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lxccontainer: config_file_exists()

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Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner 2018-02-24 15:06:32 +01:00
parent 238b3e5ea4
commit ef1ab8f10d
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GPG Key ID: 8EB056D53EECB12D
1 changed files with 8 additions and 5 deletions
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13
src/lxc/lxccontainer.c
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@ -113,12 +113,15 @@ static bool do_lxcapi_save_config(struct lxc_container *c, const char *alt_file)
static bool config_file_exists(const char *lxcpath, const char *cname)
{
/* $lxcpath + '/' + $cname + '/config' + \0 */
int ret, len = strlen(lxcpath) + strlen(cname) + 9;
char *fname = alloca(len);
int ret;
size_t len;
char *fname;
ret = snprintf(fname, len, "%s/%s/config", lxcpath, cname);
if (ret < 0 || ret >= len)
/* $lxcpath + '/' + $cname + '/config' + \0 */
len = strlen(lxcpath) + strlen(cname) + 9;
fname = alloca(len);
ret = snprintf(fname, len, "%s/%s/config", lxcpath, cname);
if (ret < 0 || (size_t)ret >= len)
return false;
return file_exists(fname);