From 339768b8dd61658d78823daa0aeadb43d6f91ac7 Mon Sep 17 00:00:00 2001
From: Vladimir Serbinenko <phco...@gmail.com>
Date: Wed, 19 Jul 2023 15:25:14 +0200
Subject: [PATCH 2/4] loader/multiboot: Add --noescape option
---
grub-core/loader/i386/multiboot_mbi.c | 13 ++++----
grub-core/loader/multiboot.c | 46 ++++++++++++++++++++-------
grub-core/loader/multiboot_mbi2.c | 12 +++----
include/grub/multiboot.h | 4 +--
include/grub/multiboot2.h | 4 +--
5 files changed, 51 insertions(+), 28 deletions(-)
diff --git a/grub-core/loader/i386/multiboot_mbi.c b/grub-core/loader/i386/multiboot_mbi.c
index 9a98e9bfe..c7c9daf18 100644
--- a/grub-core/loader/i386/multiboot_mbi.c
+++ b/grub-core/loader/i386/multiboot_mbi.c
@@ -659,13 +659,13 @@ grub_multiboot_free_mbi (void)
}
grub_err_t
-grub_multiboot_init_mbi (int argc, char *argv[])
+grub_multiboot_init_mbi (int argc, char *argv[], int no_escape)
{
grub_ssize_t len = 0;
grub_multiboot_free_mbi ();
- len = grub_loader_cmdline_size (argc, argv, 0);
+ len = grub_loader_cmdline_size (argc, argv, no_escape);
cmdline = grub_malloc (len);
if (! cmdline)
@@ -673,12 +673,12 @@ grub_multiboot_init_mbi (int argc, char *argv[])
cmdline_size = len;
return grub_create_loader_cmdline (argc, argv, cmdline,
- cmdline_size, GRUB_VERIFY_KERNEL_CMDLINE, 0);
+ cmdline_size, GRUB_VERIFY_KERNEL_CMDLINE, no_escape);
}
grub_err_t
grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
- int argc, char *argv[])
+ int argc, char *argv[], int no_escape)
{
struct module *newmod;
grub_size_t len = 0;
@@ -691,7 +691,7 @@ grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
newmod->size = size;
newmod->next = 0;
- len = grub_loader_cmdline_size (argc, argv, 0);
+ len = grub_loader_cmdline_size (argc, argv, no_escape);
newmod->cmdline = grub_malloc (len);
if (! newmod->cmdline)
@@ -703,7 +703,8 @@ grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
total_modcmd += ALIGN_UP (len, 4);
err = grub_create_loader_cmdline (argc, argv, newmod->cmdline,
- newmod->cmdline_size, GRUB_VERIFY_MODULE_CMDLINE, 0);
+ newmod->cmdline_size, GRUB_VERIFY_MODULE_CMDLINE, no_escape);
+
if (err)
{
grub_free (newmod);
diff --git a/grub-core/loader/multiboot.c b/grub-core/loader/multiboot.c
index 94be512c4..851f75334 100644
--- a/grub-core/loader/multiboot.c
+++ b/grub-core/loader/multiboot.c
@@ -295,11 +295,14 @@ grub_cmd_multiboot (grub_command_t cmd __attribute__ ((unused)),
#ifndef GRUB_USE_MULTIBOOT2
grub_multiboot_quirks = GRUB_MULTIBOOT_QUIRKS_NONE;
+#endif
int option_found = 0;
+ int no_escape = 0;
do
{
option_found = 0;
+#ifndef GRUB_USE_MULTIBOOT2
if (argc != 0 && grub_strcmp (argv[0], "--quirk-bad-kludge") == 0)
{
argc--;
@@ -315,9 +318,17 @@ grub_cmd_multiboot (grub_command_t cmd __attribute__ ((unused)),
option_found = 1;
grub_multiboot_quirks |= GRUB_MULTIBOOT_QUIRK_MODULES_AFTER_KERNEL;
}
- } while (option_found);
#endif
+ if (argc != 0 && grub_strcmp (argv[0], "--noescape") == 0)
+ {
+ argc--;
+ argv++;
+ option_found = 1;
+ no_escape = 1;
+ }
+ } while (option_found);
+
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
@@ -328,7 +339,7 @@ grub_cmd_multiboot (grub_command_t cmd __attribute__ ((unused)),
grub_dl_ref (my_mod);
/* Skip filename. */
- GRUB_MULTIBOOT (init_mbi) (argc - 1, argv + 1);
+ GRUB_MULTIBOOT (init_mbi) (argc - 1, argv + 1, no_escape);
grub_relocator_unload (GRUB_MULTIBOOT (relocator));
GRUB_MULTIBOOT (relocator) = grub_relocator_new ();
@@ -367,18 +378,29 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
void *module = NULL;
grub_addr_t target;
grub_err_t err;
- int nounzip = 0;
+ int nounzip = 0, noescape = 0, option_found = 0;
grub_uint64_t lowest_addr = 0;
- if (argc == 0)
- return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
-
- if (grub_strcmp (argv[0], "--nounzip") == 0)
+ do
{
- argv++;
- argc--;
- nounzip = 1;
- }
+ option_found = 0;
+
+ if (argc != 0 && grub_strcmp (argv[0], "--nounzip") == 0)
