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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-02-23 17:57:27 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-03-13 12:24:15 +0100 |
| commit | 1bdff036acddbbc63aa849741abba6581549f7b6 (patch) | |
| tree | 8cc1f06ac93045d8a7c35da41fd926c2d9e840f1 /cpukit/libfs/src/imfs/imfs_link.c | |
| parent | IMFS: Use unprotected chain operations (diff) | |
| download | rtems-1bdff036acddbbc63aa849741abba6581549f7b6.tar.bz2 | |
IMFS: Reference counting for nodes
The introduction of reference counting of nodes avoids the removal of
open nodes and potential usage of freed memory.
Diffstat (limited to 'cpukit/libfs/src/imfs/imfs_link.c')
| -rw-r--r-- | cpukit/libfs/src/imfs/imfs_link.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/cpukit/libfs/src/imfs/imfs_link.c b/cpukit/libfs/src/imfs/imfs_link.c index 130c529d75..2684dbe64f 100644 --- a/cpukit/libfs/src/imfs/imfs_link.c +++ b/cpukit/libfs/src/imfs/imfs_link.c @@ -30,12 +30,15 @@ int IMFS_link( { IMFS_types_union info; IMFS_jnode_t *new_node; + IMFS_jnode_t *target; + + target = targetloc->node_access; + info.hard_link.link_node = target; /* * Verify this node can be linked to. */ - info.hard_link.link_node = targetloc->node_access; - if ( info.hard_link.link_node->st_nlink >= LINK_MAX ) + if ( target->st_nlink >= LINK_MAX ) rtems_set_errno_and_return_minus_one( EMLINK ); /* @@ -56,8 +59,9 @@ int IMFS_link( /* * Increment the link count of the node being pointed to. */ - info.hard_link.link_node->st_nlink++; - IMFS_update_ctime( info.hard_link.link_node ); + target->reference_count++; + target->st_nlink++; + IMFS_update_ctime( target ); return 0; } |