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63 lines
1.9 KiB
63 lines
1.9 KiB
2 years ago
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Chris Coulson <chris.coulson@canonical.com>
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Date: Thu, 7 Jan 2021 19:53:55 +0000
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Subject: [PATCH] kern/parser: Introduce terminate_arg() helper
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process_char() and grub_parser_split_cmdline() use similar code for
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terminating the most recent argument. Add a helper function for this.
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Signed-off-by: Chris Coulson <chris.coulson@canonical.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/kern/parser.c | 23 +++++++++++++----------
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1 file changed, 13 insertions(+), 10 deletions(-)
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diff --git a/grub-core/kern/parser.c b/grub-core/kern/parser.c
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index 0d3582bd8..572c67089 100644
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--- a/grub-core/kern/parser.c
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+++ b/grub-core/kern/parser.c
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@@ -129,6 +129,16 @@ add_var (char *varname, char **bp, char **vp,
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*((*bp)++) = *val;
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}
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+static void
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+terminate_arg (char *buffer, char **bp, int *argc)
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+{
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+ if (*bp != buffer && *((*bp) - 1) != '\0')
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+ {
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+ *((*bp)++) = '\0';
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+ (*argc)++;
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+ }
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+}
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+
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static grub_err_t
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process_char (char c, char *buffer, char **bp, char *varname, char **vp,
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grub_parser_state_t state, int *argc,
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@@ -157,11 +167,7 @@ process_char (char c, char *buffer, char **bp, char *varname, char **vp,
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* Don't add more than one argument if multiple
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* spaces are used.
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*/
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- if (*bp != buffer && *((*bp) - 1) != '\0')
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- {
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- *((*bp)++) = '\0';
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- (*argc)++;
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- }
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+ terminate_arg (buffer, bp, argc);
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}
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else if (use)
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*((*bp)++) = use;
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@@ -232,11 +238,8 @@ grub_parser_split_cmdline (const char *cmdline,
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variable. */
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add_var (varname, &bp, &vp, state, GRUB_PARSER_STATE_TEXT);
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- if (bp != buffer && *(bp - 1))
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- {
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- *(bp++) = '\0';
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- (*argc)++;
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- }
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+ /* Ensure that the last argument is terminated. */
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+ terminate_arg (buffer, &bp, argc);
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/* If there are no args, then we're done. */
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if (!*argc)
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