| /* Copyright (C) 2008, 2010 Free Software Foundation, Inc. |
| Contributed by Andreas Krebbel <Andreas.Krebbel@de.ibm.com>. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #include <sys/types.h> |
| #include <utmp.h> |
| #include <errno.h> |
| #include <libc-symbols.h> |
| |
| #include "utmp32.h" |
| #include "utmp-convert.h" |
| |
| /* Allocate a static buffer to be returned to the caller. As well as |
| with the existing version of these functions the caller has to be |
| aware that the contents of this buffer will change with subsequent |
| calls. */ |
| #define ALLOCATE_UTMP32_OUT(OUT) \ |
| static struct utmp32 *OUT = NULL; \ |
| \ |
| if (OUT == NULL) \ |
| { \ |
| OUT = malloc (sizeof (struct utmp32)); \ |
| if (OUT == NULL) \ |
| return NULL; \ |
| } |
| |
| /* Perform a lookup for a utmp entry matching FIELD using function |
| FUNC. FIELD is converted to a 64 bit utmp and the result is |
| converted back to 32 bit utmp. */ |
| #define ACCESS_UTMP_ENTRY(FUNC, FIELD) \ |
| struct utmp in64; \ |
| struct utmp *out64; \ |
| ALLOCATE_UTMP32_OUT (out32); \ |
| \ |
| utmp_convert32to64 (FIELD, &in64); \ |
| out64 = FUNC (&in64); \ |
| \ |
| if (out64 == NULL) \ |
| return NULL; \ |
| \ |
| utmp_convert64to32 (out64, out32); \ |
| \ |
| return out32; |
| |
| /* Search forward from the current point in the utmp file until the |
| next entry with a ut_type matching ID->ut_type. */ |
| struct utmp32 * |
| getutid32 (const struct utmp32 *id) |
| { |
| ACCESS_UTMP_ENTRY (__getutid, id) |
| } |
| symbol_version (getutid32, getutid, GLIBC_2.0); |
| |
| /* Search forward from the current point in the utmp file until the |
| next entry with a ut_line matching LINE->ut_line. */ |
| struct utmp32 * |
| getutline32 (const struct utmp32 *line) |
| { |
| ACCESS_UTMP_ENTRY (__getutline, line) |
| } |
| symbol_version (getutline32, getutline, GLIBC_2.0); |
| |
| /* Write out entry pointed to by UTMP_PTR into the utmp file. */ |
| struct utmp32 * |
| pututline32 (const struct utmp32 *utmp_ptr) |
| { |
| ACCESS_UTMP_ENTRY (__pututline, utmp_ptr) |
| } |
| symbol_version (pututline32, pututline, GLIBC_2.0); |
| |
| /* Read next entry from a utmp-like file. */ |
| struct utmp32 * |
| getutent32 (void) |
| { |
| struct utmp *out64; |
| ALLOCATE_UTMP32_OUT (out32); |
| |
| out64 = __getutent (); |
| if (!out64) |
| return NULL; |
| |
| utmp_convert64to32 (out64, out32); |
| return out32; |
| } |
| symbol_version (getutent32, getutent, GLIBC_2.0); |
| |
| /* Reentrant versions of the file for handling utmp files. */ |
| |
| int |
| getutent32_r (struct utmp32 *buffer, struct utmp32 **result) |
| { |
| struct utmp out64; |
| struct utmp *out64p; |
| int ret; |
| |
| ret = __getutent_r (&out64, &out64p); |
| if (ret == -1) |
| { |
| *result = NULL; |
| return -1; |
| } |
| |
| utmp_convert64to32 (out64p, buffer); |
| *result = buffer; |
| |
| return 0; |
| } |
| symbol_version (getutent32_r, getutent_r, GLIBC_2.0); |
| |
| int |
| getutid32_r (const struct utmp32 *id, struct utmp32 *buffer, |
| struct utmp32 **result) |
| { |
| struct utmp in64; |
| struct utmp out64; |
| struct utmp *out64p; |
| int ret; |
| |
| utmp_convert32to64 (id, &in64); |
| |
| ret = __getutid_r (&in64, &out64, &out64p); |
| if (ret == -1) |
| { |
| *result = NULL; |
| return -1; |
| } |
| |
| utmp_convert64to32 (out64p, buffer); |
| *result = buffer; |
| |
| return 0; |
| } |
| symbol_version (getutid32_r, getutid_r, GLIBC_2.0); |
| |
| int |
| getutline32_r (const struct utmp32 *line, |
| struct utmp32 *buffer, struct utmp32 **result) |
| { |
| struct utmp in64; |
| struct utmp out64; |
| struct utmp *out64p; |
| int ret; |
| |
| utmp_convert32to64 (line, &in64); |
| |
| ret = __getutline_r (&in64, &out64, &out64p); |
| if (ret == -1) |
| { |
| *result = NULL; |
| return -1; |
| } |
| |
| utmp_convert64to32 (out64p, buffer); |
| *result = buffer; |
| |
| return 0; |
| |
| } |
| symbol_version (getutline32_r, getutline_r, GLIBC_2.0); |
| |
| /* Append entry UTMP to the wtmp-like file WTMP_FILE. */ |
| void |
| updwtmp32 (const char *wtmp_file, const struct utmp32 *utmp) |
| { |
| struct utmp in32; |
| |
| utmp_convert32to64 (utmp, &in32); |
| __updwtmp (wtmp_file, &in32); |
| } |
| symbol_version (updwtmp32, updwtmp, GLIBC_2.0); |