src/basic/errno-list.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <string.h>
   5
   6 #include "errno-list.h"
   7 #include "macro.h"
   8
   9 static const struct errno_name* lookup_errno(register const char *str,
  10                                              register GPERF_LEN_TYPE len);
  11
  12 #include "errno-from-name.h"
  13 #include "errno-to-name.h"
  14
  15 const char *errno_to_name(int id) {
  16
  17         if (id < 0)
  18                 id = -id;
  19
  20         if ((size_t) id >= ELEMENTSOF(errno_names))
  21                 return NULL;
  22
  23         return errno_names[id];
  24 }
  25
  26 int errno_from_name(const char *name) {
  27         const struct errno_name *sc;
  28
  29         assert(name);
  30
  31         sc = lookup_errno(name, strlen(name));
  32         if (!sc)
  33                 return -EINVAL;
  34
  35         assert(sc->id > 0);
  36         return sc->id;
  37 }