AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-08 14:20:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

login: Assume that _HAVE_UT_* constants are true

Browse Source 
Make the GNU version of bits/utmp.h the generic version because
all remaining ports use it (with a sysdeps override for
Linux s390/s390x).
This commit is contained in:
Florian Weimer 2019-08-13 12:09:32 +02:00
parent 9b9670fcd8
commit a33b817f13
13 changed files with 138 additions and 302 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
ChangeLog
View File

@ -1,3 +1,29 @@
2019-08-13 Florian Weimer <fweimer@redhat.com>
* login/getutid_r.c (__getutid_r): _HAVE_UT_ID and _HAVE_UT_TYPE
are always true.
* login/getutmp.c (getutmp): _HAVE_UT_TYPE, _HAVE_UT_PID,
_HAVE_UT_ID, _HAVE_UT_HOST, _HAVE_UT_TV are always true.
* login/getutmpx.c (getutmpx): Likewise.
* login/login.c (login): _HAVE_UT_TYPE, _HAVE_UT_PID are always
true.
* login/logout.c (logout): _HAVE_UT_TYPE, _HAVE_UT_HOST,
_HAVE_UT_TV are always true.
* login/logwtmp.c (logwtmp): _HAVE_UT_PID, _HAVE_UT_TYPE,
_HAVE_UT_HOST, _HAVE_UT_TV are always true.
* login/tst-utmp.c: _HAVE_UT_TYPE, _HAVE_UT_TV are always true.
* login/utmp_file.c (__libc_setutent): _HAVE_UT_TYPE, _HAVE_UT_ID
are always true.
(internal_getut_r): _HAVE_UT_TYPE is always true.
(__libc_pututline): Likewise.
* login/programs/utmpdump.c (print_entry): Assume that
_HAVE_UT_TYPE, _HAVE_UT_PID, _HAVE_UT_ID, _HAVE_UT_HOST,
_HAVE_UT_TV are always true.
* sysdeps/generic/utmp-equal.h (__utmp_equal): _HAVE_UT_TYPE,
_HAVE_UT_ID are always true.
* sysdeps/gnu/bits/utmp.h: Move to ...
* bits/utmp.h: ... here, replacing the old file.
2019-08-12 Florian Weimer <fweimer@redhat.com>
* elf/Makefile (tests): Unconditionally add tst-dlopen-aout.

103
bits/utmp.h
View File

@ -1,4 +1,4 @@
/* The `struct utmp' type, describing entries in the utmp file. Generic/BSDish
/* The `struct utmp' type, describing entries in the utmp file.
Copyright (C) 1993-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -21,29 +21,106 @@
#endif
#include <paths.h>
#include <time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <bits/wordsize.h>
#define UT_NAMESIZE 8
#define UT_LINESIZE 8
#define UT_HOSTSIZE 16
#define UT_LINESIZE 32
#define UT_NAMESIZE 32
#define UT_HOSTSIZE 256
/* The structure describing an entry in the database of
previous logins. */
struct lastlog
{
time_t ll_time;
#if __WORDSIZE_TIME64_COMPAT32
int32_t ll_time;
#else
__time_t ll_time;
#endif
char ll_line[UT_LINESIZE];
char ll_host[UT_HOSTSIZE];
};
struct utmp
/* The structure describing the status of a terminated process. This
type is used in `struct utmp' below. */
struct exit_status
{
char ut_line[UT_LINESIZE];
char ut_user[UT_NAMESIZE];
#define ut_name ut_user
char ut_host[UT_HOSTSIZE];
long int ut_time;
short int e_termination; /* Process termination status. */
short int e_exit; /* Process exit status. */
};
#define _HAVE_UT_HOST 1 /* We have the ut_host field. */
/* The structure describing an entry in the user accounting database. */
struct utmp
{
short int ut_type; /* Type of login. */
pid_t ut_pid; /* Process ID of login process. */
char ut_line[UT_LINESIZE]
__attribute_nonstring__; /* Devicename. */
char ut_id[4]; /* Inittab ID. */
char ut_user[UT_NAMESIZE]
__attribute_nonstring__; /* Username. */
char ut_host[UT_HOSTSIZE]
__attribute_nonstring__; /* Hostname for remote login. */
struct exit_status ut_exit; /* Exit status of a process marked
as DEAD_PROCESS. */
/* The ut_session and ut_tv fields must be the same size when compiled
32- and 64-bit. This allows data files and shared memory to be
shared between 32- and 64-bit applications. */
#if __WORDSIZE_TIME64_COMPAT32
int32_t ut_session; /* Session ID, used for windowing. */
struct
{
int32_t tv_sec; /* Seconds. */
int32_t tv_usec; /* Microseconds. */
} ut_tv; /* Time entry was made. */
#else
long int ut_session; /* Session ID, used for windowing. */
struct timeval ut_tv; /* Time entry was made. */
#endif
int32_t ut_addr_v6[4]; /* Internet address of remote host. */
char __glibc_reserved[20]; /* Reserved for future use. */
};
/* Backwards compatibility hacks. */
#define ut_name ut_user
#ifndef _NO_UT_TIME
/* We have a problem here: `ut_time' is also used otherwise. Define
_NO_UT_TIME if the compiler complains. */
# define ut_time ut_tv.tv_sec
#endif
#define ut_xtime ut_tv.tv_sec
#define ut_addr ut_addr_v6[0]
/* Values for the `ut_type' field of a `struct utmp'. */
#define EMPTY 0 /* No valid user accounting information. */
#define RUN_LVL 1 /* The system's runlevel. */
#define BOOT_TIME 2 /* Time of system boot. */
#define NEW_TIME 3 /* Time after system clock changed. */
#define OLD_TIME 4 /* Time when system clock changed. */
#define INIT_PROCESS 5 /* Process spawned by the init process. */
#define LOGIN_PROCESS 6 /* Session leader of a logged in user. */
#define USER_PROCESS 7 /* Normal process. */
#define DEAD_PROCESS 8 /* Terminated process. */
#define ACCOUNTING 9
/* Old Linux name for the EMPTY type. */
#define UT_UNKNOWN EMPTY
/* Tell the user that we have a modern system with UT_HOST, UT_PID,
UT_TYPE, UT_ID and UT_TV fields. */
#define _HAVE_UT_TYPE 1
#define _HAVE_UT_PID 1
#define _HAVE_UT_ID 1
#define _HAVE_UT_TV 1
#define _HAVE_UT_HOST 1

