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module/i3: fix gcc warning

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Gcc (correctly) figured out that we may end up truncating the socket
path. In practice, it's something that should never happen.

Never the less, silence the warning by writing the socket path
directly into the sockaddr_un object.
This commit is contained in:
Daniel Eklöf 2019-01-07 18:30:30 +01:00
parent efe3dd06ab
commit 552739fa20
1 changed files with 5 additions and 8 deletions
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13
modules/i3.c
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@ -353,7 +353,7 @@ run(struct module_run_context *ctx)
{
struct private *m = ctx->module->private;
char sock_path[1024];
struct sockaddr_un addr = {.sun_family = AF_UNIX};
{
FILE *out = popen("i3 --get-socketpath", "r");
if (out == NULL) {
@ -362,13 +362,13 @@ run(struct module_run_context *ctx)
return 1;
}
fgets(sock_path, sizeof(sock_path), out);
fgets(addr.sun_path, sizeof(addr.sun_path), out);
pclose(out);
/* Strip newline */
ssize_t len = strlen(sock_path);
if (sock_path[len - 1] == '\n')
sock_path[len - 1] = '\0';
ssize_t len = strlen(addr.sun_path);
if (addr.sun_path[len - 1] == '\n')
addr.sun_path[len - 1] = '\0';
}
int sock = socket(AF_UNIX, SOCK_STREAM, 0);
@ -378,9 +378,6 @@ run(struct module_run_context *ctx)
return 1;
}
struct sockaddr_un addr = {.sun_family = AF_UNIX};
strncpy(addr.sun_path, sock_path, sizeof(addr.sun_path) - 1);
int r = connect(sock, (const struct sockaddr *)&addr, sizeof(addr));
if (r == -1) {
LOG_ERRNO("failed to connect to i3 socket");