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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
Stephan Gatzka 2014-02-07 17:52:03 +01:00 committed by Richard Cochran
parent 886112e202
commit 110849d422
16 changed files with 34 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
msg.c
View File

@ -379,7 +379,7 @@ int msg_pre_send(struct ptp_message *m)
return 0;
}
char *msg_type_string(int type)
const char *msg_type_string(int type)
{
switch (type) {
case SYNC:

2
msg.h
View File

@ -298,7 +298,7 @@ int msg_pre_send(struct ptp_message *m);
* @param type Value of the messageType field as returned by @ref msg_type().
* @return String describing the message type.
*/
char *msg_type_string(int type);
const char *msg_type_string(int type);
/**
* Print messages for debugging purposes.

5
pmc.c
View File

@ -109,7 +109,7 @@ struct management_id idtab[] = {
{ "PORT_DATA_SET_NP", PORT_DATA_SET_NP, do_set_action },
};
static char *action_string[] = {
static const char *action_string[] = {
"GET",
"SET",
"RESPONSE",
@ -711,7 +711,8 @@ static void usage(char *progname)
int main(int argc, char *argv[])
{
char *iface_name = NULL, *progname;
const char *iface_name = NULL;
char *progname;
int c, cnt, length, tmo = -1, batch_mode = 0, zero_datalen = 0;
char line[1024], *command = NULL;
enum transport_type transport_type = TRANS_UDP_IPV4;

2
pmc_common.c
View File

@ -61,7 +61,7 @@ struct pmc {
int zero_length_gets;
};
struct pmc *pmc_create(enum transport_type transport_type, char *iface_name,
struct pmc *pmc_create(enum transport_type transport_type, const char *iface_name,
UInteger8 boundary_hops, UInteger8 domain_number,
UInteger8 transport_specific, int zero_datalen)
{

2
pmc_common.h
View File

@ -25,7 +25,7 @@
struct pmc;
struct pmc *pmc_create(enum transport_type transport_type, char *iface_name,
struct pmc *pmc_create(enum transport_type transport_type, const char *iface_name,
UInteger8 boundary_hops, UInteger8 domain_number,
UInteger8 transport_specific, int zero_datalen);

4
raw.c
View File

@ -148,7 +148,7 @@ static int raw_close(struct transport *t, struct fdarray *fda)
unsigned char ptp_dst_mac[MAC_LEN] = { PTP_DST_MAC };
unsigned char p2p_dst_mac[MAC_LEN] = { P2P_DST_MAC };
static int open_socket(char *name, int event)
static int open_socket(const char *name, int event)
{
struct sockaddr_ll addr;
int fd, index;
@ -184,7 +184,7 @@ no_socket:
return -1;
}
static int raw_open(struct transport *t, char *name,
static int raw_open(struct transport *t, const char *name,
struct fdarray *fda, enum timestamp_type ts_type)
{
struct raw *raw = container_of(t, struct raw, t);

12
sk.c
View File

@ -40,7 +40,7 @@ int sk_check_fupsync;
/* private methods */
static int hwts_init(int fd, char *device, int rx_filter, int one_step)
static int hwts_init(int fd, const char *device, int rx_filter, int one_step)
{
struct ifreq ifreq;
struct hwtstamp_config cfg, req;
@ -77,7 +77,7 @@ static int hwts_init(int fd, char *device, int rx_filter, int one_step)
/* public methods */
int sk_interface_index(int fd, char *name)
int sk_interface_index(int fd, const char *name)
{
struct ifreq ifreq;
int err;
@ -102,7 +102,7 @@ int sk_general_init(int fd)
return 0;
}
int sk_get_ts_info(char *name, struct sk_ts_info *sk_info)
int sk_get_ts_info(const char *name, struct sk_ts_info *sk_info)
{
#ifdef ETHTOOL_GET_TS_INFO
struct ethtool_ts_info info;
@ -146,7 +146,7 @@ failed:
return -1;
}
int sk_interface_macaddr(char *name, unsigned char *mac, int len)
int sk_interface_macaddr(const char *name, unsigned char *mac, int len)
{
struct ifreq ifreq;
int err, fd;
@ -172,7 +172,7 @@ int sk_interface_macaddr(char *name, unsigned char *mac, int len)
return 0;
}
int sk_interface_addr(char *name, int family, uint8_t *addr, int len)
int sk_interface_addr(const char *name, int family, uint8_t *addr, int len)
{
struct ifaddrs *ifaddr, *i;
int copy_len, result = -1;
@ -285,7 +285,7 @@ int sk_receive(int fd, void *buf, int buflen,
return cnt;
}
int sk_timestamping_init(int fd, char *device, enum timestamp_type type,
int sk_timestamping_init(int fd, const char *device, enum timestamp_type type,
enum transport_type transport)
{
int err, filter1, filter2 = 0, flags, one_step;

