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 = malloc(256);
  20
  21         fd = open(filename, O_RDONLY);
  22         if (fd >= 0)
  23                 goto exit;
  24         if (!data_dir)
  25                 goto exit;
  26         strncpy(buf, data_dir, 254);
  27         buf[255] = '\0';
  28         strncat(buf, filename, 254 - strlen(buf));
  29         fd = open(buf, O_RDONLY);
  30         if (fd >= 0)
  31                 goto exit;
  32
  33 exit:
  34         free(buf);
  35         return fd;
  36 }
  37
  38 struct token *get_tokens_file(const char *filename)
  39 {
  40         int fd;
  41         struct token *token;
  42
  43         if (option_no_data)
  44                 return NULL;
  45         fd = open_file(filename);
  46         if (fd < 0)
  47                 return NULL;
  48         token = tokenize(filename, fd, NULL, NULL);
  49         close(fd);
  50         return token;
  51 }