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libzfs: add v2 iterator interfaces

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f6a0dac84 modified the zfs_iter_* functions to take a new "flags"
parameter, and introduced a variety of flags to ask the kernel to limit
the results in various ways, reducing the amount of work the caller
needed to do to filter out things they didn't need.

Unfortunately this change broke the ABI for existing clients (read:
older versions of the `zfs` program), and was reverted 399b98198.

dc95911d2 reintroduced the original patch, with the understanding that a
backwards-compatible fix would be made before the 2.2 release branch was
tagged. This commit is that fix.

This introduces zfs_iter_*_v2 functions that have the new flags
argument, and reverts the existing functions to not have the flags
parameter, as they were before. The old functions are now reimplemented
in terms of the new, with flags set to 0.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <george.wilson@delphix.com>
Original-patch-by: George Wilson <george.wilson@delphix.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Closes #14597
This commit is contained in:
Rob N 2023-04-11 04:53:02 +10:00 committed by GitHub
parent ff73574cd8
commit baca06c258
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 208 additions and 89 deletions
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6
cmd/zfs/zfs_iter.c
View File

@ -143,19 +143,19 @@ zfs_callback(zfs_handle_t *zhp, void *data)
(cb->cb_types &
(ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME))) &&
zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
(void) zfs_iter_filesystems(zhp, cb->cb_flags,
(void) zfs_iter_filesystems_v2(zhp, cb->cb_flags,
zfs_callback, data);
}
if (((zfs_get_type(zhp) & (ZFS_TYPE_SNAPSHOT |
ZFS_TYPE_BOOKMARK)) == 0) && include_snaps) {
(void) zfs_iter_snapshots(zhp, cb->cb_flags,
(void) zfs_iter_snapshots_v2(zhp, cb->cb_flags,
zfs_callback, data, 0, 0);
}
if (((zfs_get_type(zhp) & (ZFS_TYPE_SNAPSHOT |
ZFS_TYPE_BOOKMARK)) == 0) && include_bmarks) {
(void) zfs_iter_bookmarks(zhp, cb->cb_flags,
(void) zfs_iter_bookmarks_v2(zhp, cb->cb_flags,
zfs_callback, data);
}

