cppcheck: Make many pointers const
Newer versions of cppcheck (as of 2.12.0, at least) added a warning for pointers which could be declared to point at const data, but aren't. Based on that, make many pointers throughout the codebase const. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson
Stefano Brivio
parent
fc8f0f8c48
commit
6471c7d01b
18 changed files with 50 additions and 46 deletions
5
conf.c
5
conf.c
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@ -419,7 +419,8 @@ bind_fail:
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* @addr: Address found in /etc/resolv.conf
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* @conf: Pointer to reference of current entry in array of IPv4 resolvers
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*/
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static void add_dns4(struct ctx *c, struct in_addr *addr, struct in_addr **conf)
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static void add_dns4(struct ctx *c, const struct in_addr *addr,
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struct in_addr **conf)
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{
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/* Guest or container can only access local addresses via redirect */
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if (IN4_IS_ADDR_LOOPBACK(addr)) {
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@ -1177,7 +1178,7 @@ static void conf_ugid(char *runas, uid_t *uid, gid_t *gid)
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void conf(struct ctx *c, int argc, char **argv)
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{
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int netns_only = 0;
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struct option options[] = {
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const struct option options[] = {
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{"debug", no_argument, NULL, 'd' },
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{"quiet", no_argument, NULL, 'q' },
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{"foreground", no_argument, NULL, 'f' },
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@ -303,7 +303,7 @@ void isolate_user(uid_t uid, gid_t gid, bool use_userns, const char *userns,
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* Mustn't:
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* - Remove syscalls we need to daemonise
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*/
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int isolate_prefork(struct ctx *c)
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int isolate_prefork(const struct ctx *c)
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{
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int flags = CLONE_NEWIPC | CLONE_NEWNS | CLONE_NEWUTS;
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uint64_t ns_caps = 0;
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@ -10,7 +10,7 @@
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void isolate_initial(void);
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void isolate_user(uid_t uid, gid_t gid, bool use_userns, const char *userns,
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enum passt_modes mode);
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int isolate_prefork(struct ctx *c);
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int isolate_prefork(const struct ctx *c);
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void isolate_postfork(const struct ctx *c);
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#endif /* ISOLATION_H */
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6
log.c
6
log.c
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@ -216,7 +216,7 @@ void logfile_init(const char *name, const char *path, size_t size)
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*
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* #syscalls lseek ppc64le:_llseek ppc64:_llseek armv6l:_llseek armv7l:_llseek
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*/
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static void logfile_rotate_fallocate(int fd, struct timespec *ts)
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static void logfile_rotate_fallocate(int fd, const struct timespec *ts)
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{
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char buf[BUFSIZ], *nl;
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int n;
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@ -253,7 +253,7 @@ static void logfile_rotate_fallocate(int fd, struct timespec *ts)
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* #syscalls lseek ppc64le:_llseek ppc64:_llseek armv6l:_llseek armv7l:_llseek
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* #syscalls ftruncate
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*/
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static void logfile_rotate_move(int fd, struct timespec *ts)
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static void logfile_rotate_move(int fd, const struct timespec *ts)
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{
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int header_len, write_offset, end, discard, n;
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char buf[BUFSIZ], *nl;
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@ -318,7 +318,7 @@ out:
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*
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* fallocate() passed as EXTRA_SYSCALL only if FALLOC_FL_COLLAPSE_RANGE is there
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*/
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static int logfile_rotate(int fd, struct timespec *ts)
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static int logfile_rotate(int fd, const struct timespec *ts)
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{
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if (fcntl(fd, F_SETFL, O_RDWR /* Drop O_APPEND: explicit lseek() */))
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return -errno;
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@ -345,7 +345,7 @@ int nl_route_get_def(int s, unsigned int ifi, sa_family_t af, void *gw)
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*
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* Return: 0 on success, negative error code on failure
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*/
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int nl_route_set_def(int s, unsigned int ifi, sa_family_t af, void *gw)
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int nl_route_set_def(int s, unsigned int ifi, sa_family_t af, const void *gw)
