source: MondoRescue/branches/2.2.9/mindi-busybox/libpwdgrp/pwd_grp_internal.c@ 2725

/* vi: set sw=4 ts=4: */
/* Copyright (C) 2003     Manuel Novoa III
 *
 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
 */

/* Nov 6, 2003  Initial version.
 *
 * NOTE: This implementation is quite strict about requiring all
 *    field seperators.  It also does not allow leading whitespace
 *    except when processing the numeric fields.  glibc is more
 *    lenient.  See the various glibc difference comments below.
 *
 * TODO:
 *    Move to dynamic allocation of (currently statically allocated)
 *      buffers; especially for the group-related functions since
 *      large group member lists will cause error returns.
 */

#ifndef GETXXKEY_R_FUNC
#error GETXXKEY_R_FUNC is not defined!
#endif

int GETXXKEY_R_FUNC(GETXXKEY_R_KEYTYPE key,
                GETXXKEY_R_ENTTYPE *__restrict resultbuf,
                char *__restrict buffer, size_t buflen,
                GETXXKEY_R_ENTTYPE **__restrict result)
{
    FILE *stream;
    int rv;

    *result = NULL;

    stream = fopen_for_read(GETXXKEY_R_PATHNAME);
    if (!stream)
        return errno;
    while (1) {
        rv = bb__pgsreader(GETXXKEY_R_PARSER, resultbuf, buffer, buflen, stream);
        if (!rv) {
            if (GETXXKEY_R_TEST(resultbuf)) { /* found key? */
                *result = resultbuf;
                break;
            }
        } else {
            if (rv == ENOENT) {  /* EOF encountered */
                rv = 0;
            }
            break;
        }
    }
    fclose(stream);

    return rv;
}

#undef GETXXKEY_R_FUNC
#undef GETXXKEY_R_PARSER
#undef GETXXKEY_R_ENTTYPE
#undef GETXXKEY_R_TEST
#undef GETXXKEY_R_KEYTYPE
#undef GETXXKEY_R_PATHNAME