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cgfsng: append_null_to_list()

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-02-17 17:08:58 +01:00
parent 3fd0de4d30
commit 8b8db2f6af
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GPG Key ID: 8EB056D53EECB12D
1 changed files with 6 additions and 6 deletions
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12
src/lxc/cgroups/cgfsng.c
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@ -211,18 +211,18 @@ static void *must_alloc(size_t sz)
return must_realloc(NULL, sz); return must_realloc(NULL, sz);
} }
/* /* Given a pointer to a null-terminated array of pointers, realloc to add one
* Given a pointer to a null-terminated array of pointers, realloc to * entry, and point the new entry to NULL. Do not fail. Return the index to the
* add one entry, and point the new entry to NULL. Do not fail. Return * second-to-last entry - that is, the one which is now available for use
* the index to the second-to-last entry - that is, the one which is * (keeping the list null-terminated).
* now available for use (keeping the list null-terminated).
*/ */
static int append_null_to_list(void ***list) static int append_null_to_list(void ***list)
{ {
int newentry = 0; int newentry = 0;
if (*list) if (*list)
for (; (*list)[newentry]; newentry++); for (; (*list)[newentry]; newentry++)
;
*list = must_realloc(*list, (newentry + 2) * sizeof(void **)); *list = must_realloc(*list, (newentry + 2) * sizeof(void **));
(*list)[newentry + 1] = NULL; (*list)[newentry + 1] = NULL;