diff options
Diffstat (limited to 'libdiskfs')
| -rw-r--r-- | libdiskfs/diskfs.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/libdiskfs/diskfs.h b/libdiskfs/diskfs.h index a8a8b9ce..53a65b52 100644 --- a/libdiskfs/diskfs.h +++ b/libdiskfs/diskfs.h @@ -208,7 +208,8 @@ extern int diskfs_minor_version; extern int diskfs_edit_version; /* The user may define this variable. This should be nonzero iff the - filesystem format supports shortcutting symlink translation. */ + filesystem format supports shortcutting symlink translation. + See also diskfs_create_symlink_hook below. */ int diskfs_shortcut_symlink; /* The user may define this variable. This should be nonzero iff the @@ -342,7 +343,9 @@ error_t diskfs_set_translator (struct node *np, char *name, u_int namelen, /* The user must define this function. Truncate locked node NP to be SIZE bytes long. (If NP is already less than or equal to SIZE bytes - long, do nothing.) */ + long, do nothing.) If this is a symlink (and diskfs_shortcut_symlink + is set) then this should clear the symlink, even if + diskfs_create_symlink_hook stores the link target elsewhere. */ error_t diskfs_truncate (struct node *np, off_t size); /* The user must define this function. Grow the disk allocated to locked node @@ -436,6 +439,12 @@ void diskfs_init_completed (); /* It is assumed that the user will use the Hurd pager library; if not you need to redefine ports_demuxer and diskfs_do_seqnos_mach_notify_no_senders. */ + +/* If this function is nonzero (and diskfs_shortcut_symlink is set) it + is called to set a symlink. If it returns EINVAL or isn't set, + then the normal method (writing the contents into the file data) is + used. If it returns any other error, it is returned to the user. */ +error_t (*diskfs_create_symlink_hook)(struct node *np, char *target); /* The library exports the following functions for general use */ |