home *** CD-ROM | disk | FTP | other *** search
- /*
- * Mig_GetPdevName.c --
- *
- * This file contains the Mig_GetPdevName procedure, which
- * returns the string corresponding to the pseudo-device
- * used for either the global server or the local host.
- *
- * Copyright 1990 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/mig/RCS/Mig_GetPdevName.c,v 2.0 90/03/10 13:13:02 douglis Stable $ SPRITE (Berkeley)";
- #endif not lint
-
- #include <fs.h>
- #include <stdio.h>
- #include <mig.h>
-
- extern char *strcpy();
-
- /*
- * Define the pseudo-devices used to communicate with the local
- * and global migration daemons. LOCAL_PDEV is used to form
- * a string based on the hostname.
- */
- #ifndef GLOBAL_PDEV
- #define GLOBAL_PDEV "/sprite/admin/migd/pdev"
- #endif
-
- #ifndef LOCAL_PDEV
- #define LOCAL_PDEV "/hosts/%s/migd.pdev"
- #endif
-
- static char *globalPdev = GLOBAL_PDEV;
- static char *localPdev = NULL;
-
-
- /*
- *----------------------------------------------------------------------
- *
- * Mig_GetPdevName --
- *
- * Return the name of the specified pseudo-device. If global
- * is non-zero, then return the name of the global pdev, else
- * the one for this host.
- *
- * Results:
- * A pointer to the name is returned. If an error is returned
- * when getting the host name, NULL is returned.
- *
- * Side effects:
- * Memory is allocated to hold the file name.
- *
- *----------------------------------------------------------------------
- */
- char *
- Mig_GetPdevName(global)
- int global; /* Whether to return the global pdev name. */
- {
- char hostName[FS_MAX_NAME_LENGTH];
- char fileName[FS_MAX_NAME_LENGTH];
- int status;
- extern char *malloc();
-
- if (global) {
- return(globalPdev);
- }
-
- if (!localPdev) {
- status = gethostname(hostName, FS_MAX_NAME_LENGTH);
- if (status != 0) {
- return((char *) NULL);
- }
- (void) sprintf(fileName, LOCAL_PDEV, hostName);
- localPdev = malloc((unsigned) (strlen(fileName) + 1));
- if (localPdev == (char *) NULL) {
- return(localPdev);
- }
- (void) strcpy(localPdev, fileName);
- }
- return(localPdev);
- }
-