smatch_files.c

   1 /*
   2  * sparse/smatch_files.c
   3  *
   4  * Copyright (C) 2009 Dan Carpenter.
   5  *
   6  *  Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #include <string.h>
  11 #include <fcntl.h>
  12 #include <unistd.h>
  13 #include "parse.h"
  14 #include "smatch.h"
  15
  16 static int open_file(const char *filename)
  17 {
  18         int fd;
  19         char buf[256];
  20
  21         fd = open(filename, O_RDONLY);
  22         if (fd >= 0)
  23                 goto exit;
  24         if (!data_dir)
  25                 goto exit;
  26         snprintf(buf, 256, "%s/%s", data_dir, filename);
  27         fd = open(buf, O_RDONLY);
  28 exit:
  29         return fd;
  30 }
  31
  32 struct token *get_tokens_file(const char *filename)
  33 {
  34         int fd;
  35         struct token *token;
  36
  37         if (option_no_data)
  38                 return NULL;
  39         fd = open_file(filename);
  40         if (fd < 0)
  41                 return NULL;
  42         token = tokenize(filename, fd, NULL, NULL);
  43         close(fd);
  44         return token;
  45 }