version 1.1.1.1.2.12, 2011/10/14 12:45:09
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version 1.5, 2015/05/19 23:25:30
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Line 12 terms:
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Line 12 terms:
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All of the documentation and software included in the ELWIX and AITNET |
All of the documentation and software included in the ELWIX and AITNET |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
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Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 | Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
by Michael Pounov <misho@elwix.org>. All rights reserved. |
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Redistribution and use in source and binary forms, with or without |
Redistribution and use in source and binary forms, with or without |
Line 128 PrepareL2(const char *psDev, int *bpflen)
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Line 128 PrepareL2(const char *psDev, int *bpflen)
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} |
} |
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int |
int |
PrepareL3(const struct sockaddr *sa, int *bpflen) | PrepareL3(const sockaddr_t *sa, int *bpflen) |
{ |
{ |
int h, n = 1; |
int h, n = 1; |
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FTRACE(3); |
FTRACE(3); |
assert(sa); |
assert(sa); |
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h = socket(sa->sa_family, SOCK_RAW, IPPROTO_ICMP); | h = socket(sa->sa.sa_family ? sa->sa.sa_family : AF_INET, SOCK_RAW, IPPROTO_ICMP); |
if (h == -1) { |
if (h == -1) { |
printf("Error:: Cant open raw socket #%d - %s\n", errno, strerror(errno)); |
printf("Error:: Cant open raw socket #%d - %s\n", errno, strerror(errno)); |
return -1; |
return -1; |
Line 147 PrepareL3(const struct sockaddr *sa, int *bpflen)
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Line 147 PrepareL3(const struct sockaddr *sa, int *bpflen)
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return -1; |
return -1; |
} |
} |
*/ |
*/ |
if (bind(h, sa, sizeof(struct sockaddr)) == -1) { | if (sa->sa.sa_family && bind(h, &sa->sa, sa->sa.sa_len) == -1) { |
printf("Error:: Cant bind to raw socket #%d - %s\n", errno, strerror(errno)); |
printf("Error:: Cant bind to raw socket #%d - %s\n", errno, strerror(errno)); |
close(h); |
close(h); |
return -1; |
return -1; |
Line 163 PrepareL3(const struct sockaddr *sa, int *bpflen)
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Line 163 PrepareL3(const struct sockaddr *sa, int *bpflen)
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char |
char |
icmpRecv(int s, u_int * __restrict seq, u_short * __restrict id, u_int * __restrict crypted, |
icmpRecv(int s, u_int * __restrict seq, u_short * __restrict id, u_int * __restrict crypted, |
u_char * __restrict data, int * __restrict datlen, struct sockaddr *sa, socklen_t *salen) | u_char * __restrict data, int * __restrict datlen, sockaddr_t *sa, socklen_t *salen) |
{ |
{ |
int ret = 0; |
int ret = 0; |
struct icmp *icmp; |
struct icmp *icmp; |
Line 171 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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Line 171 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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u_char buf[USHRT_MAX] = { 0 }; |
u_char buf[USHRT_MAX] = { 0 }; |
u_int crc; |
u_int crc; |
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ret = recvfrom(s, buf, sizeof buf, 0, sa, salen); | ret = recvfrom(s, buf, sizeof buf, 0, &sa->sa, salen); |
if (ret == -1) { |
if (ret == -1) { |
ERR("Receive recvfrom() #%d - %s", errno, strerror(errno)); |
ERR("Receive recvfrom() #%d - %s", errno, strerror(errno)); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
Line 206 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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Line 206 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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VERB(3) LOG("Channel SECURED:: Plain text communication not supported at this moment ..."); |
VERB(3) LOG("Channel SECURED:: Plain text communication not supported at this moment ..."); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} |
} |
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if (ntohl(hdr->ansh_nonce) != *crypted) |
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VERB(4) LOG("Detect change of nonce from %x to %x", *crypted, ntohl(hdr->ansh_nonce)); |
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*crypted = ntohl(hdr->ansh_nonce); |
*crypted = ntohl(hdr->ansh_nonce); |
} |
} |
Line 235 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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Line 237 icmpRecv(int s, u_int * __restrict seq, u_short * __re
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int |
int |
icmpSend(int s, u_int seq, u_short id, char flg, u_int crypted, u_char *data, int datlen, |
icmpSend(int s, u_int seq, u_short id, char flg, u_int crypted, u_char *data, int datlen, |
struct sockaddr *sa, socklen_t salen) | sockaddr_t *sa, socklen_t salen) |
{ |
{ |
u_char *pos, buf[USHRT_MAX] = { 0 }; |
u_char *pos, buf[USHRT_MAX] = { 0 }; |
struct icmp *icmp; |
struct icmp *icmp; |
Line 268 icmpSend(int s, u_int seq, u_short id, char flg, u_int
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Line 270 icmpSend(int s, u_int seq, u_short id, char flg, u_int
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icmp->icmp_cksum = crcIP(buf, sizeof(struct icmp) + sizeof(struct ansh_hdr) + datlen); |
icmp->icmp_cksum = crcIP(buf, sizeof(struct icmp) + sizeof(struct ansh_hdr) + datlen); |
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if ((ret = sendto(s, buf, sizeof(struct icmp) + sizeof(struct ansh_hdr) + datlen, |
