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glibc  2.9
Functions | Variables
nscd_conf.c File Reference
#include <ctype.h>
#include <errno.h>
#include <error.h>
#include <libintl.h>
#include <malloc.h>
#include <pwd.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/types.h>
#include "dbg_log.h"
#include "nscd.h"

Go to the source code of this file.

Functions

char * xstrdup (const char *s)
static int find_db (const char *name)
int nscd_parse_file (const char *fname, struct database_dyn dbs[lastdb])

Variables

const char *const dbnames [lastdb]

Function Documentation

static int find_db ( const char *  name) [static]

Definition at line 51 of file nscd_conf.c.

{
  for (int cnt = 0; cnt < lastdb; ++cnt)
    if (strcmp (name, dbnames[cnt]) == 0)
      return cnt;

  error (0, 0, _("database %s is not supported"), name);
  return -1;
}

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int nscd_parse_file ( const char *  fname,
struct database_dyn  dbs[lastdb] 
)

Definition at line 62 of file nscd_conf.c.

{
  FILE *fp;
  char *line, *cp, *entry, *arg1, *arg2;
  size_t len;
  int cnt;
  const unsigned int initial_error_message_count = error_message_count;

  /* Open the configuration file.  */
  fp = fopen (fname, "r");
  if (fp == NULL)
    return -1;

  /* The stream is not used by more than one thread.  */
  (void) __fsetlocking (fp, FSETLOCKING_BYCALLER);

  line = NULL;
  len = 0;

  do
    {
      ssize_t n = getline (&line, &len, fp);
      if (n < 0)
       break;
      if (line[n - 1] == '\n')
       line[n - 1] = '\0';

      /* Because the file format does not know any form of quoting we
        can search forward for the next '#' character and if found
        make it terminating the line.  */
      *strchrnul (line, '#') = '\0';

      /* If the line is blank it is ignored.  */
      if (line[0] == '\0')
       continue;

      entry = line;
      while (isspace (*entry) && *entry != '\0')
       ++entry;
      cp = entry;
      while (!isspace (*cp) && *cp != '\0')
       ++cp;
      arg1 = cp;
      ++arg1;
      *cp = '\0';
      if (strlen (entry) == 0)
       error (0, 0, _("Parse error: %s"), line);
      while (isspace (*arg1) && *arg1 != '\0')
       ++arg1;
      cp = arg1;
      while (!isspace (*cp) && *cp != '\0')
       ++cp;
      arg2 = cp;
      ++arg2;
      *cp = '\0';
      if (strlen (arg2) > 0)
       {
         while (isspace (*arg2) && *arg2 != '\0')
           ++arg2;
         cp = arg2;
         while (!isspace (*cp) && *cp != '\0')
           ++cp;
         *cp = '\0';
       }

      if (strcmp (entry, "positive-time-to-live") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           dbs[idx].postimeout = atol (arg2);
       }
      else if (strcmp (entry, "negative-time-to-live") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           dbs[idx].negtimeout = atol (arg2);
       }
      else if (strcmp (entry, "suggested-size") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           dbs[idx].suggested_module
             = atol (arg2) ?: DEFAULT_SUGGESTED_MODULE;
       }
      else if (strcmp (entry, "enable-cache") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           {
             if (strcmp (arg2, "no") == 0)
              dbs[idx].enabled = 0;
             else if (strcmp (arg2, "yes") == 0)
              dbs[idx].enabled = 1;
           }
       }
      else if (strcmp (entry, "check-files") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           {
             if (strcmp (arg2, "no") == 0)
              dbs[idx].check_file = 0;
             else if (strcmp (arg2, "yes") == 0)
              dbs[idx].check_file = 1;
           }
       }
      else if (strcmp (entry, "max-db-size") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           dbs[idx].max_db_size = atol (arg2) ?: DEFAULT_MAX_DB_SIZE;
       }
      else if (strcmp (entry, "logfile") == 0)
       set_logfile (arg1);
      else if (strcmp (entry, "debug-level") == 0)
       {
         int level = atoi (arg1);
         if (level > 0)
           debug_level = level;
       }
      else if (strcmp (entry, "threads") == 0)
       {
         if (nthreads == -1)
           nthreads = MAX (atol (arg1), lastdb);
       }
      else if (strcmp (entry, "max-threads") == 0)
       {
         max_nthreads = MAX (atol (arg1), lastdb);
       }
      else if (strcmp (entry, "server-user") == 0)
        {
          if (!arg1)
            error (0, 0, _("Must specify user name for server-user option"));
          else
            server_user = xstrdup (arg1);
        }
      else if (strcmp (entry, "stat-user") == 0)
        {
          if (arg1 == NULL)
            error (0, 0, _("Must specify user name for stat-user option"));
          else
           {
             stat_user = xstrdup (arg1);

