X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Frun-program.c;h=6b7575c6c7536af7959d3ffbf34441e0e1c6d503;hb=53f576d7d796e37a9c51c3c3296341458f046c44;hp=feb8d8d0d4cac74423d106887b06c141f584f57a;hpb=c03ebb54770cfa613d4b706a80e5be231786a5d0;p=sbcl.git

diff --git a/src/runtime/run-program.c b/src/runtime/run-program.c
index feb8d8d..6b7575c 100644
--- 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 stdin, int stdout, int stderr,
+          int search, char *envp[], char *pty_name, int wait)
 {
     int pid = fork();
     int fd;
@@ -67,6 +68,8 @@ int spawn(char *program, char *argv[], char *envp[], char *pty_name,
     /* Put us in our own process group. */
 #if defined(hpux)
     setsid();
+#elif defined(LISP_FEATURE_DARWIN)
+    setpgid(0, getpid());
 #elif defined(SVR4) || defined(__linux__) || defined(__osf__)
     setpgrp();
 #else
@@ -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 ) {
@@ -181,22 +187,31 @@ HANDLE spawn (
     } else {
         wait_mode = P_WAIT;
     }
-    
+
     /* 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 );
 }