From: Apple Date: Fri, 16 Mar 2012 21:38:31 +0000 (+0000) Subject: network_cmds-356.9.tar.gz X-Git-Tag: mac-os-x-1075^0 X-Git-Url: https://git.saurik.com/apple/network_cmds.git/commitdiff_plain/44bd3e4da82664508ce0e5aea495c41bda73e120?ds=inline network_cmds-356.9.tar.gz --- diff --git a/kdumpd.tproj/kdump.h b/kdumpd.tproj/kdump.h index 22b732d..9536946 100644 --- a/kdumpd.tproj/kdump.h +++ b/kdumpd.tproj/kdump.h @@ -56,6 +56,9 @@ #ifndef _KDUMP_H_ #define _KDUMP_H_ +#include +#include +#include /* Mac OS X kernel core dump server, based on the BSD trivial file * transfer protocol server (FreeBSD distribution), with several @@ -64,7 +67,7 @@ */ #define SEGSIZE 512 /* data segment size */ - +#define MAXIMUM_KDP_PKTSIZE (16384) /* * Packet types. */ @@ -83,7 +86,7 @@ struct kdumphdr { unsigned int tu_code; /* error code */ char tu_stuff[1]; /* request packet stuff */ } th_u; - char th_data[1]; /* data or error string */ + char th_data[0]; /* data or error string */ }__attribute__((packed)); #define th_block th_u.tu_block @@ -103,4 +106,9 @@ struct kdumphdr { #define EEXISTS 6 /* file already exists */ #define ENOUSER 7 /* no such user */ +#define DEBUG 0 +#define WRITE_DEBUG 0 +#define KDUMPD_DEBUG_LEVEL LOG_ALERT +#define KDP_LARGE_CRASHDUMP_PKT_SIZE (1440 - sizeof(struct udpiphdr)) + #endif diff --git a/kdumpd.tproj/kdumpd.c b/kdumpd.tproj/kdumpd.c index dfbb4bd..4ad72c9 100644 --- a/kdumpd.tproj/kdumpd.c +++ b/kdumpd.tproj/kdumpd.c @@ -55,11 +55,13 @@ static const char copyright[] = #include #include #include +#include #include #include "kdump.h" #include +#include #include #include #include @@ -76,15 +78,16 @@ static const char copyright[] = #include "kdumpsubs.h" -#define TIMEOUT 5 +#define TIMEOUT 2 int peer; int rexmtval = TIMEOUT; -int maxtimeout = 10*TIMEOUT; +int maxtimeout = 25 * TIMEOUT; #define PKTSIZE SEGSIZE+6 -char buf[PKTSIZE]; -char ackbuf[PKTSIZE]; + +char buf[MAXIMUM_KDP_PKTSIZE]; +char ackbuf[MAXIMUM_KDP_PKTSIZE]; struct sockaddr_in from; socklen_t fromlen; @@ -109,11 +112,14 @@ static int ipchroot; static char *errtomsg __P((int)); static void nak __P((int)); static char * __P(verifyhost(struct sockaddr_in *)); +uint32_t kdp_crashdump_pkt_size = (SEGSIZE + (sizeof(struct kdumphdr))); +uint32_t kdp_crashdump_seg_size = SEGSIZE; #define KDP_FEATURE_MASK_STRING "features" -enum {KDP_FEATURE_LARGE_CRASHDUMPS = 1}; -uint32_t kdp_crashdump_feature_mask; -uint32_t kdp_feature_large_crashdumps; +enum {KDP_FEATURE_LARGE_CRASHDUMPS = 1, KDP_FEATURE_LARGE_PKT_SIZE = 2}; + +uint32_t kdp_crashdump_feature_mask; +uint32_t kdp_feature_large_crashdumps, kdp_feature_large_packets; int main(argc, argv) @@ -355,8 +361,15 @@ again: if (strncmp(KDP_FEATURE_MASK_STRING, cp, sizeof(KDP_FEATURE_MASK_STRING)) == 0) { kdp_crashdump_feature_mask = ntohl(*(uint32_t *) (cp + sizeof(KDP_FEATURE_MASK_STRING))); kdp_feature_large_crashdumps = kdp_crashdump_feature_mask & KDP_FEATURE_LARGE_CRASHDUMPS; - syslog(LOG_INFO, "Received feature mask %s:%hx", cp, kdp_crashdump_feature_mask); - } + kdp_feature_large_packets = kdp_crashdump_feature_mask & KDP_FEATURE_LARGE_PKT_SIZE; + + if (kdp_feature_large_packets) { + kdp_crashdump_pkt_size = KDP_LARGE_CRASHDUMP_PKT_SIZE; + kdp_crashdump_seg_size = kdp_crashdump_pkt_size - sizeof(struct kdumphdr); + } + syslog(KDUMPD_DEBUG_LEVEL, "Received feature mask %s:0x%x", cp, kdp_crashdump_feature_mask); + } else + syslog(KDUMPD_DEBUG_LEVEL, "Unable to locate feature mask, mode: %s", mode); for (pf = formats; pf->f_mode; pf++) if (strcmp(pf->f_mode, mode) == 0) @@ -367,7 +380,7 @@ again: } ecode = (*pf->f_validate)(&filename, tp->th_opcode); if (logging) { - syslog(LOG_INFO, "%s: %s request for %s: %s", verifyhost(&from), + syslog(KDUMPD_DEBUG_LEVEL, "%s: %s request for %s: %s", verifyhost(&from), tp->th_opcode == WRQ ? "write" : "read", filename, errtomsg(ecode)); } @@ -420,7 +433,7 @@ validate_access(char **filep, int mode) return (errno); - fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC); + fd = open(filename, O_RDWR|O_CREAT|O_TRUNC , S_IRUSR | S_IWUSR); if (fd < 0) return (errno + 100); @@ -456,7 +469,6 @@ justquit() exit(0); } - /* * Receive a file. */ @@ -477,7 +489,7 @@ recvfile(pf) do { send_seek_ack: timeout = 0; if (block == 0) - ap->th_opcode = htons((u_short)ACK | (kdp_feature_large_crashdumps << 8)); + ap->th_opcode = htons((u_short)ACK | ((kdp_feature_large_crashdumps | kdp_feature_large_packets) << 8)); else ap->th_opcode = htons((u_short)ACK); ap->th_block = htonl((unsigned int)block); @@ -496,7 +508,7 @@ send_ack: write_behind(file, pf->f_convert); for ( ; ; ) { alarm(rexmtval); - n = recv(peer, dp, PKTSIZE, 0); + n = recv(peer, dp, kdp_crashdump_pkt_size, 0); alarm(0); if (n < 0) { /* really? */ syslog(LOG_ERR, "read: %m"); @@ -504,8 +516,13 @@ send_ack: } dp->th_opcode = ntohs((u_short)dp->th_opcode); dp->th_block = ntohl((unsigned int)dp->th_block); +#if DEBUG + syslog(KDUMPD_DEBUG_LEVEL, "Received packet type %u, block %u\n", (unsigned)dp->th_opcode, (unsigned)dp->th_block); +#endif + if (dp->th_opcode == ERROR) goto abort; + if (dp->th_opcode == KDP_EOF) { syslog (LOG_ERR, "Received last panic dump packet"); @@ -520,16 +537,14 @@ send_ack: if (kdp_feature_large_crashdumps) { crashdump_offset = OSSwapBigToHostInt64((*(uint64_t *)dp->th_data)); -#if DEBUG - syslog(LOG_INFO, "Large offset"); -#endif } else { bcopy (dp->th_data, &tempoff, sizeof(unsigned int)); crashdump_offset = ntohl(tempoff); } + #if DEBUG - syslog(LOG_INFO, "Seeking to offset 0x%llx\n", crashdump_offset); + syslog(KDUMPD_DEBUG_LEVEL, "Seeking to offset 0x%llx\n", crashdump_offset); #endif errno = 0; lseek(fileno (file), crashdump_offset, SEEK_SET); @@ -540,11 +555,11 @@ send_ack: } (void) synchnet(peer); if (dp->th_block == (block-1)) - { - syslog (LOG_DAEMON|LOG_ERR, "Retransmitting seek ack - current block %hu, received block %hu", block, dp->th_block); - goto send_ack; /* rexmit */ - } - } + { + syslog (LOG_DAEMON|LOG_ERR, "Retransmitting seek ack - current block %u, received block %u", block, dp->th_block); + goto send_ack; /* rexmit */ + } + } if (dp->th_opcode == DATA) { if (dp->th_block == block) { @@ -554,14 +569,16 @@ send_ack: (void) synchnet(peer); if (dp->th_block == (block-1)) { - syslog (LOG_DAEMON|LOG_ERR, "Retransmitting ack - current block %hu, received block %hu", block, dp->th_block); + syslog (LOG_DAEMON|LOG_ERR, "Retransmitting ack - current block %u, received block %u", block, dp->th_block); goto send_ack; /* rexmit */ } else - syslog (LOG_DAEMON|LOG_ERR, "Not retransmitting ack - current block %hu, received block %hu", block, dp->th_block); + syslog (LOG_DAEMON|LOG_ERR, "Not retransmitting ack - current block %u, received block %u", block, dp->th_block); } } - +#if DEBUG + syslog(KDUMPD_DEBUG_LEVEL, "Writing block sized %u, current offset 0x%llx\n", n - 6, ftello(file)); +#endif size = writeit(file, &dp, n - 6, pf->f_convert); if (size != (n-6)) { /* ahem */ if (size < 0) nak(errno + 100); diff --git a/kdumpd.tproj/kdumpsubs.c b/kdumpd.tproj/kdumpsubs.c index 1f37ce8..283ca62 100644 --- a/kdumpd.tproj/kdumpsubs.c +++ b/kdumpd.tproj/kdumpsubs.c @@ -53,6 +53,7 @@ #include #include +#include #include "kdumpsubs.h" @@ -60,7 +61,7 @@ struct bf { int counter; /* size of data in buffer, or flag */ - char buf[PKTSIZE]; /* room for data packet */ + char buf[MAXIMUM_KDP_PKTSIZE]; /* room for data packet */ } bfs[2]; /* Values for bf.counter */ @@ -80,6 +81,9 @@ static struct kdumphdr *rw_init __P ((int)); struct kdumphdr *w_init() { return rw_init(0); } /* write-behind */ struct kdumphdr *r_init() { return rw_init(1); } /* read-ahead */ +extern uint32_t kdp_crashdump_pkt_size; +extern uint32_t kdp_crashdump_seg_size; + /* init for either read-ahead or write-behind */ /* zero for write-behind, one for read-head */ static struct kdumphdr * @@ -140,12 +144,12 @@ read_ahead(FILE *file, int convert) dp = (struct kdumphdr *)b->buf; if (convert == 0) { - b->counter = read(fileno(file), dp->th_data, SEGSIZE); + b->counter = read(fileno(file), dp->th_data, kdp_crashdump_seg_size); return; } p = dp->th_data; - for (i = 0 ; i < SEGSIZE; i++) { + for (i = 0 ; i < kdp_crashdump_seg_size; i++) { if (newline) { if (prevchar == '\n') c = '\n'; /* lf to cr,lf */ @@ -182,6 +186,7 @@ writeit(FILE *file, struct kdumphdr **dpp, int ct, int convert) return ct; /* this is a lie of course */ } + /* * Output a buffer to a file, converting from netascii if requested. * CR,NUL -> CR and CR,LF => LF. @@ -250,7 +255,7 @@ int synchnet(int f) { int i, j = 0; - char rbuf[PKTSIZE]; + char rbuf[kdp_crashdump_pkt_size]; struct sockaddr_in from; socklen_t fromlen;