             struct passwd *pw = getpwnam (stat_user);
             if (pw != NULL)
              stat_uid = pw->pw_uid;
           }
        }
      else if (strcmp (entry, "persistent") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           {
             if (strcmp (arg2, "no") == 0)
              dbs[idx].persistent = 0;
             else if (strcmp (arg2, "yes") == 0)
              dbs[idx].persistent = 1;
           }
       }
      else if (strcmp (entry, "shared") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           {
             if (strcmp (arg2, "no") == 0)
              dbs[idx].shared = 0;
             else if (strcmp (arg2, "yes") == 0)
              dbs[idx].shared = 1;
           }
       }
      else if (strcmp (entry, "reload-count") == 0)
       {
         if (strcasecmp (arg1, "unlimited") == 0)
           reload_count = UINT_MAX;
         else
           {
             unsigned int count = strtoul (arg1, NULL, 0);
             if (count > UINT8_MAX - 1)
              reload_count = UINT_MAX;
             else if (count >= 0)
           reload_count = count;
             else
              error (0, 0, _("invalid value for 'reload-count': %u"), count);
           }
       }
      else if (strcmp (entry, "paranoia") == 0)
       {
         if (strcmp (arg1, "no") == 0)
           paranoia = 0;
         else if (strcmp (arg1, "yes") == 0)
           paranoia = 1;
       }
      else if (strcmp (entry, "restart-interval") == 0)
       {
         if (arg1 != NULL)
           restart_interval = atol (arg1);
         else
            error (0, 0, _("Must specify value for restart-interval option"));
       }
      else if (strcmp (entry, "auto-propagate") == 0)
       {
         int idx = find_db (arg1);
         if (idx >= 0)
           {
             if (strcmp (arg2, "no") == 0)
              dbs[idx].propagate = 0;
             else if (strcmp (arg2, "yes") == 0)
              dbs[idx].propagate = 1;
           }
       }
      else
       error (0, 0, _("Unknown option: %s %s %s"), entry, arg1, arg2);
    }
  while (!feof_unlocked (fp));

  if (paranoia)
    {
      restart_time = time (NULL) + restart_interval;

      /* Save the old current workding directory if we are in paranoia
        mode.  We have to change back to it.  */
      oldcwd = get_current_dir_name ();
      if (oldcwd == NULL)
       {
         error (0, 0, _("\
cannot get current working directory: %s; disabling paranoia mode"),
                 strerror (errno));
         paranoia = 0;
       }
    }

  /* Enforce sanity.  */
  if (max_nthreads < nthreads)
    max_nthreads = nthreads;

  for (cnt = 0; cnt < lastdb; ++cnt)
    {
      size_t datasize = (sizeof (struct database_pers_head)
                      + roundup (dbs[cnt].suggested_module
                                * sizeof (ref_t), ALIGN)
                      + (dbs[cnt].suggested_module
                         * DEFAULT_DATASIZE_PER_BUCKET));
      if (datasize > dbs[cnt].max_db_size)
       {
         error (0, 0, _("maximum file size for %s database too small"),
                 dbnames[cnt]);
         dbs[cnt].max_db_size = datasize;
       }

    }

  /* Free the buffer.  */
  free (line);
  /* Close configuration file.  */
  fclose (fp);

  return error_message_count != initial_error_message_count;
}

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char* xstrdup ( const char *  s)

Variable Documentation

Initial value:
{
  [pwddb] = "passwd",
  [grpdb] = "group",
  [hstdb] = "hosts",
  [servdb] = "services"
}

Definition at line 41 of file nscd_conf.c.