Category : Linux Files
Archive   : LN9911A1.ZIP
Filename : PATCH.TXT

 
Output of file : PATCH.TXT contained in archive : LN9911A1.ZIP

Wend Aug. 17 1993

I hate to put out patches this soon after a release, but there is one
potentially major problem in pl12 which is very simple to fix.. I'm
including patches: both in plain ascii and as a uuencoded gzip file
(it's the same patch - the uuencoded one is in case there is any
newsserver that messes up whitespace).

The main patch is just the change from __get_free_page(GFP_BUFFER) into
get_free_page(GFP_KERNEL), and the two minor patches just add checks
that actually enforce the read-only nature of current file mmap'ings so
that any program that tries to do a write mapping at least will be told
that it won't work.

I'd suggest anybody compiling pl12 should add at least the file_table.c
patch: thanks to Alexandre Julliard for noticing this one.

Linus

----------
diff -u --recursive --new-files pl12/linux/fs/file_table.c linux/fs/file_table.c
--- pl12/linux/fs/file_table.c Mon Aug 9 17:41:22 1993
+++ linux/fs/file_table.c Tue Aug 17 18:32:13 1993
@@ -45,7 +45,7 @@
struct file * file;
int i;

- file = (struct file*) __get_free_page(GFP_BUFFER);
+ file = (struct file *) get_free_page(GFP_KERNEL);

if (!file)
return;
diff -u --recursive --new-files pl12/linux/fs/nfs/mmap.c linux/fs/nfs/mmap.c
--- pl12/linux/fs/nfs/mmap.c Sun Aug 15 11:46:03 1993
+++ linux/fs/nfs/mmap.c Tue Aug 17 22:39:38 1993
@@ -50,6 +50,8 @@
{
struct vm_area_struct * mpnt;

+ if (prot & PAGE_RW) /* only PAGE_COW or read-only supported now */
+ return -EINVAL;
if (off & (inode->i_sb->s_blocksize - 1))
return -EINVAL;
if (len > high_memory || off > high_memory - len) /* avoid overflow */
diff -u --recursive --new-files pl12/linux/mm/mmap.c linux/mm/mmap.c
--- pl12/linux/mm/mmap.c Mon Aug 9 18:02:33 1993
+++ linux/mm/mmap.c Tue Aug 17 22:39:38 1993
@@ -197,6 +197,8 @@
extern struct vm_operations_struct file_mmap;
struct buffer_head * bh;

+ if (prot & PAGE_RW) /* only PAGE_COW or read-only supported right now */
+ return -EINVAL;
if (off & (inode->i_sb->s_blocksize - 1))
return -EINVAL;
if (len > high_memory || off > high_memory - len) /* avoid overflow */
----------
begin 644 diff.gz
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=+.(8%=N8M$S,R\V_AZP,:OT?1/T7_';.!R@% "4

end


--
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  3 Responses to “Category : Linux Files
Archive   : LN9911A1.ZIP
Filename : PATCH.TXT

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/