[PATCH] erofs-utils: lib: fix incorrect usages of `erofs_strerror`

[Tianyi Liu]

`erofs_strerror` accepts a negative argument,
so `errno` should be negatived before passing to it.

Signed-off-by: Tianyi Liu <i.pear at outlook.com>
---
 lib/inode.c | 2 +-
 lib/tar.c   | 2 +-
 lib/xattr.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/inode.c b/lib/inode.c
index c6424c0..2a9b18c 100644
--- a/lib/inode.c
+++ b/lib/inode.c
@@ -1146,7 +1146,7 @@ static int erofs_mkfs_build_tree(struct erofs_inode *dir, struct list_head *dirs
 	_dir = opendir(dir->i_srcpath);
 	if (!_dir) {
 		erofs_err("failed to opendir at %s: %s",
-			  dir->i_srcpath, erofs_strerror(errno));
+			  dir->i_srcpath, erofs_strerror(-errno));
 		return -errno;
 	}
 
diff --git a/lib/tar.c b/lib/tar.c
index 8204939..ead74ba 100644
--- a/lib/tar.c
+++ b/lib/tar.c
@@ -106,7 +106,7 @@ int erofs_iostream_open(struct erofs_iostream *ios, int fd, int decoder)
 #ifdef HAVE_POSIX_FADVISE
 			if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL))
 				erofs_warn("failed to fadvise: %s, ignored.",
-					   erofs_strerror(errno));
+					   erofs_strerror(-errno));
 #endif
 		}
 		ios->bufsize = 16384;
diff --git a/lib/xattr.c b/lib/xattr.c
index 77c8c3a..427933f 100644
--- a/lib/xattr.c
+++ b/lib/xattr.c
@@ -698,7 +698,7 @@ static int erofs_count_all_xattrs_from_path(const char *path)
 	_dir = opendir(path);
 	if (!_dir) {
 		erofs_err("failed to opendir at %s: %s",
-			  path, erofs_strerror(errno));
+			  path, erofs_strerror(-errno));
 		return -errno;
 	}
 
-- 
2.43.0