libsqfs: bring sqfs_file_t in line with stream API

Rename the open function to sqfs_file_open, use an argument for the
return pointer and pass back and error number on failure. Also add
an inermediate function to open an sqfs_file_t using a handle, similar
to the stream API. The get_file_size function is moved to the native
wrappers and some of the implementation is cleaned up a little.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/extras/extract_one.c b/extras/extract_one.c
index 63c83f9..d0fe1b9 100644
--- a/extras/extract_one.c
+++ b/extras/extract_one.c
@@ -43,9 +43,9 @@ int main(int argc, char **argv)
 		return EXIT_FAILURE;
 	}
 
-	file = sqfs_open_file(argv[1], SQFS_FILE_OPEN_READ_ONLY);
-	if (file == NULL) {
-		perror(argv[1]);
+	ret = sqfs_file_open(&file, argv[1], SQFS_FILE_OPEN_READ_ONLY);
+	if (ret) {
+		fprintf(stderr, "%s: error opening file.\n", argv[1]);
 		return EXIT_FAILURE;
 	}