Mikael Magnusson: 26670: add zsh/attr module

1 files changed, 174 insertions, 0 deletions

diff --git a/Src/Modules/attr.c b/Src/Modules/attr.c
new file mode 100644
index 000000000..3355d5c6b
--- /dev/null
+++ b/Src/Modules/attr.c
@@ -0,0 +1,174 @@
+/*
+ * attr.c - extended attributes (xattr) manipulation
+ *
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 2009 Mikael Magnusson
+ * 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 Mikael Magnusson 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.
+ *
+ * Mikael Magnusson 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 Mikael Magnusson and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+
+#include "attr.mdh"
+#include "attr.pro"
+
+#include <sys/types.h>
+#include <sys/xattr.h>
+
+static int
+bin_getattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
+{
+    int ret = 0;
+    int len;
+    char value[256];
+
+    unmetafy(*argv, NULL);
+    unmetafy(*(argv+1), NULL);
+    if (listxattr(*argv, NULL, 0) > 0) {
+        if (0 < (len = getxattr(*argv, *(argv+1), value, 255))) {
+            if (len < 256) {
+                value[len] = '\0';
+                if (*(argv+2))
+                    setsparam(*(argv+2), metafy(value, len, META_DUP));
+                else
+                    printf("%s\n", value);
+            }
+        } else {
+            zwarnnam(nam, "%s: %e", metafy(*argv, -1, META_NOALLOC), errno);
+            ret = 1;
+        }
+    }
+    return ret;
+}
+
+static int
+bin_setattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
+{
+    int ret = 0;
+ 
+    unmetafy(*argv, NULL);
+    unmetafy(*(argv+1), NULL);
+    unmetafy(*(argv+2), NULL);
+    if (setxattr(*argv, *(argv+1), *(argv+2), strlen(*(argv+2)), 0)) {
+        zwarnnam(nam, "%s: %e", metafy(*argv, -1, META_NOALLOC), errno);
+        ret = 1;
+    }
+    return ret;
+}
+
+static int
+bin_delattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
+{
+    int ret = 0;
+ 
+    unmetafy(*argv, NULL);
+    unmetafy(*(argv+1), NULL);
+    if (removexattr(*argv, *(argv+1))) {
+        zwarnnam(nam, "%s: %e", metafy(*argv, -1, META_NOALLOC), errno);
+        ret = 1;
+    }
+    return ret;
+}
+ 
+static int
+bin_listattr(char *nam, char **argv, UNUSED(Options ops), UNUSED(int func))
+{
+    int ret = 0;
+    int len, i = 1;
+    char value[256];
+
+    unmetafy(*argv, NULL);
+    if (0 < (len = listxattr(*argv, value, 256))) {
+        if (len < 256) {
+            char *p = value;
+            if (*(argv+1))
+                setsparam(*(argv+1), metafy(value, len, META_DUP));
+            else while (p < &value[len]) {
+                printf("%s\n", p);
+                p += strlen(p) + 1;
+            }
+        }
+    } else {
+        zwarnnam(nam, "%s: %e", metafy(*argv, -1, META_NOALLOC), errno);
+        ret = 1;
+    }
+    return ret;
+}
+
+/* module paraphernalia */
+
+static struct builtin bintab[] = {
+    BUILTIN("zgetattr", 0, bin_getattr, 2, 3, 0, NULL, NULL),
+    BUILTIN("zsetattr", 0, bin_setattr, 3, 3, 0, NULL, NULL),
+    BUILTIN("zdelattr", 0, bin_delattr, 2, 2, 0, NULL, NULL),
+    BUILTIN("zlistattr", 0, bin_listattr, 1, 2, 0, NULL, NULL),
+};
+
+static struct features module_features = {
+    bintab, sizeof(bintab)/sizeof(*bintab),
+    NULL, 0,
+    NULL, 0,
+    NULL, 0,
+    0
+};
+
+/**/
+int
+setup_(UNUSED(Module m))
+{
+    return 0;
+}
+
+/**/
+int
+features_(Module m, char ***features)
+{
+    *features = featuresarray(m, &module_features);
+    return 0;
+}
+
+/**/
+int
+enables_(Module m, int **enables)
+{
+    return handlefeatures(m, &module_features, enables);
+}
+
+/**/
+int
+boot_(UNUSED(Module m))
+{
+    return 0;
+}
+
+/**/
+int
+cleanup_(Module m)
+{
+    return setfeatureenables(m, &module_features, NULL);
+}
+
+/**/
+int
+finish_(UNUSED(Module m))
+{
+    return 0;
+}