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cgfsng: lxc_cpumask_to_cpulist()

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-02-17 18:54:10 +01:00
parent d5d468f6f0
commit 414c6719d5
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GPG Key ID: 8EB056D53EECB12D
1 changed files with 19 additions and 12 deletions
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17
src/lxc/cgroups/cgfsng.c
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@ -448,24 +448,31 @@ static uint32_t *lxc_cpumask(char *buf, size_t nbits)
/* Turn cpumask into simple, comma-separated cpulist. */ /* Turn cpumask into simple, comma-separated cpulist. */
static char *lxc_cpumask_to_cpulist(uint32_t *bitarr, size_t nbits) static char *lxc_cpumask_to_cpulist(uint32_t *bitarr, size_t nbits)
{ {
size_t i;
int ret; int ret;
char numstr[LXC_NUMSTRLEN64] = {0}; size_t i;
char **cpulist = NULL; char **cpulist = NULL;
char numstr[LXC_NUMSTRLEN64] = {0};
for (i = 0; i <= nbits; i++) { for (i = 0; i <= nbits; i++) {
if (is_set(i, bitarr)) { if (!is_set(i, bitarr))
continue;
ret = snprintf(numstr, LXC_NUMSTRLEN64, "%zu", i); ret = snprintf(numstr, LXC_NUMSTRLEN64, "%zu", i);
if (ret < 0 || (size_t)ret >= LXC_NUMSTRLEN64) { if (ret < 0 || (size_t)ret >= LXC_NUMSTRLEN64) {
lxc_free_array((void **)cpulist, free); lxc_free_array((void **)cpulist, free);
return NULL; return NULL;
} }
if (lxc_append_string(&cpulist, numstr) < 0) {
ret = lxc_append_string(&cpulist, numstr);
if (ret < 0) {
lxc_free_array((void **)cpulist, free); lxc_free_array((void **)cpulist, free);
return NULL; return NULL;
} }
} }
}
if (!cpulist)
return NULL;
return lxc_string_join(",", (const char **)cpulist, false); return lxc_string_join(",", (const char **)cpulist, false);
} }