1.0.64 release

VtoyTool/vtoyksym.c

@@ -0,0 +1,113 @@
+/******************************************************************************
+ * vtoyksym.c  ---- ventoy ksym
+ *
+ * Copyright (c) 2021, longpanda <admin@ventoy.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+static int verbose = 0;
+#define debug(fmt, ...) if(verbose) printf(fmt, ##__VA_ARGS__)
+
+int vtoyksym_main(int argc, char **argv)
+{
+    int i;
+    unsigned long long addr1 = 0;
+    unsigned long long addr2 = 0;
+    char sym[256];
+    char line[1024];
+    const char *name = NULL;
+    FILE *fp;
+
+    for (i = 0; i < argc; i++)
+    {
+        if (argv[i][0] == '-' && argv[i][1] == 'p')
+        {
+            printf("%d", getpagesize());
+            return 0;
+        }
+    }
+    
+    for (i = 0; i < argc; i++)
+    {
+        if (argv[i][0] == '-' && argv[i][1] == 'v')
+        {
+            verbose = 1;
+            break;
+        }
+    }
+
+    name = argv[2] ? argv[2] : "/proc/kallsyms";
+    fp = fopen(name, "r");
+    if (!fp)
+    {
+        fprintf(stderr, "Failed to open file %s err:%d\n", name, errno);
+        return 1;
+    }
+
+    debug("open %s success\n", name);
+
+    snprintf(sym, sizeof(sym), " %s", argv[1]);
+    debug("lookup for <%s>\n", sym);
+
+    while (fgets(line, sizeof(line), fp))
+    {
+        if (strstr(line, sym))
+        {
+            addr1 = strtoull(line, NULL, 16);
+            if (!fgets(line, sizeof(line), fp))
+            {
+                addr1 = 0;
+                fprintf(stderr, "Failed to read next line\n");
+            }
+            else
+            {
+                addr2 = strtoull(line, NULL, 16);                
+            }
+
+            debug("addr1=<0x%llx> addr2=<0x%llx>\n", addr1, addr2);
+            break;
+        }
+    }
+
+    if (addr1 > addr2)
+    {
+        debug("Invalid addr range\n");
+        printf("0 0\n");
+    }
+    else
+    {
+        printf("0x%llx %llu\n", addr1, addr2 - addr1);
+    }
+
+    fclose(fp);
+
+    return 0;
+}
+
+// wrapper main
+#ifndef BUILD_VTOY_TOOL
+int main(int argc, char **argv)
+{
+    return vtoyksym_main(argc, argv);
+}
+#endif
+