5
login/getutid_r.c
View File

@ -32,7 +32,6 @@ __libc_lock_define (extern, __libc_utmp_lock attribute_hidden)
int
__getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
{
#if (_HAVE_UT_ID - 0) && (_HAVE_UT_TYPE - 0)
int retval;
/* Test whether ID has any of the legal types. */
@ -54,10 +53,6 @@ __getutid_r (const struct utmp *id, struct utmp *buffer, struct utmp **result)
__libc_lock_unlock (__libc_utmp_lock);
return retval;
#else /* !_HAVE_UT_ID && !_HAVE_UT_TYPE */
__set_errno (ENOSYS);
return -1;
#endif
}
libc_hidden_def (__getutid_r)
weak_alias (__getutid_r, getutid_r)

12
login/getutmp.c
View File

@ -23,23 +23,11 @@
void
getutmp (const struct utmpx *utmpx, struct utmp *utmp)
{
#if _HAVE_UT_TYPE - 0
utmp->ut_type = utmpx->ut_type;
#endif
#if _HAVE_UT_PID - 0
utmp->ut_pid = utmpx->ut_pid;
#endif
memcpy (utmp->ut_line, utmpx->ut_line, sizeof (utmp->ut_line));
memcpy (utmp->ut_user, utmpx->ut_user, sizeof (utmp->ut_user));
#if _HAVE_UT_ID - 0
memcpy (utmp->ut_id, utmpx->ut_id, sizeof (utmp->ut_id));
#endif
#if _HAVE_UT_HOST - 0
memcpy (utmp->ut_host, utmpx->ut_host, sizeof (utmp->ut_host));
#endif
#if _HAVE_UT_TV - 0
utmp->ut_tv = utmpx->ut_tv;
#else
utmp->ut_time = utmpx->ut_time;
#endif
}

13
login/getutmpx.c
View File

@ -24,24 +24,11 @@ void
getutmpx (const struct utmp *utmp, struct utmpx *utmpx)
{
memset (utmpx, 0, sizeof (struct utmpx));
#if _HAVE_UT_TYPE - 0
utmpx->ut_type = utmp->ut_type;
#endif
#if _HAVE_UT_PID - 0
utmpx->ut_pid = utmp->ut_pid;
#endif
memcpy (utmpx->ut_line, utmp->ut_line, sizeof (utmp->ut_line));
memcpy (utmpx->ut_user, utmp->ut_user, sizeof (utmp->ut_user));
#if _HAVE_UT_ID - 0
memcpy (utmpx->ut_id, utmp->ut_id, sizeof (utmp->ut_id));
#endif
#if _HAVE_UT_HOST - 0
memcpy (utmpx->ut_host, utmp->ut_host, sizeof (utmp->ut_host));
#endif
#if _HAVE_UT_TV - 0
utmpx->ut_tv = utmp->ut_tv;
#else
utmpx->ut_time = utmp->ut_time;
#endif
}

