From 17cfa0cb58bcfadb08b355eb5fd511ed6829ee5d Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Mon, 30 Jun 2025 22:04:01 +0000
Subject:  Refactor _at functions, add symlink_at

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/libunixonacid/stat_at.c | 61 ++++++++++++++++++++++-----------------------
 1 file changed, 30 insertions(+), 31 deletions(-)

(limited to 'src/libunixonacid/stat_at.c')

diff --git a/src/libunixonacid/stat_at.c b/src/libunixonacid/stat_at.c
index e4040d5..57aa8dd 100644
--- a/src/libunixonacid/stat_at.c
+++ b/src/libunixonacid/stat_at.c
@@ -8,10 +8,11 @@
 #define _ATFILE_SOURCE
 #endif
 
+#include <skalibs/bsdsnowflake.h>
 #include <skalibs/nonposix.h>
 
-#include <sys/stat.h>
 
+#include <skalibs/stat.h>
 #include <skalibs/fcntl.h>
 #include <skalibs/unix-transactional.h>
 
@@ -27,52 +28,50 @@ int lstat_at (int dirfd, char const *file, struct stat *st)
 
 #else
 
- /* OpenBSD plz. lstat() is POSIX. */
+#include <skalibs/bsdsnowflake.h>
 #include <skalibs/nonposix.h>
 
-#include <sys/stat.h>
 #include <errno.h>
 
+#include <skalibs/stat.h>
 #include <skalibs/fcntl.h>
-#include <skalibs/djbunix.h>
 #include <skalibs/unix-transactional.h>
+#include "at-internal.h"
 
-static int fstat_at (int dirfd, char const *file, struct stat *st, int (*dostat)(char const *, struct stat *))
+struct stat_s
 {
-  int r ;
-  int fdhere = open_read(".") ;
-  if (fdhere < 0) return -1 ;
-  if (fd_chdir(dirfd) < 0)
-  {
-    fd_close(fdhere) ;
-    return -1 ;
-  }
-  r = (*dostat)(file, st) ;
-  if (r < 0)
-  {
-    int e = errno ;
-    fd_chdir(fdhere) ;
-    fd_close(fdhere) ;
-    errno = e ;
-    return -1 ;
-  }
-  if (fd_chdir(fdhere) < 0)
-  {
-    fd_close(fdhere) ;
-    return -1 ;
-  }
-  fd_close(fdhere) ;
-  return r ;
+  char const *file ;
+  struct stat *st ;
+} ;
+
+static int do_stat (void *p)
+{
+  struct stat_s *b = p ;
+  return stat(b->file, b->st) ;
+}
+
+static int do_lstat (void *p)
+{
+  struct stat_s *b = p ;
+  return lstat(b->file, b->st) ;
+}
+
+static void cancel_stat (int r, void *p)
+{
+  (void)r ;
+  (void)p ;
 }
 
 int stat_at (int dirfd, char const *file, struct stat *st)
 {
-  return fstat_at(dirfd, file, st, &stat) ;
+  struct stat_s args = { .file = file, .st = st } ;
+  return emulate_at(dirfd, &do_stat, &cancel_stat, &args) ;
 }
 
 int lstat_at (int dirfd, char const *file, struct stat *st)
 {
-  return fstat_at(dirfd, file, st, &lstat) ;
+  struct stat_s args = { .file = file, .st = st } ;
+  return emulate_at(dirfd, &do_lstat, &cancel_stat, &args) ;
 }
 
 #endif
-- 
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