10
sk.h
View File

@ -44,7 +44,7 @@ struct sk_ts_info {
* @param device The name of the network interface of interest.
* @return The result from the SIOCGIFINDEX ioctl.
*/
int sk_interface_index(int fd, char *device);
int sk_interface_index(int fd, const char *device);
/**
* Prepare a given socket for PTP "general" messages.
@ -59,7 +59,7 @@ int sk_general_init(int fd);
* @param info Struct containing obtained timestamping information.
* @return zero on success, negative on failure.
*/
int sk_get_ts_info(char *name, struct sk_ts_info *sk_info);
int sk_get_ts_info(const char *name, struct sk_ts_info *sk_info);
/**
* Obtain the MAC address of a network interface.
@ -68,7 +68,7 @@ int sk_get_ts_info(char *name, struct sk_ts_info *sk_info);
* @param len Length of 'mac'
* @return Zero on success, non-zero otherwise.
*/
int sk_interface_macaddr(char *name, unsigned char *mac, int len);
int sk_interface_macaddr(const char *name, unsigned char *mac, int len);
/**
* Obtains the first IP address assigned to a network interface.
@ -78,7 +78,7 @@ int sk_interface_macaddr(char *name, unsigned char *mac, int len);
* @param len Length of 'addr'
* @return The number of bytes written to addr on success, -1 otherwise.
*/
int sk_interface_addr(char *name, int family, uint8_t *addr, int len);
int sk_interface_addr(const char *name, int family, uint8_t *addr, int len);
/**
* Read a message from a socket.
@ -100,7 +100,7 @@ int sk_receive(int fd, void *buf, int buflen,
* @param transport The type of transport used.
* @return Zero on success, non-zero otherwise.
*/
int sk_timestamping_init(int fd, char *device, enum timestamp_type type,
int sk_timestamping_init(int fd, const char *device, enum timestamp_type type,
enum transport_type transport);
/**

2
transport.c
View File

@ -29,7 +29,7 @@ int transport_close(struct transport *t, struct fdarray *fda)
return t->close(t, fda);
}
int transport_open(struct transport *t, char *name,
int transport_open(struct transport *t, const char *name,
struct fdarray *fda, enum timestamp_type tt)
{
return t->open(t, name, fda, tt);

2
transport.h
View File

@ -64,7 +64,7 @@ struct transport;
int transport_close(struct transport *t, struct fdarray *fda);
int transport_open(struct transport *t, char *name,
int transport_open(struct transport *t, const char *name,
struct fdarray *fda, enum timestamp_type tt);
int transport_recv(struct transport *t, int fd,

2
transport_private.h
View File

@ -30,7 +30,7 @@ struct transport {
int (*close)(struct transport *t, struct fdarray *fda);
int (*open)(struct transport *t, char *name, struct fdarray *fda,
int (*open)(struct transport *t, const char *name, struct fdarray *fda,
enum timestamp_type tt);
int (*recv)(struct transport *t, int fd, void *buf, int buflen,

4
udp.c
View File

@ -93,7 +93,7 @@ static int udp_close(struct transport *t, struct fdarray *fda)
return 0;
}
static int open_socket(char *name, struct in_addr mc_addr[2], short port)
static int open_socket(const char *name, struct in_addr mc_addr[2], short port)
{
struct sockaddr_in addr;
int fd, index, on = 1;
@ -148,7 +148,7 @@ enum { MC_PRIMARY, MC_PDELAY };
static struct in_addr mcast_addr[2];
static int udp_open(struct transport *t, char *name, struct fdarray *fda,
static int udp_open(struct transport *t, const char *name, struct fdarray *fda,
enum timestamp_type ts_type)
{
struct udp *udp = container_of(t, struct udp, t);

4
udp6.c
View File

@ -100,7 +100,7 @@ static int udp6_close(struct transport *t, struct fdarray *fda)
return 0;
}
static int open_socket_ipv6(char *name, struct in6_addr mc_addr[2], short port,
static int open_socket_ipv6(const char *name, struct in6_addr mc_addr[2], short port,
int *interface_index)
{
struct sockaddr_in6 addr;
@ -158,7 +158,7 @@ enum { MC_PRIMARY, MC_PDELAY };
static struct in6_addr mc6_addr[2];
static int udp6_open(struct transport *t, char *name, struct fdarray *fda,
static int udp6_open(struct transport *t, const char *name, struct fdarray *fda,
enum timestamp_type ts_type)
{
struct udp6 *udp6 = container_of(t, struct udp6, t);

2
uds.c
View File

@ -46,7 +46,7 @@ static int uds_close(struct transport *t, struct fdarray *fda)
return 0;
}
static int uds_open(struct transport *t, char *name, struct fdarray *fda,
static int uds_open(struct transport *t, const char *name, struct fdarray *fda,
enum timestamp_type tt)
{
int fd, err;

6
util.c
View File

@ -28,7 +28,7 @@
#define NS_PER_HOUR (3600 * NS_PER_SEC)
#define NS_PER_DAY (24 * NS_PER_HOUR)
char *ps_str[] = {
const char *ps_str[] = {
"NONE",
"INITIALIZING",
"FAULTY",
@ -42,7 +42,7 @@ char *ps_str[] = {
"GRAND_MASTER",
};
char *ev_str[] = {
const char *ev_str[] = {
"NONE",
"POWERUP",
"INITIALIZE",
@ -98,7 +98,7 @@ int str2pid(const char *s, struct PortIdentity *result)
return -1;
}
int generate_clock_identity(struct ClockIdentity *ci, char *name)
int generate_clock_identity(struct ClockIdentity *ci, const char *name)
{
unsigned char mac[6];
if (sk_interface_macaddr(name, mac, sizeof(mac)))

6
util.h
View File

@ -26,12 +26,12 @@
/**
* Table of human readable strings, one for each port state.
*/
extern char *ps_str[];
extern const char *ps_str[];
/**
* Table of human readable strings, one for each port event.
*/
extern char *ev_str[];
extern const char *ev_str[];
/**
* Convert a clock identity into a human readable string.
@ -64,7 +64,7 @@ char *pid2str(struct PortIdentity *id);
*/
int str2pid(const char *s, struct PortIdentity *result);
int generate_clock_identity(struct ClockIdentity *ci, char *name);
int generate_clock_identity(struct ClockIdentity *ci, const char *name);
/**
* Copies a PTPText to a static_ptp_text. This copies the text into