646 lines
19 KiB
C
646 lines
19 KiB
C
/*
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* Virtio 9p PDU debug
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*
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* Copyright IBM, Corp. 2010
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#include "virtio.h"
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#include "pc.h"
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#include "virtio-9p.h"
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#include "virtio-9p-debug.h"
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#define BUG_ON(cond) assert(!(cond))
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static FILE *llogfile;
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static struct iovec *get_sg(V9fsPDU *pdu, int rx)
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{
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if (rx) {
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return pdu->elem.in_sg;
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}
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return pdu->elem.out_sg;
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}
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static int get_sg_count(V9fsPDU *pdu, int rx)
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{
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if (rx) {
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return pdu->elem.in_num;
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}
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return pdu->elem.out_num;
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}
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static void pprint_int8(V9fsPDU *pdu, int rx, size_t *offsetp,
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const char *name)
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{
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size_t copied;
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int count = get_sg_count(pdu, rx);
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size_t offset = *offsetp;
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struct iovec *sg = get_sg(pdu, rx);
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int8_t value;
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copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value));
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BUG_ON(copied != sizeof(value));
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offset += sizeof(value);
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fprintf(llogfile, "%s=0x%x", name, value);
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*offsetp = offset;
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}
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static void pprint_int16(V9fsPDU *pdu, int rx, size_t *offsetp,
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const char *name)
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{
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size_t copied;
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int count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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int16_t value;
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copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value));
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BUG_ON(copied != sizeof(value));
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offset += sizeof(value);
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fprintf(llogfile, "%s=0x%x", name, value);
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*offsetp = offset;
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}
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static void pprint_int32(V9fsPDU *pdu, int rx, size_t *offsetp,
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const char *name)
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{
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size_t copied;
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int count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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int32_t value;
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copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value));
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BUG_ON(copied != sizeof(value));
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offset += sizeof(value);
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fprintf(llogfile, "%s=0x%x", name, value);
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*offsetp = offset;
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}
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static void pprint_int64(V9fsPDU *pdu, int rx, size_t *offsetp,
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const char *name)
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{
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size_t copied;
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int count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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int64_t value;
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copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value));
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BUG_ON(copied != sizeof(value));
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offset += sizeof(value);
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fprintf(llogfile, "%s=0x%" PRIx64, name, value);
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*offsetp = offset;
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}
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static void pprint_str(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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int sg_count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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uint16_t tmp_size, size;
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size_t result;
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size_t copied = 0;
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int i = 0;
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/* get the size */
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copied = do_pdu_unpack(&tmp_size, sg, sg_count, offset, sizeof(tmp_size));
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BUG_ON(copied != sizeof(tmp_size));
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size = le16_to_cpupu(&tmp_size);
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offset += copied;
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fprintf(llogfile, "%s=", name);
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for (i = 0; size && i < sg_count; i++) {
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size_t len;
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if (offset >= sg[i].iov_len) {
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/* skip this sg */
