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Add a "-q" quiet flag to kenv so that warnings can be suppressed.

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MFC after:	1 week
This commit is contained in:
Robert Watson 2005-09-13 19:01:53 +00:00
parent e88c48fefc
commit af2b8e58cc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=150101
2 changed files with 20 additions and 9 deletions
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9
bin/kenv/kenv.1
View File

@ -32,10 +32,12 @@
.Nd dump or modify the kernel environment
.Sh SYNOPSIS
.Nm
.Op Fl h
.Op Fl hq
.Nm
.Op Fl q
.Ar variable Ns Op = Ns Ar value
.Nm
.Op Fl q
.Fl u
.Ar variable
.Sh DESCRIPTION
@ -60,6 +62,11 @@ If the environment variable is followed by an optional
.Ar value ,
.Nm
will set the environment variable to this value.
.Pp
If the
.Fl q
option is set, warnings normally printed as a result of being unable to
perform the requested operation will be suppressed.
.Sh SEE ALSO
.Xr kenv 2 ,
.Xr loader 8

20
bin/kenv/kenv.c
View File

@ -42,15 +42,16 @@ static int ksetenv(char *, char *);
static int kunsetenv(char *);
static int hflag = 0;
static int qflag = 0;
static int uflag = 0;
static void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n%s\n",
"usage: kenv [-h]",
" kenv variable[=value]",
" kenv -u variable");
"usage: kenv [-hq]",
" kenv [-q] variable[=value]",
" kenv [-q] -u variable");
exit(1);
}
@ -63,11 +64,14 @@ main(int argc, char **argv)
error = 0;
val = NULL;
env = NULL;
while ((ch = getopt(argc, argv, "hu")) != -1) {
while ((ch = getopt(argc, argv, "hqu")) != -1) {
switch (ch) {
case 'h':
hflag++;
break;
case 'q':
qflag++;
break;
case 'u':
uflag++;
break;
@ -93,21 +97,21 @@ main(int argc, char **argv)
usage();
if (env == NULL) {
error = kdumpenv();
if (error)
if (error && !qflag)
warn("kdumpenv");
} else if (val == NULL) {
if (uflag) {
error = kunsetenv(env);
if (error)
if (error && !qflag)
warnx("unable to unset %s", env);
} else {
error = kgetenv(env);
if (error)
if (error && !qflag)
warnx("unable to get %s", env);
}
} else {
error = ksetenv(env, val);
if (error)
if (error && !qflag)
warnx("unable to set %s to %s", env, val);
}
return (error);