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MFV r323794: 8605 zfs channel programs: zfs.exists undocumented and non-working

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illumos/illumos-gate@5f39f884e2
5f39f884e2

https://www.illumos.org/issues/8605
  zfs.exists() in channel programs doesn't return any result, and should have a
  man page entry.

Reviewed by: Paul Dagnelie <pcd@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Author: Chris Williamson <chris.williamson@delphix.com>

MFC after:	5 weeks
X-MFC after:	r324163
This commit is contained in:
avg 2017-10-01 16:51:05 +00:00
parent 40508b538c
commit 852fc815f8
2 changed files with 13 additions and 1 deletions
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12
cddl/contrib/opensolaris/cmd/zfs/zfs-program.8
View File

@ -289,6 +289,18 @@ msg (string)
.Bd -ragged -compact -offset "xxxx"
Debug message to be printed.
.Ed
.It Em zfs.exists(dataset)
Returns true if the given dataset exists, or false if it doesn't.
A fatal error will be thrown if the dataset is not in the target pool.
That is, in a channel program running on rpool,
zfs.exists("rpool/nonexistent_fs") returns false, but
zfs.exists("somepool/fs_that_may_exist") will error.
.Pp
dataset (string)
.Bd -ragged -compact -offset "xxxx"
Dataset to check for existence.
Must be in the target pool.
.Ed
.It Em zfs.get_prop(dataset, property)
Returns two values.
First, a string, number or table containing the property value for the given

2
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp.c
View File

@ -717,7 +717,7 @@ zcp_exists(lua_State *state)
return (luaL_error(state, "unexpected error %d", error));
}
return (0);
return (1);
}
/*