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Most of this is cleaning up various driver sysfs permissions so we can

Browse source 
re-add the perm check (we unified the module param and sysfs checks, but
 the module ones were stronger so we weakened them temporarily).
 
 Param parsing gets documented, and also "--" now forces args to be
 handed to init (and ignored by the kernel).
 
 Module NX/RO protections get tightened: we now set them before calling
 parse_args().
 
 Cheers,
 Rusty.
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Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull module updates from Rusty Russell:
 "Most of this is cleaning up various driver sysfs permissions so we can
  re-add the perm check (we unified the module param and sysfs checks,
  but the module ones were stronger so we weakened them temporarily).

  Param parsing gets documented, and also "--" now forces args to be
  handed to init (and ignored by the kernel).

  Module NX/RO protections get tightened: we now set them before calling
  parse_args()"

* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  module: set nx before marking module MODULE_STATE_COMING.
  samples/kobject/: avoid world-writable sysfs files.
  drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files.
  drivers/staging/speakup/: avoid world-writable sysfs files.
  drivers/regulator/virtual: avoid world-writable sysfs files.
  drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files.
  drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files.
  drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files.
  drivers/mtd/devices/docg3.c: avoid world-writable sysfs files.
  speakup: fix incorrect perms on speakup_acntsa.c
  cpumask.h: silence warning with -Wsign-compare
  Documentation: Update kernel-parameters.tx
  param: hand arguments after -- straight to init
  modpost: Fix resource leak in read_dump()
This commit is contained in:
Linus Torvalds 2014-06-11 16:09:14 -07:00
commit 4251c2a670
15 changed files with 117 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

2
include/linux/cpumask.h
View file

@ -600,7 +600,7 @@ static inline int cpulist_scnprintf(char *buf, int len,
static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
{
char *nl = strchr(buf, '\n');
int len = nl ? nl - buf : strlen(buf);
unsigned int len = nl ? (unsigned int)(nl - buf) : strlen(buf);
return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
}

2
include/linux/moduleparam.h
View file

@ -321,7 +321,7 @@ extern bool parameq(const char *name1, const char *name2);
extern bool parameqn(const char *name1, const char *name2, size_t n);
/* Called on module insert or kernel boot */
extern int parse_args(const char *name,
extern char *parse_args(const char *name,
char *args,
const struct kernel_param *params,
unsigned num,