30
cmd/zfs/zfs_main.c
View File

@ -1532,7 +1532,8 @@ destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
int err;
assert(cb->cb_firstsnap == NULL);
assert(cb->cb_prevsnap == NULL);
err = zfs_iter_snapshots_sorted(fs_zhp, 0, destroy_print_cb, cb, 0, 0);
err = zfs_iter_snapshots_sorted_v2(fs_zhp, 0, destroy_print_cb, cb, 0,
0);
if (cb->cb_firstsnap != NULL) {
uint64_t used = 0;
if (err == 0) {
@ -1558,7 +1559,7 @@ snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
if (!cb->cb_doclones && !cb->cb_defer_destroy) {
cb->cb_target = zhp;
cb->cb_first = B_TRUE;
err = zfs_iter_dependents(zhp, 0, B_TRUE,
err = zfs_iter_dependents_v2(zhp, 0, B_TRUE,
destroy_check_dependent, cb);
}
@ -1576,7 +1577,7 @@ gather_snapshots(zfs_handle_t *zhp, void *arg)
destroy_cbdata_t *cb = arg;
int err = 0;
err = zfs_iter_snapspec(zhp, 0, cb->cb_snapspec,
err = zfs_iter_snapspec_v2(zhp, 0, cb->cb_snapspec,
snapshot_to_nvl_cb, cb);
if (err == ENOENT)
err = 0;
@ -1590,7 +1591,7 @@ gather_snapshots(zfs_handle_t *zhp, void *arg)
}
if (cb->cb_recurse)
err = zfs_iter_filesystems(zhp, 0, gather_snapshots, cb);
err = zfs_iter_filesystems_v2(zhp, 0, gather_snapshots, cb);
out:
zfs_close(zhp);
@ -1615,7 +1616,7 @@ destroy_clones(destroy_cbdata_t *cb)
* false while destroying the clones.
*/
cb->cb_defer_destroy = B_FALSE;
err = zfs_iter_dependents(zhp, 0, B_FALSE,
err = zfs_iter_dependents_v2(zhp, 0, B_FALSE,
destroy_callback, cb);
cb->cb_defer_destroy = defer;
zfs_close(zhp);
@ -1825,9 +1826,8 @@ zfs_do_destroy(int argc, char **argv)
* Check for any dependents and/or clones.
*/
cb.cb_first = B_TRUE;
if (!cb.cb_doclones &&
zfs_iter_dependents(zhp, 0, B_TRUE, destroy_check_dependent,
&cb) != 0) {
if (!cb.cb_doclones && zfs_iter_dependents_v2(zhp, 0, B_TRUE,
destroy_check_dependent, &cb) != 0) {
rv = 1;
goto out;
}
@ -1837,7 +1837,7 @@ zfs_do_destroy(int argc, char **argv)
goto out;
}
cb.cb_batchedsnaps = fnvlist_alloc();
if (zfs_iter_dependents(zhp, 0, B_FALSE, destroy_callback,
if (zfs_iter_dependents_v2(zhp, 0, B_FALSE, destroy_callback,
&cb) != 0) {
rv = 1;
goto out;
@ -4065,7 +4065,7 @@ rollback_check(zfs_handle_t *zhp, void *data)
}
if (cbp->cb_recurse) {
if (zfs_iter_dependents(zhp, 0, B_TRUE,
if (zfs_iter_dependents_v2(zhp, 0, B_TRUE,
rollback_check_dependent, cbp) != 0) {
zfs_close(zhp);
return (-1);
@ -4164,10 +4164,10 @@ zfs_do_rollback(int argc, char **argv)
if (cb.cb_create > 0)
min_txg = cb.cb_create;
if ((ret = zfs_iter_snapshots(zhp, 0, rollback_check, &cb,
if ((ret = zfs_iter_snapshots_v2(zhp, 0, rollback_check, &cb,
min_txg, 0)) != 0)
goto out;
if ((ret = zfs_iter_bookmarks(zhp, 0, rollback_check, &cb)) != 0)
if ((ret = zfs_iter_bookmarks_v2(zhp, 0, rollback_check, &cb)) != 0)
goto out;
if ((ret = cb.cb_error) != 0)
@ -4309,7 +4309,7 @@ zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
free(name);
if (sd->sd_recursive)
rv = zfs_iter_filesystems(zhp, 0, zfs_snapshot_cb, sd);
rv = zfs_iter_filesystems_v2(zhp, 0, zfs_snapshot_cb, sd);
zfs_close(zhp);
return (rv);
}
@ -6373,7 +6373,7 @@ zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
if (un && opts.recursive) {
struct deleg_perms data = { un, update_perm_nvl };
if (zfs_iter_filesystems(zhp, 0, set_deleg_perms,
if (zfs_iter_filesystems_v2(zhp, 0, set_deleg_perms,
&data) != 0)
goto cleanup0;
}
@ -6751,7 +6751,7 @@ get_one_dataset(zfs_handle_t *zhp, void *data)
/*
* Iterate over any nested datasets.
*/
if (zfs_iter_filesystems(zhp, 0, get_one_dataset, data) != 0) {
if (zfs_iter_filesystems_v2(zhp, 0, get_one_dataset, data) != 0) {
zfs_close(zhp);
return (1);
}

2
cmd/zpool/zpool_main.c
View File

@ -8855,7 +8855,7 @@ check_unsupp_fs(zfs_handle_t *zhp, void *unsupp_fs)
(*count)++;
}
zfs_iter_filesystems(zhp, 0, check_unsupp_fs, unsupp_fs);
zfs_iter_filesystems_v2(zhp, 0, check_unsupp_fs, unsupp_fs);
zfs_close(zhp);

