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"Jordan Crouse" <jordan.crouse@amd.com> says:

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The following patch makes coreutils/test.c act fail gracefully if getgroups() 
returns a -1.  This fixes a problem on the One Laptop Per Child ROM image
whereby we were getting odd Memory exhausted messages for '[' and 'test'.

Found by Mitch Bradley <wmb@firmworks.com>
(Tweaked by Rob: no need to initialize a static to NULL, or realloc something
that's only allocated when it's NULL.)
This commit is contained in:
Rob Landley 2006-08-22 23:40:28 +00:00
parent 98a915713d
commit ecb29573e9
1 changed files with 5 additions and 3 deletions
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8
coreutils/test.c
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@ -151,7 +151,7 @@ typedef int arith_t;
static char **t_wp;
static struct t_op const *t_wp_op;
static gid_t *group_array = NULL;
static gid_t *group_array;
static int ngroups;
static enum token t_lex(char *s);
@ -547,8 +547,10 @@ static int test_eaccess(char *path, int mode)
static void initialize_group_array(void)
{
ngroups = getgroups(0, NULL);
group_array = xrealloc(group_array, ngroups * sizeof(gid_t));
getgroups(ngroups, group_array);
if (ngroups > 0) {
group_array = xmalloc(ngroups * sizeof(gid_t));
getgroups(ngroups, group_array);
}
}
/* Return non-zero if GID is one that we have in our groups list. */