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Fix the last fix :)

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Signed-off-by: Adrien Gallouët <adrien@gallouet.fr>
This commit is contained in:
Adrien Gallouët
2020-03-25 07:32:34 +00:00
parent e0546ec46a
commit 28a978f276
1 changed files with 10 additions and 2 deletions
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12
src/tun.c
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@@ -131,14 +131,22 @@ tun_create_by_name(char *name, size_t len, const char *dev_name)
static int static int
tun_create_by_name(char *name, size_t len, const char *dev_name) tun_create_by_name(char *name, size_t len, const char *dev_name)
{ {
int ret = snprintf(name, len, "/dev/%s", dev_name); char tmp[64];
int ret = snprintf(name, len, "%s", dev_name);
if (ret <= 0 || (size_t)ret >= len) { if (ret <= 0 || (size_t)ret >= len) {
errno = EINVAL; errno = EINVAL;
return -1; return -1;
} }
return open(name, O_RDWR); ret = snprintf(tmp, sizeof(tmp), "/dev/%s", dev_name);
if (ret <= 0 || (size_t)ret >= sizeof(tmp)) {
errno = EINVAL;
return -1;
}
return open(tmp, O_RDWR);
} }
#endif /* not __APPLE__ */ #endif /* not __APPLE__ */