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Merge pull request #22867 from poettering/lockdev-util

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add small "udevadm lock" tool for locking a block device
This commit is contained in:
Yu Watanabe
2022-04-05 03:04:23 +09:00
committed by GitHub
parent 4e9a7022c5 ae61c53c3b
commit cf708d803e
8 changed files with 549 additions and 6 deletions
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10
src/basic/hash-funcs.c
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@@ -102,10 +102,16 @@ DEFINE_HASH_OPS(uint64_hash_ops, uint64_t, uint64_hash_func, uint64_compare_func
void devt_hash_func(const dev_t *p, struct siphash *state) {
siphash24_compress(p, sizeof(dev_t), state);
}
#endif
int devt_compare_func(const dev_t *a, const dev_t *b) {
return CMP(*a, *b);
int r;
r = CMP(major(*a), major(*b));
if (r != 0)
return r;
return CMP(minor(*a), minor(*b));
}
DEFINE_HASH_OPS(devt_hash_ops, dev_t, devt_hash_func, devt_compare_func);
#endif

7
src/basic/hash-funcs.h
View File

@@ -102,10 +102,9 @@ extern const struct hash_ops uint64_hash_ops;
* 64bit archs. Yuck! */
#if SIZEOF_DEV_T != 8
void devt_hash_func(const dev_t *p, struct siphash *state) _pure_;
int devt_compare_func(const dev_t *a, const dev_t *b) _pure_;
extern const struct hash_ops devt_hash_ops;
#else
#define devt_hash_func uint64_hash_func
#define devt_compare_func uint64_compare_func
#define devt_hash_ops uint64_hash_ops
#endif
int devt_compare_func(const dev_t *a, const dev_t *b) _pure_;
extern const struct hash_ops devt_hash_ops;