diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c b/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c new file mode 100644 index 0000000000..32a5d71376 --- /dev/null +++ b/sysdeps/unix/sysv/linux/s390/s390-32/utmp32.c @@ -0,0 +1,185 @@ +/* Copyright (C) 2008 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); |