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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /nis/nis_removemember.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'nis/nis_removemember.c')
-rw-r--r--nis/nis_removemember.c74
1 files changed, 48 insertions, 26 deletions
diff --git a/nis/nis_removemember.c b/nis/nis_removemember.c
index 2e45b4f..b9e27ab 100644
--- a/nis/nis_removemember.c
+++ b/nis/nis_removemember.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 1997,1998,1999,2004,2005,2006 Free Software Foundation, Inc.
+/* Copyright (c) 1997, 1998, 1999, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
@@ -28,12 +28,15 @@ nis_removemember (const_nis_name member, const_nis_name group)
{
size_t grouplen = strlen (group);
char buf[grouplen + 14 + NIS_MAXNAMELEN];
+ char leafbuf[grouplen + 2];
char domainbuf[grouplen + 2];
+ nis_name *newmem;
nis_result *res, *res2;
nis_error status;
char *cp, *cp2;
+ unsigned long int i, j, k;
- cp = rawmemchr (nis_leaf_of_r (group, buf, sizeof (buf) - 1), '\0');
+ cp = stpcpy (buf, nis_leaf_of_r (group, leafbuf, sizeof (leafbuf) - 1));
cp = stpcpy (cp, ".groups_dir");
cp2 = nis_domain_of_r (group, domainbuf, sizeof (domainbuf) - 1);
if (cp2 != NULL && cp2[0] != '\0')
@@ -41,41 +44,60 @@ nis_removemember (const_nis_name member, const_nis_name group)
cp = stpcpy (cp, ".");
stpcpy (cp, cp2);
}
- res = nis_lookup (buf, FOLLOW_LINKS | EXPAND_NAME);
- if (res == NULL)
- return NIS_NOMEMORY;
- if (NIS_RES_STATUS (res) != NIS_SUCCESS)
+ res = nis_lookup (buf, FOLLOW_LINKS|EXPAND_NAME);
+ if (res == NULL || NIS_RES_STATUS (res) != NIS_SUCCESS)
{
- status = NIS_RES_STATUS (res);
- nis_freeresult (res);
+ if (res)
+ {
+ status = NIS_RES_STATUS (res);
+ nis_freeresult (res);
+ }
+ else
+ return NIS_NOMEMORY;
return status;
}
- if (NIS_RES_NUMOBJ (res) != 1
- || __type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ)
+ if ((res->objects.objects_len != 1) ||
+ (__type_of (NIS_RES_OBJECT (res)) != NIS_GROUP_OBJ))
{
nis_freeresult (res);
return NIS_INVALIDOBJ;
}
- nis_name *gr_members_val
- = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val;
- u_int gr_members_len
- = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
+ newmem =
+ calloc (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len,
+ sizeof (char *));
+ if (newmem == NULL)
+ return NIS_NOMEMORY;
- u_int j = 0;
- for (u_int i = 0; i < gr_members_len; ++i)
- if (strcmp (gr_members_val[i], member) != 0)
- gr_members_val[j++] = gr_members_val[i];
- else
- free (gr_members_val[i]);
+ k = NIS_RES_OBJECT (res)[0].GR_data.gr_members.gr_members_len;
+ j = 0;
+ for (i = 0; i < NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len;
+ ++i)
+ {
+ if (strcmp (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i],
+ member) != 0)
+ {
+ newmem[j] = NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i];
+ ++j;
+ }
+ else
+ {
+ free (NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_val[i]);
+ --k;
+ }
+ }
+ free (NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val);
+ assert (k <= NIS_RES_OBJECT(res)->GR_data.gr_members.gr_members_len);
+ /* This realloc() call always decreases the size. This cannot
+ fail. We still have the test but do not recover memory
+ (i.e., we overwrite the input pointer). */
+ newmem = realloc (newmem, k * sizeof (char*));
+ if (newmem == NULL)
+ return NIS_NOMEMORY;
- /* There is no need to reallocate the gr_members_val array. We
- just adjust the size to match the number of strings still in
- it. Yes, xdr_array will use mem_free with a size parameter
- but this is mapped to a simple free call which determines the
- size of the block by itself. */
- NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = j;
+ NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_val = newmem;
+ NIS_RES_OBJECT (res)->GR_data.gr_members.gr_members_len = k;
cp = stpcpy (buf, NIS_RES_OBJECT (res)->zo_name);
*cp++ = '.';