1 files changed, 63 insertions, 0 deletions
diff --git a/chown.c b/chown.c
new file mode 100644
index 000000000..a611f92f1
--- /dev/null
+++ b/chown.c
@@ -0,0 +1,63 @@
+#include "internal.h"
+#include <pwd.h>
+#include <grp.h>
+#include <string.h>
+#include <stdio.h>
+
+const char	chown_usage[] = "chown [-R] user-name file [file ...]\n"
+"\n\tThe group list is kept in the file /etc/groups.\n\n"
+"\t-R:\tRecursively change the mode of all files and directories\n"
+"\t\tunder the argument directory.";
+
+int
+parse_user_name(const char * s, struct FileInfo * i)
+{
+	struct	passwd * 	p;
+	char *				dot = strchr(s, '.');
+
+	if (! dot )
+		dot = strchr(s, ':');
+
+	if ( dot )
+		*dot = '\0';
+
+	if ( (p = getpwnam(s)) == 0 ) {
+		fprintf(stderr, "%s: no such user.\n", s);
+		return 1;
+	}
+	i->userID = p->pw_uid;
+
+	if ( dot ) {
+		struct group *	g = getgrnam(++dot);
+		if ( g == 0 ) {
+			fprintf(stderr, "%s: no such group.\n", dot);
+			return 1;
+		}
+		i->groupID = g->gr_gid;
+		i->changeGroupID = 1;
+	}
+	return 0;
+}
+
+extern int
+chown_main(struct FileInfo * i, int argc, char * * argv)
+{
+	int					status;
+
+	while ( argc >= 3 && strcmp("-R", argv[1]) == 0 ) {
+		i->recursive = 1;
+		argc--;
+		argv++;
+	}
+
+	if ( (status = parse_user_name(argv[1], i)) != 0 )
+		return status;
+
+	argv++;
+	argc--;
+
+	i->changeUserID = 1;
+	i->complainInPostProcess = 1;
+
+	return monadic_main(i, argc, argv);
+}