Initial revision

1 files changed, 141 insertions, 0 deletions

diff --git a/Src/Modules/cap.c b/Src/Modules/cap.c
new file mode 100644
index 000000000..008b6932d
--- /dev/null
+++ b/Src/Modules/cap.c
@@ -0,0 +1,141 @@
+/*
+ * cap.c - POSIX.1e (POSIX.6) capability set manipulation
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1997 Andrew Main
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Andrew Main or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Andrew Main and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Andrew Main and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose.  The software
+ * provided hereunder is on an "as is" basis, and Andrew Main and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#include "cap.mdh"
+#include "cap.pro"
+
+#ifdef HAVE_CAP_GET_PROC
+
+static int
+bin_cap(char *nam, char **argv, char *ops, int func)
+{
+    int ret = 0;
+    cap_t caps;
+    if(*argv) {
+	caps = cap_from_text(*argv);
+	if(!caps) {
+	    zwarnnam(nam, "invalid capability string", NULL, 0);
+	    return 1;
+	}
+	if(cap_set_proc(caps)) {
+	    zwarnnam(nam, "can't change capabilites: %e", NULL, errno);
+	    ret = 1;
+	}
+    } else {
+	char *result;
+	ssize_t length;
+	caps = cap_get_proc();
+	if(caps)
+	    result = cap_to_text(caps, &length);
+	if(!caps || !result) {
+	    zwarnnam(nam, "can't get capabilites: %e", NULL, errno);
+	    ret = 1;
+	} else
+	    puts(result);
+    }
+    cap_free(&caps);
+    return ret;
+}
+
+static int
+bin_getcap(char *nam, char **argv, char *ops, int func)
+{
+    int ret = 0;
+
+    do {
+	char *result;
+	ssize_t length;
+	cap_t caps = cap_get_file(*argv);
+	if(caps)
+	    result = cap_to_text(caps, &length);
+	if (!caps || !result) {
+	    zwarnnam(nam, "%s: %e", *argv, errno);
+	    ret = 1;
+	} else
+	    printf("%s %s\n", *argv, result);
+	cap_free(&caps);
+    } while(*++argv);
+    return ret;
+}
+
+static int
+bin_setcap(char *nam, char **argv, char *ops, int func)
+{
+    cap_t caps;
+    int ret = 0;
+
+    caps = cap_from_text(*argv++);
+    if(!caps) {
+	zwarnnam(nam, "invalid capability string", NULL, 0);
+	return 1;
+    }
+
+    do {
+	if(cap_set_file(*argv, caps)) {
+	    zwarnnam(nam, "%s: %e", *argv, errno);
+	    ret = 1;
+	}
+    } while(*++argv);
+    cap_free(&caps);
+    return ret;
+}
+
+#else /* !HAVE_CAP_GET_PROC */
+
+# define bin_cap    bin_notavail
+# define bin_getcap bin_notavail
+# define bin_setcap bin_notavail
+
+#endif /* !HAVE_CAP_GET_PROC */
+
+/* module paraphernalia */
+
+static struct builtin bintab[] = {
+    BUILTIN("cap",    0, bin_cap,    0,  1, 0, NULL, NULL),
+    BUILTIN("getcap", 0, bin_getcap, 1, -1, 0, NULL, NULL),
+    BUILTIN("setcap", 0, bin_setcap, 2, -1, 0, NULL, NULL),
+};
+
+/**/
+int
+boot_cap(Module m)
+{
+    return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+}
+
+#ifdef MODULE
+
+/**/
+int
+cleanup_cap(Module m)
+{
+    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+    return 0;
+}
+#endif