From 1396a2142e39b1a23ba62328cb0cf1bd132a351d Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Sun, 28 May 2023 19:19:15 -0400
Subject: opk/write: Simplify goto blocks

Also fixes "warning: label ‘out0’ defined but not used".
---
diff --git a/src/opk/write.c b/src/opk/write.c
index c3a88c8..1561e38 100644
--- a/src/opk/write.c
+++ b/src/opk/write.c
@@ -85,7 +85,6 @@ static int
 _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 		struct opkg_opk_dirent *dir, size_t path_off)
 {
-	int                      ret;
 	char                    *child_path;
 	int                      children_n;
 	struct dirent          **children;
@@ -106,8 +105,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 	size_t                   size;
 	size_t                   num_read;
 	size_t                   tot_read;
-
-	ret = OPKG_OPK_OK;
+	int                      ret;
 
 	child_path = opk->path_virt + path_off;
 	children_n = scandir(opk->path_real, &children, _opkg_opk_opk_write_filter,
@@ -121,8 +119,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 				fprintf(stderr, "Error: File name \"%s\" too "
 						"long",
 						children[children_i]->d_name);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			child_path[name_i] =
 				children[children_i]->d_name[name_i];
@@ -131,8 +128,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 		if (lstat(opk->path_real, &st) != 0) {
 			fprintf(stderr, _("Error: Failed to stat \"%s\"\n"),
 					opk->path_real);
-			ret = OPKG_OPK_ERROR;
-			goto out1;
+			goto err;
 		}
 		/* TODO: Ownership override */
 		uid = st.st_uid;
@@ -143,8 +139,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 			if (path_off + name_i + 2 == OPKG_OPK_USTAR_NAME_SIZE) {
 				fprintf(stderr, "Error: File name \"%s\" too "
 						"long", child_path);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			child_path[name_i] = '/';
 			child_path[++name_i] = '\0';
@@ -155,25 +150,21 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 					OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			if (_opkg_opk_opk_write_dir_read(opk, &child,
 						path_off + name_i) !=
 					OPKG_OPK_OK) {
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else if (S_ISLNK(st.st_mode)) {
 			link_len = readlink(opk->path_real, link,
 					OPKG_OPK_USTAR_LINKNAME_SIZE);
 			if (link_len < 0) {
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			if (link_len == OPKG_OPK_USTAR_LINKNAME_SIZE) {
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			link[link_len] = '\0';
 			if (opkg_opk_ustar_write_header(opk->inner_ustar,
@@ -183,8 +174,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 					OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else if (S_ISCHR(st.st_mode)) {
 			if (opkg_opk_ustar_write_header(opk->inner_ustar,
@@ -196,8 +186,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 					OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else if (S_ISBLK(st.st_mode)) {
 			if (opkg_opk_ustar_write_header(opk->inner_ustar,
@@ -209,8 +198,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 					OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else if (S_ISFIFO(st.st_mode)) {
 			if (opkg_opk_ustar_write_header(opk->inner_ustar,
@@ -220,8 +208,7 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 					OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else if (S_ISREG(st.st_mode)) {
 			if (opkg_opk_ustar_write_header(opk->inner_ustar,
@@ -231,16 +218,14 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 						NULL) != OPKG_OPK_OK) {
 				fputs(_("Error: Failed to write header\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			fp = fopen(opk->path_real, "rb");
 			if (fp == NULL) {
 				fprintf(stderr, _("Error: Failed to open file "
 							"\"%s\"\n"),
 						opk->path_real);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			opkg_opk_ustar_get_buffer(opk->inner_ustar,
 					&buffer, &size);
@@ -253,37 +238,36 @@ _opkg_opk_opk_write_dir_read(struct opkg_opk_opk *opk,
 			if (ferror(fp) != 0) {
 				fputs(_("Error: Error reading file\n"), stderr);
 				fclose(fp);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			if (fclose(fp) != 0) {
 				fputs(_("Error: Failed to close file\n"),
 						stderr);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 			if ((uintmax_t) tot_read != (uintmax_t) st.st_size) {
 				fprintf(stderr, _("Error: Expected %jd bytes "
 							"but read %zu\n"),
 							(intmax_t) st.st_size,
 							num_read);
-				ret = OPKG_OPK_ERROR;
-				goto out1;
+				goto err;
 			}
 		} else {
 			fprintf(stderr, _("Error: Unknown type of file \"%s\"\n"
 						), opk->path_real);
-			ret = OPKG_OPK_ERROR;
-			goto out1;
+			goto err;
 		}
 	}
 
- out1:
+	ret = OPKG_OPK_OK;
+	goto out;
+ err:
+	ret = OPKG_OPK_ERROR;
+ out:
 	for (children_i = 0; children_i < children_n; ++children_i) {
 		free(children[children_i]);
 	}
 	free(children);
- out0:
 	return ret;
 }
 
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