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Back out the previous commit, and fix the bug rather than try to hide its

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symptoms: make timeouts and short transfers fatal, and set errno to an
appropriate value (ETIMEDOUT for a timeout, EPIPE for a short transfer).

MFC after:	2 weeks
This commit is contained in:
Dag-Erling Smørgrav 2002-10-27 15:08:21 +00:00
parent 4caad4e81d
commit e24f60e74f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106040
1 changed files with 18 additions and 10 deletions
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28
lib/libfetch/common.c
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@ -364,13 +364,17 @@ _fetch_read(conn_t *conn, char *buf, size_t len)
wait.tv_usec += 1000000;
wait.tv_sec--;
}
if (wait.tv_sec < 0)
return (rlen);
if (wait.tv_sec < 0) {
errno = ETIMEDOUT;
_fetch_syserr();
return (-1);
}
errno = 0;
r = select(conn->sd + 1, &readfds, NULL, NULL, &wait);
if (r == -1) {
if (errno == EINTR && fetchRestartCalls)
continue;
_fetch_syserr();
return (-1);
}
}
@ -380,8 +384,12 @@ _fetch_read(conn_t *conn, char *buf, size_t len)
else
#endif
rlen = read(conn->sd, buf, len);
if (rlen == 0)
break;
if (rlen == 0) {
/* we consider a short read a failure */
errno = EPIPE;
_fetch_syserr();
return (-1);
}
if (rlen < 0) {
if (errno == EINTR && fetchRestartCalls)
continue;
@ -406,7 +414,6 @@ _fetch_getln(conn_t *conn)
char *tmp;
size_t tmpsize;
char c;
int error;
if (conn->buf == NULL) {
if ((conn->buf = malloc(MIN_BUF_SIZE)) == NULL) {
@ -420,11 +427,8 @@ _fetch_getln(conn_t *conn)
conn->buflen = 0;
do {
error = _fetch_read(conn, &c, 1);
if (error == -1)
if (_fetch_read(conn, &c, 1) == -1)
return (-1);
else if (error == 0)
break;
conn->buf[conn->buflen++] = c;
if (conn->buflen == conn->bufsize) {
tmp = conn->buf;
@ -473,6 +477,7 @@ _fetch_write(conn_t *conn, const char *buf, size_t len)
}
if (wait.tv_sec < 0) {
errno = ETIMEDOUT;
_fetch_syserr();
return (-1);
}
errno = 0;
@ -490,9 +495,12 @@ _fetch_write(conn_t *conn, const char *buf, size_t len)
else
#endif
wlen = write(conn->sd, buf, len);
if (wlen == 0)
if (wlen == 0) {
/* we consider a short write a failure */
errno = EPIPE;
_fetch_syserr();
return (-1);
}
if (wlen < 0) {
if (errno == EINTR && fetchRestartCalls)
continue;