Imported Upstream version 93u+upstream

1 files changed, 101 insertions, 0 deletions

diff --git a/src/lib/libast/string/fmtgid.c b/src/lib/libast/string/fmtgid.c
new file mode 100644
index 0000000..25ef158
--- /dev/null
+++ b/src/lib/libast/string/fmtgid.c
@@ -0,0 +1,101 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+/*
+ * Glenn Fowler
+ * AT&T Bell Laboratories
+ *
+ * cached gid number -> name
+ */
+
+#if defined(__STDPP__directive) && defined(__STDPP__hide)
+__STDPP__directive pragma pp:hide getgrgid
+#else
+#define getgrgid	______getgrgid
+#endif
+
+#include <ast.h>
+#include <cdt.h>
+#include <grp.h>
+
+#if defined(__STDPP__directive) && defined(__STDPP__hide)
+__STDPP__directive pragma pp:nohide getgrgid
+#else
+#undef	getgrgid
+#endif
+
+extern struct group*	getgrgid(gid_t);
+
+typedef struct Id_s
+{
+	Dtlink_t	link;
+	int		id;
+	char		name[1];
+} Id_t;
+
+/*
+ * return gid name given gid number
+ */
+
+char*
+fmtgid(int gid)
+{
+	register Id_t*		ip;
+	register char*		name;
+	register struct group*	gr;
+	int			z;
+
+	static Dt_t*		dict;
+	static Dtdisc_t		disc;
+
+	if (!dict)
+	{
+		disc.key = offsetof(Id_t, id);
+		disc.size = sizeof(int);
+		dict = dtopen(&disc, Dtset);
+	}
+	else if (ip = (Id_t*)dtmatch(dict, &gid))
+		return ip->name;
+	if (gr = getgrgid(gid))
+	{
+		name = gr->gr_name;
+#if _WINIX
+		if (streq(name, "Administrators"))
+			name = "sys";
+#endif
+	}
+	else if (gid == 0)
+		name = "sys";
+	else
+	{
+		name = fmtbuf(z = sizeof(gid) * 3 + 1);
+		sfsprintf(name, z, "%I*d", sizeof(gid), gid);
+	}
+	if (dict && (ip = newof(0, Id_t, 1, strlen(name))))
+	{
+		ip->id = gid;
+		strcpy(ip->name, name);
+		dtinsert(dict, ip);
+		return ip->name;
+	}
+	return name;
+}