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inodecalc: add 32bit versions of hashs

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This commit is contained in:
Antonio SJ Musumeci 2020-08-03 17:18:22 -04:00
parent 124299e185
commit 30d13b7f77
3 changed files with 91 additions and 2 deletions
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64
src/fs_inode.cpp
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@ -34,6 +34,14 @@ static uint64_t hybrid_hash(const char*,const uint64_t,const mode_t,const dev_t,
static inodefunc_t g_func = hybrid_hash;
static
uint32_t
h64_to_h32(uint64_t h_)
{
return (h_ - (h_ >> 32));
}
static
uint64_t
passthrough(const char *fusepath_,
@ -58,6 +66,25 @@ path_hash(const char *fusepath_,
fs::inode::MAGIC);
}
static
uint64_t
path_hash32(const char *fusepath_,
const uint64_t fusepath_len_,
const mode_t mode_,
const dev_t dev_,
const ino_t ino_)
{
uint64_t h;
h = path_hash(fusepath_,
fusepath_len_,
mode_,
dev_,
ino_);
return h64_to_h32(h);
}
static
uint64_t
devino_hash(const char *fusepath_,
@ -76,6 +103,25 @@ devino_hash(const char *fusepath_,
fs::inode::MAGIC);
}
static
uint64_t
devino_hash32(const char *fusepath_,
const uint64_t fusepath_len_,
const mode_t mode_,
const dev_t dev_,
const ino_t ino_)
{
uint64_t h;
h = devino_hash(fusepath_,
fusepath_len_,
mode_,
dev_,
ino_);
return h64_to_h32(h);
}
static
uint64_t
hybrid_hash(const char *fusepath_,
@ -89,6 +135,18 @@ hybrid_hash(const char *fusepath_,
devino_hash(fusepath_,fusepath_len_,mode_,dev_,ino_));
}
static
uint64_t
hybrid_hash32(const char *fusepath_,
const uint64_t fusepath_len_,
const mode_t mode_,
const dev_t dev_,
const ino_t ino_)
{
return (S_ISDIR(mode_) ?
path_hash32(fusepath_,fusepath_len_,mode_,dev_,ino_) :
devino_hash32(fusepath_,fusepath_len_,mode_,dev_,ino_));
}
namespace fs
{
@ -101,10 +159,16 @@ namespace fs
g_func = passthrough;
ef(algo_ == "path-hash")
g_func = path_hash;
ef(algo_ == "path-hash32")
g_func = path_hash32;
ef(algo_ == "devino-hash")
g_func = devino_hash;
ef(algo_ == "devino-hash32")
g_func = devino_hash32;
ef(algo_ == "hybrid-hash")
g_func = hybrid_hash;
ef(algo_ == "hybrid-hash32")
g_func = hybrid_hash32;
else
return -EINVAL;