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offset -= sg[i].iov_len;
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continue;
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} else {
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len = MIN(sg[i].iov_len - offset, size);
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result = fwrite(sg[i].iov_base + offset, 1, len, llogfile);
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BUG_ON(result != len);
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size -= len;
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copied += len;
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if (size) {
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offset = 0;
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continue;
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}
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}
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}
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*offsetp += copied;
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}
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static void pprint_qid(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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fprintf(llogfile, "%s={", name);
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pprint_int8(pdu, rx, offsetp, "type");
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pprint_int32(pdu, rx, offsetp, ", version");
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pprint_int64(pdu, rx, offsetp, ", path");
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fprintf(llogfile, "}");
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}
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static void pprint_stat(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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fprintf(llogfile, "%s={", name);
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pprint_int16(pdu, rx, offsetp, "size");
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pprint_int16(pdu, rx, offsetp, ", type");
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pprint_int32(pdu, rx, offsetp, ", dev");
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pprint_qid(pdu, rx, offsetp, ", qid");
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pprint_int32(pdu, rx, offsetp, ", mode");
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pprint_int32(pdu, rx, offsetp, ", atime");
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pprint_int32(pdu, rx, offsetp, ", mtime");
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pprint_int64(pdu, rx, offsetp, ", length");
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pprint_str(pdu, rx, offsetp, ", name");
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pprint_str(pdu, rx, offsetp, ", uid");
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pprint_str(pdu, rx, offsetp, ", gid");
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pprint_str(pdu, rx, offsetp, ", muid");
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pprint_str(pdu, rx, offsetp, ", extension");
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pprint_int32(pdu, rx, offsetp, ", uid");
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pprint_int32(pdu, rx, offsetp, ", gid");
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pprint_int32(pdu, rx, offsetp, ", muid");
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fprintf(llogfile, "}");
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}
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static void pprint_stat_dotl(V9fsPDU *pdu, int rx, size_t *offsetp,
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const char *name)
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{
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fprintf(llogfile, "%s={", name);
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pprint_qid(pdu, rx, offsetp, "qid");
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pprint_int32(pdu, rx, offsetp, ", st_mode");
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pprint_int64(pdu, rx, offsetp, ", st_nlink");
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pprint_int32(pdu, rx, offsetp, ", st_uid");
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pprint_int32(pdu, rx, offsetp, ", st_gid");
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pprint_int64(pdu, rx, offsetp, ", st_rdev");
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pprint_int64(pdu, rx, offsetp, ", st_size");
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pprint_int64(pdu, rx, offsetp, ", st_blksize");
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pprint_int64(pdu, rx, offsetp, ", st_blocks");
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pprint_int64(pdu, rx, offsetp, ", atime");
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pprint_int64(pdu, rx, offsetp, ", atime_nsec");
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pprint_int64(pdu, rx, offsetp, ", mtime");
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pprint_int64(pdu, rx, offsetp, ", mtime_nsec");
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pprint_int64(pdu, rx, offsetp, ", ctime");
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pprint_int64(pdu, rx, offsetp, ", ctime_nsec");
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fprintf(llogfile, "}");
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}
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static void pprint_strs(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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int sg_count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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uint16_t tmp_count, count, i;
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size_t copied = 0;
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fprintf(llogfile, "%s={", name);
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/* Get the count */
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copied = do_pdu_unpack(&tmp_count, sg, sg_count, offset, sizeof(tmp_count));
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BUG_ON(copied != sizeof(tmp_count));
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count = le16_to_cpupu(&tmp_count);
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offset += copied;
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for (i = 0; i < count; i++) {
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char str[512];
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if (i) {
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fprintf(llogfile, ", ");
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}
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snprintf(str, sizeof(str), "[%d]", i);
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pprint_str(pdu, rx, &offset, str);
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}
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fprintf(llogfile, "}");
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*offsetp = offset;
