/* * Virtio 9p PDU debug * * Copyright IBM, Corp. 2010 * * Authors: * Anthony Liguori <aliguori@us.ibm.com> * * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. * */ #include "virtio.h" #include "pc.h" #include "virtio-9p.h" #include "virtio-9p-debug.h" #define BUG_ON(cond) assert(!(cond)) static FILE *llogfile; static struct iovec *get_sg(V9fsPDU *pdu, int rx) { if (rx) { return pdu->elem.in_sg; } return pdu->elem.out_sg; } static int get_sg_count(V9fsPDU *pdu, int rx) { if (rx) { return pdu->elem.in_num; } return pdu->elem.out_num; } static void pprint_int8(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { size_t copied; int count = get_sg_count(pdu, rx); size_t offset = *offsetp; struct iovec *sg = get_sg(pdu, rx); int8_t value; copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value)); BUG_ON(copied != sizeof(value)); offset += sizeof(value); fprintf(llogfile, "%s=0x%x", name, value); *offsetp = offset; } static void pprint_int16(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { size_t copied; int count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; int16_t value; copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value)); BUG_ON(copied != sizeof(value)); offset += sizeof(value); fprintf(llogfile, "%s=0x%x", name, value); *offsetp = offset; } static void pprint_int32(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { size_t copied; int count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; int32_t value; copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value)); BUG_ON(copied != sizeof(value)); offset += sizeof(value); fprintf(llogfile, "%s=0x%x", name, value); *offsetp = offset; } static void pprint_int64(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { size_t copied; int count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; int64_t value; copied = do_pdu_unpack(&value, sg, count, offset, sizeof(value)); BUG_ON(copied != sizeof(value)); offset += sizeof(value); fprintf(llogfile, "%s=0x%" PRIx64, name, value); *offsetp = offset; } static void pprint_str(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { int sg_count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; uint16_t tmp_size, size; size_t result; size_t copied = 0; int i = 0; /* get the size */ copied = do_pdu_unpack(&tmp_size, sg, sg_count, offset, sizeof(tmp_size)); BUG_ON(copied != sizeof(tmp_size)); size = le16_to_cpupu(&tmp_size); offset += copied; fprintf(llogfile, "%s=", name); for (i = 0; size && i < sg_count; i++) { size_t len; if (offset >= sg[i].iov_len) { /* skip this sg */ offset -= sg[i].iov_len; continue; } else { len = MIN(sg[i].iov_len - offset, size); result = fwrite(sg[i].iov_base + offset, 1, len, llogfile); BUG_ON(result != len); size -= len; copied += len; if (size) { offset = 0; continue; } } } *offsetp += copied; } static void pprint_qid(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { fprintf(llogfile, "%s={", name); pprint_int8(pdu, rx, offsetp, "type"); pprint_int32(pdu, rx, offsetp, ", version"); pprint_int64(pdu, rx, offsetp, ", path"); fprintf(llogfile, "}"); } static void pprint_stat(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { fprintf(llogfile, "%s={", name); pprint_int16(pdu, rx, offsetp, "size"); pprint_int16(pdu, rx, offsetp, ", type"); pprint_int32(pdu, rx, offsetp, ", dev"); pprint_qid(pdu, rx, offsetp, ", qid"); pprint_int32(pdu, rx, offsetp, ", mode"); pprint_int32(pdu, rx, offsetp, ", atime"); pprint_int32(pdu, rx, offsetp, ", mtime"); pprint_int64(pdu, rx, offsetp, ", length"); pprint_str(pdu, rx, offsetp, ", name"); pprint_str(pdu, rx, offsetp, ", uid"); pprint_str(pdu, rx, offsetp, ", gid"); pprint_str(pdu, rx, offsetp, ", muid"); pprint_str(pdu, rx, offsetp, ", extension"); pprint_int32(pdu, rx, offsetp, ", uid"); pprint_int32(pdu, rx, offsetp, ", gid"); pprint_int32(pdu, rx, offsetp, ", muid"); fprintf(llogfile, "}"); } static