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| author | Al Viro <viro@zeniv.linux.org.uk> | 2019-12-17 14:15:04 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-07 00:10:29 -0500 |
| commit | 0f89589a8c6f1033cb847a606517998efb0da8ee (patch) | |
| tree | c20e5e8b71553ced5b592d6135a76cb975e12253 /drivers | |
| parent | 7dc2993a9e51dd2eee955944efec65bef90265b7 (diff) | |
| download | linux-0f89589a8c6f1033cb847a606517998efb0da8ee.tar.bz2 | |
Pass consistent param->type to fs_parse()
As it is, vfs_parse_fs_string() makes "foo" and "foo=" indistinguishable;
both get fs_value_is_string for ->type and NULL for ->string. To make
it even more unpleasant, that combination is impossible to produce with
fsconfig().
Much saner rules would be
"foo" => fs_value_is_flag, NULL
"foo=" => fs_value_is_string, ""
"foo=bar" => fs_value_is_string, "bar"
All cases are distinguishable, all results are expressable by fsconfig(),
->has_value checks are much simpler that way (to the point of the field
being useless) and quite a few regressions go away (gfs2 has no business
accepting -o nodebug=, for example).
Partially based upon patches from Miklos.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/rbd.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 2b184563cd32..9fc686be81ca 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -6433,7 +6433,7 @@ static int rbd_parse_options(char *options, struct rbd_parse_opts_ctx *pctx) if (*key) { struct fs_parameter param = { .key = key, - .type = fs_value_is_string, + .type = fs_value_is_flag, }; char *value = strchr(key, '='); size_t v_len = 0; @@ -6443,14 +6443,11 @@ static int rbd_parse_options(char *options, struct rbd_parse_opts_ctx *pctx) continue; *value++ = 0; v_len = strlen(value); - } - - - if (v_len > 0) { param.string = kmemdup_nul(value, v_len, GFP_KERNEL); if (!param.string) return -ENOMEM; + param.type = fs_value_is_string; } param.size = v_len; |