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{
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struct req_t {
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struct nlmsghdr nlh;
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@ -593,7 +593,7 @@ int nl_addr_get(int s, unsigned int ifi, sa_family_t af,
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* Return: 0 on success, negative error code on failure
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*/
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int nl_addr_set(int s, unsigned int ifi, sa_family_t af,
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void *addr, int prefix_len)
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const void *addr, int prefix_len)
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{
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struct req_t {
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struct nlmsghdr nlh;
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@ -758,7 +758,7 @@ int nl_link_get_mac(int s, unsigned int ifi, void *mac)
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*
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* Return: 0 on success, negative error code on failure
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*/
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int nl_link_set_mac(int s, unsigned int ifi, void *mac)
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int nl_link_set_mac(int s, unsigned int ifi, const void *mac)
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{
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struct req_t {
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struct nlmsghdr nlh;
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@ -12,17 +12,17 @@ extern int nl_sock_ns;
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void nl_sock_init(const struct ctx *c, bool ns);
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unsigned int nl_get_ext_if(int s, sa_family_t af);
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int nl_route_get_def(int s, unsigned int ifi, sa_family_t af, void *gw);
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int nl_route_set_def(int s, unsigned int ifi, sa_family_t af, void *gw);
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int nl_route_set_def(int s, unsigned int ifi, sa_family_t af, const void *gw);
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int nl_route_dup(int s_src, unsigned int ifi_src,
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int s_dst, unsigned int ifi_dst, sa_family_t af);
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int nl_addr_get(int s, unsigned int ifi, sa_family_t af,
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void *addr, int *prefix_len, void *addr_l);
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int nl_addr_set(int s, unsigned int ifi, sa_family_t af,
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void *addr, int prefix_len);
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const void *addr, int prefix_len);
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int nl_addr_dup(int s_src, unsigned int ifi_src,
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int s_dst, unsigned int ifi_dst, sa_family_t af);
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int nl_link_get_mac(int s, unsigned int ifi, void *mac);
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int nl_link_set_mac(int s, unsigned int ifi, void *mac);
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int nl_link_set_mac(int s, unsigned int ifi, const void *mac);
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int nl_link_up(int s, unsigned int ifi, int mtu);
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#endif /* NETLINK_H */
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4
pasta.c
4
pasta.c
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@ -362,7 +362,7 @@ void pasta_ns_conf(struct ctx *c)
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*
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* Return: inotify file descriptor, -1 on failure or if not needed/applicable
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*/
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int pasta_netns_quit_init(struct ctx *c)
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int pasta_netns_quit_init(const struct ctx *c)
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{
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int flags = O_NONBLOCK | O_CLOEXEC;
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union epoll_ref ref = { .type = EPOLL_TYPE_NSQUIT };
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@ -399,7 +399,7 @@ int pasta_netns_quit_init(struct ctx *c)
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void pasta_netns_quit_handler(struct ctx *c, int inotify_fd)
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{
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char buf[sizeof(struct inotify_event) + NAME_MAX + 1];
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struct inotify_event *in_ev = (struct inotify_event *)buf;
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const struct inotify_event *in_ev = (struct inotify_event *)buf;
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if (read(inotify_fd, buf, sizeof(buf)) < (ssize_t)sizeof(*in_ev))
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return;
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2
pasta.h
2
pasta.h
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@ -13,7 +13,7 @@ void pasta_start_ns(struct ctx *c, uid_t uid, gid_t gid,
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int argc, char *argv[]);
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void pasta_ns_conf(struct ctx *c);
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void pasta_child_handler(int signal);
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int pasta_netns_quit_init(struct ctx *c);
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int pasta_netns_quit_init(const struct ctx *c);
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void pasta_netns_quit_handler(struct ctx *c, int inotify_fd);
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#endif /* PASTA_H */
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14
tap.c
14
tap.c
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@ -203,7 +203,7 @@ void tap_udp4_send(const struct ctx *c, struct in_addr src, in_port_t sport,
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* @len: ICMP packet length, including ICMP header
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*/
