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| author | Sami Kerola | 2012-06-16 22:59:47 +0200 |
|---|---|---|
| committer | Sami Kerola | 2012-06-17 17:59:59 +0200 |
| commit | edf1cf0af541cd4ffe5d91d776627e0d70ded184 (patch) | |
| tree | 2bb83f7b4ee7b0ca6044dcba5b2d65b5c34658b5 /sys-utils/setarch.c | |
| parent | hexdump: print sensible message when all input file arguments fail (diff) | |
| download | kernel-qcow2-util-linux-edf1cf0af541cd4ffe5d91d776627e0d70ded184.tar.gz kernel-qcow2-util-linux-edf1cf0af541cd4ffe5d91d776627e0d70ded184.tar.xz kernel-qcow2-util-linux-edf1cf0af541cd4ffe5d91d776627e0d70ded184.zip | |
setarch: disallow unknown command line options
Exit with instruction to run --help if unknown option is encountered.
Before the following example printed error, but resulted to an attempt
to run argument.
$ x86_64 -x ls
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Diffstat (limited to 'sys-utils/setarch.c')
| -rw-r--r-- | sys-utils/setarch.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c index a0c6ea81f..f2315a660 100644 --- a/sys-utils/setarch.c +++ b/sys-utils/setarch.c @@ -122,7 +122,10 @@ show_help(void) static void __attribute__((__noreturn__)) show_usage(const char *s) { - errx(EXIT_FAILURE, _("%s\nTry `%s --help' for more information."), s, program_invocation_short_name); + if (s) + errx(EXIT_FAILURE, _("%s\nTry `%s --help' for more information."), s, program_invocation_short_name); + else + errx(EXIT_FAILURE, _("Try `%s --help' for more information."), program_invocation_short_name); } static void __attribute__((__noreturn__)) @@ -325,6 +328,8 @@ int main(int argc, char *argv[]) case OPT_UNAME26: turn_on(UNAME26, options); break; + default: + show_usage(NULL); } } |