getcpy.c: Move interface to own file.

[nmh] / test / runpty.c

diff --git a/test/runpty.c b/test/runpty.c
index ef5cf822f0da6932dd55401ee2e7dd542342fb6a..661d8753c343175cd5dabf7d2fc6620eacd5f4a7 100644 (file)
--- a/test/runpty.c
+++ b/test/runpty.c
@@ -1,5 +1,4 @@
-/*
- * runpty.c - Run a process under a pseudo-tty
+/* runpty.c - Run a process under a pseudo-tty

  *
  * This code is Copyright (c) 2017, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for
  *
  * This code is Copyright (c) 2017, by the authors of nmh.  See the
  * COPYRIGHT file in the root directory of the nmh distribution for


@@ -21,15 +20,15 @@
 
 #define COMMAND_TIMEOUT 30
 
 
 #define COMMAND_TIMEOUT 30
 

+static void run_command(char *argv[], int master_in, int master_out);

 static int open_master_pty(const char *desc);
 static void die(const char *fmt, ...);
 
 int
 main(int argc, char *argv[])
 {
 static int open_master_pty(const char *desc);
 static void die(const char *fmt, ...);
 
 int
 main(int argc, char *argv[])
 {

-    int master_in, master_out, slave, cc, status;
+    int master_in, master_out, cc, status;

     time_t starttime, now;
     time_t starttime, now;

-    const char *slavename;

     pid_t child;
     unsigned char readbuf[1024];
     FILE *output;
     pid_t child;
     unsigned char readbuf[1024];
     FILE *output;


@@ -43,50 +42,12 @@ main(int argc, char *argv[])
     master_in = open_master_pty("input");
     master_out = open_master_pty("output");
 
     master_in = open_master_pty("input");
     master_out = open_master_pty("output");
 

-    child = fork();
-
-    /*
-     * Start the child process if we are in the child; open the two
-     * slave pseudo-ttys and close the masters after we are done with them.
-     */
-
-    if (child == 0) {
-       if (!(slavename = ptsname(master_in))) {
-           die("Unable to determine name of slave pty: %s\n",
-                strerror(errno));
-       }
-
-       if ((slave = open(slavename, O_RDWR)) < 0) {
-           die("Unable to open slave pty \"%s\": %s\n", slavename,
-                strerror(errno));
-       }
-
-       dup2(slave, STDIN_FILENO);
-       close(slave);
-       close(master_in);
-
-       if (!(slavename = ptsname(master_out))) {
-           die("Unable to determine name of slave pty: %s\n",
-                strerror(errno));
-       }
-
-       if ((slave = open(slavename, O_RDWR | O_NOCTTY)) < 0) {
-           die("Unable to open slave pty \"%s\": %s\n", slavename,
-                strerror(errno));
-       }
-
-       dup2(slave, STDOUT_FILENO);
-       dup2(slave, STDERR_FILENO);
-       close(slave);
-       close(master_out);
-
-       execvp(argv[2], argv + 2);
-
-       die("execvp(%s) failed: %s\n", argv[2], strerror(errno));
-
-    } else if (child < 0) {
+    if ((child = fork()) == -1) {

        die("fork() failed: %s\n", strerror(errno));
     }
        die("fork() failed: %s\n", strerror(errno));
     }

+    if (child == 0) {
+        run_command(argv + 2, master_in, master_out); /* Does not return. */
+    }

 
     if (!(output = fopen(argv[1], "w"))) {
        die("Unable to open \"%s\" for output: %s\n", argv[1],
 
     if (!(output = fopen(argv[1], "w"))) {
        die("Unable to open \"%s\" for output: %s\n", argv[1],


@@ -152,6 +113,49 @@ main(int argc, char *argv[])
     exit(0);
 }
 
     exit(0);
 }
 

+static void
+run_command(char *argv[], int master_in, int master_out)
+{
+    const char *slavename;
+    int slave;
+
+    /* Open the two slave pseudo-ttys and close the masters after we are
+     * done with them. */
+
+    if (!(slavename = ptsname(master_in))) {
+        die("Unable to determine name of slave pty: %s\n",
+            strerror(errno));
+    }
+
+    if ((slave = open(slavename, O_RDWR)) == -1) {
+        die("Unable to open slave pty \"%s\": %s\n", slavename,
+            strerror(errno));
+    }
+
+    dup2(slave, STDIN_FILENO);
+    close(slave);
+    close(master_in);
+
+    if (!(slavename = ptsname(master_out))) {
+        die("Unable to determine name of slave pty: %s\n",
+            strerror(errno));
+    }
+
+    if ((slave = open(slavename, O_RDWR | O_NOCTTY)) < 0) {
+        die("Unable to open slave pty \"%s\": %s\n", slavename,
+            strerror(errno));
+    }
+
+    dup2(slave, STDOUT_FILENO);
+    dup2(slave, STDERR_FILENO);
+    close(slave);
+    close(master_out);
+
+    execvp(*argv, argv);
+
+    die("execvp(%s) failed: %s\n", *argv, strerror(errno));
+}
+

 static int
 open_master_pty(const char *desc)
 {
 static int
 open_master_pty(const char *desc)
 {