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void tap_icmp4_send(const struct ctx *c, struct in_addr src, struct in_addr dst,
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void *in, size_t len)
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const void *in, size_t len)
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{
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char buf[USHRT_MAX];
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void *ip4h = tap_push_l2h(c, buf, ETH_P_IP);
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@ -291,7 +291,7 @@ void tap_udp6_send(const struct ctx *c,
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*/
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void tap_icmp6_send(const struct ctx *c,
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const struct in6_addr *src, const struct in6_addr *dst,
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void *in, size_t len)
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const void *in, size_t len)
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{
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char buf[USHRT_MAX];
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void *ip6h = tap_push_l2h(c, buf, ETH_P_IPV6);
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@ -315,7 +315,7 @@ void tap_icmp6_send(const struct ctx *c,
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*
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* #syscalls:pasta write
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*/
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static size_t tap_send_frames_pasta(struct ctx *c,
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static size_t tap_send_frames_pasta(const struct ctx *c,
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const struct iovec *iov, size_t n)
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{
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size_t i;
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@ -414,7 +414,7 @@ static size_t tap_send_frames_passt(const struct ctx *c,
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* @iov: Array of buffers, each containing one frame (with L2 headers)
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* @n: Number of buffers/frames in @iov
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*/
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void tap_send_frames(struct ctx *c, const struct iovec *iov, size_t n)
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void tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
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{
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size_t m;
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@ -706,7 +706,7 @@ append:
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}
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for (j = 0, seq = tap4_l4; j < seq_count; j++, seq++) {
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struct pool *p = (struct pool *)&seq->p;
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const struct pool *p = (const struct pool *)&seq->p;
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size_t k;
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tap_packet_debug(NULL, NULL, seq, 0, NULL, p->count);
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@ -869,7 +869,7 @@ append:
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}
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for (j = 0, seq = tap6_l4; j < seq_count; j++, seq++) {
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struct pool *p = (struct pool *)&seq->p;
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const struct pool *p = (const struct pool *)&seq->p;
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size_t k;
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tap_packet_debug(NULL, NULL, NULL, seq->protocol, seq,
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@ -1022,7 +1022,7 @@ redo:
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pool_flush(pool_tap6);
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restart:
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while ((len = read(c->fd_tap, pkt_buf + n, TAP_BUF_BYTES - n)) > 0) {
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struct ethhdr *eh = (struct ethhdr *)(pkt_buf + n);
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const struct ethhdr *eh = (struct ethhdr *)(pkt_buf + n);
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if (len < (ssize_t)sizeof(*eh) || len > (ssize_t)ETH_MAX_MTU) {
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n += len;
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6
tap.h
6
tap.h
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@ -62,7 +62,7 @@ void tap_udp4_send(const struct ctx *c, struct in_addr src, in_port_t sport,
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struct in_addr dst, in_port_t dport,
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const void *in, size_t len);
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void tap_icmp4_send(const struct ctx *c, struct in_addr src, struct in_addr dst,
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void *in, size_t len);
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const void *in, size_t len);
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const struct in6_addr *tap_ip6_daddr(const struct ctx *c,
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const struct in6_addr *src);
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void tap_udp6_send(const struct ctx *c,
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@ -71,9 +71,9 @@ void tap_udp6_send(const struct ctx *c,
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uint32_t flow, const void *in, size_t len);
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void tap_icmp6_send(const struct ctx *c,
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const struct in6_addr *src, const struct in6_addr *dst,
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void *in, size_t len);
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const void *in, size_t len);
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int tap_send(const struct ctx *c, const void *data, size_t len);
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void tap_send_frames(struct ctx *c, const struct iovec *iov, size_t n);
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void tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n);
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void tap_update_mac(struct tap_hdr *taph,
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const unsigned char *eth_d, const unsigned char *eth_s);
