1 files changed, 133 insertions, 0 deletions
diff --git a/lib/cpio.h b/lib/cpio.h
new file mode 100644
index 0000000..9453184
--- /dev/null
+++ b/lib/cpio.h
@@ -0,0 +1,133 @@
+#ifndef H_CPIO
+#define H_CPIO
+
+/** \ingroup payload
+ * \file lib/cpio.h
+ *  Structures used to handle cpio payloads within rpm packages.
+ *
+ *  @warning Rpm's cpio implementation may be different than standard cpio.
+ *  The implementation is pretty close, but it has some behaviors which are
+ *  more to RPM's liking. I tried to document the differing behavior in cpio.c,
+ *  but I may have missed some (ewt).
+ *
+ */
+
+#include "lib/fsm.h"
+
+/** \ingroup payload
+ * @note CPIO_CHECK_ERRNO bit is set only if errno is valid.
+ */
+#define CPIOERR_CHECK_ERRNO	0x00008000
+
+/** \ingroup payload
+ */
+enum cpioErrorReturns {
+	CPIOERR_BAD_MAGIC	= 2,
+	CPIOERR_BAD_HEADER	= 3,
+	CPIOERR_OPEN_FAILED	= 4	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_CHMOD_FAILED	= 5	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_CHOWN_FAILED	= 6	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_WRITE_FAILED	= 7	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_UTIME_FAILED	= 8	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_UNLINK_FAILED	= 9	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_RENAME_FAILED	= 10	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_SYMLINK_FAILED	= 11	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_STAT_FAILED	= 12	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_LSTAT_FAILED	= 13	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_MKDIR_FAILED	= 14	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_RMDIR_FAILED	= 15	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_MKNOD_FAILED	= 16	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_MKFIFO_FAILED	= 17	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_LINK_FAILED	= 18	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_READLINK_FAILED	= 19	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_READ_FAILED	= 20	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_COPY_FAILED	= 21	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_LSETFCON_FAILED	= 22	| CPIOERR_CHECK_ERRNO,
+	CPIOERR_HDR_SIZE	= 23,
+	CPIOERR_HDR_TRAILER	= 24,
+	CPIOERR_UNKNOWN_FILETYPE= 25,
+	CPIOERR_MISSING_HARDLINK= 26,
+	CPIOERR_DIGEST_MISMATCH	= 27,
+	CPIOERR_INTERNAL	= 28,
+	CPIOERR_UNMAPPED_FILE	= 29,
+	CPIOERR_ENOENT		= 30,
+	CPIOERR_ENOTEMPTY	= 31,
+	CPIOERR_SETCAP_FAILED	= 32	| CPIOERR_CHECK_ERRNO,
+};
+
+/*
+ * Size limit for individual files in "new ascii format" cpio archives.
+ * The max size of the entire archive is unlimited from cpio POV,
+ * but subject to filesystem limitations.
+ */
+#define CPIO_FILESIZE_MAX UINT32_MAX
+
+#define CPIO_NEWC_MAGIC	"070701"
+#define CPIO_CRC_MAGIC	"070702"
+#define CPIO_TRAILER	"TRAILER!!!"
+
+/** \ingroup payload
+ * Cpio archive header information.
+ */
+struct cpioCrcPhysicalHeader {
+    char magic[6];
+    char inode[8];
+    char mode[8];
+    char uid[8];
+    char gid[8];
+    char nlink[8];
+    char mtime[8];
+    char filesize[8];
+    char devMajor[8];
+    char devMinor[8];
+    char rdevMajor[8];
+    char rdevMinor[8];
+    char namesize[8];
+    char checksum[8];			/* ignored !! */
+};
+
+#define	PHYS_HDR_SIZE	110		/* Don't depend on sizeof(struct) */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Write cpio trailer.
+ * @retval fsm		file path and stat info
+ * @return		0 on success
+ */
+RPM_GNUC_INTERNAL
+int cpioTrailerWrite(FSM_t fsm);
+
+/**
+ * Write cpio header.
+ * @retval fsm		file path and stat info
+ * @param st
+ * @return		0 on success
+ */
+RPM_GNUC_INTERNAL
+int cpioHeaderWrite(FSM_t fsm, struct stat * st);
+
+/**
+ * Read cpio header.
+ * @retval fsm		file path and stat info
+ * @retval st
+ * @return		0 on success
+ */
+RPM_GNUC_INTERNAL
+int cpioHeaderRead(FSM_t fsm, struct stat * st);
+
+/** \ingroup payload
+ * Return formatted error message on payload handling failure.
+ * @param rc		error code
+ * @return		formatted error string
+ */
+/* XXX should be RPM_GNUC_INTERNAL too but build/pack.c uses */
+const char * cpioStrerror(int rc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* H_CPIO */