4
contrib/pam_zfs_key/pam_zfs_key.c
View File

@ -535,8 +535,8 @@ zfs_key_config_get_dataset(zfs_key_config_t *config)
return (NULL);
}
(void) zfs_iter_filesystems(zhp, 0, find_dsname_by_prop_value,
config);
(void) zfs_iter_filesystems_v2(zhp, 0,
find_dsname_by_prop_value, config);
zfs_close(zhp);
char *dsname = config->dsname;
config->dsname = NULL;

26
include/libzfs.h
View File

@ -656,17 +656,29 @@ _LIBZFS_H void zprop_print_one_property(const char *, zprop_get_cbdata_t *,
typedef int (*zfs_iter_f)(zfs_handle_t *, void *);
_LIBZFS_H int zfs_iter_root(libzfs_handle_t *, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_children(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_dependents(zfs_handle_t *, int, boolean_t, zfs_iter_f,
_LIBZFS_H int zfs_iter_children(zfs_handle_t *, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_dependents(zfs_handle_t *, boolean_t, zfs_iter_f,
void *);
_LIBZFS_H int zfs_iter_filesystems(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_snapshots(zfs_handle_t *, int, zfs_iter_f, void *,
_LIBZFS_H int zfs_iter_filesystems(zfs_handle_t *, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_snapshots(zfs_handle_t *, boolean_t, zfs_iter_f, void *,
uint64_t, uint64_t);
_LIBZFS_H int zfs_iter_snapshots_sorted(zfs_handle_t *, int, zfs_iter_f, void *,
_LIBZFS_H int zfs_iter_snapshots_sorted(zfs_handle_t *, zfs_iter_f, void *,
uint64_t, uint64_t);
_LIBZFS_H int zfs_iter_snapspec(zfs_handle_t *, int, const char *, zfs_iter_f,
_LIBZFS_H int zfs_iter_snapspec(zfs_handle_t *, const char *, zfs_iter_f,
void *);
_LIBZFS_H int zfs_iter_bookmarks(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_bookmarks(zfs_handle_t *, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_children_v2(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_dependents_v2(zfs_handle_t *, int, boolean_t, zfs_iter_f,
void *);
_LIBZFS_H int zfs_iter_filesystems_v2(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_snapshots_v2(zfs_handle_t *, int, zfs_iter_f, void *,
uint64_t, uint64_t);
_LIBZFS_H int zfs_iter_snapshots_sorted_v2(zfs_handle_t *, int, zfs_iter_f,
void *, uint64_t, uint64_t);
_LIBZFS_H int zfs_iter_snapspec_v2(zfs_handle_t *, int, const char *,
zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_bookmarks_v2(zfs_handle_t *, int, zfs_iter_f, void *);
_LIBZFS_H int zfs_iter_mounted(zfs_handle_t *, zfs_iter_f, void *);
typedef struct get_all_cb {

