Make functions and structs dealing with string literals const correct.
This allows the compiler to check if someone writes into string literals. Signed-off-by: Stephan Gatzka <stephan.gatzka@gmail.com>master
parent
886112e202
commit
110849d422
2
msg.c
2
msg.c
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@ -379,7 +379,7 @@ int msg_pre_send(struct ptp_message *m)
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return 0;
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}
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char *msg_type_string(int type)
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const char *msg_type_string(int type)
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{
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switch (type) {
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case SYNC:
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2
msg.h
2
msg.h
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@ -298,7 +298,7 @@ int msg_pre_send(struct ptp_message *m);
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* @param type Value of the messageType field as returned by @ref msg_type().
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* @return String describing the message type.
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*/
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char *msg_type_string(int type);
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const char *msg_type_string(int type);
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/**
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* Print messages for debugging purposes.
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5
pmc.c
5
pmc.c
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@ -109,7 +109,7 @@ struct management_id idtab[] = {
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{ "PORT_DATA_SET_NP", PORT_DATA_SET_NP, do_set_action },
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};
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static char *action_string[] = {
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static const char *action_string[] = {
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"GET",
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"SET",
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"RESPONSE",
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@ -711,7 +711,8 @@ static void usage(char *progname)
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int main(int argc, char *argv[])
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{
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char *iface_name = NULL, *progname;
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const char *iface_name = NULL;
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char *progname;
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int c, cnt, length, tmo = -1, batch_mode = 0, zero_datalen = 0;
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char line[1024], *command = NULL;
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enum transport_type transport_type = TRANS_UDP_IPV4;
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@ -61,7 +61,7 @@ struct pmc {
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int zero_length_gets;
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};
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struct pmc *pmc_create(enum transport_type transport_type, char *iface_name,
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struct pmc *pmc_create(enum transport_type transport_type, const char *iface_name,
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UInteger8 boundary_hops, UInteger8 domain_number,
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UInteger8 transport_specific, int zero_datalen)
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{
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@ -25,7 +25,7 @@
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struct pmc;
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struct pmc *pmc_create(enum transport_type transport_type, char *iface_name,
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struct pmc *pmc_create(enum transport_type transport_type, const char *iface_name,
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UInteger8 boundary_hops, UInteger8 domain_number,
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UInteger8 transport_specific, int zero_datalen);
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4
raw.c
4
raw.c
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@ -148,7 +148,7 @@ static int raw_close(struct transport *t, struct fdarray *fda)
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unsigned char ptp_dst_mac[MAC_LEN] = { PTP_DST_MAC };
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unsigned char p2p_dst_mac[MAC_LEN] = { P2P_DST_MAC };
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static int open_socket(char *name, int event)
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static int open_socket(const char *name, int event)
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{
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struct sockaddr_ll addr;
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int fd, index;
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@ -184,7 +184,7 @@ no_socket:
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return -1;
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}
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static int raw_open(struct transport *t, char *name,
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static int raw_open(struct transport *t, const char *name,
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struct fdarray *fda, enum timestamp_type ts_type)
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{
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struct raw *raw = container_of(t, struct raw, t);
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12
sk.c
12
sk.c
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@ -40,7 +40,7 @@ int sk_check_fupsync;
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/* private methods */
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static int hwts_init(int fd, char *device, int rx_filter, int one_step)
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static int hwts_init(int fd, const char *device, int rx_filter, int one_step)
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{
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struct ifreq ifreq;
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struct hwtstamp_config cfg, req;
