apk: use *at instead of chdir+normal file syscall

this way we never change cwd, and relative filenames are always
parsed consistently. this also helps filename construction in many
places. this patch also changes '--root' to override location of
all configuration to be in the new root. previously it depended
on the file which one was used.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/apk.c b/src/apk.c
index a21427f..122f9a7 100644
--- a/src/apk.c
+++ b/src/apk.c
@@ -26,7 +26,7 @@
 
 const char *apk_root;
 struct apk_repository_url apk_repository_list;
-int apk_verbosity = 1, apk_cwd_fd, apk_wait;
+int apk_verbosity = 1, apk_wait;
 unsigned int apk_flags = 0;
 
 static struct apk_option generic_options[] = {
@@ -292,7 +292,6 @@ int main(int argc, char **argv)
 	struct apk_repository_url *repo = NULL;
 
 	umask(0);
-	apk_cwd_fd = open(".", O_RDONLY);
 	apk_root = getenv("ROOT");
 	list_init(&apk_repository_list.list);