attr: drop misguided defensive coding

[git.git] / run-command.c

diff --git a/run-command.c b/run-command.c
index 8619c769a93c48e724957c019af5765ebee6af9f..a2796c4caecc0fae6ea1a95b2c965b92d98f8a31 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -72,23 +72,19 @@ static void notify_parent(void)
         * know, so failures like ENOENT can be handled right away; but
         * otherwise, finish_command will still report the error.
         */
-       if (write(child_notifier, "", 1))
-               ; /* yes, dear gcc -D_FORTIFY_SOURCE, there was an error. */
+       xwrite(child_notifier, "", 1);
 }
 
 static NORETURN void die_child(const char *err, va_list params)
 {
-       char msg[4096];
-       int len = vsnprintf(msg, sizeof(msg), err, params);
-       if (len > sizeof(msg))
-               len = sizeof(msg);
-
-       if (write(child_err, "fatal: ", 7) ||
-           write(child_err, msg, len) ||
-           write(child_err, "\n", 1))
-               ; /* yes, gcc -D_FORTIFY_SOURCE, we know there was an error. */
+       vwritef(child_err, "fatal: ", err, params);
        exit(128);
 }
+
+static void error_child(const char *err, va_list params)
+{
+       vwritef(child_err, "error: ", err, params);
+}
 #endif
 
 static inline void set_cloexec(int fd)
@@ -129,9 +125,6 @@ static int wait_or_whine(pid_t pid, const char *argv0, int silent_exec_failure)
                if (code == 127) {
                        code = -1;
                        failed_errno = ENOENT;
-                       if (!silent_exec_failure)
-                               error("cannot run %s: %s", argv0,
-                                       strerror(ENOENT));
                }
        } else {
                error("waitpid is confused (%s)", argv0);
@@ -219,6 +212,7 @@ fail_pipe:
                        set_cloexec(child_err);
                }
                set_die_routine(die_child);
+               set_error_routine(error_child);
 
                close(notify_pipe[0]);
                set_cloexec(notify_pipe[1]);
@@ -285,14 +279,14 @@ fail_pipe:
                } else {
                        execvp(cmd->argv[0], (char *const*) cmd->argv);
                }
-               /*
-                * Do not check for cmd->silent_exec_failure; the parent
-                * process will check it when it sees this exit code.
-                */
-               if (errno == ENOENT)
+               if (errno == ENOENT) {
+                       if (!cmd->silent_exec_failure)
+                               error("cannot run %s: %s", cmd->argv[0],
+                                       strerror(ENOENT));
                        exit(127);
-               else
+               } else {
                        die_errno("cannot exec '%s'", cmd->argv[0]);
+               }
        }
        if (cmd->pid < 0)
                error("cannot fork() for %s: %s", cmd->argv[0],