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author | das <das@FreeBSD.org> | 2003-11-17 06:39:38 +0000 |
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committer | das <das@FreeBSD.org> | 2003-11-17 06:39:38 +0000 |
commit | 9c28e36b31f58fe487d9161add02ca0f5a4ece8d (patch) | |
tree | 6d98b8a183924032dff61b0974f2daf716fc09ba /sbin/nologin/nologin.c | |
parent | d29883b254f7a8b1b5b751f0d467645a6c461fe0 (diff) | |
download | FreeBSD-src-9c28e36b31f58fe487d9161add02ca0f5a4ece8d.zip FreeBSD-src-9c28e36b31f58fe487d9161add02ca0f5a4ece8d.tar.gz |
Reimplement nologin(8) as a C program. This allows us to statically
link it at low cost and avoid environment poisoning attacks associated
with LD_LIBRARY_PATH.
Suggested by: rwatson
Diffstat (limited to 'sbin/nologin/nologin.c')
-rw-r--r-- | sbin/nologin/nologin.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sbin/nologin/nologin.c b/sbin/nologin/nologin.c new file mode 100644 index 0000000..2454df4 --- /dev/null +++ b/sbin/nologin/nologin.c @@ -0,0 +1,21 @@ +/*- + * This program is in the public domain. I couldn't bring myself to + * declare Copyright on a variant of Hello World. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/uio.h> +#include <unistd.h> + +#define MESSAGE "This account is currently not available.\n" + +int +main(int argc, char *argv[]) +{ + + write(STDOUT_FILENO, MESSAGE, sizeof(MESSAGE)); + _exit(1); +} |