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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:54:16 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:54:16 +0000
commit485f6ecd453d8a2fd8b9b9fadea03159d8b50797 (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/lib/cmdline.c
parentInitial commit. (diff)
downloadgrub2-upstream.tar.xz
grub2-upstream.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/lib/cmdline.c')
-rw-r--r--grub-core/lib/cmdline.c109
1 files changed, 109 insertions, 0 deletions
diff --git a/grub-core/lib/cmdline.c b/grub-core/lib/cmdline.c
new file mode 100644
index 0000000..ed0b149
--- /dev/null
+++ b/grub-core/lib/cmdline.c
@@ -0,0 +1,109 @@
+/* cmdline.c - linux command line handling */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2010 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/lib/cmdline.h>
+#include <grub/misc.h>
+
+static unsigned int check_arg (char *c, int *has_space)
+{
+ int space = 0;
+ unsigned int size = 0;
+
+ while (*c)
+ {
+ if (*c == '\\' || *c == '\'' || *c == '"')
+ size++;
+ else if (*c == ' ')
+ space = 1;
+
+ size++;
+ c++;
+ }
+
+ if (space)
+ size += 2;
+
+ if (has_space)
+ *has_space = space;
+
+ return size;
+}
+
+unsigned int grub_loader_cmdline_size (int argc, char *argv[])
+{
+ int i;
+ unsigned int size = 0;
+
+ for (i = 0; i < argc; i++)
+ {
+ size += check_arg (argv[i], 0);
+ size++; /* Separator space or NULL. */
+ }
+
+ if (size == 0)
+ size = 1;
+
+ return size;
+}
+
+grub_err_t
+grub_create_loader_cmdline (int argc, char *argv[], char *buf,
+ grub_size_t size, enum grub_verify_string_type type)
+{
+ int i, space;
+ unsigned int arg_size;
+ char *c, *orig_buf = buf;
+
+ for (i = 0; i < argc; i++)
+ {
+ c = argv[i];
+ arg_size = check_arg(argv[i], &space);
+ arg_size++; /* Separator space or NULL. */
+
+ if (size < arg_size)
+ break;
+
+ size -= arg_size;
+
+ if (space)
+ *buf++ = '"';
+
+ while (*c)
+ {
+ if (*c == '\\' || *c == '\'' || *c == '"')
+ *buf++ = '\\';
+
+ *buf++ = *c;
+ c++;
+ }
+
+ if (space)
+ *buf++ = '"';
+
+ *buf++ = ' ';
+ }
+
+ /* Replace last space with null. */
+ if (i)
+ buf--;
+
+ *buf = 0;
+
+ return grub_verify_string (orig_buf, type);
+}