diff options
Diffstat (limited to 'cpukit/libcsupport/src/readlink.c')
-rw-r--r-- | cpukit/libcsupport/src/readlink.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/cpukit/libcsupport/src/readlink.c b/cpukit/libcsupport/src/readlink.c index 22de51e88f..2f7423f69e 100644 --- a/cpukit/libcsupport/src/readlink.c +++ b/cpukit/libcsupport/src/readlink.c @@ -23,21 +23,35 @@ int readlink( rtems_filesystem_location_info_t loc; int result; + if (!buf) + set_errno_and_return_minus_one( EFAULT ); + result = rtems_filesystem_evaluate_path( pathname, 0, &loc, FALSE ); if ( result != 0 ) return -1; - if (!buf) - set_errno_and_return_minus_one( EFAULT ); - - if ( !loc.ops->node_type ) + if ( !loc.ops->node_type ){ + if ( loc.ops->freenod ) + (*loc.ops->freenod)( &loc ); set_errno_and_return_minus_one( ENOTSUP ); + } - if ( (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_SYM_LINK ) + if ( (*loc.ops->node_type)( &loc ) != RTEMS_FILESYSTEM_SYM_LINK ){ + if ( loc.ops->freenod ) + (*loc.ops->freenod)( &loc ); set_errno_and_return_minus_one( EINVAL ); + } - if ( !loc.ops->readlink ) + if ( !loc.ops->readlink ){ + if ( loc.ops->freenod ) + (*loc.ops->freenod)( &loc ); set_errno_and_return_minus_one( ENOTSUP ); + } - return (*loc.ops->readlink)( &loc, buf, bufsize ); + result = (*loc.ops->readlink)( &loc, buf, bufsize ); + + if ( loc.ops->freenod ) + (*loc.ops->freenod)( &loc ); + + return result; } |