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-rw-r--r--csum-file.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/csum-file.h b/csum-file.h
new file mode 100644
index 0000000000..c3c792f1b5
--- /dev/null
+++ b/csum-file.h
@@ -0,0 +1,21 @@
+#ifndef CSUM_FILE_H
+#define CSUM_FILE_H
+
+/* A SHA1-protected file */
+struct sha1file {
+ int fd, error;
+ unsigned int offset, namelen;
+ SHA_CTX ctx;
+ char name[PATH_MAX];
+ int do_crc;
+ uint32_t crc32;
+ unsigned char buffer[8192];
+};
+
+extern struct sha1file *sha1fd(int fd, const char *name);
+extern int sha1close(struct sha1file *, unsigned char *, int);
+extern int sha1write(struct sha1file *, void *, unsigned int);
+extern void crc32_begin(struct sha1file *);
+extern uint32_t crc32_end(struct sha1file *);
+
+#endif