fs/proc/util.c

0001 #include <linux/dcache.h>
0002 #include "internal.h"
0003
0004 unsigned name_to_int(const struct qstr *qstr)
0005 {
0006     const char *name = qstr->name;
0007     int len = qstr->len;
0008     unsigned n = 0;
0009
0010     if (len > 1 && *name == '0')
0011         goto out;
0012     do {
0013         unsigned c = *name++ - '0';
0014         if (c > 9)
0015             goto out;
0016         if (n >= (~0U-9)/10)
0017             goto out;
0018         n *= 10;
0019         n += c;
0020     } while (--len > 0);
0021     return n;
0022 out:
0023     return ~0U;
0024 }