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void tap_listen_handler(struct ctx *c, uint32_t events);
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18
tcp.c
18
tcp.c
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@ -1016,7 +1016,7 @@ void tcp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s)
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* tcp_sock4_iov_init() - Initialise scatter-gather L2 buffers for IPv4 sockets
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* @c: Execution context
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*/
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static void tcp_sock4_iov_init(struct ctx *c)
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static void tcp_sock4_iov_init(const struct ctx *c)
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{
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struct iphdr iph = L2_BUF_IP4_INIT(IPPROTO_TCP);
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struct iovec *iov;
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@ -1237,7 +1237,7 @@ static void tcp_hash_remove(const struct ctx *c,
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* @old: Old location of tcp_tap_conn
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* @new: New location of tcp_tap_conn
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*/
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static void tcp_tap_conn_update(struct ctx *c, struct tcp_tap_conn *old,
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static void tcp_tap_conn_update(const struct ctx *c, struct tcp_tap_conn *old,
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struct tcp_tap_conn *new)
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{
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struct tcp_tap_conn *entry, *prev = NULL;
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@ -1327,7 +1327,7 @@ void tcp_table_compact(struct ctx *c, union tcp_conn *hole)
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*/
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static void tcp_conn_destroy(struct ctx *c, union tcp_conn *conn_union)
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{
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struct tcp_tap_conn *conn = &conn_union->tap;
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const struct tcp_tap_conn *conn = &conn_union->tap;
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close(conn->sock);
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if (conn->timer != -1)
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@ -1349,7 +1349,7 @@ static void tcp_rst_do(struct ctx *c, struct tcp_tap_conn *conn);
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* tcp_l2_flags_buf_flush() - Send out buffers for segments with no data (flags)
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* @c: Execution context
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*/
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static void tcp_l2_flags_buf_flush(struct ctx *c)
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static void tcp_l2_flags_buf_flush(const struct ctx *c)
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{
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tap_send_frames(c, tcp6_l2_flags_iov, tcp6_l2_flags_buf_used);
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tcp6_l2_flags_buf_used = 0;
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@ -1362,7 +1362,7 @@ static void tcp_l2_flags_buf_flush(struct ctx *c)
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* tcp_l2_data_buf_flush() - Send out buffers for segments with data
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* @c: Execution context
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*/
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static void tcp_l2_data_buf_flush(struct ctx *c)
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static void tcp_l2_data_buf_flush(const struct ctx *c)
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{
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tap_send_frames(c, tcp6_l2_iov, tcp6_l2_buf_used);
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tcp6_l2_buf_used = 0;
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@ -2098,7 +2098,7 @@ static void tcp_conn_from_tap(struct ctx *c,
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*
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* Return: 0 on success, negative error code from recv() on failure
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*/
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static int tcp_sock_consume(struct tcp_tap_conn *conn, uint32_t ack_seq)
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static int tcp_sock_consume(const struct tcp_tap_conn *conn, uint32_t ack_seq)
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{
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/* Simply ignore out-of-order ACKs: we already consumed the data we
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* needed from the buffer, and we won't rewind back to a lower ACK
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@ -2124,14 +2124,14 @@ static int tcp_sock_consume(struct tcp_tap_conn *conn, uint32_t ack_seq)
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* @seq: Sequence number to be sent
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* @now: Current timestamp
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*/
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static void tcp_data_to_tap(struct ctx *c, struct tcp_tap_conn *conn,
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static void tcp_data_to_tap(const struct ctx *c, struct tcp_tap_conn *conn,
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ssize_t plen, int no_csum, uint32_t seq)
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{
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struct iovec *iov;
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if (CONN_V4(conn)) {
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struct tcp4_l2_buf_t *b = &tcp4_l2_buf[tcp4_l2_buf_used];
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uint16_t *check = no_csum ? &(b - 1)->iph.check : NULL;
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const uint16_t *check = no_csum ? &(b - 1)->iph.check : NULL;
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iov = tcp4_l2_iov + tcp4_l2_buf_used++;
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iov->iov_len = tcp_l2_buf_fill_headers(c, conn, b, plen,
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@ -2704,7 +2704,7 @@ static void tcp_snat_inbound(const struct ctx *c, union inany_addr *addr)
