From: Marek Behún <marek.behun@nic.cz>
Date: Thu, 2 May 2019 13:28:43 +0000 (+0200)
Subject: fs: btrfs: fix btrfs methods return values on failure
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cd22e34c11e7211c54d31f854672fa26185990a5;p=project%2Fbcm63xx%2Fu-boot.git

fs: btrfs: fix btrfs methods return values on failure

The btrfs implementation methods .ls(), .size() and .read() returns 1 on
failure, but the command handlers expect values <0 on failure.

For example if given a nonexistent path, the load command currently
returns success, and hush scripting does not work.

Fix this by setting return values of these methods to -1 instead of 1 on
failure.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
---

diff --git a/fs/btrfs/btrfs.c b/fs/btrfs/btrfs.c
index 6f35854823..cb7e182742 100644
--- a/fs/btrfs/btrfs.c
+++ b/fs/btrfs/btrfs.c
@@ -119,17 +119,17 @@ int btrfs_ls(const char *path)
 
 	if (inr == -1ULL) {
 		printf("Cannot lookup path %s\n", path);
-		return 1;
+		return -1;
 	}
 
 	if (type != BTRFS_FT_DIR) {
 		printf("Not a directory: %s\n", path);
-		return 1;
+		return -1;
 	}
 
 	if (btrfs_readdir(&root, inr, readdir_callback)) {
 		printf("An error occured while listing directory %s\n", path);
-		return 1;
+		return -1;
 	}
 
 	return 0;
@@ -158,12 +158,12 @@ int btrfs_size(const char *file, loff_t *size)
 
 	if (inr == -1ULL) {
 		printf("Cannot lookup file %s\n", file);
-		return 1;
+		return -1;
 	}
 
 	if (type != BTRFS_FT_REG_FILE) {
 		printf("Not a regular file: %s\n", file);
-		return 1;
+		return -1;
 	}
 
 	*size = inode.size;
@@ -183,12 +183,12 @@ int btrfs_read(const char *file, void *buf, loff_t offset, loff_t len,
 
 	if (inr == -1ULL) {
 		printf("Cannot lookup file %s\n", file);
-		return 1;
+		return -1;
 	}
 
 	if (type != BTRFS_FT_REG_FILE) {
 		printf("Not a regular file: %s\n", file);
-		return 1;
+		return -1;
 	}
 
 	if (!len)
@@ -200,7 +200,7 @@ int btrfs_read(const char *file, void *buf, loff_t offset, loff_t len,
 	rd = btrfs_file_read(&root, inr, offset, len, buf);
 	if (rd == -1ULL) {
 		printf("An error occured while reading file %s\n", file);
-		return 1;
+		return -1;
 	}
 
 	*actread = rd;