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#include <unistd.h>
#include <poll.h>
#include "e.h"
#include "writeall.h"
int writeall(int fd, const void *xv, long long xlen) {
const unsigned char *x = xv;
long long w;
while (xlen > 0) {
w = xlen;
if (w > 1048576) w = 1048576;
w = write(fd, x, (unsigned long long) w);
if (w < 0) {
if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK) {
struct pollfd p;
p.fd = fd;
p.events = POLLOUT | POLLERR;
poll(&p, 1, -1);
continue;
}
return -1;
}
x += w;
xlen -= w;
}
return 0;
}
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