment defaults +\ + +: init_bootenv ( -- ) + s" set menu_caption[1]=${bemenu_current}${vfs.root.mountfrom}" evaluate + s" set ansi_caption[1]=${beansi_current}${vfs.root.mountfrom}" evaluate + s" set menu_caption[2]=${bemenu_bootfs}${zfs_be_active}" evaluate + s" set ansi_caption[2]=${beansi_bootfs}${zfs_be_active}" evaluate + s" set menu_caption[3]=${bemenu_page}${zfs_be_currpage}${bemenu_pageof}${zfs_be_pages}" evaluate + s" set ansi_caption[3]=${beansi_page}${zfs_be_currpage}${bemenu_pageof}${zfs_be_pages}" evaluate +; + +\ +\ Redraw the entire screen. A long BE name can corrupt the menu +\ + +: be_draw_screen + clear \ Clear the screen (in screen.4th) + print_version \ print version string (bottom-right; see version.4th) + draw-beastie \ Draw FreeBSD logo at right (in beastie.4th) + draw-brand \ Draw brand.4th logo at top (in brand.4th) + menu-init \ Initialize menu and draw bounding box (in menu.4th) +; + +\ +\ Select a boot environment +\ + +: set_bootenv ( N -- N TRUE ) + dup s" set vfs.root.mountfrom=${bootenv_root[E]}" 38 +c! evaluate + s" set currdev=${vfs.root.mountfrom}:" evaluate + s" unload" evaluate + free-module-options + s" /boot/defaults/loader.conf" read-conf + s" /boot/loader.conf" read-conf + s" /boot/loader.conf.local" read-conf + init_bootenv + be_draw_screen + menu-redraw + TRUE +; + +\ +\ Switch to the next page of boot environments +\ + +: set_be_page ( N -- N TRUE ) + s" zfs_be_currpage" getenv dup -1 = if + drop s" 1" + else + 0 s>d 2swap + >number ( ud caddr/u -- ud' caddr'/u' ) \ convert string to numbers + 2drop \ drop the string + 1 um/mod ( ud u1 -- u2 u3 ) \ convert double ud' to single u3' and remainder u2 + swap drop ( ud2 u3 -- u3 ) \ drop the remainder u2 + 1+ \ increment the page number + s>d <# #s #> \ convert back to a string + then + s" zfs_be_currpage" setenv + s" reloadbe" evaluate + 3 goto_menu +; + only forth definitions Modified: stable/10/sys/boot/forth/menu.rc ============================================================================== --- stable/10/sys/boot/forth/menu.rc Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/forth/menu.rc Wed Jan 13 01:50:02 2016 (r293802) @@ -68,6 +68,13 @@ set mainmenu_command[6]="2 goto_menu" set mainmenu_keycode[6]=111 set mainansi_caption[6]="Configure Boot ^[1mO^[mptions..." +s" currdev" getenv dup 0> [if] drop 4 s" zfs:" compare 0= [if] + set mainmenu_caption[7]="Select Boot [E]nvironment..." + set mainmenu_command[7]="3 goto_menu" + set mainmenu_keycode[7]=101 + set mainansi_caption[7]="Select Boot ^[1mE^[37mnvironment..." +[then] [else] drop [then] + \ \ BOOT OPTIONS MENU \ @@ -119,6 +126,37 @@ set optionsmenu_keycode[6]=118 set optionsansi_caption[6]="^[1mV^[merbose..... ^[34;1mOff^[m" set optionstoggled_ansi[6]="^[1mV^[merbose..... ^[32;7mOn^[m" +\ +\ BOOT ENVIRONMENT MENU +\ + +set menuset_name3="bootenv" + +set bemenu_current="Active: " +set beansi_current="^[1m${bemenu_current}^[m" +set bemenu_bootfs="bootfs: " +set beansi_bootfs="^[1m${bemenu_bootfs}^[m" +set bemenu_page="[P]age: " +set beansi_page="^[1mP^[mage: " +set bemenu_pageof=" of " +set beansi_pageof="${bemenu_pageof}" +set zfs_be_currpage=1 + +set bootenvmenu_init="init_bootenv" + +set bootenvmenu_command[1]="be_draw_screen 1 goto_menu" +set bootenvmenu_keycode[1]=8 + +set bootenvmenu_command[2]="set_bootenv" +set bootenvmenu_keycode[2]=97 +set bootenv_root[2]="${zfs_be_active}" + +set bootenvmenu_command[3]="set_be_page" +set bootenvmenu_keycode[3]=112 + +set bootenvmenu_options=4 +set bootenvmenu_optionstext="Boot Environments:" + \ Enable automatic booting (add ``autoboot_delay=N'' to loader.conf(5) to \ customize the timeout; default is 10-seconds) \ @@ -128,6 +166,21 @@ set menu_timeout_command="boot" \ try-include /boot/menu.rc.local +\ Initialize boot environment variables +\ +s" reloadbe" sfind ( xt|0 bool ) [if] + s" bootenv_autolist" getenv dup -1 = [if] + drop s" execute" evaluate \ Use evaluate to avoid passing + \ reloadbe an optional parameter + [else] + s" YES" compare-insensitive 0= [if] + s" execute" evaluate + [then] + [then] +[else] + drop ( xt=0 ) +[then] + \ Display the main menu (see `menu.4th') set menuset_initial=1 menuset-loadinitial Modified: stable/10/sys/boot/forth/support.4th ============================================================================== --- stable/10/sys/boot/forth/support.4th Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/forth/support.4th Wed Jan 13 01:50:02 2016 (r293802) @@ -930,6 +930,30 @@ only forth definitions also support-func repeat ; +: free-one-module { addr -- addr } + addr module.name strfree + addr module.loadname strfree + addr module.type strfree + addr module.args strfree + addr module.beforeload strfree + addr module.afterload strfree + addr module.loaderror strfree + addr +; + +: free-module-options + module_options @ + begin + ?dup + while + free-one-module + dup module.next @ + swap free-memory + repeat + 0 module_options ! + 0 last_module_option ! +; + only forth also support-functions definitions \ Variables used for processing multiple conf files Modified: stable/10/sys/boot/i386/loader/main.c ============================================================================== --- stable/10/sys/boot/i386/loader/main.c Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/i386/loader/main.c Wed Jan 13 01:50:02 2016 (r293802) @@ -69,6 +69,7 @@ static int isa_inb(int port); static void isa_outb(int port, int value); void exit(int code); #ifdef LOADER_ZFS_SUPPORT +static void init_zfs_bootenv(char *currdev); static void i386_zfs_probe(void); #endif @@ -291,12 +292,45 @@ extract_currdev(void) new_currdev.d_unit = 0; } +#ifdef LOADER_ZFS_SUPPORT + if (new_currdev.d_type == DEVT_ZFS) + init_zfs_bootenv(zfs_fmtdev(&new_currdev)); +#endif + env_setenv("currdev", EV_VOLATILE, i386_fmtdev(&new_currdev), i386_setcurrdev, env_nounset); env_setenv("loaddev", EV_VOLATILE, i386_fmtdev(&new_currdev), env_noset, env_nounset); } +#ifdef LOADER_ZFS_SUPPORT +static void +init_zfs_bootenv(char *currdev) +{ + char *beroot; + + if (strlen(currdev) == 0) + return; + if(strncmp(currdev, "zfs:", 4) != 0) + return; + /* Remove the trailing : */ + currdev[strlen(currdev) - 1] = '\0'; + setenv("zfs_be_active", currdev, 1); + setenv("zfs_be_currpage", "1", 1); + /* Do not overwrite if already set */ + setenv("vfs.root.mountfrom", currdev, 0); + /* Forward past zfs: */ + currdev = strchr(currdev, ':'); + currdev++; + /* Remove the last element (current bootenv) */ + beroot = strrchr(currdev, '/'); + if (beroot != NULL) + beroot[0] = '\0'; + beroot = currdev; + setenv("zfs_be_root", beroot, 1); +} +#endif + COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot); static int @@ -350,6 +384,40 @@ command_lszfs(int argc, char *argv[]) command_errmsg = strerror(err); return (CMD_ERROR); } + + return (CMD_OK); +} + +COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments", + command_reloadbe); + +static int +command_reloadbe(int argc, char *argv[]) +{ + int err; + char *root; + + if (argc > 2) { + command_errmsg = "wrong number of arguments"; + return (CMD_ERROR); + } + + if (argc == 2) { + err = zfs_bootenv(argv[1]); + } else { + root = getenv("zfs_be_root"); + if (root == NULL) { + /* There does not appear to be a ZFS pool here, exit without error */ + return (CMD_OK); + } + err = zfs_bootenv(getenv("zfs_be_root")); + } + + if (err != 0) { + command_errmsg = strerror(err); + return (CMD_ERROR); + } + return (CMD_OK); } #endif Modified: stable/10/sys/boot/userboot/userboot/main.c ============================================================================== --- stable/10/sys/boot/userboot/userboot/main.c Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/userboot/userboot/main.c Wed Jan 13 01:50:02 2016 (r293802) @@ -41,6 +41,7 @@ __FBSDID("$FreeBSD$"); static void userboot_zfs_probe(void); static int userboot_zfs_found; +static void init_zfs_bootenv(char *currdev); #endif #define USERBOOT_VERSION USERBOOT_VERSION_3 @@ -167,6 +168,7 @@ extract_currdev(void) zdev.d_type = zdev.d_dev->dv_type; dev = *(struct disk_devdesc *)&zdev; + init_zfs_bootenv(zfs_fmtdev(&dev)); } else #endif @@ -198,6 +200,32 @@ extract_currdev(void) #if defined(USERBOOT_ZFS_SUPPORT) static void +init_zfs_bootenv(char *currdev) +{ + char *beroot; + + if (strlen(currdev) == 0) + return; + if(strncmp(currdev, "zfs:", 4) != 0) + return; + /* Remove the trailing : */ + currdev[strlen(currdev) - 1] = '\0'; + setenv("zfs_be_active", currdev, 1); + setenv("zfs_be_currpage", "1", 1); + /* Do not overwrite if already set */ + setenv("vfs.root.mountfrom", currdev, 0); + /* Forward past zfs: */ + currdev = strchr(currdev, ':'); + currdev++; + /* Remove the last element (current bootenv) */ + beroot = strrchr(currdev, '/'); + if (beroot != NULL) + beroot[0] = '\0'; + beroot = currdev; + setenv("zfs_be_root", beroot, 1); +} + +static void userboot_zfs_probe(void) { char devname[32]; @@ -237,6 +265,38 @@ command_lszfs(int argc, char *argv[]) } return (CMD_OK); } + +COMMAND_SET(reloadbe, "reloadbe", "refresh the list of ZFS Boot Environments", + command_reloadbe); + +static int +command_reloadbe(int argc, char *argv[]) +{ + int err; + char *root; + + if (argc > 2) { + command_errmsg = "wrong number of arguments"; + return (CMD_ERROR); + } + + if (argc == 2) { + err = zfs_bootenv(argv[1]); + } else { + root = getenv("zfs_be_root"); + if (root == NULL) { + return (CMD_OK); + } + err = zfs_bootenv(root); + } + + if (err != 0) { + command_errmsg = strerror(err); + return (CMD_ERROR); + } + + return (CMD_OK); +} #endif /* USERBOOT_ZFS_SUPPORT */ COMMAND_SET(quit, "quit", "exit the loader", command_quit); Modified: stable/10/sys/boot/zfs/libzfs.h ============================================================================== --- stable/10/sys/boot/zfs/libzfs.h Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/zfs/libzfs.h Wed Jan 13 01:50:02 2016 (r293802) @@ -62,6 +62,9 @@ int zfs_parsedev(struct zfs_devdesc *dev char *zfs_fmtdev(void *vdev); int zfs_probe_dev(const char *devname, uint64_t *pool_guid); int zfs_list(const char *name); +int zfs_bootenv(const char *name); +int zfs_belist_add(const char *name); +int zfs_set_env(void); extern struct devsw zfs_dev; extern struct fs_ops zfs_fsops; Modified: stable/10/sys/boot/zfs/zfs.c ============================================================================== --- stable/10/sys/boot/zfs/zfs.c Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/zfs/zfs.c Wed Jan 13 01:50:02 2016 (r293802) @@ -48,6 +48,10 @@ __FBSDID("$FreeBSD$"); #include "zfsimpl.c" +/* Define the range of indexes to be populated with ZFS Boot Environments */ +#define ZFS_BE_FIRST 4 +#define ZFS_BE_LAST 8 + static int zfs_open(const char *path, struct open_file *f); static int zfs_write(struct open_file *f, void *buf, size_t size, size_t *resid); static int zfs_close(struct open_file *f); @@ -80,6 +84,16 @@ struct file { zap_leaf_phys_t *f_zap_leaf; /* zap leaf buffer */ }; +static int zfs_env_index; +static int zfs_env_count; + +SLIST_HEAD(zfs_be_list, zfs_be_entry) zfs_be_head = SLIST_HEAD_INITIALIZER(zfs_be_head); +struct zfs_be_list *zfs_be_headp; +struct zfs_be_entry { + const char *name; + SLIST_ENTRY(zfs_be_entry) entries; +} *zfs_be, *zfs_be_tmp; + /* * Open a file. */ @@ -691,6 +705,161 @@ zfs_list(const char *name) rv = zfs_lookup_dataset(spa, dsname, &objid); if (rv != 0) return (rv); - rv = zfs_list_dataset(spa, objid); + + return (zfs_list_dataset(spa, objid)); +} + +int +zfs_bootenv(const char *name) +{ + static char poolname[ZFS_MAXNAMELEN], *dsname, *root; + char becount[4]; + uint64_t objid; + spa_t *spa; + int len, rv, pages, perpage, currpage; + + if (name == NULL) + return (EINVAL); + if ((root = getenv("zfs_be_root")) == NULL) + return (EINVAL); + + if (strcmp(name, root) != 0) { + if (setenv("zfs_be_root", name, 1) != 0) + return (ENOMEM); + } + + SLIST_INIT(&zfs_be_head); + zfs_env_count = 0; + len = strlen(name); + dsname = strchr(name, '/'); + if (dsname != NULL) { + len = dsname - name; + dsname++; + } else + dsname = ""; + memcpy(poolname, name, len); + poolname[len] = '\0'; + + spa = spa_find_by_name(poolname); + if (!spa) + return (ENXIO); + rv = zfs_lookup_dataset(spa, dsname, &objid); + if (rv != 0) + return (rv); + rv = zfs_callback_dataset(spa, objid, zfs_belist_add); + + /* Calculate and store the number of pages of BEs */ + perpage = (ZFS_BE_LAST - ZFS_BE_FIRST + 1); + pages = (zfs_env_count / perpage) + ((zfs_env_count % perpage) > 0 ? 1 : 0); + snprintf(becount, 4, "%d", pages); + if (setenv("zfs_be_pages", becount, 1) != 0) + return (ENOMEM); + + /* Roll over the page counter if it has exceeded the maximum */ + currpage = strtol(getenv("zfs_be_currpage"), NULL, 10); + if (currpage > pages) { + if (setenv("zfs_be_currpage", "1", 1) != 0) + return (ENOMEM); + } + + /* Populate the menu environment variables */ + zfs_set_env(); + + /* Clean up the SLIST of ZFS BEs */ + while (!SLIST_EMPTY(&zfs_be_head)) { + zfs_be = SLIST_FIRST(&zfs_be_head); + SLIST_REMOVE_HEAD(&zfs_be_head, entries); + free(zfs_be); + } + return (rv); } + +int +zfs_belist_add(const char *name) +{ + + /* Add the boot environment to the head of the SLIST */ + zfs_be = malloc(sizeof(struct zfs_be_entry)); + zfs_be->name = name; + SLIST_INSERT_HEAD(&zfs_be_head, zfs_be, entries); + zfs_env_count++; + + return (0); +} + +int +zfs_set_env(void) +{ + char envname[32], envval[256]; + char *beroot, *pagenum; + int rv, page, ctr; + + beroot = getenv("zfs_be_root"); + if (beroot == NULL) { + return (1); + } + + pagenum = getenv("zfs_be_currpage"); + if (pagenum != NULL) { + page = strtol(pagenum, NULL, 10); + } else { + page = 1; + } + + ctr = 1; + rv = 0; + zfs_env_index = ZFS_BE_FIRST; + SLIST_FOREACH_SAFE(zfs_be, &zfs_be_head, entries, zfs_be_tmp) { + /* Skip to the requested page number */ + if (ctr <= ((ZFS_BE_LAST - ZFS_BE_FIRST + 1) * (page - 1))) { + ctr++; + continue; + } + + snprintf(envname, sizeof(envname), "bootenvmenu_caption[%d]", zfs_env_index); + snprintf(envval, sizeof(envval), "%s", zfs_be->name); + rv = setenv(envname, envval, 1); + if (rv != 0) { + break; + } + + snprintf(envname, sizeof(envname), "bootenvansi_caption[%d]", zfs_env_index); + rv = setenv(envname, envval, 1); + if (rv != 0){ + break; + } + + snprintf(envname, sizeof(envname), "bootenvmenu_command[%d]", zfs_env_index); + rv = setenv(envname, "set_bootenv", 1); + if (rv != 0){ + break; + } + + snprintf(envname, sizeof(envname), "bootenv_root[%d]", zfs_env_index); + snprintf(envval, sizeof(envval), "zfs:%s/%s", beroot, zfs_be->name); + rv = setenv(envname, envval, 1); + if (rv != 0){ + break; + } + + zfs_env_index++; + if (zfs_env_index > ZFS_BE_LAST) { + break; + } + + } + + for (; zfs_env_index <= ZFS_BE_LAST; zfs_env_index++) { + snprintf(envname, sizeof(envname), "bootenvmenu_caption[%d]", zfs_env_index); + (void)unsetenv(envname); + snprintf(envname, sizeof(envname), "bootenvansi_caption[%d]", zfs_env_index); + (void)unsetenv(envname); + snprintf(envname, sizeof(envname), "bootenvmenu_command[%d]", zfs_env_index); + (void)unsetenv(envname); + snprintf(envname, sizeof(envname), "bootenv_root[%d]", zfs_env_index); + (void)unsetenv(envname); + } + + return (rv); +} \ No newline at end of file Modified: stable/10/sys/boot/zfs/zfsimpl.c ============================================================================== --- stable/10/sys/boot/zfs/zfsimpl.c Wed Jan 13 01:49:35 2016 (r293801) +++ stable/10/sys/boot/zfs/zfsimpl.c Wed Jan 13 01:50:02 2016 (r293802) @@ -1473,7 +1473,7 @@ zap_lookup(const spa_t *spa, const dnode * the directory contents. */ static int -mzap_list(const dnode_phys_t *dnode) +mzap_list(const dnode_phys_t *dnode, int (*callback)(const char *)) { const mzap_phys_t *mz; const mzap_ent_phys_t *mze; @@ -1492,7 +1492,7 @@ mzap_list(const dnode_phys_t *dnode) mze = &mz->mz_chunk[i]; if (mze->mze_name[0]) //printf("%-32s 0x%jx\n", mze->mze_name, (uintmax_t)mze->mze_value); - printf("%s\n", mze->mze_name); + callback(mze->mze_name); } return (0); @@ -1503,7 +1503,7 @@ mzap_list(const dnode_phys_t *dnode) * the directory header. */ static int -fzap_list(const spa_t *spa, const dnode_phys_t *dnode) +fzap_list(const spa_t *spa, const dnode_phys_t *dnode, int (*callback)(const char *)) { int bsize = dnode->dn_datablkszsec << SPA_MINBLOCKSHIFT; zap_phys_t zh = *(zap_phys_t *) zap_scratch; @@ -1566,13 +1566,21 @@ fzap_list(const spa_t *spa, const dnode_ value = fzap_leaf_value(&zl, zc); //printf("%s 0x%jx\n", name, (uintmax_t)value); - printf("%s\n", name); + callback((const char *)name); } } return (0); } +static int zfs_printf(const char *name) +{ + + printf("%s\n", name); + + return (0); +} + /* * List a zap directory. */ @@ -1587,9 +1595,9 @@ zap_list(const spa_t *spa, const dnode_p zap_type = *(uint64_t *) zap_scratch; if (zap_type == ZBT_MICRO) - return mzap_list(dnode); + return mzap_list(dnode, zfs_printf); else - return fzap_list(spa, dnode); + return fzap_list(spa, dnode, zfs_printf); } static int @@ -1858,6 +1866,48 @@ zfs_list_dataset(const spa_t *spa, uint6 return (zap_list(spa, &child_dir_zap) != 0); } + +int +zfs_callback_dataset(const spa_t *spa, uint64_t objnum, int (*callback)(const char *name)) +{ + uint64_t dir_obj, child_dir_zapobj, zap_type; + dnode_phys_t child_dir_zap, dir, dataset; + dsl_dataset_phys_t *ds; + dsl_dir_phys_t *dd; + int err; + + err = objset_get_dnode(spa, &spa->spa_mos, objnum, &dataset); + if (err != 0) { + printf("ZFS: can't find dataset %ju\n", (uintmax_t)objnum); + return (err); + } + ds = (dsl_dataset_phys_t *) &dataset.dn_bonus; + dir_obj = ds->ds_dir_obj; + + err = objset_get_dnode(spa, &spa->spa_mos, dir_obj, &dir); + if (err != 0) { + printf("ZFS: can't find dirobj %ju\n", (uintmax_t)dir_obj); + return (err); + } + dd = (dsl_dir_phys_t *)&dir.dn_bonus; + + child_dir_zapobj = dd->dd_child_dir_zapobj; + err = objset_get_dnode(spa, &spa->spa_mos, child_dir_zapobj, &child_dir_zap); + if (err != 0) { + printf("ZFS: can't find child zap %ju\n", (uintmax_t)dir_obj); + return (err); + } + + err = dnode_read(spa, &child_dir_zap, 0, zap_scratch, child_dir_zap.dn_datablkszsec * 512); + if (err != 0) + return (err); + + zap_type = *(uint64_t *) zap_scratch; + if (zap_type == ZBT_MICRO) + return mzap_list(&child_dir_zap, callback); + else + return fzap_list(spa, &child_dir_zap, callback); +} #endif /*
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