svn commit: r293802 - in stable/10/sys/boot: forth i386/loader userboot/userboot zfs
Allan Jude
allanjude at FreeBSD.org
Wed Jan 13 01:50:04 UTC 2016
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
/*
More information about the svn-src-all
mailing list