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}
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static void pprint_qids(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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int sg_count = get_sg_count(pdu, rx);
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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uint16_t tmp_count, count, i;
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size_t copied = 0;
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fprintf(llogfile, "%s={", name);
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copied = do_pdu_unpack(&tmp_count, sg, sg_count, offset, sizeof(tmp_count));
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BUG_ON(copied != sizeof(tmp_count));
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count = le16_to_cpupu(&tmp_count);
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offset += copied;
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for (i = 0; i < count; i++) {
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char str[512];
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if (i) {
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fprintf(llogfile, ", ");
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}
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snprintf(str, sizeof(str), "[%d]", i);
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pprint_qid(pdu, rx, &offset, str);
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}
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fprintf(llogfile, "}");
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*offsetp = offset;
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}
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static void pprint_sg(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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struct iovec *sg = get_sg(pdu, rx);
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unsigned int count;
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int i;
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if (rx) {
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count = pdu->elem.in_num;
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} else {
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count = pdu->elem.out_num;
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}
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fprintf(llogfile, "%s={", name);
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for (i = 0; i < count; i++) {
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if (i) {
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fprintf(llogfile, ", ");
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}
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fprintf(llogfile, "(%p, 0x%zx)", sg[i].iov_base, sg[i].iov_len);
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}
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fprintf(llogfile, "}");
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}
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/* FIXME: read from a directory fid returns serialized stat_t's */
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#ifdef DEBUG_DATA
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static void pprint_data(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name)
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{
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struct iovec *sg = get_sg(pdu, rx);
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size_t offset = *offsetp;
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unsigned int count;
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int32_t size;
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int total, i, j;
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ssize_t len;
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if (rx) {
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count = pdu->elem.in_num;
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} else
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count = pdu->elem.out_num;
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}
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BUG_ON((offset + sizeof(size)) > sg[0].iov_len);
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memcpy(&size, sg[0].iov_base + offset, sizeof(size));
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offset += sizeof(size);
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fprintf(llogfile, "size: %x\n", size);
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sg[0].iov_base += 11; /* skip header */
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sg[0].iov_len -= 11;
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total = 0;
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for (i = 0; i < count; i++) {
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total += sg[i].iov_len;
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if (total >= size) {
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/* trim sg list so writev does the right thing */
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sg[i].iov_len -= (total - size);
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i++;
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break;
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}
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}
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fprintf(llogfile, "%s={\"", name);
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fflush(llogfile);
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for (j = 0; j < i; j++) {
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if (j) {
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fprintf(llogfile, "\", \"");
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fflush(llogfile);
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}
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do {
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len = writev(fileno(llogfile), &sg[j], 1);
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} while (len == -1 && errno == EINTR);
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fprintf(llogfile, "len == %ld: %m\n", len);
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BUG_ON(len != sg[j].iov_len);
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}
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fprintf(llogfile, "\"}");
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sg[0].iov_base -= 11;
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sg[0].iov_len += 11;
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}
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#endif
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void pprint_pdu(V9fsPDU *pdu)
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{
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size_t offset = 7;
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if (llogfile == NULL) {
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llogfile = fopen("/tmp/pdu.log", "w");
