commit 4e93fcbdc7c7ffcbe977bc051ac8ea2a34bae4fe
from: Omar Polo <op@omarpolo.com>
date: Mon Jan 17 15:10:40 2022 UTC

9pclib: add wstat support

commit - d33c93c4c8ccc67d3f0b9aaaa37c450dc5ea36a2
commit + 4e93fcbdc7c7ffcbe977bc051ac8ea2a34bae4fe
blob - c9cc93ca244ecef5eedfab354ec8bc7c3ce57f98
blob + d53ac475b40fa93e409221ea11b457252ba56a35
--- lib/9pclib.c
+++ lib/9pclib.c
@@ -20,11 +20,12 @@
 #include <inttypes.h>
 #include <string.h>
 
-#include "9pclib.h"
 #include "kami.h"
 #include "log.h"
 #include "utils.h"
 
+#include "9pclib.h"
+
 uint16_t iota_tag;
 
 struct evbuffer *evb;
@@ -67,7 +68,10 @@ write_str(uint16_t len, const char *str)
 void
 write_str_auto(const char *str)
 {
-	write_str(strlen(str), str);
+	if (str == NULL)
+		write_16(0);
+	else
+		write_str(strlen(str), str);
 }
 
 void
@@ -240,7 +244,43 @@ tstat(uint32_t fid)
 {
 	/* fid[4] */
 	write_hdr_auto(sizeof(fid), Tstat);
+	write_fid(fid);
+}
+
+void
+twstat(uint32_t fid, const struct np_stat *st)
+{
+	uint32_t	len;
+
+	/* fid[4] stat[n] */
+	len = sizeof(fid) + NPSTATSIZ(0, 0, 0, 0);
+	if (st->name != NULL)
+		len += strlen(st->name);
+	if (st->uid != NULL)
+		len += strlen(st->uid);
+	if (st->gid != NULL)
+		len += strlen(st->gid);
+	if (st->muid != NULL)
+		len += strlen(st->muid);
+
+	write_hdr_auto(len, Twstat);
 	write_fid(fid);
+	write_16(st->type);
+	write_32(st->dev);
+
+	write_64(st->qid.path);
+	write_32(st->qid.vers);
+	write_8(st->qid.type);
+
+	write_32(st->mode);
+	write_32(st->atime);
+	write_32(st->mtime);
+	write_64(st->length);
+
+	write_str_auto(st->name);
+	write_str_auto(st->uid);
+	write_str_auto(st->gid);
+	write_str_auto(st->muid);
 }
 
 void
blob - 9952a8b55f1c826652ef1bd543c9218344942d47
blob + f5d1a177175502208a1af2732267108c99978d9d
--- lib/9pclib.h
+++ lib/9pclib.h
@@ -48,6 +48,7 @@ void		 tcreate(uint32_t, const char *, uint32_t, uint8
 void		 tread(uint32_t, uint64_t, uint32_t);
 void		 twrite(uint32_t, uint64_t, const void *, uint32_t);
 void		 tstat(uint32_t);
+void		 twstat(uint32_t, const struct np_stat *);
 void		 tremove(uint32_t);
 
 #endif