ceph/src/seastar/dpdk/examples/cmdline/parse_obj_list.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation.
   3  * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
   4  * All rights reserved.
   5  */
   6
   7 #include <stdio.h>
   8 #include <inttypes.h>
   9 #include <stdarg.h>
  10 #include <errno.h>
  11 #include <ctype.h>
  12 #include <string.h>
  13 #include <netinet/in.h>
  14
  15 #include <cmdline_parse.h>
  16 #include <cmdline_parse_ipaddr.h>
  17
  18 #include <rte_string_fns.h>
  19
  20 #include "parse_obj_list.h"
  21
  22 /* This file is an example of extension of libcmdline. It provides an
  23  * example of objects stored in a list. */
  24
  25 struct cmdline_token_ops token_obj_list_ops = {
  26         .parse = parse_obj_list,
  27         .complete_get_nb = complete_get_nb_obj_list,
  28         .complete_get_elt = complete_get_elt_obj_list,
  29         .get_help = get_help_obj_list,
  30 };
  31
  32 int
  33 parse_obj_list(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
  34         unsigned ressize)
  35 {
  36         struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  37         struct token_obj_list_data *tkd = &tk2->obj_list_data;
  38         struct object *o;
  39         unsigned int token_len = 0;
  40
  41         if (*buf == 0)
  42                 return -1;
  43
  44         if (res && ressize < sizeof(struct object *))
  45                 return -1;
  46
  47         while(!cmdline_isendoftoken(buf[token_len]))
  48                 token_len++;
  49
  50         SLIST_FOREACH(o, tkd->list, next) {
  51                 if (token_len != strnlen(o->name, OBJ_NAME_LEN_MAX))
  52                         continue;
  53                 if (strncmp(buf, o->name, token_len))
  54                         continue;
  55                 break;
  56         }
  57         if (!o) /* not found */
  58                 return -1;
  59
  60         /* store the address of object in structure */
  61         if (res)
  62                 *(struct object **)res = o;
  63
  64         return token_len;
  65 }
  66
  67 int complete_get_nb_obj_list(cmdline_parse_token_hdr_t *tk)
  68 {
  69         struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  70         struct token_obj_list_data *tkd = &tk2->obj_list_data;
  71         struct object *o;
  72         int ret = 0;
  73
  74         SLIST_FOREACH(o, tkd->list, next) {
  75                 ret ++;
  76         }
  77         return ret;
  78 }
  79
  80 int complete_get_elt_obj_list(cmdline_parse_token_hdr_t *tk,
  81                               int idx, char *dstbuf, unsigned int size)
  82 {
  83         struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  84         struct token_obj_list_data *tkd = &tk2->obj_list_data;
  85         struct object *o;
  86         int i = 0;
  87         unsigned len;
  88
  89         SLIST_FOREACH(o, tkd->list, next) {
  90                 if (i++ == idx)
  91                         break;
  92         }
  93         if (!o)
  94                 return -1;
  95
  96         len = strnlen(o->name, OBJ_NAME_LEN_MAX);
  97         if ((len + 1) > size)
  98                 return -1;
  99
 100         if (dstbuf)
 101                 strlcpy(dstbuf, o->name, size);
 102
 103         return 0;
 104 }
 105
 106
 107 int get_help_obj_list(__attribute__((unused)) cmdline_parse_token_hdr_t *tk,
 108                       char *dstbuf, unsigned int size)
 109 {
 110         snprintf(dstbuf, size, "Obj-List");
 111         return 0;
 112 }