1 files changed, 119 insertions, 0 deletions
diff --git a/sys/cmd/rm/rm.c b/sys/cmd/rm/rm.c
new file mode 100644
index 0000000..7e83f5f
--- /dev/null
+++ b/sys/cmd/rm/rm.c
@@ -0,0 +1,119 @@
+#include <u.h>
+#include <libn.h>
+#include <sys/stat.h>
+
+/*
+ * globals
+ */
+
+static char errbuf[1024];
+static int  numerrs;
+static struct
+{
+    uchar i : 1;
+    uchar f : 1;
+    uchar r : 1;
+} flag;
+
+/*
+ * utilities
+ */
+
+static
+void
+errors(char *fmt, ...)
+{
+    va_list args;
+
+    if(flag.f)
+        return;
+
+    va_start(args, fmt);
+    vsnprintf(errbuf, arrlen(errbuf), fmt, args);
+    va_end(args);
+
+    fprintf(stderr, "rm: %s\n", errbuf);
+    numerrs++;
+}
+
+static
+int
+yes(void)
+{
+    int i, b;
+    i = b = getchar();
+    while(b != '\n' && b != EOF)
+        b = getchar();
+
+    return(i== 'y');
+}
+
+static
+int
+rm(char *path, int level)
+{
+    int d;
+    struct stat buf;
+    if(stat(path, &buf)) {
+        errors("%s: non-existent", path);
+        return 1;
+    }
+
+    if((buf.st_mode&S_IFMT) == S_IFDIR) {
+        if(!flag.r) {
+            errors("%s: is directory", path);
+            return 1;
+        }
+        if(access(path, 02) < 0) {
+            errors("%s: not permitted", path);
+            return 1;
+        }
+        if(flag.i && level != 0) {
+            printf("directory %s: ", path);
+            if(!yes())
+                return 0;
+        }
+        if((d=
+    }
+}
+
+/*
+ * main point of entry
+ */
+
+static
+void
+usage(void)
+{
+    fprintf(stderr, "usage: rm [-ifr] file ...\n");
+    exit(1);
+}
+
+int
+main(int argc, char *argv[])
+{
+    int   i;
+    char *s;
+
+    ARGBEGIN{
+    case 'i':
+        flag.i = 1;
+        break;
+    case 'r':
+        flag.r = 1;
+        break;
+    case 'f':
+        flag.f = 1;
+        break;
+    default:
+        usage();
+    }ARGEND;
+
+    for(i = 0; i < argc; i++){
+        s = argv[i];
+        if (rm(s, 0) != -1)
+            continue;
+    }
+
+    exit(numerrs);
+}