file.c: move mknod, mknodat, and xmknod parsers to a separate file

* mknod.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* file.c: Move sys_mknod, sys_mknodat, sys_xmknod, and related code
to mknod.c.

1 files changed, 79 insertions, 0 deletions

diff --git a/mknod.c b/mknod.c
new file mode 100644
index 00000000..07e9a459
--- /dev/null
+++ b/mknod.c
@@ -0,0 +1,79 @@
+#include "defs.h"
+
+#include <fcntl.h>
+
+#ifdef MAJOR_IN_SYSMACROS
+# include <sys/sysmacros.h>
+#endif
+
+#ifdef MAJOR_IN_MKDEV
+# include <sys/mkdev.h>
+#endif
+
+static int
+decode_mknod(struct tcb *tcp, int offset)
+{
+	int mode = tcp->u_arg[offset + 1];
+
+	if (entering(tcp)) {
+		printpath(tcp, tcp->u_arg[offset]);
+		tprintf(", %s", sprintmode(mode));
+		switch (mode & S_IFMT) {
+		case S_IFCHR:
+		case S_IFBLK:
+#if defined(SPARC) || defined(SPARC64)
+			if (current_personality == 1)
+				tprintf(", makedev(%lu, %lu)",
+				(unsigned long) ((tcp->u_arg[offset + 2] >> 18) & 0x3fff),
+				(unsigned long) (tcp->u_arg[offset + 2] & 0x3ffff));
+			else
+#endif /* SPARC || SPARC64 */
+				tprintf(", makedev(%lu, %lu)",
+				(unsigned long) major(tcp->u_arg[offset + 2]),
+				(unsigned long) minor(tcp->u_arg[offset + 2]));
+			break;
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+
+int
+sys_mknod(struct tcb *tcp)
+{
+	return decode_mknod(tcp, 0);
+}
+
+int
+sys_mknodat(struct tcb *tcp)
+{
+	if (entering(tcp))
+		print_dirfd(tcp, tcp->u_arg[0]);
+	return decode_mknod(tcp, 1);
+}
+
+#if defined(SPARC) || defined(SPARC64)
+int
+sys_xmknod(struct tcb *tcp)
+{
+	int mode = tcp->u_arg[2];
+
+	if (entering(tcp)) {
+		tprintf("%ld, ", tcp->u_arg[0]);
+		printpath(tcp, tcp->u_arg[1]);
+		tprintf(", %s", sprintmode(mode));
+		switch (mode & S_IFMT) {
+		case S_IFCHR:
+		case S_IFBLK:
+			tprintf(", makedev(%lu, %lu)",
+				(unsigned long) ((tcp->u_arg[3] >> 18) & 0x3fff),
+				(unsigned long) (tcp->u_arg[3] & 0x3ffff));
+			break;
+		default:
+			break;
+		}
+	}
+	return 0;
+}
+#endif /* SPARC || SPARC64 */