4
login/login.c
View File

@ -91,12 +91,8 @@ login (const struct utmp *ut)
struct utmp copy = *ut;
/* Fill in those fields we supply. */
#if _HAVE_UT_TYPE - 0
copy.ut_type = USER_PROCESS;
#endif
#if _HAVE_UT_PID - 0
copy.ut_pid = getpid ();
#endif
/* Seek tty. */
found_tty = tty_name (STDIN_FILENO, &tty, sizeof (_tty));

10
login/logout.c
View File

@ -36,9 +36,7 @@ logout (const char *line)
setutent ();
/* Fill in search information. */
#if _HAVE_UT_TYPE - 0
tmp.ut_type = USER_PROCESS;
#endif
strncpy (tmp.ut_line, line, sizeof tmp.ut_line);
/* Read the record. */
@ -46,20 +44,12 @@ logout (const char *line)
{
/* Clear information about who & from where. */
memset (ut->ut_name, '\0', sizeof ut->ut_name);
#if _HAVE_UT_HOST - 0
memset (ut->ut_host, '\0', sizeof ut->ut_host);
#endif
#if _HAVE_UT_TV - 0
struct timeval tv;
__gettimeofday (&tv, NULL);
ut->ut_tv.tv_sec = tv.tv_sec;
ut->ut_tv.tv_usec = tv.tv_usec;
#else
ut->ut_time = time (NULL);
#endif
#if _HAVE_UT_TYPE - 0
ut->ut_type = DEAD_PROCESS;
#endif
if (pututline (ut) != NULL)
result = 1;

10
login/logwtmp.c
View File

@ -30,26 +30,16 @@ logwtmp (const char *line, const char *name, const char *host)
/* Set information in new entry. */
memset (&ut, 0, sizeof (ut));
#if _HAVE_UT_PID - 0
ut.ut_pid = getpid ();
#endif
#if _HAVE_UT_TYPE - 0
ut.ut_type = name[0] ? USER_PROCESS : DEAD_PROCESS;
#endif
strncpy (ut.ut_line, line, sizeof ut.ut_line);
strncpy (ut.ut_name, name, sizeof ut.ut_name);
#if _HAVE_UT_HOST - 0
strncpy (ut.ut_host, host, sizeof ut.ut_host);
#endif
#if _HAVE_UT_TV - 0
struct timeval tv;
__gettimeofday (&tv, NULL);
ut.ut_tv.tv_sec = tv.tv_sec;
ut.ut_tv.tv_usec = tv.tv_usec;
#else
ut.ut_time = time (NULL);
#endif
updwtmp (_PATH_WTMP, &ut);
}

46
login/programs/utmpdump.c
View File

@ -37,47 +37,11 @@ print_entry (struct utmp *up)
temp_tv.tv_sec = up->ut_tv.tv_sec;
temp_tv.tv_usec = up->ut_tv.tv_usec;
(printf) (
/* The format string. */
#if _HAVE_UT_TYPE
"[%d] "
#endif
#if _HAVE_UT_PID
"[%05d] "
#endif
#if _HAVE_UT_ID
"[%-4.4s] "
#endif
"[%-8.8s] [%-12.12s]"
#if _HAVE_UT_HOST
" [%-16.16s]"
#endif
" [%-15.15s]"
#if _HAVE_UT_TV
" [%ld]"
#endif
"\n"
/* The arguments. */
#if _HAVE_UT_TYPE
, up->ut_type
#endif
#if _HAVE_UT_PID
, up->ut_pid
#endif
#if _HAVE_UT_ID
, up->ut_id
#endif
, up->ut_user, up->ut_line
#if _HAVE_UT_HOST
, up->ut_host
#endif
#if _HAVE_UT_TV
, 4 + ctime (&temp_tv.tv_sec)
, (long int) temp_tv.tv_usec
#else
, 4 + ctime (&up->ut_time)
#endif
);
printf ("[%d] [%05d] [%-4.4s] [%-8.8s] [%-12.12s] [%-16.16s] [%-15.15s]"
" [%ld]\n",
up->ut_type, up->ut_pid, up->ut_id, up->ut_user, up->ut_line,
up->ut_host, 4 + ctime (&temp_tv.tv_sec),
(long int) temp_tv.tv_usec);
}
int

