linux-kernel - Re: [PATCH 1/2] perf tools: add cat as fallback pager

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Message-ID: <5376C17E.60403@gmail.com>
Date:	Fri, 16 May 2014 19:55:10 -0600
From:	David Ahern <dsahern@...il.com>
To:	Stephane Eranian <eranian@...gle.com>, linux-kernel@...r.kernel.org
CC:	peterz@...radead.org, mingo@...e.hu, acme@...hat.com,
	jolsa@...hat.com, namhyung.kim@...nel.org,
	Michael Lentine <mlentine@...gle.com>
Subject: Re: [PATCH 1/2] perf tools: add cat as fallback pager

On 5/16/14, 5:14 PM, Stephane Eranian wrote:
> From: Michael Lentine <mlentine@...gle.com>
>
> This patch adds a fallback to cat for the pager. This is useful
> on environmnents, such as Android, where less does not exist.
> It is better to default to cat than to abort.
>
> Reviewed-by: Stephane Eranian <eranian@...gle.com>
> Signed-off-by: Michael Lentine <mlentine@...gle.com>
> ---
>   tools/perf/util/pager.c | 12 ++++++------
>   1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/tools/perf/util/pager.c b/tools/perf/util/pager.c
> index 3322b84..5feec3d 100644
> --- a/tools/perf/util/pager.c
> +++ b/tools/perf/util/pager.c
> @@ -57,13 +57,13 @@ void setup_pager(void)
>   	}
>   	if (!pager)
>   		pager = getenv("PAGER");
> -	if (!pager) {
> -		if (!access("/usr/bin/pager", X_OK))
> -			pager = "/usr/bin/pager";
> -	}
> -	if (!pager)
> +	if (!(pager || access("/usr/bin/pager", X_OK)))
> +		pager = "/usr/bin/pager";
> +	if (!(pager || access("/usr/bin/less", X_OK)))
>   		pager = "less";

If you check for /usr/bin/less shouldn't the full path be used here?

David
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