102
lib/libzfs/libzfs.abi
View File

@ -339,14 +339,21 @@
<elf-symbol name='zfs_is_shared' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_isnumber' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_bookmarks' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_bookmarks_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_children' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_children_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_dependents' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_dependents_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_filesystems' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_filesystems_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_mounted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_root' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapshots' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapshots_sorted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapshots_sorted_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapshots_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapspec' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_iter_snapspec_v2' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_mod_supported' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_mount' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_mount_at' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@ -2261,18 +2268,31 @@
<return type-id='9c313c2d'/>
</function-decl>
<function-decl name='zfs_iter_children' mangled-name='zfs_iter_children' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_children'>
<parameter type-id='9200a744'/>
<parameter type-id='95e97e5e'/>
<parameter type-id='d8e49ab9'/>
<parameter type-id='eaa32e2f'/>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_children_v2' mangled-name='zfs_iter_children_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_children_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_dependents' mangled-name='zfs_iter_dependents' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_dependents'>
<parameter type-id='9200a744'/>
<parameter type-id='95e97e5e'/>
<parameter type-id='c19b74c3'/>
<parameter type-id='d8e49ab9'/>
<parameter type-id='eaa32e2f'/>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='c19b74c3' name='allowrecursion'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_dependents_v2' mangled-name='zfs_iter_dependents_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_dependents_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='c19b74c3' name='allowrecursion'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_mounted' mangled-name='zfs_iter_mounted' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_mounted'>
@ -3305,10 +3325,16 @@
<return type-id='80f4b756'/>
</function-decl>
<function-decl name='zfs_iter_filesystems' mangled-name='zfs_iter_filesystems' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_filesystems'>
<parameter type-id='9200a744'/>
<parameter type-id='95e97e5e'/>
<parameter type-id='d8e49ab9'/>
<parameter type-id='eaa32e2f'/>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_filesystems_v2' mangled-name='zfs_iter_filesystems_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_filesystems_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_parent_name' mangled-name='zfs_parent_name' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_parent_name'>
@ -3882,19 +3908,34 @@
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_snapshots' mangled-name='zfs_iter_snapshots' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapshots'>
<parameter type-id='9200a744'/>
<parameter type-id='95e97e5e'/>
<parameter type-id='d8e49ab9'/>
<parameter type-id='eaa32e2f'/>
<parameter type-id='9c313c2d'/>
<parameter type-id='9c313c2d'/>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='c19b74c3' name='simple'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<parameter type-id='9c313c2d' name='min_txg'/>
<parameter type-id='9c313c2d' name='max_txg'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_snapshots_v2' mangled-name='zfs_iter_snapshots_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapshots_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<parameter type-id='9c313c2d' name='min_txg'/>
<parameter type-id='9c313c2d' name='max_txg'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_bookmarks' mangled-name='zfs_iter_bookmarks' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_bookmarks'>
<parameter type-id='9200a744'/>
<parameter type-id='95e97e5e'/>
<parameter type-id='d8e49ab9'/>
<parameter type-id='eaa32e2f'/>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_bookmarks_v2' mangled-name='zfs_iter_bookmarks_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_bookmarks_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='data'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_destroy_snaps_nvl_os' mangled-name='zfs_destroy_snaps_nvl_os' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_destroy_snaps_nvl_os'>
@ -5091,6 +5132,14 @@
<return type-id='9200a744'/>
</function-decl>
<function-decl name='zfs_iter_snapshots_sorted' mangled-name='zfs_iter_snapshots_sorted' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapshots_sorted'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='d8e49ab9' name='callback'/>
<parameter type-id='eaa32e2f' name='data'/>
<parameter type-id='9c313c2d' name='min_txg'/>
<parameter type-id='9c313c2d' name='max_txg'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_snapshots_sorted_v2' mangled-name='zfs_iter_snapshots_sorted_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapshots_sorted_v2'>
<parameter type-id='9200a744' name='zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='d8e49ab9' name='callback'/>
@ -5100,6 +5149,13 @@
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_snapspec' mangled-name='zfs_iter_snapspec' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapspec'>
<parameter type-id='9200a744' name='fs_zhp'/>
<parameter type-id='80f4b756' name='spec_orig'/>
<parameter type-id='d8e49ab9' name='func'/>
<parameter type-id='eaa32e2f' name='arg'/>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='zfs_iter_snapspec_v2' mangled-name='zfs_iter_snapspec_v2' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_iter_snapspec_v2'>
<parameter type-id='9200a744' name='fs_zhp'/>
<parameter type-id='95e97e5e' name='flags'/>
<parameter type-id='80f4b756' name='spec_orig'/>

7
lib/libzfs/libzfs_changelist.c
View File

@ -552,7 +552,7 @@ change_one(zfs_handle_t *zhp, void *data)
}
if (!clp->cl_alldependents)
ret = zfs_iter_children(zhp, 0, change_one, data);
ret = zfs_iter_children_v2(zhp, 0, change_one, data);
/*
* If we added the handle to the changelist, we will re-use it
@ -721,11 +721,12 @@ changelist_gather(zfs_handle_t *zhp, zfs_prop_t prop, int gather_flags,
return (NULL);
}
} else if (clp->cl_alldependents) {
if (zfs_iter_dependents(zhp, 0, B_TRUE, change_one, clp) != 0) {
if (zfs_iter_dependents_v2(zhp, 0, B_TRUE, change_one,
clp) != 0) {
changelist_free(clp);
return (NULL);
}
} else if (zfs_iter_children(zhp, 0, change_one, clp) != 0) {
} else if (zfs_iter_children_v2(zhp, 0, change_one, clp) != 0) {
changelist_free(clp);
return (NULL);
}

