Re: [PATCH] checkpatch: check for incorrect permissions

Previous thread: linux-next: manual merge of the mfd tree with Linus' tree by Stephen Rothwell on Wednesday, August 11, 2010 - 9:41 pm. (2 messages)

Next thread: [PATCH V2] [X86] Fix potential issue on memmove by ling.ma on Wednesday, August 11, 2010 - 3:20 pm. (1 message)
From: Rabin Vincent
Date: Wednesday, August 11, 2010 - 10:15 pm

Throw an error when a source file has been given execute permissions
using the mode change line present in git diffs.  Also alow the filename
matching to use the "diff" line in addition to the "+++" line, since the
mode change lines appear before any "+++" lines.

Cc: Andy Whitcroft <apw@canonical.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
---
 scripts/checkpatch.pl |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2039acd..4c35cb9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1308,7 +1308,7 @@ sub process {
 		$here = "#$realline: " if ($file);
 
 		# extract the filename as it passes
-		if ($line=~/^\+\+\+\s+(\S+)/) {
+		if ($line=~/^\+\+\+\s+(\S+)/ || $line=~/^diff\s.*?(\S+)$/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@;
 
@@ -1332,6 +1332,14 @@ sub process {
 
 		$cnt_lines++ if ($realcnt != 0);
 
+# Check for incorrect file permissions
+		if ($line=~/^new (file )?mode.*[7531]\d{0,2}$/) {
+			my $permhere = $here . "FILE: $realfile\n";
+			if ($realfile=~/(Makefile|Kconfig|\.c|\.h|\.S|\.tmpl)$/) {
+				ERROR("do not set execute permissions for source files\n" . $permhere);
+			}
+		}
+
 #check the patch for a signoff:
 		if ($line =~ /^\s*signed-off-by:/i) {
 			# This is a signoff, if ugly, so do not double report.
-- 
1.7.2.dirty

--

From: Andrew Morton
Date: Thursday, August 12, 2010 - 2:02 pm

On Thu, 12 Aug 2010 10:45:45 +0530

Breakage.  This causes the false warning:

WARNING: patch prefix 'drivers' exists, appears to be a -p0 patch

to be emitted when processing the below patch:



From: Dan Carpenter <error27@gmail.com>

copy_to_user() returns the number of bytes remaining but we want to return
a negative error code on errors.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: "Michael H. Warfield" <mhw@wittsend.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/char/ip2/ip2main.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN drivers/char/ip2/ip2main.c~ip2-return-efault-on-copy_to_user-errors drivers/char/ip2/ip2main.c
--- a/drivers/char/ip2/ip2main.c~ip2-return-efault-on-copy_to_user-errors
+++ a/drivers/char/ip2/ip2main.c
@@ -2930,6 +2930,8 @@ ip2_ipl_ioctl (struct file *pFile, UINT 
 				if ( pCh )
 				{
 					rc = copy_to_user(argp, pCh, sizeof(i2ChanStr));
+					if (rc)
+						rc = -EFAULT;
 				} else {
 					rc = -ENODEV;
 				}
_

--

From: Rabin VINCENT
Date: Thursday, August 12, 2010 - 9:55 pm

I've fixed this by matching for the filename in the diff line only when
it's "diff --git".  Also prevented a double-print of the "do not modify
file in include/asm" error.

From b854ea24f1bd5391a63d8d4e2aa63e1c10870816 Mon Sep 17 00:00:00 2001
From: Rabin Vincent <rabin.vincent@stericsson.com>
Date: Wed, 11 Aug 2010 14:45:45 +0530
Subject: [PATCHv2] checkpatch: check for incorrect permissions

Throw an error when a source file has been given execute permissions
using the mode change line present in git diffs.  Also alow the filename
matching to use the "diff" line in addition to the "+++" line, since the
mode change lines appear before any "+++" lines.

Cc: Andy Whitcroft <apw@canonical.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
---
 scripts/checkpatch.pl |   14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 2039acd..a6858be 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1308,7 +1308,7 @@ sub process {
 		$here = "#$realline: " if ($file);
 
 		# extract the filename as it passes
-		if ($line=~/^\+\+\+\s+(\S+)/) {
+		if ($line =~ /^\+\+\+\s+(\S+)/ || $line =~ /^diff --git.*?(\S+)$/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@;
 
@@ -1318,6 +1318,10 @@ sub process {
 				WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
 			}
 
+			# filename based errors will anyway get printed when we
+			# get to the context lines
+			next if ($line =~ /^diff/);
+
 			if ($realfile =~ m@^include/asm/@) {
 				ERROR("do not modify files in include/asm, change architecture specific files in include/asm-<architecture>\n" . "$here$rawline\n");
 			}
@@ -1332,6 +1336,14 @@ sub process {
 
 		$cnt_lines++ if ($realcnt != 0);
 
+# Check for incorrect file permissions
+		if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
+			my $permhere = $here . "FILE: ...
From: Andy Whitcroft
Date: Wednesday, August 18, 2010 - 4:10 am

That one looks better.  I've pull this updated one (slightly modified)
into my tree.

Andrew, will send you this shortly.

-apw
--

Previous thread: linux-next: manual merge of the mfd tree with Linus' tree by Stephen Rothwell on Wednesday, August 11, 2010 - 9:41 pm. (2 messages)

Next thread: [PATCH V2] [X86] Fix potential issue on memmove by ling.ma on Wednesday, August 11, 2010 - 3:20 pm. (1 message)