fix(fs/mem): make lstat compliant with POSIX

[mkroening]

Cherry-picked from #2454.

[github-actions]

Benchmark Results

Details

Benchmark	Current: b498d4c	Previous: 30cb3f9	Performance Ratio
startup_benchmark Build Time	79.74 s	78.59 s	1.01 ❗
startup_benchmark File Size	0.76 MB	0.76 MB	1.00 ❗
Startup Time - 1 core	0.74 s (±0.02 s)	0.73 s (±0.02 s)	1.01
Startup Time - 2 cores	0.74 s (±0.02 s)	0.75 s (±0.02 s)	0.99
Startup Time - 4 cores	0.74 s (±0.02 s)	0.76 s (±0.02 s)	0.98
multithreaded_benchmark Build Time	76.43 s	80.39 s	0.95 ❗
multithreaded_benchmark File Size	0.82 MB	0.82 MB	1.00 ❗
Multithreaded Pi Efficiency - 2 Threads	88.86 % (±6.05 %)	89.59 % (±5.95 %)	0.99
Multithreaded Pi Efficiency - 4 Threads	44.80 % (±2.02 %)	43.86 % (±2.44 %)	1.02
Multithreaded Pi Efficiency - 8 Threads	25.62 % (±1.31 %)	25.65 % (±1.39 %)	1.00
micro_benchmarks Build Time	84.47 s	87.27 s	0.97 ❗
micro_benchmarks File Size	0.82 MB	0.82 MB	1.00 ❗
Scheduling time - 1 thread	64.81 ticks (±2.14 ticks)	64.58 ticks (±2.95 ticks)	1.00
Scheduling time - 2 threads	36.04 ticks (±2.47 ticks)	35.27 ticks (±2.44 ticks)	1.02
Micro - Time for syscall (getpid)	2.74 ticks (±0.15 ticks)	2.72 ticks (±0.18 ticks)	1.01
Memcpy speed - (built_in) block size 4096	83452.44 MByte/s (±57424.13 MByte/s)	84336.36 MByte/s (±58124.47 MByte/s)	0.99
Memcpy speed - (built_in) block size 1048576	31214.23 MByte/s (±25406.91 MByte/s)	30954.90 MByte/s (±25149.11 MByte/s)	1.01
Memcpy speed - (built_in) block size 16777216	25567.67 MByte/s (±21109.05 MByte/s)	27618.34 MByte/s (±22854.11 MByte/s)	0.93
Memset speed - (built_in) block size 4096	83235.58 MByte/s (±57275.23 MByte/s)	84961.36 MByte/s (±58506.83 MByte/s)	0.98
Memset speed - (built_in) block size 1048576	31972.50 MByte/s (±25849.54 MByte/s)	31697.81 MByte/s (±25573.78 MByte/s)	1.01
Memset speed - (built_in) block size 16777216	26135.71 MByte/s (±21416.82 MByte/s)	28408.60 MByte/s (±23353.48 MByte/s)	0.92
Memcpy speed - (rust) block size 4096	74061.87 MByte/s (±51634.05 MByte/s)	74740.31 MByte/s (±52172.06 MByte/s)	0.99
Memcpy speed - (rust) block size 1048576	31253.00 MByte/s (±25436.13 MByte/s)	30989.85 MByte/s (±25131.37 MByte/s)	1.01
Memcpy speed - (rust) block size 16777216	25463.50 MByte/s (±21013.76 MByte/s)	27766.19 MByte/s (±22932.85 MByte/s)	0.92
Memset speed - (rust) block size 4096	74557.56 MByte/s (±51994.77 MByte/s)	75196.89 MByte/s (±52449.92 MByte/s)	0.99
Memset speed - (rust) block size 1048576	32098.80 MByte/s (±25966.37 MByte/s)	31748.80 MByte/s (±25574.00 MByte/s)	1.01
Memset speed - (rust) block size 16777216	25980.95 MByte/s (±21277.33 MByte/s)	28552.59 MByte/s (±23427.10 MByte/s)	0.91
alloc_benchmarks Build Time	83.38 s	81.63 s	1.02 ❗
alloc_benchmarks File Size	0.84 MB	0.84 MB	1.00 ❗
Allocations - Allocation success	100.00 %	100.00 %	1
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	100.00 %	100.00 %	1
Allocations - Average Allocation time	5456.66 Ticks (±78.37 Ticks)	5722.73 Ticks (±63.96 Ticks)	0.95 ❗
Allocations - Average Allocation time (no fail)	5456.66 Ticks (±78.37 Ticks)	5722.73 Ticks (±63.96 Ticks)	0.95 ❗
Allocations - Average Deallocation time	733.59 Ticks (±183.66 Ticks)	1530.42 Ticks (±212.44 Ticks)	0.48 ❗
mutex_benchmark Build Time	83.81 s	80.99 s	1.03 ❗
mutex_benchmark File Size	0.82 MB	0.82 MB	1.00 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.10 ns (±0.36 ns)	12.10 ns (±0.36 ns)	1.00
Mutex Stress Test Average Time per Iteration - 2 Threads	17.80 ns (±3.01 ns)	17.00 ns (±3.01 ns)	1.05

This comment was automatically generated by workflow using github-action-benchmark.