1.0.29.44: Complex float improvements

[sbcl.git] / src / runtime / run-program.c

diff --git a/src/runtime/run-program.c b/src/runtime/run-program.c
index 76f39b9..77a93d5 100644 (file)
--- a/src/runtime/run-program.c
+++ b/src/runtime/run-program.c
@@ -54,8 +54,9 @@ int set_noecho(int fd)
     return 1;
 }
 
-int spawn(char *program, char *argv[], char *envp[], char *pty_name,
-          int stdin, int stdout, int stderr)
+extern char **environ;
+int spawn(char *program, char *argv[], int sin, int sout, int serr,
+          int search, char *envp[], char *pty_name, int wait)
 {
     int pid = fork();
     int fd;
@@ -65,8 +66,10 @@ int spawn(char *program, char *argv[], char *envp[], char *pty_name,
         return pid;
 
     /* Put us in our own process group. */
-#if defined(hpux)
+#if defined(LISP_FEATURE_HPUX)
     setsid();
+#elif defined(LISP_FEATURE_DARWIN)
+    setpgid(0, getpid());
 #elif defined(SVR4) || defined(__linux__) || defined(__osf__)
     setpgrp();
 #else
@@ -79,7 +82,7 @@ int spawn(char *program, char *argv[], char *envp[], char *pty_name,
 
     /* If we are supposed to be part of some other pty, go for it. */
     if (pty_name) {
-#if !defined(hpux) && !defined(SVR4)
+#if !defined(LISP_FEATURE_HPUX) && !defined(SVR4)
         fd = open("/dev/tty", O_RDWR, 0);
         if (fd >= 0) {
             ioctl(fd, TIOCNOTTY, 0);
@@ -94,12 +97,12 @@ int spawn(char *program, char *argv[], char *envp[], char *pty_name,
         close(fd);
     } else{
     /* Set up stdin, stdout, and stderr */
-    if (stdin >= 0)
-        dup2(stdin, 0);
-    if (stdout >= 0)
-        dup2(stdout, 1);
-    if (stderr >= 0)
-        dup2(stderr, 2);
+    if (sin >= 0)
+        dup2(sin, 0);
+    if (sout >= 0)
+        dup2(sout, 1);
+    if (serr >= 0)
+        dup2(serr, 2);
     }
     /* Close all other fds. */
 #ifdef SVR4
@@ -110,16 +113,14 @@ int spawn(char *program, char *argv[], char *envp[], char *pty_name,
         close(fd);
 #endif
 
+    environ = envp;
     /* Exec the program. */
-    execve(program, argv, envp);
+    if (search)
+      execvp(program, argv);
+    else
+      execv(program, argv);
 
-    /* It didn't work, so try /bin/sh. */
-    argv[0] = program;
-    argv[-1] = "sh";
-    execve("/bin/sh", argv-1, envp);
-
-    /* The exec didn't work, flame out. */
-    exit(1);
+    exit (1);
 }
 #else  /* !LISP_FEATURE_WIN32 */
 
@@ -147,33 +148,38 @@ HANDLE spawn (
     int in,
     int out,
     int err,
+    int search,
+    char *envp,
+    char *ptyname,
     int wait
     )
 {
-    int fdOut, fdIn, fdErr, fdInPipe[2], fdOutPipe[2], fdErrPipe[2], wait_mode;
+    int stdout_backup, stdin_backup, stderr_backup, wait_mode;
     HANDLE hProcess;
-
-    /* Make pipes to be passed to the spawned process as in/out/err */
-    if ( _pipe ( fdOutPipe, 512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
-    if ( _pipe ( fdInPipe,  512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
-    if ( _pipe ( fdErrPipe, 512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
-
-    /* Duplicate and save original in/out/err handles */
-    fdOut = _dup ( out );
-    fdIn  = _dup ( in );
-    fdErr = _dup ( err );
-
-    /* Duplicate write end of new pipes to current out/err handles,
-     * read to in */
-    if ( _dup2 ( fdOutPipe[WRITE_HANDLE], out ) != 0 ) return (HANDLE)-1;
-    if ( _dup2 ( fdInPipe[READ_HANDLE],   in  ) != 0 ) return (HANDLE)-1;
-    if ( _dup2 ( fdErrPipe[WRITE_HANDLE], err ) != 0 ) return (HANDLE)-1;
-
-
-    /* Close the duplicated handles to the new pipes */
-    close ( fdOutPipe[WRITE_HANDLE] );
-    close ( fdInPipe[READ_HANDLE] );
-    close ( fdErrPipe[WRITE_HANDLE] );
+    HANDLE hReturn;
+
+    /* Duplicate and save the original stdin/out/err handles. */
+    stdout_backup = _dup (  _fileno ( stdout ) );
+    stdin_backup  = _dup (  _fileno ( stdin  ) );
+    stderr_backup = _dup (  _fileno ( stderr ) );
+
+    /* If we are not using stdin/out/err
+     * then duplicate the new pipes to current stdin/out/err handles.
+     *
+     * Default std fds are used if in, out or err parameters
+     * are -1. */
+
+    hReturn = (HANDLE)-1;
+    hProcess = (HANDLE)-1;
+    if ( ( out >= 0 ) && ( out != _fileno ( stdout ) ) ) {
+        if ( _dup2 ( out, _fileno ( stdout ) ) != 0 ) goto error_exit;
+    }
+    if ( ( in >= 0 ) && ( in != _fileno ( stdin ) ) ) {
+        if ( _dup2 ( in,  _fileno ( stdin )  ) != 0 ) goto error_exit_out;
+    }
+    if ( ( err >= 0 ) && ( err != _fileno ( stderr ) ) ) {
+        if ( _dup2 ( err, _fileno ( stderr ) ) != 0 ) goto error_exit_in;
+    }
 
     /* Set the wait mode. */
     if ( 0 == wait ) {
@@ -183,20 +189,29 @@ HANDLE spawn (
     }
 
     /* Spawn process given on the command line*/
-    hProcess = (HANDLE) spawnvp ( wait_mode, program, argv );
+    if (search)
+        hProcess = (HANDLE) spawnvp ( wait_mode, program, argv );
+    else
+        hProcess = (HANDLE) spawnv ( wait_mode, program, argv );
 
     /* Now that the process is launched, replace the original
-     * in/out/err handles */
-    if ( _dup2 ( fdOut, out ) != 0 ) return (HANDLE)-1;
-    if ( _dup2 ( fdIn,  in )  != 0 ) return (HANDLE)-1;
-    if ( _dup2 ( fdErr, err ) != 0 ) return (HANDLE)-1;
+     * in/out/err handles and close the backups. */
+
+    if ( _dup2 ( stderr_backup, _fileno ( stderr ) ) != 0 ) goto error_exit;
+ error_exit_in:
+    if ( _dup2 ( stdin_backup,  _fileno ( stdin )  ) != 0 ) goto error_exit;
+ error_exit_out:
+    if ( _dup2 ( stdout_backup, _fileno ( stdout ) ) != 0 ) goto error_exit;
+
+    hReturn = hProcess;
+
+ error_exit:
+    close ( stdout_backup );
+    close ( stdin_backup  );
+    close ( stderr_backup );
 
-    /* Close duplicates */
-    close(fdOut);
-    close(fdIn);
-    close(fdErr);
+    return hReturn;
 
-    return ( hProcess );
 }