lib/glibc
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(proc_utmp_eq): New function. (pututline_file): Correctly decide whether LAST_ENTRY matches DATA. Don't depend on ut_id ever being set. (internal_getut_r): Renamed from internal_getutid_r. Use proc_utmp_eq.

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This commit is contained in:
Miles Bader 1997-03-02 04:15:21 +00:00
parent ceb2d9aaa8
commit ced858d05f
1 changed files with 32 additions and 22 deletions
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54
login/utmp_file.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1996 Free Software Foundation, Inc. /* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library. This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com> Contributed by Ulrich Drepper <drepper@cygnus.com>
and Paul Janzen <pcj@primenet.com>, 1996. and Paul Janzen <pcj@primenet.com>, 1996.
@ -210,7 +210,26 @@ getutline_r_file (const struct utmp *line, struct utmp *buffer,
static int static int
internal_getutid_r (const struct utmp *id, struct utmp *buffer) proc_utmp_eq (const struct utmp *entry, const struct utmp *match)
{
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 && match->ut_id
? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
: strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0));
}
static int
internal_getut_r (const struct utmp *id, struct utmp *buffer)
{ {
if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME
|| id->ut_type == OLD_TIME || id->ut_type == NEW_TIME) || id->ut_type == OLD_TIME || id->ut_type == NEW_TIME)
@ -251,11 +270,7 @@ internal_getutid_r (const struct utmp *id, struct utmp *buffer)
} }
file_offset += sizeof (struct utmp); file_offset += sizeof (struct utmp);
if (( buffer->ut_type == INIT_PROCESS if (proc_utmp_eq (&buffer, id))
|| buffer->ut_type == LOGIN_PROCESS
|| buffer->ut_type == USER_PROCESS
|| buffer->ut_type == DEAD_PROCESS)
&& strncmp (buffer->ut_id, id->ut_id, sizeof id->ut_id) == 0)
break; break;
} }
} }
@ -276,7 +291,7 @@ getutid_r_file (const struct utmp *id, struct utmp *buffer,
return -1; return -1;
} }
if (internal_getutid_r (id, &last_entry) < 0) if (internal_getut_r (id, &last_entry) < 0)
{ {
*result = NULL; *result = NULL;
return -1; return -1;
@ -306,21 +321,16 @@ pututline_file (const struct utmp *data)
setutent_file (0); setutent_file (0);
/* Find the correct place to insert the data. */ /* Find the correct place to insert the data. */
if (file_offset > 0) if (file_offset > 0
found = 0; && ((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))
|| proc_utmp_eq (&last_entry, data)))
found = 1;
else else
if ( last_entry.ut_type == RUN_LVL found = internal_getut_r (data, &buffer);
|| last_entry.ut_type == BOOT_TIME
|| last_entry.ut_type == OLD_TIME
|| last_entry.ut_type == NEW_TIME
|| (( last_entry.ut_type == INIT_PROCESS
|| last_entry.ut_type == LOGIN_PROCESS
|| last_entry.ut_type == USER_PROCESS
|| last_entry.ut_type == DEAD_PROCESS)
&& !strncmp (last_entry.ut_id, data->ut_id, sizeof data->ut_id)))
found = 1;
else
found = internal_getutid_r (data, &buffer);
/* Try to lock the file. */ /* Try to lock the file. */
memset (&fl, '\0', sizeof (struct flock)); memset (&fl, '\0', sizeof (struct flock));