All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ian Jackson <Ian.Jackson@eu.citrix.com>
To: Roger Pau Monne <roger.pau@citrix.com>
Cc: xen-devel@lists.xen.org
Subject: Re: [PATCH v3 1/5] libxl: allow libxl__exec to take a	parameter containing the env variables
Date: Mon, 23 Apr 2012 16:37:50 +0100	[thread overview]
Message-ID: <20373.30542.669565.492586@mariner.uk.xensource.com> (raw)
In-Reply-To: <1334928211-29856-2-git-send-email-roger.pau@citrix.com>

Roger Pau Monne writes ("[Xen-devel] [PATCH v3 1/5] libxl: allow libxl__exec to take a parameter containing the env variables"):
> Add another parameter to libxl__exec call that contains the
> environment variables to use when performing the execvp call.

This looks OK to me.  However, shouldn't this be const char** ?

>      struct termios termattr;
> +    char *env[] = {"TERM", "vt100", NULL};

We don't compile with -Wwrite-strings but if we did this would
trigger.  Also it needs spaces inside { } I think.

> +    if (env != NULL) {
> +        for (int i = 0; env[i] != NULL && env[i+1] != NULL; i += 2) {
> +            setenv(env[i], env[i+1], 1);

setenv can fail.  If it does you should probably check errno and
probably call libxl__alloc_failed.

> +/*
> + * env should be passed using the following format,
> + *
> + * env[0]: name of env variable
> + * env[1]: value of env variable

You need to mention that it may have more than one setting!

Ian.

  reply	other threads:[~2012-04-23 15:37 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-20 13:23 [PATCH v3 0/5] libxl: call hotplug scripts from libxl Roger Pau Monne
2012-04-20 13:23 ` [PATCH v3 1/5] libxl: allow libxl__exec to take a parameter containing the env variables Roger Pau Monne
2012-04-23 15:37   ` Ian Jackson [this message]
2012-04-20 13:23 ` [PATCH v3 2/5] libxl: add libxl__xs_path_cleanup Roger Pau Monne
2012-04-23 15:33   ` Ian Jackson
2012-04-23 15:42     ` Roger Pau Monne
2012-04-23 16:49       ` Ian Jackson
2012-04-23 16:52   ` Ian Jackson
2012-04-25 13:19     ` Roger Pau Monne
2012-05-02  9:44     ` Roger Pau Monne
2012-04-20 13:23 ` [PATCH v3 3/5] libxl: call hotplug scripts from libxl for vbd Roger Pau Monne
2012-04-23 16:48   ` Ian Jackson
2012-04-24  9:16     ` Ian Campbell
2012-04-24 10:09       ` Ian Jackson
2012-04-24 10:17         ` Ian Campbell
2012-04-24 10:27           ` Ian Jackson
2012-04-24 10:29             ` Ian Campbell
2012-04-24 10:37               ` Ian Jackson
2012-04-25 13:53                 ` Roger Pau Monne
2012-04-25 14:59                   ` Ian Campbell
     [not found]     ` <4F982F18.2080902@citrix.com>
2012-04-26 11:48       ` Fwd: " Roger Pau Monne
2012-04-26 12:06         ` Ian Campbell
2012-04-26 12:12           ` Roger Pau Monne
2012-04-26 13:02         ` Ian Jackson
2012-04-26 13:09           ` Ian Campbell
2012-05-11 16:06             ` Ian Jackson
2012-05-11 16:26               ` Ian Campbell
2012-04-20 13:23 ` [PATCH v3 4/5] libxl: call hotplug scripts from libxl for vif Roger Pau Monne
2012-04-23 16:59   ` Ian Jackson
2012-04-24  9:18     ` Ian Campbell
2012-04-25 11:19   ` Ian Campbell
2012-04-25 11:24     ` Roger Pau Monne
2012-04-20 13:23 ` [PATCH v3 5/5] libxl: add "downscript=no" to Qemu call Roger Pau Monne
2012-04-23 15:38   ` Ian Jackson
2012-04-23 12:12 ` [PATCH v3 0/5] libxl: call hotplug scripts from libxl Marek Marczykowski
2012-04-23 13:31   ` Roger Pau Monne
2012-04-23 13:47     ` Marek Marczykowski
2012-04-23 13:59       ` Non-dom0 block backends (was: Re: [PATCH v3 0/5] libxl: call hotplug scripts from libxl) Joanna Rutkowska
2012-04-23 14:02     ` [PATCH v3 0/5] libxl: call hotplug scripts from libxl Ian Campbell
2012-04-23 16:25       ` Roger Pau Monne
2012-04-24  9:18         ` Ian Campbell

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20373.30542.669565.492586@mariner.uk.xensource.com \
    --to=ian.jackson@eu.citrix.com \
    --cc=roger.pau@citrix.com \
    --cc=xen-devel@lists.xen.org \
    --subject='Re: [PATCH v3 1/5] libxl: allow libxl__exec to take a	parameter containing the env variables' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.