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7386 zfs get does not work properly with bookmarks

illumos/illumos-gate@edb901aab9
edb901aab9

https://www.illumos.org/issues/7386
  The zfs get command does not work with the bookmark parameter while it works
  properly with both filesystem and snapshot:
  # zfs get -t all -r creation rpool/test
  NAME               PROPERTY  VALUE                  SOURCE
  rpool/test         creation  Fri Sep 16 15:00 2016  -
  rpool/test@snap    creation  Fri Sep 16 15:00 2016  -
  rpool/test#bkmark  creation  Fri Sep 16 15:00 2016  -
  # zfs get -t all -r creation rpool/test@snap
  NAME             PROPERTY  VALUE                  SOURCE
  rpool/test@snap  creation  Fri Sep 16 15:00 2016  -
  # zfs get -t all -r creation rpool/test#bkmark
  cannot open 'rpool/test#bkmark': invalid dataset name
  #
  The zfs get command should be modified to work properly with bookmarks too.

Reviewed by: Simon Klinkert <simon.klinkert@gmail.com>
Reviewed by: Paul Dagnelie <pcd@delphix.com>
Approved by: Matthew Ahrens <mahrens@delphix.com>
Author: Marcel Telka <marcel@telka.sk>
This commit is contained in:
Josh Paetzel 2017-04-21 19:53:52 +00:00
commit ef18459108
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=317267
7 changed files with 168 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
cddl/contrib/opensolaris/cmd/zfs/zfs.8
View File

@ -25,13 +25,13 @@
.\" Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
.\" Copyright (c) 2014, Joyent, Inc. All rights reserved.
.\" Copyright (c) 2013, Steven Hartland <smh@FreeBSD.org>
.\" Copyright (c) 2014 Nexenta Systems, Inc. All Rights Reserved.
.\" Copyright (c) 2016 Nexenta Systems, Inc. All Rights Reserved.
.\" Copyright (c) 2014, Xin LI <delphij@FreeBSD.org>
.\" Copyright (c) 2014-2015, The FreeBSD Foundation, All Rights Reserved.
.\"
.\" $FreeBSD$
.\"
.Dd May 31, 2016
.Dd September 16, 2016
.Dt ZFS 8
.Os
.Sh NAME
@ -114,7 +114,7 @@
.Op Fl t Ar type Ns Oo , Ns type Ns Oc Ns ...
.Oo Fl s Ar property Oc Ns ...
.Oo Fl S Ar property Oc Ns ...
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot | Ns Ar bookmark Ns ...
.Nm
.Cm set
.Ar property Ns = Ns Ar value Oo Ar property Ns = Ns Ar value Oc Ns ...
@ -2156,7 +2156,7 @@ section.
.Op Fl t Ar type Ns Oo , Ns Ar type Oc Ns ...
.Op Fl s Ar source Ns Oo , Ns Ar source Oc Ns ...
.Ar all | property Ns Oo , Ns Ar property Oc Ns ...
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns ...
.Ar filesystem Ns | Ns Ar volume Ns | Ns Ar snapshot Ns | Ns Ar bookmark Ns ...
.Xc
.Pp
Displays properties for the given datasets. If no datasets are specified, then

4
cddl/contrib/opensolaris/cmd/zfs/zfs_main.c
View File

@ -243,7 +243,7 @@ get_usage(zfs_help_t idx)
"[-o \"all\" | field[,...]]\n"
"\t [-t type[,...]] [-s source[,...]]\n"
"\t <\"all\" | property[,...]> "
"[filesystem|volume|snapshot] ...\n"));
"[filesystem|volume|snapshot|bookmark] ...\n"));
case HELP_INHERIT:
return (gettext("\tinherit [-rS] <property> "
"<filesystem|volume|snapshot> ...\n"));
@ -1622,7 +1622,7 @@ zfs_do_get(int argc, char **argv)
{
zprop_get_cbdata_t cb = { 0 };
int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
int types = ZFS_TYPE_DATASET;
int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
char *value, *fields;
int ret = 0;
int limit = 0;

