diff options
| -rw-r--r-- | libbb/xfuncs_printf.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c index e9222f690..1b11caf6b 100644 --- a/libbb/xfuncs_printf.c +++ b/libbb/xfuncs_printf.c @@ -235,8 +235,16 @@ void FAST_FUNC xwrite(int fd, const void *buf, size_t count) { if (count) { ssize_t size = full_write(fd, buf, count); - if ((size_t)size != count) - bb_error_msg_and_die("short write"); + if ((size_t)size != count) { + /* + * Two cases: write error immediately; + * or some writes succeeded, then we hit an error. + * In either case, errno is set. + */ + bb_perror_msg_and_die( + size >= 0 ? "short write" : "write error" + ); + } } } void FAST_FUNC xwrite_str(int fd, const char *str) |