wait4pid: if passed with pid < 0, do not set errno - it is already set by exec!

1 files changed, 0 insertions, 33 deletions

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index c18a1d998..0cf2005ac 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -193,39 +193,6 @@ void xfflush_stdout(void)
         }
 }
 
-// Wait for the specified child PID to exit, returning child's error return.
-int wait4pid(int pid)
-{
-        int status;
-
-        if (pid <= 0) {
-                errno = ECHILD;
-                return -1;
-        }
-        if (waitpid(pid, &status, 0) == -1)
-                return -1;
-        if (WIFEXITED(status))
-                return WEXITSTATUS(status);
-        if (WIFSIGNALED(status))
-                return WTERMSIG(status) + 10000;
-        return 0;
-}
-
-int wait_nohang(int *wstat)
-{
-        return waitpid(-1, wstat, WNOHANG);
-}
-
-int wait_pid(int *wstat, int pid)
-{
-        int r;
-
-        do
-                r = waitpid(pid, wstat, 0);
-        while ((r == -1) && (errno == EINTR));
-        return r;
-}
-
 void sig_block(int sig)
 {
         sigset_t ss;