diff options
Diffstat (limited to 'sysdeps/generic/dl-cache.c')
| -rw-r--r-- | sysdeps/generic/dl-cache.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/sysdeps/generic/dl-cache.c b/sysdeps/generic/dl-cache.c index da7d2e49dd..f14cf96da1 100644 --- a/sysdeps/generic/dl-cache.c +++ b/sysdeps/generic/dl-cache.c @@ -44,6 +44,10 @@ struct cache_file } libs[0]; }; +/* This is the starting address and the size of the mmap()ed file. */ +static struct cache_file *cache; +static size_t cachesize; + /* This is the cache ID we expect. Normally it is 3 for glibc linked binaries. */ int _dl_correct_cache_id = 3; @@ -54,8 +58,6 @@ int _dl_correct_cache_id = 3; const char * _dl_load_cache_lookup (const char *name) { - static struct cache_file *cache; - static size_t cachesize; unsigned int i; const char *best; @@ -114,3 +116,19 @@ _dl_load_cache_lookup (const char *name) return best; } + +#ifndef MAP_COPY +/* If the system does not support MAP_COPY we cannot leave the file open + all the time since this would create problems when the file is replaced. + Therefore we provide this function to close the file and open it again + once needed. */ +void +_dl_unload_cache (void) +{ + if (cache != NULL && cache != (struct cache_file *) -1) + { + __munmap (cache, cachesize); + cache = NULL; + } +} +#endif |