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i3-msg: more error handling, more comments

This commit is contained in:
Michael Stapelberg 2009-07-28 21:29:23 +02:00
parent ec9b58ada9
commit c56dc0f966
1 changed files with 9 additions and 1 deletions
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10
i3-msg/main.c
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@ -27,6 +27,11 @@
#include <stdint.h> #include <stdint.h>
#include <getopt.h> #include <getopt.h>
/*
* Formats a message (payload) of the given size and type and sends it to i3 via
* the given socket file descriptor.
*
*/
static void ipc_send_message(int sockfd, uint32_t message_size, static void ipc_send_message(int sockfd, uint32_t message_size,
uint32_t message_type, uint8_t *payload) { uint32_t message_type, uint8_t *payload) {
int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) + sizeof(uint32_t) + message_size; int buffer_size = strlen("i3-ipc") + sizeof(uint32_t) + sizeof(uint32_t) + message_size;
@ -90,12 +95,15 @@ int main(int argc, char *argv[]) {
} }
int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0); int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
if (sockfd == -1)
err(EXIT_FAILURE, "Could not create socket");
struct sockaddr_un addr; struct sockaddr_un addr;
memset(&addr, 0, sizeof(struct sockaddr_un)); memset(&addr, 0, sizeof(struct sockaddr_un));
addr.sun_family = AF_LOCAL; addr.sun_family = AF_LOCAL;
strcpy(addr.sun_path, socket_path); strcpy(addr.sun_path, socket_path);
if (connect(sockfd, &addr, sizeof(struct sockaddr_un)) < 0) if (connect(sockfd, &addr, sizeof(struct sockaddr_un)) < 0)
err(-1, "Could not connect to i3"); err(EXIT_FAILURE, "Could not connect to i3");
ipc_send_message(sockfd, strlen(argv[optind]), 0, (uint8_t*)argv[optind]); ipc_send_message(sockfd, strlen(argv[optind]), 0, (uint8_t*)argv[optind]);