diff options
Diffstat (limited to '')
-rw-r--r-- | cpukit/libcsupport/src/unlink.c | 48 |
1 files changed, 37 insertions, 11 deletions
diff --git a/cpukit/libcsupport/src/unlink.c b/cpukit/libcsupport/src/unlink.c index a441d4d6ec..43b1db5705 100644 --- a/cpukit/libcsupport/src/unlink.c +++ b/cpukit/libcsupport/src/unlink.c @@ -24,41 +24,67 @@ int unlink( const char *path ) { + int parentpathlen; + const char *name; + rtems_filesystem_location_info_t parentloc; rtems_filesystem_location_info_t loc; + int i; int result; /* - * Get the node to be unlinked. + * Get the node to be unlinked. Find the parent path first. */ - - result = rtems_filesystem_evaluate_path( path, 0, &loc, false ); - if ( result != 0 ) - return -1; - - result = rtems_filesystem_evaluate_parent(RTEMS_LIBIO_PERMS_WRITE, &loc ); - if (result != 0 && errno != ENOTSUP) { - rtems_filesystem_freenode( &loc ); + + parentpathlen = rtems_filesystem_dirname ( path ); + + if ( parentpathlen == 0 ) + rtems_filesystem_get_start_loc( path, &i, &parentloc ); + else { + result = rtems_filesystem_evaluate_path( path, parentpathlen, + RTEMS_LIBIO_PERMS_WRITE, + &parentloc, + false ); + if ( result != 0 ) + return -1; + } + + /* + * Start from the parent to find the node that should be under it. + */ + + loc = parentloc; + name = path + parentpathlen; + name += rtems_filesystem_prefix_separators( name, strlen( name ) ); + + result = rtems_filesystem_evaluate_relative_path( name , strlen( name ), + 0, &loc, false ); + if ( result != 0 ) { + rtems_filesystem_freenode( &parentloc ); return -1; } - + if ( !loc.ops->node_type_h ) { rtems_filesystem_freenode( &loc ); + rtems_filesystem_freenode( &parentloc ); rtems_set_errno_and_return_minus_one( ENOTSUP ); } if ( (*loc.ops->node_type_h)( &loc ) == RTEMS_FILESYSTEM_DIRECTORY ) { rtems_filesystem_freenode( &loc ); + rtems_filesystem_freenode( &parentloc ); rtems_set_errno_and_return_minus_one( EISDIR ); } if ( !loc.ops->unlink_h ) { rtems_filesystem_freenode( &loc ); + rtems_filesystem_freenode( &parentloc ); rtems_set_errno_and_return_minus_one( ENOTSUP ); } - result = (*loc.ops->unlink_h)( &loc ); + result = (*loc.ops->unlink_h)( &parentloc, &loc ); rtems_filesystem_freenode( &loc ); + rtems_filesystem_freenode( &parentloc ); return result; } |