{
char *p = buf;
ssize_t total = 0;
- ssize_t loaded = 0;
while (count > 0) {
- loaded = xread(fd, p, count);
- if (loaded <= 0) {
- if (total)
- return total;
- else
- return loaded;
- }
+ ssize_t loaded = xread(fd, p, count);
+ if (loaded <= 0)
+ return total ? total : loaded;
count -= loaded;
p += loaded;
total += loaded;
return total;
}
-void read_or_die(int fd, void *buf, size_t count)
-{
- ssize_t loaded;
-
- loaded = read_in_full(fd, buf, count);
- if (loaded == 0)
- die("unexpected end of file");
- else if (loaded < 0)
- die("read error (%s)", strerror(errno));
-}
-
int write_in_full(int fd, const void *buf, size_t count)
{
const char *p = buf;
ssize_t total = 0;
while (count > 0) {
- size_t written = xwrite(fd, p, count);
+ ssize_t written = xwrite(fd, p, count);
if (written < 0)
return -1;
if (!written) {
void write_or_die(int fd, const void *buf, size_t count)
{
- ssize_t written;
-
- written = write_in_full(fd, buf, count);
- if (written == 0)
- die("disk full?");
- else if (written < 0) {
+ if (write_in_full(fd, buf, count) < 0) {
if (errno == EPIPE)
exit(0);
die("write error (%s)", strerror(errno));
int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg)
{
- ssize_t written;
-
- written = write_in_full(fd, buf, count);
- if (written == 0) {
- fprintf(stderr, "%s: disk full?\n", msg);
- return 0;
- }
- else if (written < 0) {
+ if (write_in_full(fd, buf, count) < 0) {
if (errno == EPIPE)
exit(0);
fprintf(stderr, "%s: write error (%s)\n",
int write_or_whine(int fd, const void *buf, size_t count, const char *msg)
{
- ssize_t written;
-
- written = write_in_full(fd, buf, count);
- if (written == 0) {
- fprintf(stderr, "%s: disk full?\n", msg);
- return 0;
- }
- else if (written < 0) {
+ if (write_in_full(fd, buf, count) < 0) {
fprintf(stderr, "%s: write error (%s)\n",
msg, strerror(errno));
return 0;