Den 2020-01-11 15:10, skrev David Balažic:
pread on /dev/sda fails with Illegal seek.
Confirmed on windows 10, 64-bit.
My code:
$ cat t.c
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
int main(int argc, char *argv[])
{
int fd = open("/dev/sda", O_RDONLY, 0);
if (fd < 0) {
fprintf(stderr, "%s. open /dev/sda: %m\n", argv[0]);
exit(1);
}
char *buffer = malloc(512);
if (!buffer) {
fprintf(stderr, "%s: Out of memory\n", argv[0]);
exit(1);
}
int result = pread(fd, buffer, 512, 0);
if (result < 0) {
fprintf(stderr, "%s: pread: %m\n", argv[0]);
exit(1);
}
printf("All right!\n");
return 0;
}
Running in a mintty as Administrator:
$ ./t
./t: pread: Illegal seek
$ uname -a
CYGWIN_NT-10.0 panter 3.1.2(0.340/5/3) 2019-12-21 15:25 x86_64 Cygwin
$ cc --version
cc (GCC) 7.4.0
Copyright (C) 2017 Free Software Foundation, Inc.
Regards,
Enrique Perez-Terron
0xD6B3CEE5.asc
Description: application/pgp-keys
-- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
