Справочник по консольным командам Toybox для Android 12


  Ver.0.8.4     Ver.0.8.9     Pending  

Путь: Toys/Other, команды версии: Ver.4     Ver.9


modinfo

Комментарии в файле modinfo.c :

usage: modinfo [-0] [-b basedir] [-k kernel] [-F field] [module|file...]

Отображение полей модуля для модулей, указанных по имени или пути .ko.
  • -F Показывать только заданное поле.
  • -0 Разделять поля с помощью NUL, а не новой строки.
  • -b Использовать <basedir> в качестве корня для /
  • -k lib/modules/.

  • usage: modinfo [-0] [-b basedir] [-k kernel] [-F field] [module|file...]

    Display module fields for modules specified by name or .ko path.
  • -F Only show the given field
  • -0 Separate fields with NUL rather than newline
  • -b Use <basedir> as root for /lib/modules/
  • -k Look in given directory under /lib/modules/

  • Исходный текст в файле modinfo.c

    #define FOR_modinfo
    #include "toys.h"
    
    GLOBALS(
      char *F, *k, *b;
    
      long mod;
      int count;
    )
    
    static void output_field(char *field, char *value)
    {
      if (!TT.F) xprintf("%s:%*c", field, 15-(int)strlen(field), ' ');
      else if (strcmp(TT.F, field)) return;
      xprintf("%s", value);
      xputc(FLAG(0) ? 0 : '\n');
    }
    
    static void modinfo_file(char *full_name)
    {
      int fd, flen, i;
      char *buf = 0, *end, *modinfo_tags[] = {
        "license", "author", "description", "firmware", "alias", "srcversion",
        "depends", "retpoline", "intree", "name", "vermagic", "parm", "parmtype",
        "scmversion",
      };
    
      if (-1 != (fd = open(full_name, O_RDONLY))) {
        flen = fdlength(fd);
        buf = xmmap(0, flen, PROT_READ, MAP_SHARED, fd, 0);
        end = buf + flen;
        close(fd);
      }
    
      if (!buf) {
        perror_msg_raw(full_name);
        return;
      }
    
      TT.count++;
      output_field("filename", full_name);
    
      for (i=0; i<ARRAY_LEN(modinfo_tags); i++) {
        char *field = modinfo_tags[i], *p = buf;
        int slen = sprintf(toybuf, "%s=", field);
    
        while (p && p < end) {
          p = memmem(p, end-p, toybuf, slen);
          if (p) output_field(field, p += slen);
        }
      }
    
      munmap(buf, flen);
    }
    
    static int check_module(struct dirtree *new)
    {
      char *s;
      int len;
    
      if (!dirtree_notdotdot(new)) return 0;
    
      if (!S_ISREG(new->st.st_mode)) return DIRTREE_RECURSE;
    
      s = toys.optargs[TT.mod];
    
      // The kernel treats - and _ the same, so we should too.
      for (len = 0; s[len]; len++) {
        if (s[len] == '-' && new->name[len] == '_') continue;
        if (s[len] == '_' && new->name[len] == '-') continue;
        if (s[len] != new->name[len]) break;
      }
      if (s[len] || strcmp(new->name+len, ".ko")) return DIRTREE_RECURSE;
    
      modinfo_file(s = dirtree_path(new, 0));
      free(s);
    
      return DIRTREE_ABORT;
    }
    
    void modinfo_main(void)
    {
      struct utsname uts;
    
      // Android (as shipped by Google) currently only has modules on /vendor.
      // Android does not support multiple sets of modules for different kernels.
      if (CFG_TOYBOX_ON_ANDROID) {
       if (!TT.b) TT.b = "/vendor";
       if (!TT.k) TT.k = "";
      } else {
       uname(&uts);
       if (!TT.b) TT.b = "";
       if (!TT.k) TT.k = uts.release;
      }
    
      for (TT.mod = 0; TT.mod<toys.optc; TT.mod++) {
        if (strend(toys.optargs[TT.mod], ".ko")) modinfo_file(toys.optargs[TT.mod]);
        else {
          char *path = xmprintf("%s/lib/modules/%s", TT.b, TT.k);
    
          TT.count = 0;
          dirtree_read(path, check_module);
          if (!TT.count) error_msg("%s: not found", toys.optargs[TT.mod]);
          free(path);
        }
      }
    }