if ((ret = sendto(s, buf, sizeof(struct icmp) + sizeof(struct ansh_hdr) + datlen, |
0, sa, salen)) == -1) { | 0, &sa->sa, salen)) == -1) { |
ERR("Send sendto() #%d - %s", errno, strerror(errno)); |
ERR("Send sendto() #%d - %s", errno, strerror(errno)); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} else |
} else |
Line 283 icmpSend(int s, u_int seq, u_short id, char flg, u_int
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Line 285 icmpSend(int s, u_int seq, u_short id, char flg, u_int
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} |
} |
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static int |
static int |
_pkt_Send(int s, u_int seq, char flg, u_int crypted, u_char *data, int datlen, struct io_ether_addr *ea) | _pkt_Send(int s, u_int seq, char flg, u_int crypted, u_char *data, int datlen, ether_addr_t *ea) |
{ |
{ |
u_char *pos, buf[USHRT_MAX] = { 0 }; | u_char *pos, *str, buf[USHRT_MAX] = { 0 }; |
struct ether_header *e = (struct ether_header*) buf; |
struct ether_header *e = (struct ether_header*) buf; |
struct ansh_hdr *hdr; |
struct ansh_hdr *hdr; |
int ret = 0; |
int ret = 0; |
Line 295 _pkt_Send(int s, u_int seq, char flg, u_int crypted, u
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Line 297 _pkt_Send(int s, u_int seq, char flg, u_int crypted, u
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return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
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e->ether_type = ntohs(ANSH_ID); |
e->ether_type = ntohs(ANSH_ID); |
memcpy(e->ether_dhost, ea->ether_addr_octet, ETHER_ADDR_LEN); | memcpy(e->ether_dhost, ea->octet, ETHER_ADDR_LEN); |
hdr = (struct ansh_hdr*) (buf + ETHER_HDR_LEN); |
hdr = (struct ansh_hdr*) (buf + ETHER_HDR_LEN); |
pos = ((u_char*) hdr) + sizeof(struct ansh_hdr); |
pos = ((u_char*) hdr) + sizeof(struct ansh_hdr); |
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memcpy(pos, data, datlen); |
memcpy(pos, data, datlen); |
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if (Crypted) { |
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str = cryptBuffer(pos, datlen, Crypted); |
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if (str) { |
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memcpy(pos, str, datlen); |
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e_free(str); |
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} |
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} |
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hdr->ansh_ver = ANSH_VERSION; |
hdr->ansh_ver = ANSH_VERSION; |
hdr->ansh_flg = flg; |
hdr->ansh_flg = flg; |
hdr->ansh_len = htons(datlen + sizeof(struct ansh_hdr)); |
hdr->ansh_len = htons(datlen + sizeof(struct ansh_hdr)); |
Line 324 _pkt_Send(int s, u_int seq, char flg, u_int crypted, u
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Line 334 _pkt_Send(int s, u_int seq, char flg, u_int crypted, u
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} |
} |
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int |
int |
pktSend(int s, u_int seq, char flg, u_int crypted, u_char *data, int datlen, struct io_ether_addr *ea) | pktSend(int s, u_int seq, char flg, u_int crypted, u_char *data, int datlen, struct e_ether_addr *ea) |
{ |
{ |
int wlen, ret = 0; |
int wlen, ret = 0; |
u_char *pos = data; |
u_char *pos = data; |
Line 352 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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Line 362 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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struct bpf_hdr *bpf; |
struct bpf_hdr *bpf; |
struct ansh_hdr *hdr; |
struct ansh_hdr *hdr; |
u_int crc; |
u_int crc; |
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u_char *str; |
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if (rlen < (sizeof(struct bpf_hdr) + ETHER_HDR_LEN + sizeof(struct ansh_hdr))) { |
if (rlen < (sizeof(struct bpf_hdr) + ETHER_HDR_LEN + sizeof(struct ansh_hdr))) { |
VERB(1) LOG("Discard packet too short %d ...", rlen); |
VERB(1) LOG("Discard packet too short %d ...", rlen); |
Line 384 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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Line 395 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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VERB(3) LOG("Channel SECURED:: Plain text communication not supported at this moment ..."); |
VERB(3) LOG("Channel SECURED:: Plain text communication not supported at this moment ..."); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} |
} |
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if (ntohl(hdr->ansh_nonce) != *crypted) |
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VERB(4) LOG("Detect change of nonce from %x to %x", *crypted, ntohl(hdr->ansh_nonce)); |
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*crypted = ntohl(hdr->ansh_nonce); |
*crypted = ntohl(hdr->ansh_nonce); |
} |
} |
Line 400 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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Line 413 _pkt_Recv(u_char * __restrict buf, int rlen, u_int * _
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/* select data */ |
/* select data */ |
if (data) { |
if (data) { |
*datlen = ntohs(hdr->ansh_len) - sizeof(struct ansh_hdr); |
*datlen = ntohs(hdr->ansh_len) - sizeof(struct ansh_hdr); |
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if (Crypted) { |
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str = cryptBuffer(buf + bpf->bh_hdrlen + ETHER_HDR_LEN + sizeof(struct ansh_hdr), |
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*datlen, Crypted); |
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if (str) { |
