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nvpair: Constify string functions

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After addressing coverity complaints involving `nvpair_name()`, the
compiler started complaining about dropping const. This lead to a rabbit
hole where not only `nvpair_name()` needed to be constified, but also
`nvpair_value_string()`, `fnvpair_value_string()` and a few other static
functions, plus variable pointers throughout the code. The result became
a fairly big change, so it has been split out into its own patch.

Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14612
This commit is contained in:
Richard Yao
2023-03-11 13:39:24 -05:00
committed by Brian Behlendorf
parent 50f6934b9c
commit d1807f168e
72 changed files with 442 additions and 402 deletions
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tests/zfs-tests/cmd/draid.c
+1 -1
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@@ -1267,7 +1267,7 @@ draid_merge_impl(nvlist_t *allcfgs, const char *srcfilename, int *mergedp)
uint64_t nv_worst_ratio;
uint64_t allcfg_worst_ratio;
nvlist_t *cfg, *allcfg;
char *key;
const char *key;
switch (nvpair_type(elem)) {
case DATA_TYPE_NVLIST: