Permission denied?

[orangeC23]

Describe the bug

Using clang to compile the following C file into Wasm binaries, and execute the Wasm binaries. However, wasmer prints different result.

Steps to reproduce

The c file is :

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>

int main() {
    const char* file_name = "Data/hello.txt";
    int open_style= O_RDONLY;
    int fd = get_fd(file_name, open_style);
    snapshot(fd);
    return 0;
}


int get_fd(const char* file_name, int open_style){
    // Open a file for reading
    int fd = open(file_name, open_style);
    if (fd == -1) {
        perror("Failed to open the file");
        return 1;
    }

    return fd;
}


int snapshot(int myfd){   
    struct stat file_info;
    if (fstat(myfd, &file_info) == -1) {
        perror("Error getting file attributes");
        close(myfd);
        return 1;
    }

    printf("File Size: %lld bytes\\n", (long long)file_info.st_size);
    printf("File Permissions: %o\\n", file_info.st_mode & ~S_IFMT); 
    printf("File Owner UID: %d\\n", file_info.st_uid); 
    printf("File Group GID: %d\\n", file_info.st_gid);
    

    off_t cur_offset = lseek(myfd, 0, SEEK_CUR);
    if (cur_offset == -1) {
        perror("Error getting current offset");
    }
    printf("Current offset: %lld\\n", (long long)cur_offset);

    if (close(myfd) == -1) {
        perror("Error closing file");
        return 1;
    }
}

(1)compile it into wasm ./wasi-sdk-16.0/bin/clang --target=wasm32-unkown-wasi --sysroot=./wasi-sdk-16.0/share/wasi-sysroot open.c -o open.wasm (2)exeute open.wasm ./wasmer-linux-amd64/bin/wasmer run --dir=./Data open.wasm ./wasmtime run --dir=./Data open.wasm ./wasm-micro-runtime-WAMR-05-18-2022/product-mini/platforms/linux/build/iwasm --dir=./Data open.wasm ./wasmedge0.9/bin/wasmedge --dir=./Data open.wasm The permission of Data/hello.txt is 0700, user1 create the Data/hello.txt file and user1 execute the Wasm file.

Expected behavior

wasmtime, WAMR and WasmEdge prints:

File Size: 30 bytes\nFile Permissions: 0\nFile Owner UID: 0\nFile Group GID: 0\nCurrent offset: 0\n

Actual behavior

wasmer prints:

./wasmer-linux-amd64/bin/wasmer: Permission denied