initial commit

imported from https://salsa.debian.org/kernel-team/linux.git
commit 9d5cc9d9d6501d7f1dd7e194d4b245bd0b6c6a22
version 6.11.4-1

debian/rules.d/scripts/mod/modpost.c

@@ -0,0 +1,136 @@
+#include <elf.h>
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "modpost-opts.h"
+
+int main (int argc, char *argv[])
+{
+  char const *data, *class;
+  char *list_name = NULL;
+  char *name = NULL;
+  char prog[1024];
+  unsigned char ei[EI_NIDENT];
+  int opt;
+  FILE *file;
+
+  while ((opt = getopt (argc, argv, GETOPT_OPTIONS)) != -1)
+  { 
+    switch(opt)
+    {
+      GETOPT_CASE
+        break;
+      case 'T':
+        list_name = optarg;
+        break;
+      default:
+        return EXIT_FAILURE;
+    }
+  }
+
+  if (optind != argc)
+  {
+    name = argv[optind];
+  }
+  else if (list_name)
+  {
+    size_t name_len;
+    int is_stdin = strcmp (list_name, "-") == 0;
+
+    /* Read first line of list file */
+    if (is_stdin)
+    {
+      file = stdin;
+      setvbuf(stdin, NULL, _IONBF, 0); /* don't over-read */
+    }
+    else
+    {
+      file = fopen (list_name, "r");
+      if (!file)
+      {
+        fprintf (stderr, "Can't open \"%s\"\n", list_name);
+        return EXIT_FAILURE;
+      }
+    }
+    if (getline (&name, &name_len, file) < 0)
+    {
+      if (errno)
+      {
+        fprintf (stderr, "Can't read \"%s\"\n", list_name);
+        return EXIT_FAILURE;
+      }
+      else
+      {
+        /* Empty list */
+        return EXIT_SUCCESS;
+      }
+    }
+    if (!is_stdin)
+      fclose(file);
+
+    /* Remove new-line */
+    name [strcspn (name, "\n")] = 0;
+
+    /* If this came from stdin, we need to add the first name to the
+     * arguments, because the upstream modpost can't read it again.
+     */
+    if (is_stdin)
+    {
+      char **new_argv = malloc (sizeof(*argv) * (argc + 2));
+      memcpy(new_argv, argv, sizeof(*argv) * argc);
+      new_argv [argc] = name;
+      new_argv [argc + 1] = NULL;
+      argv = new_argv;
+    }
+  }
+  else
+  {
+    /* Empty list */
+    return EXIT_SUCCESS;
+  }
+
+  if (!(file = fopen (name, "r")))
+  {
+    fprintf (stderr, "Can't open \"%s\"\n", name);
+    return EXIT_FAILURE;
+  }
+
+  if (fread (ei, 1, EI_NIDENT, file) != EI_NIDENT)
+  {
+    fprintf (stderr, "Error: input truncated\n");
+    return EXIT_FAILURE;
+  }
+
+  if (memcmp (ei, ELFMAG, SELFMAG) != 0)
+  {
+    fprintf (stderr, "Error: not ELF\n");
+    return EXIT_FAILURE;
+  }
+  switch (ei[EI_DATA]) {
+    case ELFDATA2LSB:
+      data = "lsb";
+      break;
+    case ELFDATA2MSB:
+      data = "msb";
+      break;
+    default:
+      return EXIT_FAILURE;
+  }
+  switch (ei[EI_CLASS]) {
+    case ELFCLASS32:
+      class = "32";
+      break;
+    case ELFCLASS64:
+      class = "64";
+      break;
+    default:
+      return EXIT_FAILURE;
+  }
+  snprintf (prog, sizeof prog, "%s.real-%s-%s", argv[0], data, class);
+
+  return execv (prog, argv);
+}