void pprint_stat_dotl(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { fprintf(llogfile, "%s={", name); pprint_qid(pdu, rx, offsetp, "qid"); pprint_int32(pdu, rx, offsetp, ", st_mode"); pprint_int64(pdu, rx, offsetp, ", st_nlink"); pprint_int32(pdu, rx, offsetp, ", st_uid"); pprint_int32(pdu, rx, offsetp, ", st_gid"); pprint_int64(pdu, rx, offsetp, ", st_rdev"); pprint_int64(pdu, rx, offsetp, ", st_size"); pprint_int64(pdu, rx, offsetp, ", st_blksize"); pprint_int64(pdu, rx, offsetp, ", st_blocks"); pprint_int64(pdu, rx, offsetp, ", atime"); pprint_int64(pdu, rx, offsetp, ", atime_nsec"); pprint_int64(pdu, rx, offsetp, ", mtime"); pprint_int64(pdu, rx, offsetp, ", mtime_nsec"); pprint_int64(pdu, rx, offsetp, ", ctime"); pprint_int64(pdu, rx, offsetp, ", ctime_nsec"); fprintf(llogfile, "}"); } static void pprint_strs(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { int sg_count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; uint16_t tmp_count, count, i; size_t copied = 0; fprintf(llogfile, "%s={", name); /* Get the count */ copied = do_pdu_unpack(&tmp_count, sg, sg_count, offset, sizeof(tmp_count)); BUG_ON(copied != sizeof(tmp_count)); count = le16_to_cpupu(&tmp_count); offset += copied; for (i = 0; i < count; i++) { char str[512]; if (i) { fprintf(llogfile, ", "); } snprintf(str, sizeof(str), "[%d]", i); pprint_str(pdu, rx, &offset, str); } fprintf(llogfile, "}"); *offsetp = offset; } static void pprint_qids(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { int sg_count = get_sg_count(pdu, rx); struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; uint16_t tmp_count, count, i; size_t copied = 0; fprintf(llogfile, "%s={", name); copied = do_pdu_unpack(&tmp_count, sg, sg_count, offset, sizeof(tmp_count)); BUG_ON(copied != sizeof(tmp_count)); count = le16_to_cpupu(&tmp_count); offset += copied; for (i = 0; i < count; i++) { char str[512]; if (i) { fprintf(llogfile, ", "); } snprintf(str, sizeof(str), "[%d]", i); pprint_qid(pdu, rx, &offset, str); } fprintf(llogfile, "}"); *offsetp = offset; } static void pprint_sg(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { struct iovec *sg = get_sg(pdu, rx); unsigned int count; int i; if (rx) { count = pdu->elem.in_num; } else { count = pdu->elem.out_num; } fprintf(llogfile, "%s={", name); for (i = 0; i < count; i++) { if (i) { fprintf(llogfile, ", "); } fprintf(llogfile, "(%p, 0x%zx)", sg[i].iov_base, sg[i].iov_len); } fprintf(llogfile, "}"); } /* FIXME: read from a directory fid returns serialized stat_t's */ #ifdef DEBUG_DATA static void pprint_data(V9fsPDU *pdu, int rx, size_t *offsetp, const char *name) { struct iovec *sg = get_sg(pdu, rx); size_t offset = *offsetp; unsigned int count; int32_t size; int total, i, j; ssize_t len; if (rx) { count = pdu->elem.in_num; } else count = pdu->elem.out_num; } BUG_ON((offset + sizeof(size)) > sg[0].iov_len); memcpy(&size, sg[0].iov_base + offset, sizeof(size)); offset += sizeof(size); fprintf(llogfile, "size: %x\n", size); sg[0].iov_base += 11; /* skip header */ sg[0].iov_len -= 11; total = 0; for (i = 0; i < count; i++) { total += sg[i].iov_len; if (total >= size) { /* trim sg list so writev does the right thing */ sg[i].iov_len -= (total - size); i++; break; } } fprintf(llogfile, "%s={\"", name); fflush(llogfile); for (j = 0; j < i; j++) { if (j) { fprintf(llogfile, "\", \""); fflush(llogfile); } do { len = writev(fileno(llogfile), &sg[j], 1); } while (len == -1 && errno == EINTR); fprintf(llogfile, "len == %ld: %m\n", len); BUG_ON(len != sg[j].iov_len); } fprintf(llogfile, "\"}"); sg[0].iov_base -= 11; sg[0].iov_len += 11; } #endif void pprint_pdu(V9fsPDU *pdu) { size_t offset = 7; if (llogfile == NULL) { llogfile = fopen("/tmp/pdu.log", "w"); } BUG_ON(!llogfile); switch (pdu->id) { case P9_TREADDIR: fprintf(llogfile, "TREADDIR: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_int64(pdu, 0, &offset, ", initial offset"); pprint_int32(pdu, 0, &offset, ", max count"); break; case P9_RREADDIR: fprintf(llogfile, "RREADDIR: ("); pprint_int32(pdu, 1, &offset, "count"); #ifdef DEBUG_DATA pprint_data(pdu, 1, &offset, ", data"); #endif break; case P9_TMKDIR: fprintf(llogfile, "TMKDIR: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_str(pdu, 0, &offset, "name"); pprint_int32(pdu, 0, &offset, "mode"); pprint_int32(pdu, 0, &offset, "gid"); break; case P9_RMKDIR: fprintf(llogfile, "RMKDIR: ("); pprint_qid(pdu, 0, &offset, "qid"); break; case P9_TVERSION: fprintf(llogfile, "TVERSION: ("); pprint_int32(pdu, 0, &offset, "msize"); pprint_str(pdu, 0, &offset, ", version"); break; case P9_RVERSION: fprintf(llogfile, "RVERSION: ("); pprint_int32(pdu, 1, &offset, "msize"); pprint_str(pdu, 1, &offset, ", version"); break; case P9_TGETATTR: fprintf(llogfile, "TGETATTR: ("); pprint_int32(pdu, 0, &offset, "fid"); break; case P9_RGETATTR: fprintf(llogfile, "RGETATTR: ("); pprint_stat_dotl(pdu, 1, &offset, "getattr"); break; case P9_TAUTH: fprintf(llogfile, "TAUTH: ("); pprint_int32(pdu, 0, &offset, "afid"); pprint_str(pdu, 0, &offset, ", uname"); pprint_str(pdu, 0, &offset, ", aname"); pprint_int32(pdu, 0, &offset, ", n_uname"); break; case P9_RAUTH: fprintf(llogfile, "RAUTH: ("); pprint_qid(pdu, 1, &offset, "qid"); break; case P9_TATTACH: fprintf(llogfile, "TATTACH: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_int32(pdu, 0, &offset, ", afid"); pprint_str(pdu, 0, &offset, ", uname"); pprint_str(pdu, 0, &offset, ", aname"); pprint_int32(pdu, 0, &offset, ", n_uname"); break; case P9_RATTACH: fprintf(llogfile, "RATTACH: ("); pprint_qid(pdu, 1, &offset, "qid"); break; case P9_TERROR: fprintf(llogfile, "TERROR: ("); break; case P9_RERROR: fprintf(llogfile, "RERROR: ("); pprint_str(pdu, 1, &offset, "ename"); pprint_int32(pdu, 1, &offset, ", ecode"); break; case P9_TFLUSH: fprintf(llogfile, "TFLUSH: ("); pprint_int16(pdu, 0, &offset, "oldtag"); break; case P9_RFLUSH: fprintf(llogfile, "RFLUSH: ("); break; case P9_TWALK: fprintf(llogfile, "TWALK: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_int32(pdu, 0, &offset, ", newfid"); pprint_strs(pdu, 0, &offset, ", wnames"); break; case P9_RWALK: fprintf(llogfile, "RWALK: ("); pprint_qids(pdu, 1, &offset, "wqids"); break; case P9_TOPEN: fprintf(llogfile, "TOPEN: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_int8(pdu, 0, &offset, ", mode"); break; case P9_ROPEN: fprintf(llogfile, "ROPEN: ("); pprint_qid(pdu, 1, &offset, "qid"); pprint_int32(pdu, 1, &offset, ", iounit"); break; case P9_TCREATE: fprintf(llogfile, "TCREATE: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_str(pdu, 0, &offset, ", name"); pprint_int32(pdu, 0, &offset, ", perm"); pprint_int8(pdu, 0, &offset, ", mode"); pprint_str(pdu, 0, &offset, ", extension"); break; case P9_RCREATE: fprintf(llogfile, "RCREATE: ("); pprint_qid(pdu, 1, &offset, "qid"); pprint_int32(pdu, 1, &offset, ", iounit"); break; case P9_TSYMLINK: 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_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_TLINK: fprintf(llogfile, "TLINK: ("); pprint_int32(pdu, 0, &offset, "fid"); pprint_str(pdu, 0, &offset, ", oldpath"); 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; default: fprintf(llogfile, "unknown(%d): (", pdu->id); break; } fprintf(llogfile, ")\n"); /* Flush the log message out */ fflush(llogfile); }