118
cddl/contrib/opensolaris/lib/libzfs/common/libzfs_dataset.c
View File

@ -103,7 +103,7 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
char what;
(void) zfs_prop_get_table();
if (dataset_namecheck(path, &why, &what) != 0) {
if (entity_namecheck(path, &why, &what) != 0) {
if (hdl != NULL) {
switch (why) {
case NAME_ERR_TOOLONG:
@ -132,9 +132,10 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
"'%c' in name"), what);
break;
case NAME_ERR_MULTIPLE_AT:
case NAME_ERR_MULTIPLE_DELIMITERS:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"multiple '@' delimiters in name"));
"multiple '@' and/or '#' delimiters in "
"name"));
break;
case NAME_ERR_NOLETTER:
@ -165,7 +166,7 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
if (!(type & ZFS_TYPE_SNAPSHOT) && strchr(path, '@') != NULL) {
if (hdl != NULL)
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"snapshot delimiter '@' in filesystem name"));
"snapshot delimiter '@' is not expected here"));
return (0);
}
@ -176,6 +177,20 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type,
return (0);
}
if (!(type & ZFS_TYPE_BOOKMARK) && strchr(path, '#') != NULL) {
if (hdl != NULL)
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"bookmark delimiter '#' is not expected here"));
return (0);
}
if (type == ZFS_TYPE_BOOKMARK && strchr(path, '#') == NULL) {
if (hdl != NULL)
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"missing '#' delimiter in bookmark name"));
return (0);
}
if (modifying && strchr(path, '%') != NULL) {
if (hdl != NULL)
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
@ -613,8 +628,36 @@ make_bookmark_handle(zfs_handle_t *parent, const char *path,
return (zhp);
}
struct zfs_open_bookmarks_cb_data {
const char *path;
zfs_handle_t *zhp;
};
static int
zfs_open_bookmarks_cb(zfs_handle_t *zhp, void *data)
{
struct zfs_open_bookmarks_cb_data *dp = data;
/*
* Is it the one we are looking for?
*/
if (strcmp(dp->path, zfs_get_name(zhp)) == 0) {
/*
* We found it. Save it and let the caller know we are done.
*/
dp->zhp = zhp;
return (EEXIST);
}
/*
* Not found. Close the handle and ask for another one.
*/
zfs_close(zhp);
return (0);
}
/*
* Opens the given snapshot, filesystem, or volume. The 'types'
* Opens the given snapshot, bookmark, filesystem, or volume. The 'types'
* argument is a mask of acceptable types. The function will print an
* appropriate error message and return NULL if it can't be opened.
*/
@ -623,6 +666,7 @@ zfs_open(libzfs_handle_t *hdl, const char *path, int types)
{
zfs_handle_t *zhp;
char errbuf[1024];
char *bookp;
(void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN, "cannot open '%s'"), path);
@ -630,20 +674,68 @@ zfs_open(libzfs_handle_t *hdl, const char *path, int types)
/*
* Validate the name before we even try to open it.
*/
if (!zfs_validate_name(hdl, path, ZFS_TYPE_DATASET, B_FALSE)) {
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"invalid dataset name"));
if (!zfs_validate_name(hdl, path, types, B_FALSE)) {
(void) zfs_error(hdl, EZFS_INVALIDNAME, errbuf);
return (NULL);
}
/*
* Try to get stats for the dataset, which will tell us if it exists.
* Bookmarks needs to be handled separately.
*/
errno = 0;
if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
(void) zfs_standard_error(hdl, errno, errbuf);
return (NULL);
bookp = strchr(path, '#');
if (bookp == NULL) {
/*
* Try to get stats for the dataset, which will tell us if it
* exists.
*/
errno = 0;
if ((zhp = make_dataset_handle(hdl, path)) == NULL) {
(void) zfs_standard_error(hdl, errno, errbuf);
return (NULL);
}
} else {
char dsname[ZFS_MAX_DATASET_NAME_LEN];
zfs_handle_t *pzhp;
struct zfs_open_bookmarks_cb_data cb_data = {path, NULL};
/*
* We need to cut out '#' and everything after '#'
* to get the parent dataset name only.
*/
assert(bookp - path < sizeof (dsname));
(void) strncpy(dsname, path, bookp - path);
dsname[bookp - path] = '\0';
/*
* Create handle for the parent dataset.
*/
errno = 0;
if ((pzhp = make_dataset_handle(hdl, dsname)) == NULL) {
(void) zfs_standard_error(hdl, errno, errbuf);
return (NULL);
}
/*
* Iterate bookmarks to find the right one.
*/
errno = 0;
if ((zfs_iter_bookmarks(pzhp, zfs_open_bookmarks_cb,
&cb_data) == 0) && (cb_data.zhp == NULL)) {
(void) zfs_error(hdl, EZFS_NOENT, errbuf);
zfs_close(pzhp);
return (NULL);
}
if (cb_data.zhp == NULL) {
(void) zfs_standard_error(hdl, errno, errbuf);
zfs_close(pzhp);
return (NULL);
}
zhp = cb_data.zhp;
/*
* Cleanup.
*/
zfs_close(pzhp);
}
if (zhp == NULL) {

5
cddl/contrib/opensolaris/lib/libzfs/common/libzfs_pool.c
View File

@ -947,9 +947,10 @@ zpool_name_valid(libzfs_handle_t *hdl, boolean_t isopen, const char *pool)
"trailing slash in name"));
break;
case NAME_ERR_MULTIPLE_AT:
case NAME_ERR_MULTIPLE_DELIMITERS:
zfs_error_aux(hdl, dgettext(TEXT_DOMAIN,
"multiple '@' delimiters in name"));
"multiple '@' and/or '#' delimiters in "
"name"));
break;
default:

2
cddl/contrib/opensolaris/lib/libzfs/common/libzfs_util.c
View File

@ -718,7 +718,7 @@ zfs_get_pool_handle(const zfs_handle_t *zhp)
* Given a name, determine whether or not it's a valid path
* (starts with '/' or "./"). If so, walk the mnttab trying
* to match the device number. If not, treat the path as an
* fs/vol/snap name.
* fs/vol/snap/bkmark name.
*/
zfs_handle_t *
zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)