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@ -77,7 +77,7 @@ static int hwts_init(int fd, char *device, int rx_filter, int one_step)
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/* public methods */
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int sk_interface_index(int fd, char *name)
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int sk_interface_index(int fd, const char *name)
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{
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struct ifreq ifreq;
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int err;
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@ -102,7 +102,7 @@ int sk_general_init(int fd)
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return 0;
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}
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int sk_get_ts_info(char *name, struct sk_ts_info *sk_info)
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int sk_get_ts_info(const char *name, struct sk_ts_info *sk_info)
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{
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#ifdef ETHTOOL_GET_TS_INFO
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struct ethtool_ts_info info;
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@ -146,7 +146,7 @@ failed:
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return -1;
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}
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int sk_interface_macaddr(char *name, unsigned char *mac, int len)
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int sk_interface_macaddr(const char *name, unsigned char *mac, int len)
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{
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struct ifreq ifreq;
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int err, fd;
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@ -172,7 +172,7 @@ int sk_interface_macaddr(char *name, unsigned char *mac, int len)
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return 0;
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}
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int sk_interface_addr(char *name, int family, uint8_t *addr, int len)
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int sk_interface_addr(const char *name, int family, uint8_t *addr, int len)
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{
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struct ifaddrs *ifaddr, *i;
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int copy_len, result = -1;
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@ -285,7 +285,7 @@ int sk_receive(int fd, void *buf, int buflen,
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return cnt;
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}
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int sk_timestamping_init(int fd, char *device, enum timestamp_type type,
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int sk_timestamping_init(int fd, const char *device, enum timestamp_type type,
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enum transport_type transport)
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{
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int err, filter1, filter2 = 0, flags, one_step;
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10
sk.h
10
sk.h
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@ -44,7 +44,7 @@ struct sk_ts_info {
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* @param device The name of the network interface of interest.
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* @return The result from the SIOCGIFINDEX ioctl.
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*/
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int sk_interface_index(int fd, char *device);
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int sk_interface_index(int fd, const char *device);
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/**
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* Prepare a given socket for PTP "general" messages.
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@ -59,7 +59,7 @@ int sk_general_init(int fd);
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* @param info Struct containing obtained timestamping information.
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* @return zero on success, negative on failure.
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*/
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int sk_get_ts_info(char *name, struct sk_ts_info *sk_info);
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int sk_get_ts_info(const char *name, struct sk_ts_info *sk_info);
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/**
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* Obtain the MAC address of a network interface.
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@ -68,7 +68,7 @@ int sk_get_ts_info(char *name, struct sk_ts_info *sk_info);
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* @param len Length of 'mac'
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* @return Zero on success, non-zero otherwise.
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*/
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int sk_interface_macaddr(char *name, unsigned char *mac, int len);
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int sk_interface_macaddr(const char *name, unsigned char *mac, int len);
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/**
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* Obtains the first IP address assigned to a network interface.
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@ -78,7 +78,7 @@ int sk_interface_macaddr(char *name, unsigned char *mac, int len);
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* @param len Length of 'addr'
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* @return The number of bytes written to addr on success, -1 otherwise.
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*/
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int sk_interface_addr(char *name, int family, uint8_t *addr, int len);
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int sk_interface_addr(const char *name, int family, uint8_t *addr, int len);
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/**
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* Read a message from a socket.
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@ -100,7 +100,7 @@ int sk_receive(int fd, void *buf, int buflen,
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* @param transport The type of transport used.
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* @return Zero on success, non-zero otherwise.