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}
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BUG_ON(!llogfile);
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switch (pdu->id) {
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case P9_TREADDIR:
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fprintf(llogfile, "TREADDIR: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_int64(pdu, 0, &offset, ", initial offset");
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pprint_int32(pdu, 0, &offset, ", max count");
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break;
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case P9_RREADDIR:
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fprintf(llogfile, "RREADDIR: (");
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pprint_int32(pdu, 1, &offset, "count");
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#ifdef DEBUG_DATA
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pprint_data(pdu, 1, &offset, ", data");
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#endif
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break;
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case P9_TMKDIR:
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fprintf(llogfile, "TMKDIR: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_str(pdu, 0, &offset, "name");
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pprint_int32(pdu, 0, &offset, "mode");
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pprint_int32(pdu, 0, &offset, "gid");
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break;
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case P9_RMKDIR:
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fprintf(llogfile, "RMKDIR: (");
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pprint_qid(pdu, 0, &offset, "qid");
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break;
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case P9_TVERSION:
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fprintf(llogfile, "TVERSION: (");
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pprint_int32(pdu, 0, &offset, "msize");
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pprint_str(pdu, 0, &offset, ", version");
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break;
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case P9_RVERSION:
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fprintf(llogfile, "RVERSION: (");
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pprint_int32(pdu, 1, &offset, "msize");
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pprint_str(pdu, 1, &offset, ", version");
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break;
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case P9_TGETATTR:
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fprintf(llogfile, "TGETATTR: (");
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pprint_int32(pdu, 0, &offset, "fid");
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break;
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case P9_RGETATTR:
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fprintf(llogfile, "RGETATTR: (");
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pprint_stat_dotl(pdu, 1, &offset, "getattr");
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break;
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case P9_TAUTH:
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fprintf(llogfile, "TAUTH: (");
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pprint_int32(pdu, 0, &offset, "afid");
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pprint_str(pdu, 0, &offset, ", uname");
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pprint_str(pdu, 0, &offset, ", aname");
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pprint_int32(pdu, 0, &offset, ", n_uname");
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break;
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case P9_RAUTH:
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fprintf(llogfile, "RAUTH: (");
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pprint_qid(pdu, 1, &offset, "qid");
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break;
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case P9_TATTACH:
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fprintf(llogfile, "TATTACH: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_int32(pdu, 0, &offset, ", afid");
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pprint_str(pdu, 0, &offset, ", uname");
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pprint_str(pdu, 0, &offset, ", aname");
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pprint_int32(pdu, 0, &offset, ", n_uname");
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break;
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case P9_RATTACH:
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fprintf(llogfile, "RATTACH: (");
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pprint_qid(pdu, 1, &offset, "qid");
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break;
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case P9_TERROR:
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fprintf(llogfile, "TERROR: (");
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break;
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case P9_RERROR:
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fprintf(llogfile, "RERROR: (");
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pprint_str(pdu, 1, &offset, "ename");
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pprint_int32(pdu, 1, &offset, ", ecode");
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break;
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case P9_TFLUSH:
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fprintf(llogfile, "TFLUSH: (");
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pprint_int16(pdu, 0, &offset, "oldtag");
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break;
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case P9_RFLUSH:
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fprintf(llogfile, "RFLUSH: (");
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break;
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case P9_TWALK:
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fprintf(llogfile, "TWALK: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_int32(pdu, 0, &offset, ", newfid");
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pprint_strs(pdu, 0, &offset, ", wnames");
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break;
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case P9_RWALK:
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fprintf(llogfile, "RWALK: (");
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pprint_qids(pdu, 1, &offset, "wqids");
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break;
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case P9_TOPEN:
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fprintf(llogfile, "TOPEN: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_int8(pdu, 0, &offset, ", mode");
