Date: Tue, 10 Nov 2009 16:50:07 +0100 (CET) From: Alexander Best <alexbestms@wwu.de> To: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: freebsd-hackers@FreeBSD.org, Giorgos Keramidas <keramida@freebsd.org> Subject: Re: [patch] burncd: honour for envar SPEED Message-ID: <permail-200911101550071e86ffa800005ac8-a_best01@message-id.uni-muenster.de> In-Reply-To: <863a4mg676.fsf@ds4.des.no>
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[-- Attachment #1 --]
Dag-Erling Smørgrav schrieb am 2009-11-10:
> Alexander Best <alexbestms@wwu.de> writes:
> > good point. is this one better?
> Yes (modulo indentation - run your code through tabify)
> DES
oops. found another problem. if BURNCD_SPEED and -s aren't defined strcasecmp
segfaults because env_speed is NULL.
does this patch take care of the problem?
alex
ps: would be nice if strcasecmp could protect itself from segfault with one or
both of the args being NULL.
[-- Attachment #2 --]
Index: usr.sbin/burncd/burncd.8
===================================================================
--- usr.sbin/burncd/burncd.8 (revision 199125)
+++ usr.sbin/burncd/burncd.8 (working copy)
@@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd May 2, 2005
+.Dd Nov 9, 2009
.Os
.Dt BURNCD 8
.Sh NAME
@@ -158,7 +158,11 @@
.Sh ENVIRONMENT
The following environment variables affect the execution of
.Nm :
-.Bl -tag -width ".Ev CDROM"
+.Bl -tag -width ".Ev BURNCD_SPEED"
+.It Ev BURNCD_SPEED
+The write speed to use if one is not specified with the
+.Fl s
+flag.
.It Ev CDROM
The CD device to use if one is not specified with the
.Fl f
Index: usr.sbin/burncd/burncd.c
===================================================================
--- usr.sbin/burncd/burncd.c (revision 199125)
+++ usr.sbin/burncd/burncd.c (working copy)
@@ -80,11 +80,13 @@
int dao = 0, eject = 0, fixate = 0, list = 0, multi = 0, preemp = 0;
int nogap = 0, speed = 4 * 177, test_write = 0, force = 0;
int block_size = 0, block_type = 0, cdopen = 0, dvdrw = 0;
- const char *dev;
+ const char *dev, *env_speed;
if ((dev = getenv("CDROM")) == NULL)
dev = "/dev/acd0";
+ env_speed = getenv("BURNCD_SPEED");
+
while ((ch = getopt(argc, argv, "def:Flmnpqs:tv")) != -1) {
switch (ch) {
case 'd':
@@ -124,12 +126,7 @@
break;
case 's':
- if (strcasecmp("max", optarg) == 0)
- speed = CDR_MAX_SPEED;
- else
- speed = atoi(optarg) * 177;
- if (speed <= 0)
- errx(EX_USAGE, "Invalid speed: %s", optarg);
+ env_speed = optarg;
break;
case 't':
@@ -147,6 +144,15 @@
argc -= optind;
argv += optind;
+ if (env_speed == NULL)
+ ;
+ else if (strcasecmp("max", env_speed) == 0)
+ speed = CDR_MAX_SPEED;
+ else
+ speed = atoi(env_speed) * 177;
+ if (speed <= 0)
+ errx(EX_USAGE, "Invalid speed: %s", optarg);
+
if (argc == 0)
usage();
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