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/*
taken from nacl-20110221, from curvecp/load.c
- reformated using clang-format
*/
#include <unistd.h>
#include "e.h"
#include "readall.h"
int readall(int fd, void *xv, long long xlen) {
long long r;
unsigned char *x = (unsigned char *) xv;
while (xlen > 0) {
r = xlen;
if (r > 1048576) r = 1048576;
r = read(fd, x, r);
if (r == 0) errno = EPROTO;
if (r <= 0) {
if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
continue;
return -1;
}
x += r;
xlen -= r;
}
return 0;
}
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