git: f035d56e711d - stable/14 - CAM: Use sbuf_new_for_sysctl() in more places

The branch stable/14 has been updated by mav:

URL: https://cgit.FreeBSD.org/src/commit/?id=f035d56e711d1de9e4cfd924e9a8db42e842a53b

commit f035d56e711d1de9e4cfd924e9a8db42e842a53b
Author:     Alexander Motin <mav@FreeBSD.org>
AuthorDate: 2023-11-22 20:32:16 +0000
Commit:     Alexander Motin <mav@FreeBSD.org>
CommitDate: 2023-12-06 15:35:02 +0000

    CAM: Use sbuf_new_for_sysctl() in more places
    
    There is no need to allocate buffer, worry about overflows, etc.
    
    MFC after:      2 weeks
    
    (cherry picked from commit 1b44079584dc317230cf810c0fe0a8c401a5c791)
---
 sys/cam/ata/ata_da.c   | 12 ++++--------
 sys/cam/scsi/scsi_da.c | 12 ++++--------
 2 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c
index d1ef28300666..e9a1c175f333 100644
--- a/sys/cam/ata/ata_da.c
+++ b/sys/cam/ata/ata_da.c
@@ -1426,7 +1426,6 @@ adazonemodesysctl(SYSCTL_HANDLER_ARGS)
 static int
 adazonesupsysctl(SYSCTL_HANDLER_ARGS)
 {
-	char tmpbuf[180];
 	struct ada_softc *softc;
 	struct sbuf sb;
 	int error, first;
@@ -1434,15 +1433,14 @@ adazonesupsysctl(SYSCTL_HANDLER_ARGS)
 
 	softc = (struct ada_softc *)arg1;
 
-	error = 0;
 	first = 1;
-	sbuf_new(&sb, tmpbuf, sizeof(tmpbuf), 0);
+	sbuf_new_for_sysctl(&sb, NULL, 0, req);
 
 	for (i = 0; i < sizeof(ada_zone_desc_table) /
 	     sizeof(ada_zone_desc_table[0]); i++) {
 		if (softc->zone_flags & ada_zone_desc_table[i].value) {
 			if (first == 0)
-				sbuf_printf(&sb, ", ");
+				sbuf_cat(&sb, ", ");
 			else
 				first = 0;
 			sbuf_cat(&sb, ada_zone_desc_table[i].desc);
@@ -1452,10 +1450,8 @@ adazonesupsysctl(SYSCTL_HANDLER_ARGS)
 	if (first == 1)
 		sbuf_printf(&sb, "None");
 
-	sbuf_finish(&sb);
-
-	error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
-
+	error = sbuf_finish(&sb);
+	sbuf_delete(&sb);
 	return (error);
 }
 
diff --git a/sys/cam/scsi/scsi_da.c b/sys/cam/scsi/scsi_da.c
index 7a063fce128b..df44d2279fbe 100644
--- a/sys/cam/scsi/scsi_da.c
+++ b/sys/cam/scsi/scsi_da.c
@@ -2735,7 +2735,6 @@ dazonemodesysctl(SYSCTL_HANDLER_ARGS)
 static int
 dazonesupsysctl(SYSCTL_HANDLER_ARGS)
 {
-	char tmpbuf[180];
 	struct da_softc *softc;
 	struct sbuf sb;
 	int error, first;
@@ -2743,15 +2742,14 @@ dazonesupsysctl(SYSCTL_HANDLER_ARGS)
 
 	softc = (struct da_softc *)arg1;
 
-	error = 0;
 	first = 1;
-	sbuf_new(&sb, tmpbuf, sizeof(tmpbuf), 0);
+	sbuf_new_for_sysctl(&sb, NULL, 0, req);
 
 	for (i = 0; i < sizeof(da_zone_desc_table) /
 	     sizeof(da_zone_desc_table[0]); i++) {
 		if (softc->zone_flags & da_zone_desc_table[i].value) {
 			if (first == 0)
-				sbuf_printf(&sb, ", ");
+				sbuf_cat(&sb, ", ");
 			else
 				first = 0;
 			sbuf_cat(&sb, da_zone_desc_table[i].desc);
@@ -2761,10 +2759,8 @@ dazonesupsysctl(SYSCTL_HANDLER_ARGS)
 	if (first == 1)
 		sbuf_printf(&sb, "None");
 
-	sbuf_finish(&sb);
-
-	error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
-
+	error = sbuf_finish(&sb);
+	sbuf_delete(&sb);
 	return (error);
 }