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Diffstat (limited to 'toys/example/hello.c')
-rw-r--r-- | toys/example/hello.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/toys/example/hello.c b/toys/example/hello.c new file mode 100644 index 00000000..3b7d27b6 --- /dev/null +++ b/toys/example/hello.c @@ -0,0 +1,35 @@ +/* hello.c - A hello world program. (Simple template for new commands.) + * + * Copyright 2012 Rob Landley <rob@landley.net> + * + * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ + * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html + +USE_HELLO(NEWTOY(hello, 0, TOYFLAG_USR|TOYFLAG_BIN)) + +config HELLO + bool "hello" + default n + help + usage: hello [-s] + + A hello world program. You don't need this. + + Mostly used as a simple template for adding new commands. + Occasionally nice to smoketest kernel booting via "init=/usr/bin/hello". +*/ + +#define FOR_hello +#include "toys.h" + +GLOBALS( + int unused; +) + +void hello_main(void) +{ + xprintf("Hello world\n"); + + // Avoid kernel panic if run as init. + if (getpid() == 1) wait(&TT.unused); +} |