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IFNAMSIZ includes terminating 0 

http://www.delorie.com/gnu/docs/glibc/libc_308.html
thus reverting devname to IFNAMSIZ
and making sure (*tun)->devname[IFNAMSIZ-1] = 0;

Signed-off-by: Emmanuel Bretelle <chantra@debuntu.org>
This commit is contained in:
Emmanuel Bretelle 2010-09-07 20:22:36 +02:00 committed by Harald Welte
parent 4e56c83be2
commit 87490d7fa9
2 changed files with 2 additions and 2 deletions
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2
lib/tun.c
View File

@ -688,7 +688,7 @@ int tun_new(struct tun_t **tun)
}
strncpy((*tun)->devname, ifr.ifr_name, IFNAMSIZ);
(*tun)->devname[IFNAMSIZ] = 0;
(*tun)->devname[IFNAMSIZ-1] = 0;
ioctl((*tun)->fd, TUNSETNOCSUM, 1); /* Disable checksums */
return 0;

2
lib/tun.h
View File

@ -45,7 +45,7 @@ struct tun_t {
struct in_addr netmask;
int addrs; /* Number of allocated IP addresses */
int routes; /* One if we allocated an automatic route */
char devname[IFNAMSIZ+1];/* Name of the tun device */
char devname[IFNAMSIZ];/* Name of the tun device */
int (*cb_ind) (struct tun_t *tun, void *pack, unsigned len);
};