From d385653e04a9455a5c9e34cc9a63c7de375981d7 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Apr 15 2021 09:44:27 +0000
Subject: library: replace all uses of unlink() with unlinkat().


---

diff --git a/src/driver/slbt_driver_ctx.c b/src/driver/slbt_driver_ctx.c
index be70ad5..13efa37 100644
--- a/src/driver/slbt_driver_ctx.c
+++ b/src/driver/slbt_driver_ctx.c
@@ -658,6 +658,7 @@ static int slbt_init_host_params(
 	struct slbt_host_params *	host,
 	struct slbt_host_params *	cfgmeta)
 {
+	int		fdcwd;
 	int		arprobe;
 	int		arfd;
 	int		ecode;
@@ -873,9 +874,12 @@ static int slbt_init_host_params(
 				cfgmeta->ar = cfgnative;
 			}
 
+			/* fdcwd */
+			fdcwd = slbt_driver_fdcwd(dctx);
+
 			/* clean up */
 			if (arfd >= 0) {
-				unlink(archivename);
+				unlinkat(fdcwd,archivename,0);
 				close(arfd);
 			}
 		}
diff --git a/src/helper/slbt_archive_import.c b/src/helper/slbt_archive_import.c
index 444c48d..071654f 100644
--- a/src/helper/slbt_archive_import.c
+++ b/src/helper/slbt_archive_import.c
@@ -149,10 +149,10 @@ int slbt_archive_import(
 		0);
 
 	if (dst == mridst)
-		unlink(dst);
+		unlinkat(fdcwd,dst,0);
 
 	if (src == mrisrc)
-		unlink(src);
+		unlinkat(fdcwd,src,0);
 
 	return (rpid == pid) && (ectx->exitcode == 0)
 		? 0 : SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_ARCHIVE_IMPORT);
diff --git a/src/logic/slbt_exec_compile.c b/src/logic/slbt_exec_compile.c
index 7a934ab..2a407da 100644
--- a/src/logic/slbt_exec_compile.c
+++ b/src/logic/slbt_exec_compile.c
@@ -21,10 +21,15 @@ static int slbt_exec_compile_remove_file(
 	struct slbt_exec_ctx *		ectx,
 	const char *			target)
 {
+	int fdcwd;
+
 	(void)ectx;
 
+	/* fdcwd */
+	fdcwd = slbt_driver_fdcwd(dctx);
+
 	/* remove target (if any) */
-	if (!(unlink(target)) || (errno == ENOENT))
+	if (!unlinkat(fdcwd,target,0) || (errno == ENOENT))
 		return 0;
 
 	return SLBT_SYSTEM_ERROR(dctx,0);
diff --git a/src/logic/slbt_exec_link.c b/src/logic/slbt_exec_link.c
index d83935c..0bc474d 100644
--- a/src/logic/slbt_exec_link.c
+++ b/src/logic/slbt_exec_link.c
@@ -867,10 +867,15 @@ static int slbt_exec_link_remove_file(
 	struct slbt_exec_ctx *		ectx,
 	const char *			target)
 {
+	int fdcwd;
+
 	(void)ectx;
 
+	/* fdcwd */
+	fdcwd = slbt_driver_fdcwd(dctx);
+
 	/* remove target (if any) */
-	if (!(unlink(target)) || (errno == ENOENT))
+	if (!unlinkat(fdcwd,target,0) || (errno == ENOENT))
 		return 0;
 
 	return SLBT_SYSTEM_ERROR(dctx,0);
diff --git a/src/logic/slbt_exec_uninstall.c b/src/logic/slbt_exec_uninstall.c
index b904ef7..7e1d37a 100644
--- a/src/logic/slbt_exec_uninstall.c
+++ b/src/logic/slbt_exec_uninstall.c
@@ -101,7 +101,7 @@ static int slbt_exec_uninstall_fs_entry(
 	}
 
 	/* remove file or symlink entry */
-	if (unlink(path))
+	if (unlinkat(fdcwd,path,0))
 		return SLBT_SYSTEM_ERROR(dctx,path);
 
 	/* remove empty containing directory? */