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memcpy(buf + bpf->bh_hdrlen + ETHER_HDR_LEN + sizeof(struct ansh_hdr), |
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str, *datlen); |
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e_free(str); |
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} |
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} |
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memcpy(data, buf + bpf->bh_hdrlen + ETHER_HDR_LEN + sizeof(struct ansh_hdr), *datlen); |
memcpy(data, buf + bpf->bh_hdrlen + ETHER_HDR_LEN + sizeof(struct ansh_hdr), *datlen); |
} |
} |
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Line 423 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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Line 446 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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else |
else |
memset(data, 0, *datlen); |
memset(data, 0, *datlen); |
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if (!(buf = malloc(*datlen))) { | if (!(buf = e_malloc(*datlen))) { |
ERR("malloc() #%d - %s", errno, strerror(errno)); |
ERR("malloc() #%d - %s", errno, strerror(errno)); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} |
} |
Line 431 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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Line 454 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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rlen = read(s, buf, *datlen); |
rlen = read(s, buf, *datlen); |
if (rlen == -1) { |
if (rlen == -1) { |
ERR("Receive packet() #%d - %s", errno, strerror(errno)); |
ERR("Receive packet() #%d - %s", errno, strerror(errno)); |
free(buf); | e_free(buf); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} else |
} else |
VERB(4) LOG("Get packet with len=%d", rlen); |
VERB(4) LOG("Get packet with len=%d", rlen); |
Line 439 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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Line 462 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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/* check header len */ |
/* check header len */ |
if (rlen < (sizeof(struct bpf_hdr) + ETHER_HDR_LEN + sizeof(struct ansh_hdr))) { |
if (rlen < (sizeof(struct bpf_hdr) + ETHER_HDR_LEN + sizeof(struct ansh_hdr))) { |
VERB(1) LOG("Discard packet too short %d ...", rlen); |
VERB(1) LOG("Discard packet too short %d ...", rlen); |
free(buf); | e_free(buf); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} else { |
} else { |
bpf = (struct bpf_hdr*) buf; |
bpf = (struct bpf_hdr*) buf; |
Line 450 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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Line 473 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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ptr = next = buf; |
ptr = next = buf; |
ptrlen = nextlen = rlen; |
ptrlen = nextlen = rlen; |
if ((flg = _pkt_Recv(ptr, ptrlen, seq, crypted, pos, &buflen, &next, &nextlen)) == -1) { |
if ((flg = _pkt_Recv(ptr, ptrlen, seq, crypted, pos, &buflen, &next, &nextlen)) == -1) { |
free(buf); | e_free(buf); |
return ANSH_FLG_ERR; |
return ANSH_FLG_ERR; |
} else { |
} else { |
pos += buflen; |
pos += buflen; |
Line 469 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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Line 492 pktRecv(int s, u_int * __restrict seq, u_int * __restr
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ptrlen = nextlen; |
ptrlen = nextlen; |
} |
} |
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free(buf); | e_free(buf); |
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return flg; |
return flg; |
} |
} |
Line 511 cryptBuffer(u_char *buf, int rlen, u_int ctr)
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Line 534 cryptBuffer(u_char *buf, int rlen, u_int ctr)
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return NULL; |
return NULL; |
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return str; |
return str; |
} |
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int |
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stopProcess(sched_root_task_t * __restrict root, proc_head_t * __restrict h, pid_t pid, sched_task_func_t func) |
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{ |
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struct tagProc *p; |
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FTRACE(3); |
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SLIST_FOREACH(p, h, proc_next) |
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if (p->proc_pid == pid) { |
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break; |
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} |
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VERB(3) LOG("pid=%d found=%p\n", pid, p); |
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if (!p) |
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return 1; |
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ioFreePTY(p->proc_pty, p->proc_ttyname); |
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if (p->proc_pty) |
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schedCancelby(root, NULL, CRITERIA_FD, (void*) ((intptr_t) p->proc_pty), NULL); |
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p->proc_pty = 0; |
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p->proc_pid = 0; |
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p->proc_seq = 0; |
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p->proc_flg = ANSH_FLG_EOF; |
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p->proc_rlen_[FD2NET] = 0; |
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schedCallOnce(root, func, p, p->proc_sock); |
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return 0; |
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} |
} |