97
sys/cddl/contrib/opensolaris/common/zfs/zfs_namecheck.c
View File

@ -120,9 +120,9 @@ permset_namecheck(const char *path, namecheck_err_t *why, char *what)
}
/*
* Dataset names must be of the following form:
* Entity names must be of the following form:
*
* [component][/]*[component][@component]
* [component/]*[component][(@|#)component]?
*
* Where each component is made up of alphanumeric characters plus the following
* characters:
@ -133,10 +133,10 @@ permset_namecheck(const char *path, namecheck_err_t *why, char *what)
* names for temporary clones (for online recv).
*/
int
dataset_namecheck(const char *path, namecheck_err_t *why, char *what)
entity_namecheck(const char *path, namecheck_err_t *why, char *what)
{
const char *loc, *end;
int found_snapshot;
const char *start, *end;
int found_delim;
/*
* Make sure the name is not too long.
@ -161,12 +161,13 @@ dataset_namecheck(const char *path, namecheck_err_t *why, char *what)
return (-1);
}
loc = path;
found_snapshot = 0;
start = path;
found_delim = 0;
for (;;) {
/* Find the end of this component */
end = loc;
while (*end != '/' && *end != '@' && *end != '\0')
end = start;
while (*end != '/' && *end != '@' && *end != '#' &&
*end != '\0')
end++;
if (*end == '\0' && end[-1] == '/') {
@ -176,25 +177,8 @@ dataset_namecheck(const char *path, namecheck_err_t *why, char *what)
return (-1);
}
/* Zero-length components are not allowed */
if (loc == end) {
if (why) {
/*
* Make sure this is really a zero-length
* component and not a '@@'.
*/
if (*end == '@' && found_snapshot) {
*why = NAME_ERR_MULTIPLE_AT;
} else {
*why = NAME_ERR_EMPTY_COMPONENT;
}
}
return (-1);
}
/* Validate the contents of this component */
while (loc != end) {
for (const char *loc = start; loc != end; loc++) {
if (!valid_char(*loc) && *loc != '%') {
if (why) {
*why = NAME_ERR_INVALCHAR;
@ -202,43 +186,64 @@ dataset_namecheck(const char *path, namecheck_err_t *why, char *what)
}
return (-1);
}
loc++;
}
/* Snapshot or bookmark delimiter found */
if (*end == '@' || *end == '#') {
/* Multiple delimiters are not allowed */
if (found_delim != 0) {
if (why)
*why = NAME_ERR_MULTIPLE_DELIMITERS;
return (-1);
}
found_delim = 1;
}
/* Zero-length components are not allowed */
if (start == end) {
if (why)
*why = NAME_ERR_EMPTY_COMPONENT;
return (-1);
}
/* If we've reached the end of the string, we're OK */
if (*end == '\0')
return (0);
if (*end == '@') {
/*
* If we've found an @ symbol, indicate that we're in
* the snapshot component, and report a second '@'
* character as an error.
*/
if (found_snapshot) {
if (why)
*why = NAME_ERR_MULTIPLE_AT;
return (-1);
}
found_snapshot = 1;
}
/*
* If there is a '/' in a snapshot name
* If there is a '/' in a snapshot or bookmark name
* then report an error
*/
if (*end == '/' && found_snapshot) {
if (*end == '/' && found_delim != 0) {
if (why)
*why = NAME_ERR_TRAILING_SLASH;
return (-1);
}
/* Update to the next component */
loc = end + 1;
start = end + 1;
}
}
/*
* Dataset is any entity, except bookmark
*/
int
dataset_namecheck(const char *path, namecheck_err_t *why, char *what)
{
int ret = entity_namecheck(path, why, what);
if (ret == 0 && strchr(path, '#') != NULL) {
if (why != NULL) {
*why = NAME_ERR_INVALCHAR;
*what = '#';
}
return (-1);
}
return (ret);
}
/*
* mountpoint names must be of the following form:

3
sys/cddl/contrib/opensolaris/common/zfs/zfs_namecheck.h
View File

@ -38,7 +38,7 @@ typedef enum {
NAME_ERR_EMPTY_COMPONENT, /* name contains an empty component */
NAME_ERR_TRAILING_SLASH, /* name ends with a slash */
NAME_ERR_INVALCHAR, /* invalid character found */
NAME_ERR_MULTIPLE_AT, /* multiple '@' characters found */
NAME_ERR_MULTIPLE_DELIMITERS, /* multiple '@'/'#' delimiters found */
NAME_ERR_NOLETTER, /* pool doesn't begin with a letter */
NAME_ERR_RESERVED, /* entire name is reserved */
NAME_ERR_DISKLIKE, /* reserved disk name (c[0-9].*) */
@ -49,6 +49,7 @@ typedef enum {
#define ZFS_PERMSET_MAXLEN 64
int pool_namecheck(const char *, namecheck_err_t *, char *);
int entity_namecheck(const char *, namecheck_err_t *, char *);
int dataset_namecheck(const char *, namecheck_err_t *, char *);
int mountpoint_namecheck(const char *, namecheck_err_t *);
int zfs_component_namecheck(const char *, namecheck_err_t *, char *);