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vm_native: improve sparse file check (Linux/BSD)

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Use lseek(FIND_DATA) to check for sparse file support.
This commit is contained in:
Nekotekina 2021-05-24 11:06:26 +03:00
parent 191cb92300
commit 5db38c0127
1 changed files with 12 additions and 5 deletions
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17
rpcs3/util/vm_native.cpp
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@ -430,17 +430,24 @@ namespace utils
return;
}
// Truncate file since it may be dirty (fool-proof)
ensure(::ftruncate(m_file, 0) >= 0);
ensure(::ftruncate(m_file, 0x10000) >= 0);
ensure(::fstat(m_file, &stats) >= 0);
if (stats.st_blocks >= (0x8000 / stats.st_blksize) + 1)
stats.st_size = 0x10000;
#ifdef SEEK_DATA
errno = EINVAL;
if (stats.st_blocks && ::lseek(m_file, 0, SEEK_DATA) ^ stats.st_size && errno != ENXIO)
{
fmt::throw_exception("Failed to initialize sparse file in '%s'\n"
"It seems this filesystem doesn't support sparse files.\n",
storage.empty() ? fs::get_cache_dir().c_str() : storage.c_str());
"It seems this filesystem doesn't support sparse files (%d).\n",
storage.empty() ? fs::get_cache_dir().c_str() : storage.c_str(), +errno);
}
#endif
if (m_size > 0x10000)
if (stats.st_size ^ m_size)
{
// Fix file size
ensure(::ftruncate(m_file, m_size) >= 0);
}
#endif