diff options
Diffstat (limited to '0040-xen-cmdline-Extend-parse_boolean-to-signal-a-name-ma.patch')
-rw-r--r-- | 0040-xen-cmdline-Extend-parse_boolean-to-signal-a-name-ma.patch | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/0040-xen-cmdline-Extend-parse_boolean-to-signal-a-name-ma.patch b/0040-xen-cmdline-Extend-parse_boolean-to-signal-a-name-ma.patch deleted file mode 100644 index 3512590..0000000 --- a/0040-xen-cmdline-Extend-parse_boolean-to-signal-a-name-ma.patch +++ /dev/null @@ -1,87 +0,0 @@ -From eec5b02403a9df2523527caad24f17af5060fbe7 Mon Sep 17 00:00:00 2001 -From: Andrew Cooper <andrew.cooper3@citrix.com> -Date: Tue, 12 Jul 2022 11:15:03 +0200 -Subject: [PATCH 40/51] xen/cmdline: Extend parse_boolean() to signal a name - match - -This will help parsing a sub-option which has boolean and non-boolean options -available. - -First, rework 'int val' into 'bool has_neg_prefix'. This inverts it's value, -but the resulting logic is far easier to follow. - -Second, reject anything of the form 'no-$FOO=' which excludes ambiguous -constructs such as 'no-$foo=yes' which have never been valid. - -This just leaves the case where everything is otherwise fine, but parse_bool() -can't interpret the provided string. - -Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com> -Reviewed-by: Juergen Gross <jgross@suse.com> -Reviewed-by: Jan Beulich <jbeulich@suse.com> -master commit: 382326cac528dd1eb0d04efd5c05363c453e29f4 -master date: 2022-07-11 15:21:35 +0100 ---- - xen/common/kernel.c | 20 ++++++++++++++++---- - xen/include/xen/lib.h | 3 ++- - 2 files changed, 18 insertions(+), 5 deletions(-) - -diff --git a/xen/common/kernel.c b/xen/common/kernel.c -index e119e5401f9d..7ed96521f97a 100644 ---- a/xen/common/kernel.c -+++ b/xen/common/kernel.c -@@ -272,9 +272,9 @@ int parse_bool(const char *s, const char *e) - int parse_boolean(const char *name, const char *s, const char *e) - { - size_t slen, nlen; -- int val = !!strncmp(s, "no-", 3); -+ bool has_neg_prefix = !strncmp(s, "no-", 3); - -- if ( !val ) -+ if ( has_neg_prefix ) - s += 3; - - slen = e ? ({ ASSERT(e >= s); e - s; }) : strlen(s); -@@ -286,11 +286,23 @@ int parse_boolean(const char *name, const char *s, const char *e) - - /* Exact, unadorned name? Result depends on the 'no-' prefix. */ - if ( slen == nlen ) -- return val; -+ return !has_neg_prefix; -+ -+ /* Inexact match with a 'no-' prefix? Not valid. */ -+ if ( has_neg_prefix ) -+ return -1; - - /* =$SOMETHING? Defer to the regular boolean parsing. */ - if ( s[nlen] == '=' ) -- return parse_bool(&s[nlen + 1], e); -+ { -+ int b = parse_bool(&s[nlen + 1], e); -+ -+ if ( b >= 0 ) -+ return b; -+ -+ /* Not a boolean, but the name matched. Signal specially. */ -+ return -2; -+ } - - /* Unrecognised. Give up. */ - return -1; -diff --git a/xen/include/xen/lib.h b/xen/include/xen/lib.h -index c6987973bf88..2296044caf79 100644 ---- a/xen/include/xen/lib.h -+++ b/xen/include/xen/lib.h -@@ -80,7 +80,8 @@ int parse_bool(const char *s, const char *e); - /** - * Given a specific name, parses a string of the form: - * [no-]$NAME[=...] -- * returning 0 or 1 for a recognised boolean, or -1 for an error. -+ * returning 0 or 1 for a recognised boolean. Returns -1 for general errors, -+ * and -2 for "not a boolean, but $NAME= matches". - */ - int parse_boolean(const char *name, const char *s, const char *e); - --- -2.35.1 - |