Add a perror like function for libsquashfs error codes

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/sqfshelper/perror.c b/lib/sqfshelper/perror.c
new file mode 100644
index 0000000..6f972d8
--- /dev/null
+++ b/lib/sqfshelper/perror.c
@@ -0,0 +1,71 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * print_version.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "sqfs/error.h"
+
+#include "highlevel.h"
+
+#include <stdio.h>
+
+void sqfs_perror(const char *file, const char *action, int error_code)
+{
+	const char *errstr;
+
+	switch (error_code) {
+	case SQFS_ERROR_ALLOC:
+		errstr = "out of memory";
+		break;
+	case SQFS_ERROR_IO:
+		errstr = "I/O error";
+		break;
+	case SQFS_ERROR_COMPRESSOR:
+		errstr = "internal compressor error";
+		break;
+	case SQFS_ERROR_INTERNAL:
+		errstr = "internal error";
+		break;
+	case SQFS_ERROR_CORRUPTED:
+		errstr = "data corrupted";
+		break;
+	case SQFS_ERROR_UNSUPPORTED:
+		errstr = "unknown or not supported";
+		break;
+	case SQFS_ERROR_OVERFLOW:
+		errstr = "numeric overflow";
+		break;
+	case SQFS_ERROR_OUT_OF_BOUNDS:
+		errstr = "location out of bounds";
+		break;
+	case SFQS_ERROR_SUPER_MAGIC:
+		errstr = "wrong magic value in super block";
+		break;
+	case SFQS_ERROR_SUPER_VERSION:
+		errstr = "wrong squashfs version in super block";
+		break;
+	case SQFS_ERROR_SUPER_BLOCK_SIZE:
+		errstr = "invalid block size specified in super block";
+		break;
+	case SQFS_ERROR_NOT_DIR:
+		errstr = "target is not a directory";
+		break;
+	case SQFS_ERROR_NO_ENTRY:
+		errstr = "no such file or directory";
+		break;
+	case SQFS_ERROR_LINK_LOOP:
+		errstr = "hard link loop detected";
+		break;
+	case SQFS_ERROR_NOT_FILE:
+		errstr = "target is not a file";
+		break;
+	default:
+		errstr = "libsquashfs returned an unknown error code";
+		break;
+	}
+
+	fprintf(stderr, "%s: %s: %s.\n", file, action, errstr);
+}