+ {
+ argc--;
+ argv++;
+ option_found = 1;
+ nounzip = 1;
+ }
+
+ if (argc != 0 && grub_strcmp (argv[0], "--noescape") == 0)
+ {
+ argc--;
+ argv++;
+ option_found = 1;
+ noescape = 1;
+ }
+ } while (option_found);
if (argc == 0)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
@@ -420,7 +442,7 @@ grub_cmd_module (grub_command_t cmd __attribute__ ((unused)),
target = 0;
}
- err = GRUB_MULTIBOOT (add_module) (target, size, argc - 1, argv + 1);
+ err = GRUB_MULTIBOOT (add_module) (target, size, argc - 1, argv + 1, noescape);
if (err)
{
grub_file_close (file);
diff --git a/grub-core/loader/multiboot_mbi2.c b/grub-core/loader/multiboot_mbi2.c
index 8a81a0359..fcaf3ba56 100644
--- a/grub-core/loader/multiboot_mbi2.c
+++ b/grub-core/loader/multiboot_mbi2.c
@@ -1031,13 +1031,13 @@ grub_multiboot2_free_mbi (void)
}
grub_err_t
-grub_multiboot2_init_mbi (int argc, char *argv[])
+grub_multiboot2_init_mbi (int argc, char *argv[], int no_escape)
{
grub_ssize_t len = 0;
grub_multiboot2_free_mbi ();
- len = grub_loader_cmdline_size (argc, argv, 0);
+ len = grub_loader_cmdline_size (argc, argv, no_escape);
cmdline = grub_malloc (len);
if (! cmdline)
@@ -1045,12 +1045,12 @@ grub_multiboot2_init_mbi (int argc, char *argv[])
cmdline_size = len;
return grub_create_loader_cmdline (argc, argv, cmdline, cmdline_size,
- GRUB_VERIFY_KERNEL_CMDLINE, 0);
+ GRUB_VERIFY_KERNEL_CMDLINE, no_escape);
}
grub_err_t
grub_multiboot2_add_module (grub_addr_t start, grub_size_t size,
- int argc, char *argv[])
+ int argc, char *argv[], int no_escape)
{
struct module *newmod;
grub_size_t len = 0;
@@ -1062,7 +1062,7 @@ grub_multiboot2_add_module (grub_addr_t start, grub_size_t size,
newmod->start = start;
newmod->size = size;
- len = grub_loader_cmdline_size (argc, argv, 0);
+ len = grub_loader_cmdline_size (argc, argv, no_escape);
newmod->cmdline = grub_malloc (len);
if (! newmod->cmdline)
@@ -1074,7 +1074,7 @@ grub_multiboot2_add_module (grub_addr_t start, grub_size_t size,
total_modcmd += ALIGN_UP (len, MULTIBOOT_TAG_ALIGN);
err = grub_create_loader_cmdline (argc, argv, newmod->cmdline,
- newmod->cmdline_size, GRUB_VERIFY_MODULE_CMDLINE, 0);
+ newmod->cmdline_size, GRUB_VERIFY_MODULE_CMDLINE, no_escape);
if (err)
{
grub_free (newmod->cmdline);
diff --git a/include/grub/multiboot.h b/include/grub/multiboot.h
index d8847f753..c8f4b1304 100644
--- a/include/grub/multiboot.h
+++ b/include/grub/multiboot.h
@@ -43,9 +43,9 @@ void grub_module (int argc, char *argv[]);
void grub_multiboot_set_accepts_video (int val);
grub_err_t grub_multiboot_make_mbi (grub_uint32_t *target);
void grub_multiboot_free_mbi (void);
-grub_err_t grub_multiboot_init_mbi (int argc, char *argv[]);
+grub_err_t grub_multiboot_init_mbi (int argc, char *argv[], int noescape);
grub_err_t grub_multiboot_add_module (grub_addr_t start, grub_size_t size,
- int argc, char *argv[]);
+ int argc, char *argv[], int noescape);
void grub_multiboot_set_bootdev (void);
void
grub_multiboot_add_elfsyms (grub_size_t num, grub_size_t entsize,
diff --git a/include/grub/multiboot2.h b/include/grub/multiboot2.h
index b90aa6989..fa8006b4d 100644
--- a/include/grub/multiboot2.h
+++ b/include/grub/multiboot2.h
@@ -35,9 +35,9 @@ void grub_module2 (int argc, char *argv[]);
void grub_multiboot2_set_accepts_video (int val);
grub_err_t grub_multiboot2_make_mbi (grub_uint32_t *target);
void grub_multiboot2_free_mbi (void);
-grub_err_t grub_multiboot2_init_mbi (int argc, char *argv[]);
+grub_err_t grub_multiboot2_init_mbi (int argc, char *argv[], int noescape);
grub_err_t grub_multiboot2_add_module (grub_addr_t start, grub_size_t size,
- int argc, char *argv[]);
+ int argc, char *argv[], int noescape);
void grub_multiboot2_set_bootdev (void);
void
grub_multiboot2_add_elfsyms (grub_size_t num, grub_size_t entsize,
--
2.39.2
_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
https://lists.gnu.org/mailman/listinfo/grub-devel