2
lib/libzfs/libzfs_crypto.c
View File

@ -1226,7 +1226,7 @@ load_keys_cb(zfs_handle_t *zhp, void *arg)
cb->cb_numfailed++;
out:
(void) zfs_iter_filesystems(zhp, 0, load_keys_cb, cb);
(void) zfs_iter_filesystems_v2(zhp, 0, load_keys_cb, cb);
zfs_close(zhp);
/* always return 0, since this function is best effort */

18
lib/libzfs/libzfs_dataset.c
View File

@ -757,7 +757,7 @@ zfs_open(libzfs_handle_t *hdl, const char *path, int types)
* Iterate bookmarks to find the right one.
*/
errno = 0;
if ((zfs_iter_bookmarks(pzhp, 0, zfs_open_bookmarks_cb,
if ((zfs_iter_bookmarks_v2(pzhp, 0, zfs_open_bookmarks_cb,
&cb_data) == 0) && (cb_data.zhp == NULL)) {
(void) zfs_error(hdl, EZFS_NOENT, errbuf);
zfs_close(pzhp);
@ -2476,7 +2476,7 @@ get_clones_cb(zfs_handle_t *zhp, void *arg)
}
out:
(void) zfs_iter_children(zhp, 0, get_clones_cb, gca);
(void) zfs_iter_children_v2(zhp, 0, get_clones_cb, gca);
zfs_close(zhp);
return (0);
}
@ -3925,7 +3925,7 @@ zfs_check_snap_cb(zfs_handle_t *zhp, void *arg)
if (lzc_exists(name))
fnvlist_add_boolean(dd->nvl, name);
rv = zfs_iter_filesystems(zhp, 0, zfs_check_snap_cb, dd);
rv = zfs_iter_filesystems_v2(zhp, 0, zfs_check_snap_cb, dd);
zfs_close(zhp);
return (rv);
}
@ -4163,7 +4163,7 @@ zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
fnvlist_add_boolean(sd->sd_nvl, name);
rv = zfs_iter_filesystems(zhp, 0, zfs_snapshot_cb, sd);
rv = zfs_iter_filesystems_v2(zhp, 0, zfs_snapshot_cb, sd);
}
zfs_close(zhp);
@ -4340,7 +4340,7 @@ rollback_destroy(zfs_handle_t *zhp, void *data)
rollback_data_t *cbp = data;
if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
cbp->cb_error |= zfs_iter_dependents(zhp, 0, B_FALSE,
cbp->cb_error |= zfs_iter_dependents_v2(zhp, 0, B_FALSE,
rollback_destroy_dependent, cbp);
cbp->cb_error |= zfs_destroy(zhp, B_FALSE);
@ -4380,10 +4380,10 @@ zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force)
if (cb.cb_create > 0)
min_txg = cb.cb_create;
(void) zfs_iter_snapshots(zhp, 0, rollback_destroy, &cb,
(void) zfs_iter_snapshots_v2(zhp, 0, rollback_destroy, &cb,
min_txg, 0);
(void) zfs_iter_bookmarks(zhp, 0, rollback_destroy, &cb);
(void) zfs_iter_bookmarks_v2(zhp, 0, rollback_destroy, &cb);
if (cb.cb_error)
return (-1);
@ -4964,7 +4964,7 @@ zfs_hold_one(zfs_handle_t *zhp, void *arg)
fnvlist_add_string(ha->nvl, name, ha->tag);
if (ha->recursive)
rv = zfs_iter_filesystems(zhp, 0, zfs_hold_one, ha);
rv = zfs_iter_filesystems_v2(zhp, 0, zfs_hold_one, ha);
zfs_close(zhp);
return (rv);
}
@ -5095,7 +5095,7 @@ zfs_release_one(zfs_handle_t *zhp, void *arg)
}
if (ha->recursive)
rv = zfs_iter_filesystems(zhp, 0, zfs_release_one, ha);
rv = zfs_iter_filesystems_v2(zhp, 0, zfs_release_one, ha);
zfs_close(zhp);
return (rv);
}

