wasmer
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Fail to set the file time.
Describe the bug
Does not set time as expected.
Steps to reproduce
(1)The test case is :
#define _XOPEN_SOURCE 700
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
void path_filestat_set_times_00027_WD7wr(int fd, const char *pathname) {
printf("Enter function path_filestat_set_times_00027_WD7wr\n");
struct timespec times[2] = {{946684800, 0}, {946684800, 0}}; // Set times to year 2000
if (utimensat(AT_FDCWD, "subfile_1", times, AT_SYMLINK_FOLLOW) == 0) {
printf("Timestamps adjusted successfully\n");
struct stat statbuf;
if (fstat(fd, &statbuf) == -1) {
printf("Failed to get file status\n");
return;
}
printf("File timestamps after adjustment:\n");
printf("Last access time: %ld\n", statbuf.st_atime);
printf("Last modification time: %ld\n", statbuf.st_mtime);
} else {
printf("Failed to adjust timestamps\n");
}
}
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;
}
}
void closebyfd(int fd) {
if (close(fd) == -1) {
printf("Close the file %d by descriptor failed!\n", fd);
}
}
int main() {
int fd = get_fd("subfile_1", O_RDWR | O_CREAT);
if (fd == -1) {
return -1;
}
path_filestat_set_times_00027_WD7wr(fd, "subfile_1");
closebyfd(fd);
return 0;
}
(2)compile to wasm:./wasi-sdk-21.0/bin/clang --target=wasm32-unkown-wasi --sysroot=./wasi-sdk-21.0/share/wasi-sysroot test.c -o test.wasm
(3)Running wasm:
(Before run the Wasm file, file subfile_1 exists.)
wasmer run --dir=. test.wasm
Expected behavior
print:
Get file descriptor of file subfile_1 succeed!
Enter function path_filestat_set_times_00027_WD7wr
Timestamps adjusted successfully
File timestamps after adjustment:
Last access time: 946684800
Last modification time: 946684800
And this is what WAMR, wasmtime and WasmEdge do.
Actual behavior
wasmer print:
Get file descriptor of file subfile_1 succeed!
Enter function path_filestat_set_times_00027_WD7wr
Timestamps adjusted successfully
File timestamps after adjustment:
Last access time: 1719396243
Last modification time: 1719396243
wasmer does not set the time as expected.
Additional context
Ubuntu 20.04 x86_64 wasmer-4.3.1 and wasmer-4.2.2