Move atomic io function to a separate module

We'll be using it on various places of the SSSD. The function is in its
own file to allow using just the one piece without having to drag in the
whole util.c module.

1 files changed, 0 insertions, 38 deletions

diff --git a/src/util/util.c b/src/util/util.c
index 3a6c5d270..f1aaebc28 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -611,41 +611,3 @@ void to_sized_string(struct sized_string *out, const char *in)
     }
 }
 
-/* based on code from libssh <http://www.libssh.org> */
-ssize_t sss_atomic_io(int fd, void *buf, size_t n, bool do_read)
-{
-    char *b = buf;
-    size_t pos = 0;
-    ssize_t res;
-    struct pollfd pfd;
-
-    pfd.fd = fd;
-    pfd.events = do_read ? POLLIN : POLLOUT;
-
-    while (n > pos) {
-        if (do_read) {
-            res = read(fd, b + pos, n - pos);
-        } else {
-            res = write(fd, b + pos, n - pos);
-        }
-        switch (res) {
-        case -1:
-            if (errno == EINTR) {
-                continue;
-            }
-            if (errno == EAGAIN || errno == EWOULDBLOCK) {
-                (void) poll(&pfd, 1, -1);
-                continue;
-            }
-            return -1;
-        case 0:
-            /* read returns 0 on end-of-file */
-            errno = do_read ? 0 : EPIPE;
-            return pos;
-        default:
-            pos += (size_t) res;
-        }
-    }
-
-    return pos;
-}