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static void tcp_tap_conn_from_sock(struct ctx *c,
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union tcp_listen_epoll_ref ref,
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struct tcp_tap_conn *conn, int s,
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struct sockaddr *sa,
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const struct sockaddr *sa,
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const struct timespec *now)
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{
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conn->c.spliced = false;
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@ -190,7 +190,7 @@ extern union tcp_conn tc[];
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extern int init_sock_pool4 [TCP_SOCK_POOL_SIZE];
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extern int init_sock_pool6 [TCP_SOCK_POOL_SIZE];
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void tcp_splice_conn_update(struct ctx *c, struct tcp_splice_conn *new);
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void tcp_splice_conn_update(const struct ctx *c, struct tcp_splice_conn *new);
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void tcp_table_compact(struct ctx *c, union tcp_conn *hole);
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void tcp_splice_destroy(struct ctx *c, union tcp_conn *conn_union);
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void tcp_splice_timer(struct ctx *c, union tcp_conn *conn_union);
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@ -253,7 +253,7 @@ static void conn_event_do(const struct ctx *c, struct tcp_splice_conn *conn,
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* @c: Execution context
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* @new: New location of tcp_splice_conn
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*/
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void tcp_splice_conn_update(struct ctx *c, struct tcp_splice_conn *new)
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void tcp_splice_conn_update(const struct ctx *c, struct tcp_splice_conn *new)
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{
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tcp_splice_epoll_ctl(c, new);
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if (tcp_splice_epoll_ctl(c, new))
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@ -486,7 +486,8 @@ static void tcp_splice_dir(struct tcp_splice_conn *conn, int ref_sock,
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* Return: true if able to create a spliced connection, false otherwise
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* #syscalls:pasta setsockopt
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*/
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bool tcp_splice_conn_from_sock(struct ctx *c, union tcp_listen_epoll_ref ref,
|
||||
bool tcp_splice_conn_from_sock(const struct ctx *c,
|
||||
union tcp_listen_epoll_ref ref,
|
||||
struct tcp_splice_conn *conn, int s,
|
||||
const struct sockaddr *sa)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -10,7 +10,8 @@ struct tcp_splice_conn;
|
|||
|
||||
void tcp_splice_sock_handler(struct ctx *c, struct tcp_splice_conn *conn,
|
||||
int s, uint32_t events);
|
||||
bool tcp_splice_conn_from_sock(struct ctx *c, union tcp_listen_epoll_ref ref,
|
||||
bool tcp_splice_conn_from_sock(const struct ctx *c,
|
||||
union tcp_listen_epoll_ref ref,
|
||||
struct tcp_splice_conn *conn, int s,
|
||||
const struct sockaddr *sa);
|
||||
void tcp_splice_init(struct ctx *c);
|
||||
|
|
|
|||
4
udp.c
4
udp.c
|
|
@ -691,7 +691,7 @@ static size_t udp_update_hdr6(const struct ctx *c, int n, in_port_t dstport,
|
|||
*
|
||||
* Return: size of tap frame with headers
|
||||
*/
|
||||
static void udp_tap_send(struct ctx *c,
|
||||
static void udp_tap_send(const struct ctx *c,
|
||||
unsigned int start, unsigned int n,
|
||||
in_port_t dstport, bool v6, const struct timespec *now)
|
||||
{
|
||||
|
|
@ -726,7 +726,7 @@ static void udp_tap_send(struct ctx *c,
|
|||
*
|
||||
* #syscalls recvmmsg
|
||||
*/
|
||||
void udp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events,
|
||||
void udp_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t events,
|
||||
const struct timespec *now)
|
||||
{
|
||||
/* For not entirely clear reasons (data locality?) pasta gets
|
||||
|
|
|
|||
2
udp.h
2
udp.h
|
|
@ -8,7 +8,7 @@
|
|||
|
||||
#define UDP_TIMER_INTERVAL 1000 /* ms */
|
||||
|
||||
void udp_sock_handler(struct ctx *c, union epoll_ref ref, uint32_t events,
|
||||
void udp_sock_handler(const struct ctx *c, union epoll_ref ref, uint32_t events,
|
||||
const struct timespec *now);
|
||||
int udp_tap_handler(struct ctx *c, int af, const void *saddr, const void *daddr,
|
||||
const struct pool *p, int idx, const struct timespec *now);
|
||||
|
|
|
|||
5
util.c
5
util.c
|
|
@ -320,7 +320,8 @@ void bitmap_clear(uint8_t *map, int bit)
|
|||
*/
|
||||
int bitmap_isset(const uint8_t *map, int bit)
|
||||
{
|
||||
unsigned long *word = (unsigned long *)map + BITMAP_WORD(bit);
|
||||
const unsigned long *word
|
||||
= (const unsigned long *)map + BITMAP_WORD(bit);
|
||||
|
||||
return !!(*word & BITMAP_BIT(bit));
|
||||
}
|
||||
|
|
@ -337,7 +338,7 @@ int bitmap_isset(const uint8_t *map, int bit)
|
|||
* #syscalls:pasta ppc64le:_llseek ppc64:_llseek armv6l:_llseek armv7l:_llseek
|
||||
*/
|
||||
void procfs_scan_listen(struct ctx *c, uint8_t proto, int ip_version, int ns,
|
||||
uint8_t *map, uint8_t *exclude)
|
||||
uint8_t *map, const uint8_t *exclude)
|
||||
{
|
||||
char *path, *line;
|
||||
struct lineread lr;
|
||||
|
|
|
|||
4
util.h
4
util.h
|
|
@ -218,7 +218,7 @@ void bitmap_clear(uint8_t *map, int bit);
|
|||
int bitmap_isset(const uint8_t *map, int bit);
|
||||
char *line_read(char *buf, size_t len, int fd);
|
||||
void procfs_scan_listen(struct ctx *c, uint8_t proto, int ip_version, int ns,
|
||||
uint8_t *map, uint8_t *exclude);
|
||||
uint8_t *map, const uint8_t *exclude);
|
||||
void ns_enter(const struct ctx *c);
|
||||
bool ns_is_init(void);
|
||||
void write_pidfile(int fd, pid_t pid);
|
||||
|
|
@ -235,7 +235,7 @@ int write_file(const char *path, const char *buf);
|
|||
* clang-tidy suppressions, because the warning doesn't show on the syscall
|
||||
* itself but later when we access the supposedly uninitialised field.
|
||||
*/
|
||||
static inline void sa_init(struct sockaddr *sa, socklen_t *sl)
|
||||
static inline void sa_init(struct sockaddr *sa, const socklen_t *sl)
|
||||
{
|
||||
#ifdef CLANG_TIDY_58992
|
||||
if (sa)
|
||||
|
|
|
|||
Loading…
Reference in a new issue