LXR linux/fs/proc/util.c

   1#include <linux/dcache.h>
   2#include "internal.h"
   3
   4unsigned name_to_int(const struct qstr *qstr)
   5{
   6        const char *name = qstr->name;
   7        int len = qstr->len;
   8        unsigned n = 0;
   9
  10        if (len > 1 && *name == '0')
  11                goto out;
  12        do {
  13                unsigned c = *name++ - '0';
  14                if (c > 9)
  15                        goto out;
  16                if (n >= (~0U-9)/10)
  17                        goto out;
  18                n *= 10;
  19                n += c;
  20        } while (--len > 0);
  21        return n;
  22out:
  23        return ~0U;
  24}
  25