linux-toradex.git/lib/vsprintf.c, branch tegra-10.9.4

sscanf(): fix %*s%n

2009-10-01T23:11:16+00:00

When using %*s, sscanf should honor conversion specifiers immediately
following the %*s.  For example, the following code should find the
position of the end of the string "hello".

  int end;
  char buf[] = "hello    world";
  sscanf(buf, "%*s%n", &end);
  printf("%d\n", end);

Ideally, sscanf would advance the fmt and str pointers the same as it
would without the *, but the code for that is rather complicated and is
not included in the patch.

Signed-off-by: Andy Spencer 
Acked-by: WANG Cong 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

2009-09-24T22:13:11+00:00

Conflicts:
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/cpc-usb/TODO
	drivers/staging/cpc-usb/cpc-usb_drv.c
	drivers/staging/cpc-usb/cpc.h
	drivers/staging/cpc-usb/cpc_int.h
	drivers/staging/cpc-usb/cpcusb.h

lib/vsprintf.c: Avoid possible unaligned accesses in %pI6c

2009-09-22T21:00:05+00:00

Jens Rosenboom noticed that a possibly unaligned const char*
is cast to a const struct in6_addr *.

Avoid this at the cost of a struct in6_addr copy on the stack.

Signed-off-by: Joe Perches 
Signed-off-by: David S. Miller

vsprintf: use WARN_ON_ONCE

2009-09-22T14:17:47+00:00

Signed-off-by: Marcin Slusarz 
Reviewed-by: Frederic Weisbecker 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vsnprintf: remove duplicate comment of vsnprintf

2009-09-17T19:53:46+00:00

Remove the duplicate comment of bstr_printf that is the same as the
vsnprintf.

Add the 's' option to the comment for the pointer function. This is
more of an internal function so the little duplication of the comment
here is OK.

Reported-by: Zhaolei 
Cc: Linus Torvalds 
Signed-off-by: Steven Rostedt

vsprintf: add %ps that is the same as %pS but is like %pf

2009-09-17T19:53:14+00:00

On PowerPC64 function pointers do not point directly at the functions,
but instead point to pointers to the functions. The output of %pF expects
to point to a pointer to the function, whereas %pS will show the function
itself.

mcount returns the direct pointer to the function and not the pointer to
the pointer. Thus %pS must be used to show this. The function tracer
requires printing of the functions without offsets and uses the %pf
instead.

 %pF produces run_local_timers+0x4/0x1f
 %pf produces just run_local_timers

For PowerPC64, we need to use the direct pointer, and we only have
%pS which will produce .run_local_timers+0x4/0x1f

This patch creates a %ps that matches the %pf as %pS matches %pF.

Cc: Linus Torvalds 
Cc: Zhao Lei 
Acked-by: Benjamin Herrenschmidt 
Signed-off-by: Steven Rostedt

lib/vsprintf.c: Add "%pI6c" - print pointer as compressed ipv6 address

2009-08-29T07:19:26+00:00

Signed-off-by: Joe Perches 
Tested-by: Jens Rosenboom 
Signed-off-by: David S. Miller

vsprintf: introduce %pf format specifier

2009-04-29T18:55:55+00:00

A printf format specifier which would allow us to print a pure
function name has been suggested by Andrew Morton a couple of
months ago.

The current %pF is very convenient to print a function symbol,
but often we only want to print the name of the function, without
its asm offset.

That's what  %pf does in this patch.  The lowecase f has been chosen
for its intuitive meaning of a 'weak kind of %pF'.

The support for this new format would be welcome by the tracing code
where the need to print pure function names is often needed. This is
also true for other parts of the kernel:

$ git-grep -E "kallsyms_lookup\(.+?\)"
arch/blackfin/kernel/traps.c:   symname = kallsyms_lookup(address, &symsize, &offset, &modname, namebuf);
arch/powerpc/xmon/xmon.c:               name = kallsyms_lookup(pc, &size, &offset, NULL, tmpstr);
arch/sh/kernel/cpu/sh5/unwind.c:        sym = kallsyms_lookup(pc, NULL, &offset, NULL, namebuf);
arch/x86/kernel/ftrace.c:       kallsyms_lookup((unsigned long) syscall, NULL, NULL, NULL, str);
kernel/kprobes.c:               sym = kallsyms_lookup((unsigned long)p->addr, NULL,
kernel/lockdep.c:       return kallsyms_lookup((unsigned long)key, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup((unsigned long)rec->ops->func, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
kernel/trace/ftrace.c:  kallsyms_lookup(rec->ip, NULL, NULL, &modname, str);
kernel/trace/ftrace.c:  kallsyms_lookup(*ptr, NULL, NULL, NULL, str);
kernel/trace/trace_functions.c: kallsyms_lookup(ip, NULL, NULL, NULL, str);
kernel/trace/trace_output.c:    kallsyms_lookup(address, NULL, NULL, NULL, str);

Changes in v2:

- Add the explanation of the %pf role for vsnprintf() and bstr_printf()

- Change the comments by dropping the "asm offset" notion and only
  define the %pf against the actual function offset notion.

Signed-off-by: Frederic Weisbecker 
Acked-by: Mike Frysinger 
Cc: Linus Torvalds 
Cc: Zhaolei 
Cc: Tom Zanussi 
Cc: Li Zefan 
Cc: Andrew Morton 
Cc: Steven Rostedt 
LKML-Reference: <20090415154817.GC5989@nowhere>
Signed-off-by: Ingo Molnar

printk: add support of hh length modifier for printk

2009-04-08T15:04:30+00:00

Impact: new feature, extend vsprintf format strings

hh is used as length modifier for signed char or unsigned char.
It is supported by glibc, we add kernel support now.

Signed-off-by: Zhao Lei 
Acked-by: Lai Jiangshan 
Acked-by: Frederic Weisbecker 
Cc: torvalds@linux-foundation.org
Cc: Steven Rostedt 
LKML-Reference: <49CC9739.30107@cn.fujitsu.com>
Signed-off-by: Ingo Molnar

printk: fix wrong format string iter for printk

2009-04-08T15:03:44+00:00

printk("%Q");

 Output before patch:  %QQ
 Output  after patch:  %Q

Signed-off-by: Zhao Lei 
Acked-by: Lai Jiangshan 
Acked-by: Frederic Weisbecker 
Cc: torvalds@linux-foundation.org
Cc: Steven Rostedt 
LKML-Reference: <49CC97B6.7040809@cn.fujitsu.com>
Signed-off-by: Ingo Molnar