* The writing side could use stdio, but since the reading
* side can't, we stay with pure read/write interfaces.
*/
-static void safe_write(int fd, const void *buf, unsigned n)
+ssize_t safe_write(int fd, const void *buf, ssize_t n)
{
+ ssize_t nn = n;
while (n) {
- int ret = write(fd, buf, n);
+ int ret = xwrite(fd, buf, n);
if (ret > 0) {
- buf += ret;
+ buf = (char *) buf + ret;
n -= ret;
continue;
}
if (!ret)
die("write error (disk full?)");
- if (errno == EAGAIN || errno == EINTR)
- continue;
die("write error (%s)", strerror(errno));
}
+ return nn;
}
/*
int n = 0;
while (n < size) {
- int ret = read(fd, buffer + n, size - n);
- if (ret < 0) {
- if (errno == EINTR || errno == EAGAIN)
- continue;
+ int ret = xread(fd, (char *) buffer + n, size - n);
+ if (ret < 0)
die("read error (%s)", strerror(errno));
- }
if (!ret)
- die("unexpected EOF");
+ die("The remote end hung up unexpectedly");
n += ret;
}
}