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break;
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case P9_ROPEN:
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fprintf(llogfile, "ROPEN: (");
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pprint_qid(pdu, 1, &offset, "qid");
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pprint_int32(pdu, 1, &offset, ", iounit");
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break;
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case P9_TCREATE:
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fprintf(llogfile, "TCREATE: (");
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pprint_int32(pdu, 0, &offset, "fid");
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pprint_str(pdu, 0, &offset, ", name");
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pprint_int32(pdu, 0, &offset, ", perm");
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pprint_int8(pdu, 0, &offset, ", mode");
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pprint_str(pdu, 0, &offset, ", extension");
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break;
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case P9_RCREATE:
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fprintf(llogfile, "RCREATE: (");
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pprint_qid(pdu, 1, &offset, "qid");
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pprint_int32(pdu, 1, &offset, ", iounit");
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break;
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case P9_TSYMLINK:
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fprintf(llogfile, "TSYMLINK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_str(pdu, 0, &offset, ", name");
|
|
pprint_str(pdu, 0, &offset, ", symname");
|
|
pprint_int32(pdu, 0, &offset, ", gid");
|
|
break;
|
|
case P9_RSYMLINK:
|
|
fprintf(llogfile, "RSYMLINK: (");
|
|
pprint_qid(pdu, 1, &offset, "qid");
|
|
break;
|
|
case P9_TLCREATE:
|
|
fprintf(llogfile, "TLCREATE: (");
|
|
pprint_int32(pdu, 0, &offset, "dfid");
|
|
pprint_str(pdu, 0, &offset, ", name");
|
|
pprint_int32(pdu, 0, &offset, ", flags");
|
|
pprint_int32(pdu, 0, &offset, ", mode");
|
|
pprint_int32(pdu, 0, &offset, ", gid");
|
|
break;
|
|
case P9_RLCREATE:
|
|
fprintf(llogfile, "RLCREATE: (");
|
|
pprint_qid(pdu, 1, &offset, "qid");
|
|
pprint_int32(pdu, 1, &offset, ", iounit");
|
|
break;
|
|
case P9_TMKNOD:
|
|
fprintf(llogfile, "TMKNOD: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_str(pdu, 0, &offset, "name");
|
|
pprint_int32(pdu, 0, &offset, "mode");
|
|
pprint_int32(pdu, 0, &offset, "major");
|
|
pprint_int32(pdu, 0, &offset, "minor");
|
|
pprint_int32(pdu, 0, &offset, "gid");
|
|
break;
|
|
case P9_RMKNOD:
|
|
fprintf(llogfile, "RMKNOD: )");
|
|
pprint_qid(pdu, 0, &offset, "qid");
|
|
break;
|
|
case P9_TREADLINK:
|
|
fprintf(llogfile, "TREADLINK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
break;
|
|
case P9_RREADLINK:
|
|
fprintf(llogfile, "RREADLINK: (");
|
|
pprint_str(pdu, 0, &offset, "target");
|
|
break;
|
|
case P9_TREAD:
|
|
fprintf(llogfile, "TREAD: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_int64(pdu, 0, &offset, ", offset");
|
|
pprint_int32(pdu, 0, &offset, ", count");
|
|
pprint_sg(pdu, 0, &offset, ", sg");
|
|
break;
|
|
case P9_RREAD:
|
|
fprintf(llogfile, "RREAD: (");
|
|
pprint_int32(pdu, 1, &offset, "count");
|
|
pprint_sg(pdu, 1, &offset, ", sg");
|
|
offset = 7;
|
|
#ifdef DEBUG_DATA
|
|
pprint_data(pdu, 1, &offset, ", data");
|
|
#endif
|
|
break;
|
|
case P9_TWRITE:
|
|
fprintf(llogfile, "TWRITE: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_int64(pdu, 0, &offset, ", offset");
|
|
pprint_int32(pdu, 0, &offset, ", count");
|
|
break;
|
|
case P9_RWRITE:
|
|
fprintf(llogfile, "RWRITE: (");
|
|
pprint_int32(pdu, 1, &offset, "count");
|
|
break;
|
|
case P9_TCLUNK:
|
|
fprintf(llogfile, "TCLUNK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
break;
|
|
case P9_RCLUNK:
|
|
fprintf(llogfile, "RCLUNK: (");
|
|
break;
|
|
case P9_TFSYNC:
|
|
fprintf(llogfile, "TFSYNC: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
break;
|
|
case P9_RFSYNC:
|
|
fprintf(llogfile, "RFSYNC: (");
|
|
break;
|
|
case P9_TLINK:
|
|
fprintf(llogfile, "TLINK: (");
|
|
pprint_int32(pdu, 0, &offset, "dfid");
|
|
pprint_int32(pdu, 0, &offset, ", fid");
|
|
pprint_str(pdu, 0, &offset, ", newpath");
|
|
break;
|
|
case P9_RLINK:
|
|
fprintf(llogfile, "RLINK: (");
|
|
break;
|
|
case P9_TREMOVE:
|
|
fprintf(llogfile, "TREMOVE: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
break;
|
|
case P9_RREMOVE:
|
|
fprintf(llogfile, "RREMOVE: (");
|
|
break;
|
|
case P9_TSTAT:
|
|
fprintf(llogfile, "TSTAT: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
break;
|
|
case P9_RSTAT:
|
|
fprintf(llogfile, "RSTAT: (");
|
|
offset += 2; /* ignored */
|
|
pprint_stat(pdu, 1, &offset, "stat");
|
|
break;
|
|
case P9_TWSTAT:
|
|
fprintf(llogfile, "TWSTAT: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
offset += 2; /* ignored */
|
|
pprint_stat(pdu, 0, &offset, ", stat");
|
|
break;
|
|
case P9_RWSTAT:
|
|
fprintf(llogfile, "RWSTAT: (");
|
|
break;
|
|
case P9_TXATTRWALK:
|
|
fprintf(llogfile, "TXATTRWALK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_int32(pdu, 0, &offset, ", newfid");
|
|
pprint_str(pdu, 0, &offset, ", xattr name");
|
|
break;
|
|
case P9_RXATTRWALK:
|
|
fprintf(llogfile, "RXATTRWALK: (");
|
|
pprint_int64(pdu, 1, &offset, "xattrsize");
|
|
case P9_TXATTRCREATE:
|
|
fprintf(llogfile, "TXATTRCREATE: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_str(pdu, 0, &offset, ", name");
|
|
pprint_int64(pdu, 0, &offset, ", xattrsize");
|
|
pprint_int32(pdu, 0, &offset, ", flags");
|
|
break;
|
|
case P9_RXATTRCREATE:
|
|
fprintf(llogfile, "RXATTRCREATE: (");
|
|
break;
|
|
case P9_TLOCK:
|
|
fprintf(llogfile, "TLOCK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_int8(pdu, 0, &offset, ", type");
|
|
pprint_int32(pdu, 0, &offset, ", flags");
|
|
pprint_int64(pdu, 0, &offset, ", start");
|
|
pprint_int64(pdu, 0, &offset, ", length");
|
|
pprint_int32(pdu, 0, &offset, ", proc_id");
|
|
pprint_str(pdu, 0, &offset, ", client_id");
|
|
break;
|
|
case P9_RLOCK:
|
|
fprintf(llogfile, "RLOCK: (");
|
|
pprint_int8(pdu, 0, &offset, "status");
|
|
break;
|
|
case P9_TGETLOCK:
|
|
fprintf(llogfile, "TGETLOCK: (");
|
|
pprint_int32(pdu, 0, &offset, "fid");
|
|
pprint_int8(pdu, 0, &offset, ", type");
|
|
pprint_int64(pdu, 0, &offset, ", start");
|
|
pprint_int64(pdu, 0, &offset, ", length");
|
|
pprint_int32(pdu, 0, &offset, ", proc_id");
|
|
pprint_str(pdu, 0, &offset, ", client_id");
|
|
break;
|
|
case P9_RGETLOCK:
|
|
fprintf(llogfile, "RGETLOCK: (");
|
|
pprint_int8(pdu, 0, &offset, "type");
|
|
pprint_int64(pdu, 0, &offset, ", start");
|
|
pprint_int64(pdu, 0, &offset, ", length");
|
|
pprint_int32(pdu, 0, &offset, ", proc_id");
|
|
pprint_str(pdu, 0, &offset, ", client_id");
|
|
break;
|
|
default:
|
|
fprintf(llogfile, "unknown(%d): (", pdu->id);
|
|
break;
|
|
}
|
|
|
|
fprintf(llogfile, ")\n");
|
|
/* Flush the log message out */
|
|
fflush(llogfile);
|
|
}
|