75
lib/libzfs/libzfs_iter.c
View File

@ -103,7 +103,14 @@ zfs_do_list_ioctl(zfs_handle_t *zhp, int arg, zfs_cmd_t *zc)
* Iterate over all child filesystems
*/
int
zfs_iter_filesystems(zfs_handle_t *zhp, int flags, zfs_iter_f func, void *data)
zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data)
{
return (zfs_iter_filesystems_v2(zhp, 0, func, data));
}
int
zfs_iter_filesystems_v2(zfs_handle_t *zhp, int flags, zfs_iter_f func,
void *data)
{
zfs_cmd_t zc = {"\0"};
zfs_handle_t *nzhp;
@ -143,7 +150,15 @@ zfs_iter_filesystems(zfs_handle_t *zhp, int flags, zfs_iter_f func, void *data)
* Iterate over all snapshots
*/
int
zfs_iter_snapshots(zfs_handle_t *zhp, int flags, zfs_iter_f func,
zfs_iter_snapshots(zfs_handle_t *zhp, boolean_t simple, zfs_iter_f func,
void *data, uint64_t min_txg, uint64_t max_txg)
{
return (zfs_iter_snapshots_v2(zhp, simple ? ZFS_ITER_SIMPLE : 0, func,
data, min_txg, max_txg));
}
int
zfs_iter_snapshots_v2(zfs_handle_t *zhp, int flags, zfs_iter_f func,
void *data, uint64_t min_txg, uint64_t max_txg)
{
zfs_cmd_t zc = {"\0"};
@ -197,7 +212,13 @@ zfs_iter_snapshots(zfs_handle_t *zhp, int flags, zfs_iter_f func,
* Iterate over all bookmarks
*/
int
zfs_iter_bookmarks(zfs_handle_t *zhp, int flags __maybe_unused,
zfs_iter_bookmarks(zfs_handle_t *zhp, zfs_iter_f func, void *data)
{
return (zfs_iter_bookmarks_v2(zhp, 0, func, data));
}
int
zfs_iter_bookmarks_v2(zfs_handle_t *zhp, int flags __maybe_unused,
zfs_iter_f func, void *data)
{
zfs_handle_t *nzhp;
@ -305,7 +326,15 @@ zfs_snapshot_compare(const void *larg, const void *rarg)
}
int
zfs_iter_snapshots_sorted(zfs_handle_t *zhp, int flags, zfs_iter_f callback,
zfs_iter_snapshots_sorted(zfs_handle_t *zhp, zfs_iter_f callback,
void *data, uint64_t min_txg, uint64_t max_txg)
{
return (zfs_iter_snapshots_sorted_v2(zhp, 0, callback, data,
min_txg, max_txg));
}
int
zfs_iter_snapshots_sorted_v2(zfs_handle_t *zhp, int flags, zfs_iter_f callback,
void *data, uint64_t min_txg, uint64_t max_txg)
{
int ret = 0;
@ -316,7 +345,7 @@ zfs_iter_snapshots_sorted(zfs_handle_t *zhp, int flags, zfs_iter_f callback,
avl_create(&avl, zfs_snapshot_compare,
sizeof (zfs_node_t), offsetof(zfs_node_t, zn_avlnode));
ret = zfs_iter_snapshots(zhp, flags, zfs_sort_snaps, &avl, min_txg,
ret = zfs_iter_snapshots_v2(zhp, flags, zfs_sort_snaps, &avl, min_txg,
max_txg);
for (node = avl_first(&avl); node != NULL; node = AVL_NEXT(&avl, node))
@ -379,7 +408,14 @@ snapspec_cb(zfs_handle_t *zhp, void *arg)
* return ENOENT at the end.
*/
int
zfs_iter_snapspec(zfs_handle_t *fs_zhp, int flags, const char *spec_orig,
zfs_iter_snapspec(zfs_handle_t *fs_zhp, const char *spec_orig,
