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From: "Slava Semushin" <slava.semushin@gmail.com>
To: "ALT Devel discussion list" <devel@lists.altlinux.org>
Subject: [devel] Нужно ли вызывать endpwent() после использования getpwuid() ?
Date: Mon, 26 Feb 2007 16:32:03 +0300
Message-ID: <75e139a00702260532j7c90aec2gadf659ea0e5c1de3@mail.gmail.com> (raw)

Здравствуйте!

Листал тут на работе книжку от O'Reilly "Secure Programming Book for C
and C++" и увидел такой пример:

%%
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <pwd.h>

int main(int argc, char *argv[]) {
  uid_t uid;
  struct passwd *pwd;

  uid = getuid();
  printf("User's UID is %d.\n", (int)uid);
  if ( ! (pwd = getpwuid(uid))) {
    printf("Unable to get user's password file record!\n");
    endpwent();
    return 1;
  }

  printf("User's home directory is %s\n", pwd->pw_dir);
  endpwent();

  return 0;
}
%%

Собственно, привлёк внимание факт вызова endpwent(). Почитал ман к
Линуксу, к Нетке, ещё каких-то в интернете и не очень понял,
действительно ли нужно после вызова getpwuid() вызывать endpwent().

Пожалуйста, разъясните этот момент, ведь если я правильно понял, то
невызов endpwent() чреват утечкой файлового дескриптора.

Заранее спасибо!

-- 
+ Slava Semushin | slava.semushin @ gmail.com
+ ALT Linux Team | php-coder @ altlinux.ru

             reply	other threads:[~2007-02-26 13:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-26 13:32 Slava Semushin [this message]
2007-02-26 13:44 ` Mikhail Gusarov
2007-02-26 13:49   ` Damir Shayhutdinov
2007-02-26 13:52   ` [devel] [SUMMARY][OFF]Re: " Slava Semushin
2007-02-26 13:56   ` [devel] " Dmitry V. Levin

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