Re: [PATCH v7 3/4] lib/cmdline.c Remove quotes symmetrically.

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On Thu, 24 Aug 2017 21:02:47 +1000
Michael Ellerman <mpe@xxxxxxxxxxxxxx> wrote:

> Michal Suchanek <msuchanek@xxxxxxx> writes:
> 
> > Remove quotes from argument value only if there is qoute on both
> > sides.
> >
> > Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx>
> > ---
> >  arch/powerpc/kernel/fadump.c | 6 ++----
> >  lib/cmdline.c                | 7 ++-----  
> 
> Can you split that into two patches?

Not really. There is logic in lib/cmdline.c which is duplicated in
arch/powerpc/kernel/fadump.c and so the two places should be updated in
sync. 

Thanks

Michal

> 
> cheers
> 
> >  2 files changed, 4 insertions(+), 9 deletions(-)
> >
> > diff --git a/arch/powerpc/kernel/fadump.c
> > b/arch/powerpc/kernel/fadump.c index a1614d9b8a21..d7da4ce9f7ae
> > 100644 --- a/arch/powerpc/kernel/fadump.c
> > +++ b/arch/powerpc/kernel/fadump.c
> > @@ -489,10 +489,8 @@ static void __init fadump_update_params(struct
> > param_info *param_info, *tgt++ = ' ';
> >  
> >  	/* next_arg removes one leading and one trailing '"' */
> > -	if (*tgt == '"')
> > -		shortening += 1;
> > -	if (*(tgt + vallen + shortening) == '"')
> > -		shortening += 1;
> > +	if ((*tgt == '"') && (*(tgt + vallen + shortening) == '"'))
> > +		shortening += 2;
> >  
> >  	/* remove one leading and one trailing quote if both are
> > present */ if ((val[0] == '"') && (val[vallen - 1] == '"')) {
> > diff --git a/lib/cmdline.c b/lib/cmdline.c
> > index 4c0888c4a68d..01e701b2afe8 100644
> > --- a/lib/cmdline.c
> > +++ b/lib/cmdline.c
> > @@ -227,14 +227,11 @@ char *next_arg(char *args, char **param, char
> > **val) *val = args + equals + 1;
> >  
> >  		/* Don't include quotes in value. */
> > -		if (**val == '"') {
> > +		if ((**val == '"') && (args[i-1] == '"')) {
> >  			(*val)++;
> > -			if (args[i-1] == '"')
> > -				args[i-1] = '\0';
> > +			args[i-1] = '\0';
> >  		}
> >  	}
> > -	if (quoted && args[i-1] == '"')
> > -		args[i-1] = '\0';
> >  
> >  	if (args[i]) {
> >  		args[i] = '\0';
> > -- 
> > 2.10.2  

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