Fail to get the file discriptor?

[Userzxcvbvnm]

Describe the bug

Fail to get the file descriptor, while other Wasm runtimes and native could get it successfully.

Steps to reproduce

The c file is :

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>


int get_fd(const char *filename, int flags) {
    int fd = open(filename, flags);
    
    if (fd == -1) {
        printf("Get file descriptor of file %s failed!\n", filename);
        return -1;
    } else {
        printf("Get file descriptor of file %s succeed!\n", filename);
        return fd;
    }
}


int main() {
    int fd = get_fd("./hello.txt", O_RDWR);
    return 0;
}

(1)compile to Wasm:
./wasi-sdk-21.0/bin/clang --target=wasm32-unkown-wasi --sysroot=./wasi-sdk-21.0/share/wasi-sysroot read.c -o read.wasm
(2)compile to native code:
gcc read.c -o read
(3)Running wasm:
wasmer run --dir=. read.wasm
(4)Running native binaries
./read

Expected behavior

Output:
Get file descriptor of file ./hello.txt succeed!
And this is the output of native and other Wasm runtimes, such as wasmtime.

Actual behavior

wasmer prints:
Get file descriptor of file ./hello.txt failed!

Additional context

Ubuntu 20.04
wasmer-4.3.1

[Userzxcvbvnm]

It seems wasmer could ont open any file, whether native and other runtimes could.

[maminrayej]

@Userzxcvbvnm could you please test your use case with #4730? since I believe this is a duplicate of #4724.

[Userzxcvbvnm]

I tried my test case with the wasmer of commit 4730, but failed again with the same output I mentioned.
The steps are:
(1) git clone https://github.com/wasmerio/wasmer.git
(2)git reset --hard 6aee08d6b0e1b9a9cc38e6bef0e93c0aa3f52fe1 (set to commit 4730)
(3)make build-wasmer
(4)wasmer run --dir=. read.wasm
Print:

Get file descriptor of file ./hello.txt failed!

[maminrayej]

Thanks for testing. I'll investigate.

[maminrayej]

I can confirm your provided example, now works using the latest commit of #4730.

[Userzxcvbvnm]

Thanks for your reply and commit!
I reproduced the test by setting Wasmer to commit d202535(the newest 4730 commit). However, I still get the result Get file descriptor of file ./hello.txt failed!.
Is there anything wrong with my command or with your code?