[src/trunk]: src/sbin/gpt Add gpt_change_hdr() similar to gpt_change_ent() fo...

[jnemeth <jnemeth%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a5b18af0e5f2
branches:  trunk
changeset: 457434:a5b18af0e5f2
user:      jnemeth <jnemeth%NetBSD.org@localhost>
date:      Tue Jun 25 03:42:45 2019 +0000

description:
Add gpt_change_hdr() similar to gpt_change_ent() for changing
arbitrary header fields.

diffstat:

 sbin/gpt/gpt.c |  29 ++++++++++++++++++++++++++++-
 sbin/gpt/gpt.h |   2 ++
 2 files changed, 30 insertions(+), 1 deletions(-)

diffs (58 lines):

diff -r 6bf8578c4dde -r a5b18af0e5f2 sbin/gpt/gpt.c
--- a/sbin/gpt/gpt.c    Tue Jun 25 03:41:05 2019 +0000
+++ b/sbin/gpt/gpt.c    Tue Jun 25 03:42:45 2019 +0000
@@ -35,7 +35,7 @@
 __FBSDID("$FreeBSD: src/sbin/gpt/gpt.c,v 1.16 2006/07/07 02:44:23 marcel Exp $");
 #endif
 #ifdef __RCSID
-__RCSID("$NetBSD: gpt.c,v 1.79 2019/06/21 02:14:59 jnemeth Exp $");
+__RCSID("$NetBSD: gpt.c,v 1.80 2019/06/25 03:50:18 jnemeth Exp $");
 #endif
 
 #include <sys/param.h>
@@ -1076,6 +1076,33 @@
 }
 
 int
+gpt_change_hdr(gpt_t gpt, const struct gpt_find *find,
+    void (*cfn)(struct gpt_hdr *, void *, int), void *v)
+{
+       struct gpt_hdr *hdr;
+
+       if ((hdr = gpt_hdr(gpt)) == NULL)
+               return -1;
+
+       /* Change the primary header. */
+       (*cfn)(hdr, v, 0);
+
+       if (gpt_write_primary(gpt) == -1)
+               return -1;
+
+       hdr = gpt->tpg->map_data;
+       /* Change the secondary header. */
+       (*cfn)(hdr, v, 1);
+
+       if (gpt_write_backup(gpt) == -1)
+               return -1;
+
+       gpt_msg(gpt, "Header %s", find->msg);
+
+       return 0;
+}
+
+int
 gpt_add_ais(gpt_t gpt, off_t *alignment, u_int *entry, off_t *size, int ch)
 {
        switch (ch) {
diff -r 6bf8578c4dde -r a5b18af0e5f2 sbin/gpt/gpt.h
--- a/sbin/gpt/gpt.h    Tue Jun 25 03:41:05 2019 +0000
+++ b/sbin/gpt/gpt.h    Tue Jun 25 03:42:45 2019 +0000
@@ -116,6 +116,8 @@
 };
 int    gpt_change_ent(gpt_t, const struct gpt_find *,
     void (*)(struct gpt_ent *, void *, int), void *);
+int    gpt_change_hdr(gpt_t, const struct gpt_find *,
+    void (*)(struct gpt_hdr *, void *, int), void *);
 int    gpt_add_find(gpt_t, struct gpt_find *, int);
 
 #define GPT_AIS "a:i:s:"