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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [intrinsics/] [getlog.c] - Rev 750
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/* Implementation of the GETLOG g77 intrinsic. Copyright (C) 2005, 2007, 2009, 2011 Free Software Foundation, Inc. Contributed by François-Xavier Coudert <coudert@clipper.ens.fr> This file is part of the GNU Fortran runtime library (libgfortran). Libgfortran is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Libgfortran is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. Under Section 7 of GPL version 3, you are granted additional permissions described in the GCC Runtime Library Exception, version 3.1, as published by the Free Software Foundation. You should have received a copy of the GNU General Public License and a copy of the GCC Runtime Library Exception along with this program; see the files COPYING3 and COPYING.RUNTIME respectively. If not, see <http://www.gnu.org/licenses/>. */ #include "libgfortran.h" #include <stdlib.h> #include <string.h> #ifdef HAVE_UNISTD_H # if defined __MINGW32__ && defined HAVE_GETLOGIN # define _POSIX 1 # endif #include <unistd.h> #endif #ifdef HAVE_PWD_H #include <pwd.h> #endif /* Windows32 version */ #if defined __MINGW32__ && !defined HAVE_GETLOGIN #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <lmcons.h> /* for UNLEN */ static char * w32_getlogin (void) { static char name [UNLEN + 1]; DWORD namelen = sizeof (name); GetUserName (name, &namelen); return (name[0] == 0 ? NULL : name); } #undef getlogin #define getlogin w32_getlogin #define HAVE_GETLOGIN 1 #endif /* GETLOG (LOGIN), g77 intrinsic for retrieving the login name for the process. CHARACTER(len=*), INTENT(OUT) :: LOGIN */ void PREFIX(getlog) (char *, gfc_charlen_type); export_proto_np(PREFIX(getlog)); void PREFIX(getlog) (char * login, gfc_charlen_type login_len) { int p_len; char *p; memset (login, ' ', login_len); /* Blank the string. */ #if defined(HAVE_POSIX_GETPWUID_R) && defined(HAVE_GETEUID) struct passwd pwd; struct passwd *result; char *buf; int err; /* To be pedantic, buflen should be determined by sysconf(_SC_GETPW_R_SIZE_MAX), which is 1024 on some tested targets; we do something simple in case the target doesn't support sysconf. */ static const size_t buflen = 1024; buf = get_mem (buflen); err = getpwuid_r (geteuid (), &pwd, buf, buflen, &result); if (err != 0 || result == NULL) goto cleanup; p = pwd.pw_name; #elif defined(HAVE_GETPWUID) && defined(HAVE_GETEUID) { struct passwd *pw = getpwuid (geteuid ()); if (pw) p = pw->pw_name; else return; } #elif HAVE_GETLOGIN p = getlogin(); # else return; #endif if (p == NULL) goto cleanup; p_len = strlen (p); if (login_len < p_len) p_len = login_len; memcpy (login, p, p_len); cleanup: #if defined (HAVE_POSIX_GETPWUID_R) && defined(HAVE_GETEUID) free (buf); #else ; #endif }
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