25
login/tst-utmp.c
View File

@ -39,8 +39,6 @@
#endif
#if defined UTMPX || _HAVE_UT_TYPE
/* Prototype for our test function. */
static int do_test (int argc, char *argv[]);
@ -75,11 +73,7 @@ do_prepare (int argc, char *argv[])
struct utmp entry[] =
{
#if defined UTMPX || _HAVE_UT_TV
#define UT(a) .ut_tv = { .tv_sec = (a)}
#else
#define UT(a) .ut_time = (a)
#endif
{ .ut_type = BOOT_TIME, .ut_pid = 1, UT(1000) },
{ .ut_type = RUN_LVL, .ut_pid = 1, UT(2000) },
@ -167,11 +161,7 @@ simulate_login (const char *line, const char *user)
entry[n].ut_pid = (entry_pid += 27);
entry[n].ut_type = USER_PROCESS;
strncpy (entry[n].ut_user, user, sizeof (entry[n].ut_user));
#if defined UTMPX || _HAVE_UT_TV - 0
entry[n].ut_tv.tv_sec = (entry_time += 1000);
#else
entry[n].ut_time = (entry_time += 1000);
#endif
setutent ();
if (pututline (&entry[n]) == NULL)
@ -201,11 +191,7 @@ simulate_logout (const char *line)
{
entry[n].ut_type = DEAD_PROCESS;
strncpy (entry[n].ut_user, "", sizeof (entry[n].ut_user));
#if defined UTMPX || _HAVE_UT_TV - 0
entry[n].ut_tv.tv_sec = (entry_time += 1000);
#else
entry[n].ut_time = (entry_time += 1000);
#endif
setutent ();
if (pututline (&entry[n]) == NULL)
@ -390,14 +376,3 @@ do_test (int argc, char *argv[])
return result;
}
#else
/* No field 'ut_type' in struct utmp. */
int
main (void)
{
return 0;
}
#endif

26
login/utmp_file.c
View File

@ -129,14 +129,7 @@ __libc_setutent (void)
file_offset = 0;
/* Make sure the entry won't match. */
#if _HAVE_UT_TYPE - 0
last_entry.ut_type = -1;
#else
last_entry.ut_line[0] = '\177';
# if _HAVE_UT_ID - 0
last_entry.ut_id[0] = '\0';
# endif
#endif
return 1;
}
@ -201,7 +194,6 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer,
LOCKING_FAILED ();
}
#if _HAVE_UT_TYPE - 0
if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME
|| id->ut_type == OLD_TIME || id->ut_type == NEW_TIME)
{
@ -225,7 +217,6 @@ internal_getut_r (const struct utmp *id, struct utmp *buffer,
}
}
else
#endif /* _HAVE_UT_TYPE */
{
/* Search for the next entry with the specified ID and with type
INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS. */
@ -316,13 +307,10 @@ __libc_getutline_r (const struct utmp *line, struct utmp *buffer,
file_offset += sizeof (struct utmp);
/* Stop if we found a user or login entry. */
if (
#if _HAVE_UT_TYPE - 0
(last_entry.ut_type == USER_PROCESS
if ((last_entry.ut_type == USER_PROCESS
|| last_entry.ut_type == LOGIN_PROCESS)
&&
#endif
!strncmp (line->ut_line, last_entry.ut_line, sizeof line->ut_line))
&& (strncmp (line->ut_line, last_entry.ut_line, sizeof line->ut_line)
== 0))
break;
}
@ -368,16 +356,12 @@ __libc_pututline (const struct utmp *data)
/* Find the correct place to insert the data. */
if (file_offset > 0
&& (
#if _HAVE_UT_TYPE - 0
(last_entry.ut_type == data->ut_type
&& ((last_entry.ut_type == data->ut_type
&& (last_entry.ut_type == RUN_LVL
|| last_entry.ut_type == BOOT_TIME
|| last_entry.ut_type == OLD_TIME
|| last_entry.ut_type == NEW_TIME))
||
#endif
__utmp_equal (&last_entry, data)))
|| __utmp_equal (&last_entry, data)))
found = 1;
else
{

