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-rw-r--r--libc/sysdeps/linux/common/poll.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/poll.c b/libc/sysdeps/linux/common/poll.c
index d1f1f1723..3d46d5bee 100644
--- a/libc/sysdeps/linux/common/poll.c
+++ b/libc/sysdeps/linux/common/poll.c
@@ -53,6 +53,7 @@ int __NC(poll)(struct pollfd *fds, nfds_t nfds, int timeout)
fd_set *rset, *wset, *xset;
struct pollfd *f;
int ready;
+ int error_num;
int maxfd = 0;
int bytes;
@@ -142,6 +143,7 @@ int __NC(poll)(struct pollfd *fds, nfds_t nfds, int timeout)
/* Reset the return value. */
ready = 0;
+ error_num = 0;
for (f = fds; f < &fds[nfds]; ++f)
if (f->fd != -1 && (f->events & (POLLIN|POLLOUT|POLLPRI))
@@ -178,8 +180,13 @@ int __NC(poll)(struct pollfd *fds, nfds_t nfds, int timeout)
++ready;
}
else if (errno == EBADF)
+ {
f->revents |= POLLNVAL;
+ error_num++;
+ }
}
+ if (ready == 0)
+ return error_num;
/* Try again. */
continue;
}