diff options
| -rw-r--r-- | libbb/safe_write.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libbb/safe_write.c b/libbb/safe_write.c index 8f7628016..aad50f5e0 100644 --- a/libbb/safe_write.c +++ b/libbb/safe_write.c @@ -13,9 +13,17 @@ ssize_t FAST_FUNC safe_write(int fd, const void *buf, size_t count) { ssize_t n; - do { + for (;;) { n = write(fd, buf, count); - } while (n < 0 && errno == EINTR); + if (n >= 0 || errno != EINTR) + break; + /* Some callers set errno=0, are upset when they see EINTR. + * Returning EINTR is wrong since we retry write(), + * the "error" was transient. + */ + errno = 0; + /* repeat the write() */ + } return n; } |