34
sysdeps/generic/utmp-equal.h
View File

@ -27,26 +27,16 @@
static int
__utmp_equal (const struct utmp *entry, const struct utmp *match)
{
return
(
#if _HAVE_UT_TYPE - 0
(entry->ut_type == INIT_PROCESS
|| entry->ut_type == LOGIN_PROCESS
|| entry->ut_type == USER_PROCESS
|| entry->ut_type == DEAD_PROCESS)
&&
(match->ut_type == INIT_PROCESS
|| match->ut_type == LOGIN_PROCESS
|| match->ut_type == USER_PROCESS
|| match->ut_type == DEAD_PROCESS)
&&
#endif
#if _HAVE_UT_ID - 0
(entry->ut_id[0] && match->ut_id[0]
? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
: strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)
#else
strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0
#endif
);
return (entry->ut_type == INIT_PROCESS
|| entry->ut_type == LOGIN_PROCESS
|| entry->ut_type == USER_PROCESS
|| entry->ut_type == DEAD_PROCESS)
&& (match->ut_type == INIT_PROCESS
|| match->ut_type == LOGIN_PROCESS
|| match->ut_type == USER_PROCESS
|| match->ut_type == DEAD_PROCESS)
&& (entry->ut_id[0] && match->ut_id[0]
? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
: (strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line)
== 0));
}

126
sysdeps/gnu/bits/utmp.h
View File

@ -1,126 +0,0 @@
/* The `struct utmp' type, describing entries in the utmp file. GNU version.
Copyright (C) 1993-2019 Free Software Foundation, Inc.
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, see
<http://www.gnu.org/licenses/>. */
#ifndef _UTMP_H
# error "Never include <bits/utmp.h> directly; use <utmp.h> instead."
#endif
#include <paths.h>
#include <sys/time.h>
#include <sys/types.h>
#include <bits/wordsize.h>
#define UT_LINESIZE 32
#define UT_NAMESIZE 32
#define UT_HOSTSIZE 256
/* The structure describing an entry in the database of
previous logins. */
struct lastlog
{
#if __WORDSIZE_TIME64_COMPAT32
int32_t ll_time;
#else
__time_t ll_time;
#endif
char ll_line[UT_LINESIZE];
char ll_host[UT_HOSTSIZE];
};
/* The structure describing the status of a terminated process. This
type is used in `struct utmp' below. */
struct exit_status
{
short int e_termination; /* Process termination status. */
short int e_exit; /* Process exit status. */
};
/* The structure describing an entry in the user accounting database. */
struct utmp
{
short int ut_type; /* Type of login. */
pid_t ut_pid; /* Process ID of login process. */
char ut_line[UT_LINESIZE]
__attribute_nonstring__; /* Devicename. */
char ut_id[4]; /* Inittab ID. */
char ut_user[UT_NAMESIZE]
__attribute_nonstring__; /* Username. */
char ut_host[UT_HOSTSIZE]
__attribute_nonstring__; /* Hostname for remote login. */
struct exit_status ut_exit; /* Exit status of a process marked
as DEAD_PROCESS. */
/* The ut_session and ut_tv fields must be the same size when compiled
32- and 64-bit. This allows data files and shared memory to be
shared between 32- and 64-bit applications. */
#if __WORDSIZE_TIME64_COMPAT32
int32_t ut_session; /* Session ID, used for windowing. */
struct
{
int32_t tv_sec; /* Seconds. */
int32_t tv_usec; /* Microseconds. */
} ut_tv; /* Time entry was made. */
#else
long int ut_session; /* Session ID, used for windowing. */
struct timeval ut_tv; /* Time entry was made. */
#endif
int32_t ut_addr_v6[4]; /* Internet address of remote host. */
char __glibc_reserved[20]; /* Reserved for future use. */
};
/* Backwards compatibility hacks. */
#define ut_name ut_user
#ifndef _NO_UT_TIME
/* We have a problem here: `ut_time' is also used otherwise. Define
_NO_UT_TIME if the compiler complains. */
# define ut_time ut_tv.tv_sec
#endif
#define ut_xtime ut_tv.tv_sec
#define ut_addr ut_addr_v6[0]
/* Values for the `ut_type' field of a `struct utmp'. */
#define EMPTY 0 /* No valid user accounting information. */
#define RUN_LVL 1 /* The system's runlevel. */
#define BOOT_TIME 2 /* Time of system boot. */
#define NEW_TIME 3 /* Time after system clock changed. */
#define OLD_TIME 4 /* Time when system clock changed. */
#define INIT_PROCESS 5 /* Process spawned by the init process. */
#define LOGIN_PROCESS 6 /* Session leader of a logged in user. */
#define USER_PROCESS 7 /* Normal process. */
#define DEAD_PROCESS 8 /* Terminated process. */
#define ACCOUNTING 9
/* Old Linux name for the EMPTY type. */
#define UT_UNKNOWN EMPTY
/* Tell the user that we have a modern system with UT_HOST, UT_PID,
UT_TYPE, UT_ID and UT_TV fields. */
#define _HAVE_UT_TYPE 1
#define _HAVE_UT_PID 1
#define _HAVE_UT_ID 1
#define _HAVE_UT_TV 1
#define _HAVE_UT_HOST 1