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(read_utmp) [UTMP_NAME_FUNCTION]: Upon realloc failure,

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don't leak memory and do call END_UTMP_ENT.
This commit is contained in:
Jim Meyering
2004-04-19 18:59:52 +00:00
parent 332853e722
commit cb5f6b9ad3
1 changed files with 10 additions and 4 deletions
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14
lib/readutmp.c
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@@ -1,5 +1,5 @@
/* GNU's read utmp module.
Copyright (C) 1992-2001, 2003 Free Software Foundation, Inc.
Copyright (C) 1992-2001, 2003, 2004 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -74,10 +74,16 @@ read_utmp (const char *filename, int *n_entries, STRUCT_UTMP **utmp_buf)
n_read = 0;
while ((u = GET_UTMP_ENT ()) != NULL)
{
STRUCT_UTMP *p;
++n_read;
utmp = (STRUCT_UTMP *) realloc (utmp, n_read * sizeof (STRUCT_UTMP));
if (utmp == NULL)
return 1;
p = (STRUCT_UTMP *) realloc (utmp, n_read * sizeof (STRUCT_UTMP));
if (p == NULL)
{
free (utmp);
END_UTMP_ENT ();
return 1;
}
utmp = p;
utmp[n_read - 1] = *u;
}