* config.h.in: Add #undefs for HAVE_MKDIR and HAVE_RMDIR, for

[gnu-emacs] / src / sysdep.c

diff --git a/src/sysdep.c b/src/sysdep.c
index 8e7858f23d4fdcf871c48f617df19f0f78e8e922..d765fa79ec24535a41bc4e5b9ba953a0a67d6f58 100644 (file)
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -965,9 +965,11 @@ int term_initted;          /* 1 if outer tty status has been recorded */
 int lmode;
 #endif
 
+#ifndef F_SETOWN_BUG
 #ifdef F_SETOWN
 int old_fcntl_owner;
 #endif /* F_SETOWN */
+#endif /* F_SETOWN_BUG */
 
 /* This may also be defined in stdio,
    but if so, this does no harm,
@@ -1226,6 +1228,7 @@ init_sys_modes ()
     }
 
 #ifdef F_SETFL
+#ifndef F_SETOWN_BUG
 #ifdef F_GETOWN                /* F_SETFL does not imply existence of F_GETOWN */
   if (interrupt_input)
     {
@@ -1234,6 +1237,7 @@ init_sys_modes ()
       init_sigio ();
     }
 #endif /* F_GETOWN */
+#endif /* F_SETOWN_BUG */
 #endif /* F_SETFL */
 
 #ifdef BSD4_1
@@ -1375,6 +1379,7 @@ reset_sys_modes ()
 #endif
 
 #ifdef F_SETFL
+#ifndef F_SETOWN_BUG
 #ifdef F_SETOWN                /* F_SETFL does not imply existence of F_SETOWN */
   if (interrupt_input)
     {
@@ -1382,6 +1387,7 @@ reset_sys_modes ()
       fcntl (0, F_SETOWN, old_fcntl_owner);
     }
 #endif /* F_SETOWN */
+#endif /* F_SETOWN_BUG */
 #endif /* F_SETFL */
 #ifdef BSD4_1
   if (interrupt_input)
@@ -2573,6 +2579,19 @@ sys_write (fildes, buf, nbyte)
 
 #endif /* INTERRUPTIBLE_IO */
 \f
+#ifndef HAVE_VFORK
+
+/*
+ *     Substitute fork for vfork on USG flavors.
+ */
+
+vfork ()
+{
+  return (fork ());
+}
+
+#endif /* not HAVE_VFORK */
+\f
 #ifdef USG
 /*
  *     All of the following are for USG.
@@ -2694,8 +2713,8 @@ getwd (pathname)
 #ifndef HAVE_RENAME
 
 rename (from, to)
-     char *from;
-     char *to;
+     const char *from;
+     const char *to;
 {
   if (access (from, 0) == 0)
     {
@@ -2709,19 +2728,6 @@ rename (from, to)
 
 #endif
 
-#ifndef HAVE_VFORK
-
-/*
- *     Substitute fork for vfork on USG flavors.
- */
-
-vfork ()
-{
-  return (fork ());
-}
-
-#endif /* not HAVE_VFORK */
-
 #ifdef MISSING_UTIMES
 
 /* HPUX (among others) sets HAVE_TIMEVAL but does not implement utimes.  */
@@ -3085,6 +3091,118 @@ readdirver (dirp)
 #endif /* VMS */
 
 #endif /* NONSYSTEM_DIR_LIBRARY */
+
+\f
+/* mkdir and rmdir functions, for systems which don't have them.  */
+
+#ifndef HAVE_MKDIR
+/*
+ * Written by Robert Rother, Mariah Corporation, August 1985.
+ *
+ * If you want it, it's yours.  All I ask in return is that if you
+ * figure out how to do this in a Bourne Shell script you send me
+ * a copy.
+ *                                     sdcsvax!rmr or rmr@uscd
+ *
+ * Severely hacked over by John Gilmore to make a 4.2BSD compatible
+ * subroutine. 11Mar86; hoptoad!gnu
+ *
+ * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
+ * subroutine didn't return EEXIST.  It does now.
+ */
+
+/*
+ * Make a directory.
+ */
+int
+mkdir (dpath, dmode)
+     char *dpath;
+     int dmode;
+{
+  int cpid, status;
+  struct stat statbuf;
+
+  if (stat (dpath, &statbuf) == 0)
+    {
+      errno = EEXIST;          /* Stat worked, so it already exists */
+      return -1;
+    }
+
+  /* If stat fails for a reason other than non-existence, return error */
+  if (errno != ENOENT)
+    return -1;
+
+  switch (cpid = fork ())
+    {
+
+    case -1:                   /* Error in fork() */
+      return (-1);             /* Errno is set already */
+
+    case 0:                    /* Child process */
+      /*
+                * Cheap hack to set mode of new directory.  Since this
+                * child process is going away anyway, we zap its umask.
+                * FIXME, this won't suffice to set SUID, SGID, etc. on this
+                * directory.  Does anybody care?
+                */
+      status = umask (0);      /* Get current umask */
+      status = umask (status | (0777 & ~dmode));       /* Set for mkdir */
+      execl ("/bin/mkdir", "mkdir", dpath, (char *) 0);
+      _exit (-1);              /* Can't exec /bin/mkdir */
+
+    default:                   /* Parent process */
+      while (cpid != wait (&status));  /* Wait for kid to finish */
+    }
+
+  if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
+    {
+      errno = EIO;             /* We don't know why, but */
+      return -1;               /* /bin/mkdir failed */
+    }
+
+  return 0;
+}
+#endif /* not HAVE_MKDIR */
+
+#ifndef HAVE_RMDIR
+int
+rmdir (dpath)
+     char *dpath;
+{
+  int cpid, status;
+  struct stat statbuf;
+
+  if (stat (dpath, &statbuf) != 0)
+    {
+      /* Stat just set errno.  We don't have to */
+      return -1;
+    }
+
+  switch (cpid = fork ())
+    {
+
+    case -1:                   /* Error in fork() */
+      return (-1);             /* Errno is set already */
+
+    case 0:                    /* Child process */
+      execl ("/bin/rmdir", "rmdir", dpath, (char *) 0);
+      _exit (-1);              /* Can't exec /bin/mkdir */
+
+    default:                   /* Parent process */
+      while (cpid != wait (&status));  /* Wait for kid to finish */
+    }
+
+  if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0)
+    {
+      errno = EIO;             /* We don't know why, but */
+      return -1;               /* /bin/mkdir failed */
+    }
+
+  return 0;
+}
+#endif /* !HAVE_RMDIR */
+
+
 \f
 /* Functions for VMS */
 #ifdef VMS