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authorDaniel Barkalow <barkalow@iabervon.org>2005-06-06 20:31:29 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-07 00:09:45 (GMT)
commit95fc75129acf14d980bdd56b9b2ee74190f81d91 (patch)
treed3a6988ffe8b9ae0b554ddb4485ffb0f1cac0dc7 /refs.h
parent451322512f2f72fe07461a8aeae0df4cfce7fda1 (diff)
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[PATCH] Operations on refs
This patch adds code to read a hash out of a specified file under {GIT_DIR}/refs/, and to write such files atomically and optionally with an compare and lock. Signed-off-by: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'refs.h')
-rw-r--r--refs.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/refs.h b/refs.h
new file mode 100644
index 0000000..60cf480
--- /dev/null
+++ b/refs.h
@@ -0,0 +1,21 @@
+#ifndef REFS_H
+#define REFS_H
+
+/** Reads the refs file specified into sha1 **/
+extern int get_ref_sha1(const char *ref, unsigned char *sha1);
+
+/** Locks ref and returns the fd to give to write_ref_sha1() if the ref
+ * has the given value currently; otherwise, returns -1.
+ **/
+extern int lock_ref_sha1(const char *ref, const unsigned char *old_sha1);
+
+/** Writes sha1 into the refs file specified, locked with the given fd. **/
+extern int write_ref_sha1(const char *ref, int fd, const unsigned char *sha1);
+
+/** Writes sha1 into the refs file specified. **/
+extern int write_ref_sha1_unlocked(const char *ref, const unsigned char *sha1);
+
+/** Returns 0 if target has the right format for a ref. **/
+extern int check_ref_format(const char *target);
+
+#endif /* REFS_H */