zfs_iter_f func, void *arg)
{
return (zfs_iter_snapspec_v2(fs_zhp, 0, spec_orig, func, arg));
}
int
zfs_iter_snapspec_v2(zfs_handle_t *fs_zhp, int flags, const char *spec_orig,
zfs_iter_f func, void *arg)
{
char *buf, *comma_separated, *cp;
@ -419,7 +455,7 @@ zfs_iter_snapspec(zfs_handle_t *fs_zhp, int flags, const char *spec_orig,
}
}
err = zfs_iter_snapshots_sorted(fs_zhp, flags,
err = zfs_iter_snapshots_sorted_v2(fs_zhp, flags,
snapspec_cb, &ssa, 0, 0);
if (ret == 0)
ret = err;
@ -456,14 +492,20 @@ zfs_iter_snapspec(zfs_handle_t *fs_zhp, int flags, const char *spec_orig,
* and as close as possible.
*/
int
zfs_iter_children(zfs_handle_t *zhp, int flags, zfs_iter_f func, void *data)
zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data)
{
return (zfs_iter_children_v2(zhp, 0, func, data));
}
int
zfs_iter_children_v2(zfs_handle_t *zhp, int flags, zfs_iter_f func, void *data)
{
int ret;
if ((ret = zfs_iter_snapshots(zhp, flags, func, data, 0, 0)) != 0)
if ((ret = zfs_iter_snapshots_v2(zhp, flags, func, data, 0, 0)) != 0)
return (ret);
return (zfs_iter_filesystems(zhp, flags, func, data));
return (zfs_iter_filesystems_v2(zhp, flags, func, data));
}
@ -524,10 +566,10 @@ iter_dependents_cb(zfs_handle_t *zhp, void *arg)
isf.zhp = zhp;
isf.next = ida->stack;
ida->stack = &isf;
err = zfs_iter_filesystems(zhp, ida->flags,
err = zfs_iter_filesystems_v2(zhp, ida->flags,
iter_dependents_cb, ida);
if (err == 0)
err = zfs_iter_snapshots(zhp, ida->flags,
err = zfs_iter_snapshots_v2(zhp, ida->flags,
iter_dependents_cb, ida, 0, 0);
ida->stack = isf.next;
}
@ -541,7 +583,14 @@ iter_dependents_cb(zfs_handle_t *zhp, void *arg)
}
int
zfs_iter_dependents(zfs_handle_t *zhp, int flags, boolean_t allowrecursion,
zfs_iter_dependents(zfs_handle_t *zhp, boolean_t allowrecursion,
zfs_iter_f func, void *data)
{
return (zfs_iter_dependents_v2(zhp, 0, allowrecursion, func, data));
}
int
zfs_iter_dependents_v2(zfs_handle_t *zhp, int flags, boolean_t allowrecursion,
zfs_iter_f func, void *data)
{
iter_dependents_arg_t ida;

4
lib/libzfs/libzfs_mount.c
View File

@ -940,7 +940,7 @@ zfs_iter_cb(zfs_handle_t *zhp, void *data)
}
libzfs_add_handle(cbp, zhp);
if (zfs_iter_filesystems(zhp, 0, zfs_iter_cb, cbp) != 0) {
if (zfs_iter_filesystems_v2(zhp, 0, zfs_iter_cb, cbp) != 0) {
zfs_close(zhp);
return (-1);
}
@ -1289,7 +1289,7 @@ zpool_enable_datasets(zpool_handle_t *zhp, const char *mntopts, int flags)
* over all child filesystems.
*/
libzfs_add_handle(&cb, zfsp);
if (zfs_iter_filesystems(zfsp, 0, zfs_iter_cb, &cb) != 0)
if (zfs_iter_filesystems_v2(zfsp, 0, zfs_iter_cb, &cb) != 0)
goto out;
/*

