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--fake on FreeBSD

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This commit is contained in:
ruti 2025-01-17 19:21:17 +03:00
parent 8568eb16b6
commit 45f6589a31
2 changed files with 59 additions and 0 deletions
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55
desync.c
View File

@ -338,6 +338,61 @@ static ssize_t send_fake(int sfd, const char *buffer,
}
#endif
#ifdef __FreeBSD__
static ssize_t send_fake(int sfd, const char *buffer,
long pos, const struct desync_params *opt, struct packet pkt)
{
int ffd = memfd_create("name", 0);
if (ffd < 0) {
uniperror("memfd_create");
return -1;
}
char *p = 0;
ssize_t len = -1;
while (1) {
if (ftruncate(ffd, pos) < 0) {
uniperror("ftruncate");
break;
}
p = mmap(0, pos, PROT_WRITE, MAP_SHARED, ffd, 0);
if (p == MAP_FAILED) {
uniperror("mmap");
p = 0;
break;
}
memcpy(p, pkt.data, pkt.size < pos ? pkt.size : pos);
if (setttl(sfd, opt->ttl ? opt->ttl : DEFAULT_TTL) < 0) {
break;
}
int s = sendfile(ffd, sfd, 0, pos, 0, 0, SF_FLAGS(16, SF_NOCACHE));
if (s < 0) {
uniperror("sendfile");
if (errno != EAGAIN) break;
}
struct timespec time = {
.tv_nsec = 5 * 1e6
};
nanosleep(&time, 0);
memcpy(p, buffer, pos);
if (msync(p, pos, MS_ASYNC) < 0) {
uniperror("msync");
break;
}
if (setttl(sfd, params.def_ttl) < 0) {
break;
}
len = pos;
break;
}
if (p) munmap(p, pos);
close(ffd);
return len;
}
#endif
static ssize_t send_oob(int sfd, char *buffer,
ssize_t n, long pos, const char *c)
{

4
params.h
View File

@ -23,6 +23,10 @@
#define TIMEOUT_SUPPORT 1
#endif
#ifdef __FreeBSD__
#define FAKE_SUPPORT 1
#endif
#define OFFSET_END 1
#define OFFSET_MID 2
#define OFFSET_RAND 4