public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Luis Chamberlain <mcgrof@kernel.org>
To: linux-modules@vger.kernel.org, linux-kernel@vger.kernel.org,
	pmladek@suse.com, david@redhat.com, petr.pavlu@suse.com,
	prarit@redhat.com
Cc: christophe.leroy@csgroup.eu, song@kernel.org, mcgrof@kernel.org,
	torvalds@linux-foundation.org
Subject: [RFC 02/12] module: move get_modinfo() helpers all above
Date: Fri, 10 Mar 2023 21:17:02 -0800	[thread overview]
Message-ID: <20230311051712.4095040-3-mcgrof@kernel.org> (raw)
In-Reply-To: <20230311051712.4095040-1-mcgrof@kernel.org>

Instead of forward declaring routines for get_modinfo() just move
everything up. This makes no functional changes.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 kernel/module/main.c | 100 +++++++++++++++++++++----------------------
 1 file changed, 48 insertions(+), 52 deletions(-)

diff --git a/kernel/module/main.c b/kernel/module/main.c
index 5f1473eb34e0..6d6e6a6184b5 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -1016,9 +1016,55 @@ int try_to_force_load(struct module *mod, const char *reason)
 #endif
 }
 
-static char *get_modinfo(const struct load_info *info, const char *tag);
+/* Parse tag=value strings from .modinfo section */
+static char *next_string(char *string, unsigned long *secsize)
+{
+	/* Skip non-zero chars */
+	while (string[0]) {
+		string++;
+		if ((*secsize)-- <= 1)
+			return NULL;
+	}
+
+	/* Skip any zero padding. */
+	while (!string[0]) {
+		string++;
+		if ((*secsize)-- <= 1)
+			return NULL;
+	}
+	return string;
+}
+
 static char *get_next_modinfo(const struct load_info *info, const char *tag,
-			      char *prev);
+			      char *prev)
+{
+	char *p;
+	unsigned int taglen = strlen(tag);
+	Elf_Shdr *infosec = &info->sechdrs[info->index.info];
+	unsigned long size = infosec->sh_size;
+
+	/*
+	 * get_modinfo() calls made before rewrite_section_headers()
+	 * must use sh_offset, as sh_addr isn't set!
+	 */
+	char *modinfo = (char *)info->hdr + infosec->sh_offset;
+
+	if (prev) {
+		size -= prev - modinfo;
+		modinfo = next_string(prev, &size);
+	}
+
+	for (p = modinfo; p; p = next_string(p, &size)) {
+		if (strncmp(p, tag, taglen) == 0 && p[taglen] == '=')
+			return p + taglen + 1;
+	}
+	return NULL;
+}
+
+static char *get_modinfo(const struct load_info *info, const char *tag)
+{
+	return get_next_modinfo(info, tag, NULL);
+}
 
 static int verify_namespace_is_imported(const struct load_info *info,
 					const struct kernel_symbol *sym,
@@ -1544,56 +1590,6 @@ static void set_license(struct module *mod, const char *license)
 	}
 }
 
-/* Parse tag=value strings from .modinfo section */
-static char *next_string(char *string, unsigned long *secsize)
-{
-	/* Skip non-zero chars */
-	while (string[0]) {
-		string++;
-		if ((*secsize)-- <= 1)
-			return NULL;
-	}
-
-	/* Skip any zero padding. */
-	while (!string[0]) {
-		string++;
-		if ((*secsize)-- <= 1)
-			return NULL;
-	}
-	return string;
-}
-
-static char *get_next_modinfo(const struct load_info *info, const char *tag,
-			      char *prev)
-{
-	char *p;
-	unsigned int taglen = strlen(tag);
-	Elf_Shdr *infosec = &info->sechdrs[info->index.info];
-	unsigned long size = infosec->sh_size;
-
-	/*
-	 * get_modinfo() calls made before rewrite_section_headers()
-	 * must use sh_offset, as sh_addr isn't set!
-	 */
-	char *modinfo = (char *)info->hdr + infosec->sh_offset;
-
-	if (prev) {
-		size -= prev - modinfo;
-		modinfo = next_string(prev, &size);
-	}
-
-	for (p = modinfo; p; p = next_string(p, &size)) {
-		if (strncmp(p, tag, taglen) == 0 && p[taglen] == '=')
-			return p + taglen + 1;
-	}
-	return NULL;
-}
-
-static char *get_modinfo(const struct load_info *info, const char *tag)
-{
-	return get_next_modinfo(info, tag, NULL);
-}
-
 static void setup_modinfo(struct module *mod, struct load_info *info)
 {
 	struct module_attribute *attr;
-- 
2.39.1


