From ac4e478015397f4f1840a099d9eda0aa7c54721d Mon Sep 17 00:00:00 2001
From: Ilia Docin <ilya.docin@contentai.ru>
Date: Sun, 23 Jun 2024 21:15:09 +0300
Subject: [PATCH] sane.ds: Add SANE option settable flag support.

---
 dlls/sane.ds/options.c | 3 +++
 dlls/sane.ds/unixlib.c | 1 +
 dlls/sane.ds/unixlib.h | 1 +
 3 files changed, 5 insertions(+)

diff --git a/dlls/sane.ds/options.c b/dlls/sane.ds/options.c
index 1d39844a770..eb6a308b844 100644
--- a/dlls/sane.ds/options.c
+++ b/dlls/sane.ds/options.c
@@ -59,6 +59,7 @@ TW_UINT16 sane_option_set_int(const char *option_name, int val, BOOL *needs_relo
 {
     struct option_descriptor opt;
     TW_UINT16 rc = sane_find_option(option_name, TYPE_INT, &opt);
+    if (!opt.is_settable) return TWCC_OPERATIONERROR;
 
     if (rc == TWCC_SUCCESS) rc = sane_option_set_value( opt.optno, &val, needs_reload );
     return rc;
@@ -77,6 +78,7 @@ TW_UINT16 sane_option_set_bool(const char *option_name, int val )
 {
     struct option_descriptor opt;
     TW_UINT16 rc = sane_find_option(option_name, TYPE_BOOL, &opt);
+    if (!opt.is_settable) return TWCC_OPERATIONERROR;
 
     if (rc == TWCC_SUCCESS) rc = sane_option_set_value( opt.optno, &val, NULL );
     return rc;
@@ -102,6 +104,7 @@ TW_UINT16 sane_option_set_str(const char *option_name, char *val, BOOL *needs_re
 {
     struct option_descriptor opt;
     TW_UINT16 rc = sane_find_option(option_name, TYPE_STRING, &opt);
+    if (!opt.is_settable) return TWCC_OPERATIONERROR;
 
     if (rc == TWCC_SUCCESS) rc = sane_option_set_value( opt.optno, val, needs_reload );
     return rc;
diff --git a/dlls/sane.ds/unixlib.c b/dlls/sane.ds/unixlib.c
index 897aa09e5ef..69f085450a8 100644
--- a/dlls/sane.ds/unixlib.c
+++ b/dlls/sane.ds/unixlib.c
@@ -159,6 +159,7 @@ static void map_descr( struct option_descriptor *descr, const SANE_Option_Descri
     descr->constraint_type = map_constraint_type( opt->constraint_type );
     descr->size = opt->size;
     descr->is_active = SANE_OPTION_IS_ACTIVE( opt->cap );
+    descr->is_settable = SANE_OPTION_IS_SETTABLE( opt->cap );
     if (opt->title) len = ntdll_umbstowcs( opt->title, strlen(opt->title),
                                            descr->title, ARRAY_SIZE(descr->title) );
     descr->title[len] = 0;
diff --git a/dlls/sane.ds/unixlib.h b/dlls/sane.ds/unixlib.h
index d3ffbf1878d..34e7a9a9796 100644
--- a/dlls/sane.ds/unixlib.h
+++ b/dlls/sane.ds/unixlib.h
@@ -39,6 +39,7 @@ struct option_descriptor
     int optno;
     int size;
     int is_active;
+    int is_settable;
     enum { TYPE_BOOL, TYPE_INT, TYPE_FIXED, TYPE_STRING, TYPE_BUTTON, TYPE_GROUP } type;
     enum { UNIT_NONE, UNIT_PIXEL, UNIT_BIT, UNIT_MM, UNIT_DPI, UNIT_PERCENT, UNIT_MICROSECOND } unit;
     enum { CONSTRAINT_NONE, CONSTRAINT_RANGE, CONSTRAINT_WORD_LIST, CONSTRAINT_STRING_LIST } constraint_type;