LXR linux/tools/lib/symbol/kallsyms.c

   1#include "symbol/kallsyms.h"
   2#include <stdio.h>
   3#include <stdlib.h>
   4
   5u8 kallsyms2elf_type(char type)
   6{
   7        type = tolower(type);
   8        return (type == 't' || type == 'w') ? STT_FUNC : STT_OBJECT;
   9}
  10
  11int kallsyms__parse(const char *filename, void *arg,
  12                    int (*process_symbol)(void *arg, const char *name,
  13                                          char type, u64 start))
  14{
  15        char *line = NULL;
  16        size_t n;
  17        int err = -1;
  18        FILE *file = fopen(filename, "r");
  19
  20        if (file == NULL)
  21                goto out_failure;
  22
  23        err = 0;
  24
  25        while (!feof(file)) {
  26                u64 start;
  27                int line_len, len;
  28                char symbol_type;
  29                char *symbol_name;
  30
  31                line_len = getline(&line, &n, file);
  32                if (line_len < 0 || !line)
  33                        break;
  34
  35                line[--line_len] = '\0'; /* \n */
  36
  37                len = hex2u64(line, &start);
  38
  39                len++;
  40                if (len + 2 >= line_len)
  41                        continue;
  42
  43                symbol_type = line[len];
  44                len += 2;
  45                symbol_name = line + len;
  46                len = line_len - len;
  47
  48                if (len >= KSYM_NAME_LEN) {
  49                        err = -1;
  50                        break;
  51                }
  52
  53                err = process_symbol(arg, symbol_name, symbol_type, start);
  54                if (err)
  55                        break;
  56        }
  57
  58        free(line);
  59        fclose(file);
  60        return err;
  61
  62out_failure:
  63        return -1;
  64}
  65