21
lib/libzfs/libzfs_sendrecv.c
View File

@ -288,7 +288,7 @@ send_iterate_prop(zfs_handle_t *zhp, boolean_t received_only, nvlist_t *nv);
/*
* Collect guid, valid props, optionally holds, etc. of a snapshot.
* This interface is intended for use as a zfs_iter_snapshots_sorted visitor.
* This interface is intended for use as a zfs_iter_snapshots_v2_sorted visitor.
*/
static int
send_iterate_snap(zfs_handle_t *zhp, void *arg)
@ -619,8 +619,8 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg)
min_txg = fromsnap_txg;
if (!sd->replicate && tosnap_txg != 0)
max_txg = tosnap_txg;
(void) zfs_iter_snapshots_sorted(zhp, 0, send_iterate_snap, sd,
min_txg, max_txg);
(void) zfs_iter_snapshots_sorted_v2(zhp, 0, send_iterate_snap,
sd, min_txg, max_txg);
} else {
char snapname[MAXPATHLEN] = { 0 };
zfs_handle_t *snap;
@ -662,7 +662,7 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg)
/* Iterate over children. */
if (sd->recursive)
rv = zfs_iter_filesystems(zhp, 0, send_iterate_fs, sd);
rv = zfs_iter_filesystems_v2(zhp, 0, send_iterate_fs, sd);
out:
/* Restore saved fields. */
@ -1083,7 +1083,7 @@ send_print_verbose(FILE *fout, const char *tosnap, const char *fromsnap,
/*
* Send a single filesystem snapshot, updating the send dump data.
* This interface is intended for use as a zfs_iter_snapshots_sorted visitor.
* This interface is intended for use as a zfs_iter_snapshots_v2_sorted visitor.
*/
static int
dump_snapshot(zfs_handle_t *zhp, void *arg)
@ -1293,7 +1293,7 @@ dump_filesystem(zfs_handle_t *zhp, send_dump_data_t *sdd)
zhp->zfs_name, sdd->tosnap);
}
}
rv = zfs_iter_snapshots_sorted(zhp, 0, dump_snapshot, sdd,
rv = zfs_iter_snapshots_sorted_v2(zhp, 0, dump_snapshot, sdd,
min_txg, max_txg);
} else {
char snapname[MAXPATHLEN] = { 0 };
@ -3162,9 +3162,9 @@ guid_to_name_cb(zfs_handle_t *zhp, void *arg)
return (EEXIST);
}
err = zfs_iter_children(zhp, 0, guid_to_name_cb, gtnd);
err = zfs_iter_children_v2(zhp, 0, guid_to_name_cb, gtnd);
if (err != EEXIST && gtnd->bookmark_ok)
err = zfs_iter_bookmarks(zhp, 0, guid_to_name_cb, gtnd);
err = zfs_iter_bookmarks_v2(zhp, 0, guid_to_name_cb, gtnd);
zfs_close(zhp);
return (err);
}
@ -3218,9 +3218,10 @@ guid_to_name_redact_snaps(libzfs_handle_t *hdl, const char *parent,
continue;
int err = guid_to_name_cb(zfs_handle_dup(zhp), &gtnd);
if (err != EEXIST)
err = zfs_iter_children(zhp, 0, guid_to_name_cb, &gtnd);
err = zfs_iter_children_v2(zhp, 0, guid_to_name_cb,
&gtnd);
if (err != EEXIST && bookmark_ok)
err = zfs_iter_bookmarks(zhp, 0, guid_to_name_cb,
err = zfs_iter_bookmarks_v2(zhp, 0, guid_to_name_cb,
&gtnd);
zfs_close(zhp);
if (err == EEXIST)