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select: do not return fatal error on EINTR from poll()

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The same was done for select() in 5912da25 but poll() was missed.

Bug: https://bugs.archlinux.org/task/75201
Reported-by: Alexandre Bury (gyscos at archlinux)

Ref: https://github.com/curl/curl/issues/8921
Ref: https://github.com/curl/curl/pull/8961
Ref: https://github.com/curl/curl/commit/5912da25#r77584294

Closes https://github.com/curl/curl/pull/9091
This commit is contained in:
Thomas Weißschuh 2022-07-03 18:20:44 +02:00 committed by Jay Satiro
parent e584b1c044
commit 52e822173a
1 changed files with 5 additions and 1 deletions
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6
lib/select.c
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@ -310,8 +310,12 @@ int Curl_poll(struct pollfd ufds[], unsigned int nfds, timediff_t timeout_ms)
else
pending_ms = 0;
r = poll(ufds, nfds, pending_ms);
if(r <= 0)
if(r <= 0) {
if((r == -1) && (SOCKERRNO == EINTR))
/* make EINTR from select or poll not a "lethal" error */
r = 0;
return r;
}
for(i = 0; i < nfds; i++) {
if(ufds[i].fd == CURL_SOCKET_BAD)