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*/
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int sk_timestamping_init(int fd, char *device, enum timestamp_type type,
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int sk_timestamping_init(int fd, const char *device, enum timestamp_type type,
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enum transport_type transport);
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/**
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@ -29,7 +29,7 @@ int transport_close(struct transport *t, struct fdarray *fda)
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return t->close(t, fda);
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}
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int transport_open(struct transport *t, char *name,
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int transport_open(struct transport *t, const char *name,
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struct fdarray *fda, enum timestamp_type tt)
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{
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return t->open(t, name, fda, tt);
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@ -64,7 +64,7 @@ struct transport;
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int transport_close(struct transport *t, struct fdarray *fda);
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int transport_open(struct transport *t, char *name,
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int transport_open(struct transport *t, const char *name,
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struct fdarray *fda, enum timestamp_type tt);
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int transport_recv(struct transport *t, int fd,
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@ -30,7 +30,7 @@ struct transport {
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int (*close)(struct transport *t, struct fdarray *fda);
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int (*open)(struct transport *t, char *name, struct fdarray *fda,
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int (*open)(struct transport *t, const char *name, struct fdarray *fda,
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enum timestamp_type tt);
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int (*recv)(struct transport *t, int fd, void *buf, int buflen,
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4
udp.c
4
udp.c
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@ -93,7 +93,7 @@ static int udp_close(struct transport *t, struct fdarray *fda)
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return 0;
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}
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static int open_socket(char *name, struct in_addr mc_addr[2], short port)
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static int open_socket(const char *name, struct in_addr mc_addr[2], short port)
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{
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struct sockaddr_in addr;
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int fd, index, on = 1;
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@ -148,7 +148,7 @@ enum { MC_PRIMARY, MC_PDELAY };
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static struct in_addr mcast_addr[2];
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static int udp_open(struct transport *t, char *name, struct fdarray *fda,
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static int udp_open(struct transport *t, const char *name, struct fdarray *fda,
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enum timestamp_type ts_type)
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{
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struct udp *udp = container_of(t, struct udp, t);
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4
udp6.c
4
udp6.c
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@ -100,7 +100,7 @@ static int udp6_close(struct transport *t, struct fdarray *fda)
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return 0;
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}
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static int open_socket_ipv6(char *name, struct in6_addr mc_addr[2], short port,
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static int open_socket_ipv6(const char *name, struct in6_addr mc_addr[2], short port,
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int *interface_index)
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{
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struct sockaddr_in6 addr;
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@ -158,7 +158,7 @@ enum { MC_PRIMARY, MC_PDELAY };
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static struct in6_addr mc6_addr[2];
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static int udp6_open(struct transport *t, char *name, struct fdarray *fda,
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static int udp6_open(struct transport *t, const char *name, struct fdarray *fda,
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enum timestamp_type ts_type)
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{
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struct udp6 *udp6 = container_of(t, struct udp6, t);
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2
uds.c
2
uds.c
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@ -46,7 +46,7 @@ static int uds_close(struct transport *t, struct fdarray *fda)
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return 0;
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}
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static int uds_open(struct transport *t, char *name, struct fdarray *fda,
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static int uds_open(struct transport *t, const char *name, struct fdarray *fda,
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enum timestamp_type tt)
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{
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int fd, err;
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6
util.c
6
util.c
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@ -28,7 +28,7 @@
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#define NS_PER_HOUR (3600 * NS_PER_SEC)
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#define NS_PER_DAY (24 * NS_PER_HOUR)
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char *ps_str[] = {
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const char *ps_str[] = {
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"NONE",
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"INITIALIZING",
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"FAULTY",
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"GRAND_MASTER",
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};
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char *ev_str[] = {
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const char *ev_str[] = {
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"NONE",
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"POWERUP",
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"INITIALIZE",
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@ -98,7 +98,7 @@ int str2pid(const char *s, struct PortIdentity *result)
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return -1;
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}
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int generate_clock_identity(struct ClockIdentity *ci, char *name)
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int generate_clock_identity(struct ClockIdentity *ci, const char *name)
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{
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unsigned char mac[6];
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if (sk_interface_macaddr(name, mac, sizeof(mac)))
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6
util.h
6
util.h
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@ -26,12 +26,12 @@
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/**
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* Table of human readable strings, one for each port state.
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*/
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extern char *ps_str[];
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extern const char *ps_str[];
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/**
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* Table of human readable strings, one for each port event.
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*/
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extern char *ev_str[];
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extern const char *ev_str[];
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/**
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* Convert a clock identity into a human readable string.
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*/
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int str2pid(const char *s, struct PortIdentity *result);
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int generate_clock_identity(struct ClockIdentity *ci, char *name);
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int generate_clock_identity(struct ClockIdentity *ci, const char *name);
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/**
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* Copies a PTPText to a static_ptp_text. This copies the text into
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