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libzfs: const'ify path argument to zfs_path_to_zhandle

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zfs_path_to_zhandle has no need to mutate the path argument,
most notably:

- zfs_open takes path as const
- getextmntent takes path as const
- fprintf most clearly doesn't need to mutate it

It's hard to foresee any reason that libzfs could conceivably
want to mutate it in the future, either, so const'ify it.

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Closes #10605
This commit is contained in:
Kyle Evans 2020-07-22 13:14:20 -05:00 committed by GitHub
parent db5b3926e9
commit b197457cd6
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2 changed files with 3 additions and 2 deletions
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3
include/libzfs.h
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@ -789,7 +789,8 @@ extern int zfs_show_diffs(zfs_handle_t *, int, const char *, const char *,
extern const char *zfs_type_to_name(zfs_type_t);
extern void zfs_refresh_properties(zfs_handle_t *);
extern int zfs_name_valid(const char *, zfs_type_t);
extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, char *, zfs_type_t);
extern zfs_handle_t *zfs_path_to_zhandle(libzfs_handle_t *, const char *,
zfs_type_t);
extern int zfs_parent_name(zfs_handle_t *, char *, size_t);
extern boolean_t zfs_dataset_exists(libzfs_handle_t *, const char *,
zfs_type_t);

2
lib/libzfs/libzfs_util.c
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@ -1104,7 +1104,7 @@ zfs_get_pool_handle(const zfs_handle_t *zhp)
* fs/vol/snap/bkmark name.
*/
zfs_handle_t *
zfs_path_to_zhandle(libzfs_handle_t *hdl, char *path, zfs_type_t argtype)
zfs_path_to_zhandle(libzfs_handle_t *hdl, const char *path, zfs_type_t argtype)
{
struct stat64 statbuf;
struct extmnttab entry;