  parent reply	other threads:[~2023-03-11  5:17 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-11  5:17 [RFC 00/12] module: avoid userspace pressure on unwanted allocations Luis Chamberlain
2023-03-11  5:17 ` [RFC 01/12] module: use goto errors on check_modinfo() and layout_and_allocate() Luis Chamberlain
2023-03-11  5:17 ` Luis Chamberlain [this message]
2023-03-11  5:17 ` [RFC 03/12] module: rename next_string() to module_next_tag_pair() Luis Chamberlain
2023-03-11  5:17 ` [RFC 04/12] module: add a for_each_modinfo_entry() Luis Chamberlain
2023-03-11  5:17 ` [RFC 05/12] module: add debugging alias parsing support Luis Chamberlain
2023-03-11  5:17 ` [RFC 06/12] module: move early sanity checks into a helper Luis Chamberlain
2023-03-11  5:17 ` [RFC 07/12] module: move check_modinfo() early to early_mod_check() Luis Chamberlain
2023-03-11  5:17 ` [RFC 08/12] module: move finished_loading() Luis Chamberlain
2023-03-11  5:17 ` [RFC 09/12] module: extract patient module check into helper Luis Chamberlain
2023-03-11  5:17 ` [RFC 10/12] module: avoid allocation if module is already present and ready Luis Chamberlain
2023-03-11  5:17 ` [RFC 11/12] module: use list_add_tail_rcu() when adding module Luis Chamberlain
2023-03-11  5:17 ` [RFC 12/12] module: use aliases to find module on find_module_all() Luis Chamberlain
2023-03-15 14:43   ` Petr Pavlu
2023-03-15 16:12     ` Luis Chamberlain
2023-03-15 12:24 ` [RFC 00/12] module: avoid userspace pressure on unwanted allocations David Hildenbrand
2023-03-15 16:10   ` Luis Chamberlain
2023-03-15 16:41     ` David Hildenbrand
2023-03-16 23:55       ` Luis Chamberlain
2023-03-16 23:56         ` Luis Chamberlain
2023-03-18  0:11           ` Luis Chamberlain
2023-03-20  9:38             ` David Hildenbrand
2023-03-20 19:40               ` David Hildenbrand
2023-03-20 21:09                 ` Luis Chamberlain
2023-03-20 21:15                   ` David Hildenbrand
2023-03-20 21:23                     ` Luis Chamberlain
2023-03-20 21:27                       ` Luis Chamberlain
2023-03-21 19:32                         ` David Hildenbrand
2023-03-24  9:27                           ` David Hildenbrand
2023-03-24 17:54                             ` Luis Chamberlain
2023-03-24 19:11                               ` Linus Torvalds
2023-03-24 19:59                                 ` Luis Chamberlain
2023-03-24 20:28                                   ` Linus Torvalds
2023-03-24 21:14                                     ` Luis Chamberlain
2023-03-24 23:27                                       ` Luis Chamberlain
2023-03-24 23:41                                         ` Linus Torvalds
2023-03-28  3:44                               ` David Hildenbrand
2023-03-28  6:16                                 ` Luis Chamberlain
2023-03-28 21:02                                   ` David Hildenbrand
2023-03-29  5:31                                     ` Luis Chamberlain
2023-03-30  4:42                                       ` David Hildenbrand
2023-03-21 15:11                       ` David Hildenbrand
2023-03-21 16:52                         ` Luis Chamberlain
2023-03-21 17:01                           ` David Hildenbrand
2023-03-20  9:37           ` David Hildenbrand

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230311051712.4095040-3-mcgrof@kernel.org \
    --to=mcgrof@kernel.org \
    --cc=christophe.leroy@csgroup.eu \
    --cc=david@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-modules@vger.kernel.org \
    --cc=petr.pavlu@suse.com \
    --cc=pmladek@suse.com \
    --cc=prarit@redhat.com \
    --cc=song@kernel.org \
    --cc=torvalds@linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox