diff options
Diffstat (limited to 'sys/miscfs/devfs/devfs_tree.c')
| -rw-r--r-- | sys/miscfs/devfs/devfs_tree.c | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/sys/miscfs/devfs/devfs_tree.c b/sys/miscfs/devfs/devfs_tree.c index e5b62ab82934..7e9d57e8fcc6 100644 --- a/sys/miscfs/devfs/devfs_tree.c +++ b/sys/miscfs/devfs/devfs_tree.c @@ -2,7 +2,7 @@ /* * Written by Julian Elischer (julian@DIALix.oz.au) * - * $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.3 1995/09/06 23:15:53 julian Exp $ + * $Header: /home/ncvs/src/sys/miscfs/devfs/devfs_tree.c,v 1.4 1995/09/07 06:01:33 julian Exp $ */ #include "param.h" @@ -876,20 +876,18 @@ void *dev_add(char *path, major = get_cdev_major_num(funct); by.Cdev.cdevsw = cdevsw + major; by.Cdev.dev = makedev(major, minor); - if( dev_add_name(name, dnp, NULL, DEV_CDEV, - &by,&new_dev)) - return 0; + if( dev_add_name(name, dnp, NULL, DEV_CDEV, &by,&new_dev)) + return NULL; break; case DV_BLK: major = get_bdev_major_num(funct); by.Bdev.bdevsw = bdevsw + major; by.Bdev.dev = makedev(major, minor); - if( dev_add_name(name, dnp, NULL, DEV_BDEV, - &by, &new_dev)) - return 0; + if( dev_add_name(name, dnp, NULL, DEV_BDEV, &by, &new_dev)) + return NULL; break; default: - return(0); + return NULL; } new_dev->dnp->gid = gid; new_dev->dnp->uid = uid; @@ -897,3 +895,29 @@ void *dev_add(char *path, return new_dev; } + +/***********************************************************************\ +* Add the named device entry into the given directory, and make it * +* a link to the already created device given as an arg.. * +\***********************************************************************/ +void *dev_link(char *path, char *name, void *original) +{ + devnm_p new_dev; + devnm_p orig = (devnm_p) original; + dn_p dnp; /* devnode for parent directory */ + int retval; + int major ; + union typeinfo by; + + DBPRINT(("dev_add\n")); + retval = dev_finddir(path,NULL,1,&dnp); + if (retval) return 0; + /* + * The DEV_CDEV below is not used other than it must NOT be DEV_DIR + * the correctness of original shuold be checked.. + */ + if( dev_add_name(name, dnp, orig, DEV_CDEV, NULL,&new_dev)) + return NULL; + return new_dev; +} + |